Practices of entomophagy and entomotherapy by members of the Nyishi and Galo tribes, two ethnic groups of the state of Arunachal Pradesh (North-East India)
verfasst von:
Jharna Chakravorty, Sampat Ghosh, Victor Benno Meyer-Rochow
We prepared a consolidated list of edible and therapeutic insects used in Arunachal Pradesh (N.E. India) by two tribal societies (i.e., the Nyishi of East Kameng and the Galo of West Siang). The list is based on thorough, semi-structured field-interviews with 20 informants of each tribal group. At least 81 species of local insects, belonging to 26 families and five orders of insects, namely Coleoptera (24 species), Orthoptera (17 species), Hemiptera (16 species), Hymenoptera (15 species) and Odonata (9 species), are being used as food among members of these two indigenous societies. However, Nyishi use overall more species of insects as food than Galo people do and consume mostly Coleoptera and Hemiptera; amongst the Galo, on the other hand, Odonata and Orthoptera dominate. The selection of the food insects amongst the Nyishi and Galo is dictated by traditional tribal beliefs as well as the taste and availability of the insects. Depending on the species, only particular or all developmental stages are consumed. Some food insects may be included in the local diet throughout the year, others only when seasonally available. Commonly specimens are being prepared for consumption by roasting, frying or boiling. Twelve species of insects are deemed therapeutically valuable by the locals and are being used by the tribes investigated to treat a variety of disorders in humans and domestic animals. Members of the Galo use a greater number of insect species for remedial purposes than the Nyishi. With the degradation of natural resources, rapid population growth, and increasing influence of 'westernization', the traditional wisdom of entomophagy and entomotherapy is at risk of being lost. There is thus an urgent need to record the role insects play as components of local diets and folk remedies and to assess insect biodiversity in the light of these uses.
The online version of this article (doi:10.1186/1746-4269-7-5) contains supplementary material, which is available to authorized users.
Competing interests
The authors declare that they have no competing interests.
Authors' contributions
JC carried out the field work and supervised SG's research. SG participated in the field work and identification of the insects. VBM-R began the ethno-entomological studies in North-East India and participated in the design, coordination, and drafted the final manuscript. All authors read and approved the final manuscript.
Introduction
The term entomophagy refers to the use of insects as food. Insects represent a traditional food category in many cultures of the world. Insects, as the most species-rich taxon of all animals, exhibit an enormous biodiversity and represent a colossal biomass in Nature. According to Bodenheimer [1] they have played an important part in the history of human nutrition in Africa, Asia and Latin America. Detailed information regarding diversity, mode of consumption and economic value of edible insects in all tropical and subtropical regions of the world has been compiled by De Foliart [2], Nonaka [3] and Mitsuhashi [4]. Van Huis [5] has reported that there are approximately 250 highly nutritious, edible insect species in sub-Saharan Africa, Ramos-Elorduy [6] has registered around 535 edible species in Mexico, and Mitsuhashi [4] arrived at a figure of at least 1,900 species of edible insects worldwide.
Preference given to insect species utilized as food by humans, depends on the insect's palatability, availability, and nutritional value as well as on local traditions and customs. Besides being described by many insect enthusiasts as a tasty food commodity of high nutritive value, many insects are also considered to possess health-enhancing properties. In many parts of the world, different sections of the society have been using medico-entomological drugs to this day in their lives. A number of studies has in recent years drawn attention to the therapeutic value of certain species of insects, their products, and their developmental stages [7‐15]. According to Pemberton [16] arthropods as parts of folk medicinal remedies continue to be important in China and Korea. In India the bee product honey is being used in several Ayurvedic formulations since time immemorial and Yamakawa [17] has shown that insects, generally, can be regarded as a source for the development of drugs with immunological, analgesic, antibacterial, diuretic, anaesthetic, and anti-rheumatic properties.
Anzeige
Traditional ethnobiological knowledge and the habit of accepting insects as food and as an integral part of local therapies is nowadays confined to the traditionally living, largely indigenous societies of regions that until now have experienced only a limited amount of 'westernization'. The therapeutic uses of insects are often a closely guarded secret and only passed on to certain individuals from one generation to another by word of mouth. Transfer of knowledge in this way is an age-old practice and a well accepted socio-cultural attribute among the ethnic societies of North-East India.
Most of the edible insects, some of which are crop pests, but at the same time possess high nutritional qualities, constitute an important part of the local daily diet and, stressed by Reim [18] and Meyer-Rochow [19], are not an emergency food accepted only during times of starvation. Some insect species, moreover, find use in various home remedies. Information on this aspect of local life anywhere in the world is very fragmentary and for North-East India has only quite recently become an issue of scientific inquiry [20‐23]. The aim of the present study, therefore, is to expand the earlier research on edible and therapeutic species of insects to include some tribes of Arunachal Pradesh, not investigated earlier) in our survey of insect uses by humans in North East India.
Arunachal Pradesh, the largest state in North-East India, lies between 26° 28' and 29° 30' N latitude and 90° 30' and 97°30' E longitude and biogeographically is situated in the Eastern Himalayan province, a territory characterized by a complex system of mountains and valleys of variable elevation (50 to 7000 m). By virtue of its geographical position, climatic zones and altitudinal variations, the state's biodiversity is rich with large tracts of tropical, wet evergreen forests and subtropical, temperate and alpine vegetation. It is regarded a global biodiversity hot spot [24] and one amongst 200 identified, globally important eco-regions [25]. The state has a low population density of only 13/km2 [26]. The state is not only biologically diverse, but is furthermore home to a rich diversity of traditional communities with 26 major tribes and 110 subtribes. These various communities with their local biological resources have a considerable understanding of Nature and thus possess deep ethno-biological knowledge. The tribes are totally dependent for their livelihood on the forests and their resources and collecting certain plants and animals for food and folk medicinal purposes has been an age-old practice for them. Among the tribal communities of Arunachal Pradesh, the Nyishi and Galo are some of the more prominent tribes. By initially focusing on these two tribes for fear that before long information on their uses of insects as food and medicine might no longer be available, we continue the earlier work on uses of insects as food and medicines amongst North-East Indian tribals summarized by Meyer-Rochow in 2004 [21]. Our future and ultimate aim is to present an inventory of the various uses of insects for all major tribes in North East India.
Materials and methods
Extensive field surveys to record the various uses of insects amongst members of the Nyishi and Galo tribe were carried out in the two respective districts of East Kameng and West Siang in the north-east Indian state of Arunachal Pradesh. Ten villages, selected at random, were visited in each of the two tribal areas. The number of households per village was 12 - 20 (one village had 30). Frequently at least 2 houses were unoccupied, because the families had moved into the towns in search of work. At least two households inhabited by village elders and their families were visited. Recommendations by the headman or village elders to visit certain knowledgeable persons in another village were sometimes followed. The surveys were based on interviews during which a total of 20 persons aged between 45 and 70 years of age (12 male and 8 female) from each tribe were shown museum specimens or photographs of insects. The interviewed people were then asked simple questions in order to obtain information on the vernacular names of the edible or otherwise important insects, on seasonal availabilities, stages of insects consumed or used, mode of preparation, assumed therapeutic value, folklore related to insects and anything else deemed important in connection with the insect in question. As the knowledge of Hindi or English of the locals was often not great, our questions had to be simple and to the point.
Anzeige
Insects were collected from different habitats, e.g., ponds and streams, soils and farmland, shrubs and trees, grassland and dwellings. They were then preserved according to standard methods [27] and identified with the help of published keys [28‐31]. Where this was not possible, the insects were sent to Kolkata to be identified by entomological experts of the Zoological Survey of India.
Members of the Galo tribe, inhabiting the West Siang district of Arunachal Pradesh located at 94°02'E - 95°15'E and 27°29' N-29°23'N at altitudes between 60 - 5000 m. The region's climate is markedly continental in character with average annual rainfall of 3000 mm and temperatures ranging from 5°C in the month of December to 38°C in the month of July. The total population of the district, which is inhabited by not only members of the Galo, but also Adi, Memba and Khamba tribes, is approximately 105,000. Galo people make up roughly one fourth of the population and are found in the southern part of this district. Traditionally Galos practiced shifting cultivation, but nowadays wet rice and terrace cultivations have become common.
Nyishi people inhabit the East Kameng district of Arunachal Pradesh located at 92° 36' E - 93° 24' E and 26° 56' N - 27° 59' N. The district is shared by people of the Sulung, Aka, Miji, and Bangni Nyishi. This study explores only the ethno-entomological knowledge of the Bangni Nyishi and Sulung, designated, however, together as Nyishi in the following text, because their inextricably linked life-styles. The temperature of the region ranges from 17°C in the month of December to 27°C in the month of July and the altitude range is 360 - 1900 m. Total population is ca. 57,000 and literacy rate is 41%; population density 14/km2. The major part of the area inhabited by Nyishis is covered by forests, cropped areas being very limited. Settled agriculture is yet to take on in a sizeable manner and only 0.03% of the area of the district is under regular cultivation.
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Results and Discussion
Details on the taxonomic position as well as the vernacular names are given for insect species that are consumed by members of the two ethnic groups. The information with regard to edible species and the assumed therapeutic uses of insects was considered only reliable, when it came from at least 40% of the respondents. Despite this precaution, we do not consider this study to be a quantitative one and, therefore, wish to stress that this is a qualitative study and the first of its kind for any Arunachal Pradesh tribe.
An inventory on what is known to date on the edible insects of the two ethnic tribes of the studied areas is presented in Tables 1, 2, 3, 4 and 5. The present study revealed that a total of at least 81 species of local insects (including both identified and non identified species), belonging to 26 families and five orders, finds acceptance as food by the locals. Out of the 81 species, 9 are representatives of the Odonata, 17 of the Orthoptera, 16 of the Hemiptera, 15 of the Hymenoptera and 24 of the Coleoptera. Silk worms, sold at local markets, are being consumed, but were not entered into our list, because they were not locally grown and brought into the region from outside the district. Although some species belonging to orders like Ephemeroptera and Mantodea were mentioned by some of the people questioned by us, these species are also not included here, because the number of respondents mentioning these insects was considered to be too low to have the species registered as being regularly eaten. However, we cannot, of course, rule out that certain species of insects are fancied by some specific subsection of the population, are subject to food taboo restrictions [32] or eaten under particular conditions, so that in the future as more detailed information surfaces our list of edible insects is likely to grow in length.
Table 1
Inventory of edible Odonata
Scientific name
Family
English name
Vernacular name
Seasonal availability
Mode of intake
Remark
Enallagma sp.
Coenagrionidae
Azure bluet
Esh tat tani (G) Soko yoyo (N)
Sept-Oct
Larval stages are preferred Raw with bamboo shoot. Wings are discarded when adults are consumed. when adults are
Found near swampy areas. Not consumed by Nyishi people.
Ictinogomphus rapax
Gomphidae
Clubtail dragon fly
Esh tat tani (G) Soko yoyo (N)
Sept-Oct
Larval stages are preferred. Raw with bamboo shoot. Wings are discarded when adults are consumed.
Found near swampy areas. Not consumed by Nyishi people.
Stylurus sp.(?)
Gomphidae
Clubtail dragon fly
Ani asum (Larval form)(G) Yash kori (N)
Jan-Mar
Nymphs boiled, raw and as roasted paste. Nothing is discarded
Amongst flowering aquatic plants and in rivers and along banks.
Sympetrum sp.
Libellulidae
Cardinal meadow hawk
Esh tat tani (G) Soko yoyo (N)
Sept-Oct
Raw with bamboo shoot. Larval stages are preferred. Wings are discarded when adults are being consumed.
Found near swampy areas. Not consumed by Nyishi people.
Brachythemis contaminata
Libellulidae
Ditch jewel
Esh tat tani (G) Soko yoyo (N)
Sept-Oct
Larval stages are most preferred. Raw with bamboo shoot. Wings are discarded when adults are consumed.
Found near swampy areas. Not consumed by Nyishi people.
Urothemis sp.(?)
Libellulidae
Dragon fly
Esh tat tani (G) Soko yoyo (N)
Sept-Oct
Larval stages are most preferred. Raw with bamboo shoot. Wings are discarded when adults are consumed.
Found near swampy areas. Not consumed by Nyishi people.
Pachydiplax sp. (?)
Libellulidae
Blue dasher
Esh tat tani (G) Soko yoyo (N)
Sept-Oct
Larval stages are most preferred. Raw with bamboo shoot. Wings are discarded when adults are consumed.
Found near swampy areas. Not consumed by Nyishi people.
Diplacodes sp.
Libellulidae
Chalky percher
Soko yoyo (Yare) (N)
Perennial
Larval stages are considered edible. Roasted
Not consumed by Galo people.
Unidentified
Esh tat tani (G) Soko yoyo (N)
Sept-Oct
Raw with bamboo shoot. Larval stages are edible. Wings are discarded when adults are consumed
Found near swampy areas. Not consumed by Nyishi people.
? to be confirmed here in Odonata. Mostly the larval stages are consumed. However, adult stages may also be consumed depending upon the catch.
Table 2
Inventory of edible Orthoptera
Scientific name
Family
English name
Vernacular name (G = Galo; N = Nyishi)
Seasonal availability
Mode of intake
Remark
Chondacris rosea
Acrididae
Short horned grasshopper
Mirbo (G) Takam kamrak (N)
Sept-Nov
Adult stage is consumed boiled, fried, or as paste (chutney). Some insects are smoked for further use. Wings, appendages and lower portion of abdomen are discarded.
Economically important, because of its taste and palatable size.
Heiroglyphus sp.
Acrididae
Short horned grasshopper
Mirbo (G) Eshi tech takam (N)
Sept-Dec
Adult stage is consumed. Fried, used with boiled vegetables or paste (chutney) to take with local alcohol/beverage. Antennae and appendages are discarded.
Highly esteemed by all age groups. Collected from paddy fields.
Diabolocanthops innotabilis
Acrididae
Clown grasshopper
Ili konkam (G) Timi kamchi (N)
Sept-Oct
Adult stage is consumed. Fried and boiled or smoked. Antennae and wings are discarded.
Moderately liked by all age groups.
Schistocerca sp.
Acrididae
locust
Komak joba(G) Takam soik (N)
Sept-Nov
Adult stage is consumed. Fried and boiled with some leafy vegetables. Wings, antennae, appendages and lower portion of abdomen (supposed to contain intestinal parasite) are discarded.
Esteemed by all age groups.
Leptysma sp. (American genus, but given as such by Zool Survey of India, Kolkata)
Acrididae
Short horned grasshopper
Takam hilak (G) Takam pario tokcho (N)
Aug-Oct
Adult stage is consumed. Boiled, roasted and paste is made. Anal cirri and antennae are discarded.
Esteemed by all age groups.
Brachytrypes sp. (African genus, but given as such by Zool Survey of India, Kolkata)
Gryllidae
Cricket
Yarup (G) Takam Yarup (N)
Sept-Nov
Adult stage is consumed. Fried, used in boiled vegetables or as paste (chutney) to take with local alcohol. Antennae and limb appendages are discarded.
Highly preferred by all age groups.
Tarbinskiellus orientalis
Gryllidae
Cricket
Komdruk (G)
May-Sept
Adult stage is consumed. Fried or roasted.
--
Gryllotalpa sp.
Gryllotalpidae
Mole cricket
Yarup (G) Takam gajir (N)
Sept-Dec
Adult stage is consumed. Boiled, roasted and as paste. Nothing is discarded.
This insect is also used as bait to catch fowl, bird, fishes, etc.
Unidentified
Phaneropteridae
Round headed katydid
Kombuk (G) Atu rungne (N)
Sept-Oct
Adult stage is consumed. Fried, paste (chutney) is made and boiled. Antennae are discarded.
A very sought after food insect; liked by everyone.
Schizodactylus monstrosus
Schizodactylidae
Sand cricket
Nyanyir (G) Ayu pokung (N)
May-July
Adult stage is consumed fried or roasted.
Not consumed by Nyishi people.
Conocephalus sp.
Tettigoniidae
Katydid
Kombuk (G) Atu rungne (N)
Sept-Oct
Adult stage is consumed fried or as paste (chutney) and boiled. Antennae are discarded.
A highly esteemed food insect for everyone.
Arachnacaris sp.
Tettigoniidae
Katydid
Kombuk (G) Atu rugnu hoie (N)
Sept-Oct
Adult stage is consumed fried and boiled or roasted. Appendages and antennae are discarded.
Preferred by children.
Microcentrum sp. (American genus, but given as such by Zool Survey of India, Kolkata)
Tettigoniidae
Katydid
Abo ngomdir (G) Takam yash (N)
Aug-Oct
Adult stage is consumed. Boiled with vegetables. Wings are discarded.
Consumed by all age groups, but no by Nyishi people.
Chloracris brullei
Tettigoniidae
Katydid
Komle (G) Paie kamge (N)
Sept-Oct
Adult stage is consumed boiled or as paste. Wings and antennae are discarded.
Consumed by all age groups.
Unidentified
Tettigoniidae
Katydid
Mir apo (G) Kamar dodar (N)
Sept-Oct
Larval form is consumed. Paste is made along with dried bamboo shoot.
Larvae are preferred to adults.
Unidentified
Tettigoniidae
Katydid
Yan pedak (G) Atu rungne (N)
Aug-Nov
Adult stage is consumed boiled and roasted. Wings and appendages are discarded.
Adults are preferred to larvae.
Unidentified
Kompe rene (G) Eshi tech takam (N)
Aug-Oct
Adult stage is consumed fried and boiled. Antennae to be discarded.
Consumed by all age groups.
Table 3
Inventory of edible Hemiptera
Scientific name
Family
English name
Vernacular name (G = Galo; N = Nyishi)
Seasonal availability
Mode of intake
Remark
Lethocerus indicus
Belostomidae
Giant water bug
Isi tari
Round the year
Boiled or fried as adult consumed
--
Tibicen pruinosus (American species, but given as such by Zool Survey of India, Kolkata)
Cicadidae
Annual cicada
Nyani (G) Laptung bargi (N)
Apr-June
Adult stage is consumed. Boiled or as paste. Wings are discarded.
Diurnal singer; stops menstrual cycle if taken in larger quantities.
Cyclochila virens (Australian species, but given as such by Zool Survey of India, Kolkata)
Cicadidae
Greengrocer cicada
Nyare tasi (G)
May-Aug
Adult stage is consumed. Roasted or as paste. Wings are discarded.
Diurnal singer. Not consumed by Nyishi.
Euterphosia crowfooti
Cicadidae
Cicada
Gopu goye (G) Yadung nengne (N)
May-July
Adult stage is consumed. Roasted or as paste. Wings are discarded.
Diurnal singer.
Pycna repandar
Cicadidae
Cicada
Gopu goye (G) Yato rugne (N)
May-July
Adult stage is consumed. Roasted or as paste. Wings are discarded
Diurnal singer.
Aspongopus sp.
Pentatomidae
Stink bug
Rishu (N) Rishu punyo (G)
Dec - Feb
Adult stage is consumed. Fried or boiled with vegetables.
--
Alcaerrhynchus grandis (American species, but given as such by Zool Survey of India, Kolkata)
Pentatomidae
Stink bug
Rishu (N) Rishu punyo (G)
Dec - Feb
Adult stage is consumed. Fried or boiled with vegetables.
Not consumed by Galo people.
Tessaratoma quadrata
Tessaratomidae
Stink bug
Tari (G) Agu chena rekok (N)
Feb-Mar
Adult stage is consumed. Raw or turned into chutney. Wings are discarded.
Large insect; considerable knowledge is required to avoid poisonous mimic. Not consumed by Nyshi as the bug bites and may cause fever.
Halyomorpha picus
Pentatomidae
Stink bug
Tari (G) Rishu (N)
Nov-Feb
Adult stage is consumed. Raw paste (chutney) is made. Head or in some cases abdomen is discarded.
Aspongopus nepalensis
Pentatomidae
Stink bug
Tari Gondhi bug/gondhipuk (G, N)
Nov-Feb
Adult stage is consumed. Part of abdomen is discarded to avoid pungent taste; raw or as chutney.
Excessive consumption causes hallucination.
Nezara viridula
Pentatomidae
Stink bug
Rishu (N) Rishu punyo (G)
Dec - Feb
Adult stage is consumed. Fried or boiled with vegetables.
Not consumed by Galo people.
Unidentified
Pentatomidae
Stink bug
Rishu (N)
Dec - Feb
Adult stage is consumed. Fried or raw paste is made.
--
Dalader acuticosta
Coreidae
Plant bug
Rishu (N) Rishu punyo (G)
Dec - Feb
Adult stage is consumed. Fried or raw paste is made.
Causes burning sensation in body. Not consumed by Galo people.
Mictis tenebrosa
Coreidae
Plant bug
Rishu (N) Rishu punyo (G)
Dec - Feb
Adult stage is consumed. Fried or raw paste is made.
Not consumed by Galo people.
Antilochus coqueberti
Pyrrhocoridae
Red bug
Rishu (N) Rishu punyo (G)
Dec - Feb
Adult stage is consumed. Fried or boiled with vegetables.
Not consumed by Galo people.
Unidentified
Bug
Rishu (N) Rishu punyo (G)
Dec - Feb
Adult stage is consumed. Fried or boiled with vegetables.
Not consumed by Galo people.
Table 4
Inventory of edible Hymenoptera
Scientific name
Family
English name
Vernacular name (G = Galo; N = Nyishi)
Seasonal availability
Mode of intake
Remark
Vespa sp.
Vespidae
Wasps
Rego (G) Pacha yadam (N)
Nov-Jan
Adult forms are preferred. Fried, fresh one is chewed, wings are discarded. Though larvae pupae are also consumed
Fresh insects are chewed and chitinous discarded material is collected and used for metallurgical processing. Not consumed or used by Nyishi.
Polistes sp.
Vespidae
Potter wasp
Bere (G) Hupu hum yalang (red) (N)
Nov-Feb
Adult forms are preferred. Fried, fresh is chewed, wings are discarded, but larvae and pupae are also consumed.
Used in metallurgical processing.
Polistes sp.
Vespidae
Paper wasp
Oye nigona (G) Hupu hum yalang (N)
Nov-Feb
Larvae are collected along with bee hive and then smoked. Adult and larvae both are preferable, in case of adult wings are discarded.
--
Unidentified
Vespidae
wasp
Iddum (G) Tee (N)
Nov-Jan
Adult forms are preferred. Roasted, boiled, smoked or paste is made, wings are discarded.
--
Unidentified
Vespidae
wasp
Iddum ago (G) Hoie (baby of tee) (N)
Nov-Dec
Both adult and larval form are consumed though larval form is preferred a lot Fried or boiled, wings are discarded.
Larval stage is preferred.
Unidentified
Vespidae
wasp
Iddum tupte (G) Tatang (N)
Oct-Dec
Adult stage is consumed. Boiled with bamboo shoot, wings are to be discarded.
Adults are preferred
Unidentified
Ichneumonidae
Ichneumonid wasp
Bere (G) Gacha ganga hoie (young) (N)
Oct-Dec
Adult stage is consumed. Fried and paste is made, wings and terminal end of appendages are discarded.
Esteemed by all age groups.
Eumenes sp.
Vespidae (Eumenidae)
Potter wasp
Ite paglum (G) Gacha ganga hoie (mother) (N)
Nov-Dec
Larvae are eaten directly. Pupae stage is boiled or paste is made.
Larval form is highly preferred.
Unidentified
Vespidae
Wasp
Rele botu (G) Taga (N)
Dec-Feb
Egg, larvae, pupae, and adult stages are consumed. Egg/larvae are dried and boiled or turned into a paste; adults have wings discarded before consumption.
Egg/larvae most preferred.
Vespa orientalis
Vespidae
Wasp
Gapu (G) Gunya (N)
Nov-Feb
Larvae are collected along with nest and smoked; wings are to be discarded in case of adult insect consumption.
Larval stage is highly esteemed.
Apis cerana
Apidae
Honey bee
Tangik, (G) Tungu (N)
Nov-Jan
Adult and larval stages are consumed roasted and in form of a paste. Wings and antennae are discarded.
Preferred by all age groups.
Apis sp.
Apidae
Honey bee
Bere rusup (G)
Nov-Jan
Adult stage is consumed. After frying a paste is made and consumed with food; wings are discarded.
Not consumed by Nyishi.
Xylocopa sp.
Xylocopidae
Carpenter bee
Itum galum (G)
Nov-Mar
Adult and larval stages are consumed in boiled form; wings are to be removed in case of adult.
Not consumed by Nyishi.
Oecophylla smaragdina
Formicidae
Weaver ant
Tonge/Babuk (G) Babuk(N)
All year round
Adult and larval forms, both are consumed raw.
Table 5
Inventory of edible Coleoptera
Scientific name
Family
English name
Vernacular name (G = Galo; N = Nyishi)
Seasonal availability
Mode of intake
Remark
Sternocera sp.
Buprestidae
Jewel beetle
Togum (G) Jorjo punyo (N)
June-July
Adult form is preferred. Boiled or smoked.
Not consumed by Galo people
Oplatocera sp.
Cerambycidae
Long horned beetle
Rigyo tapum (G) Sikse regret (N)
June-July
Adult form is preferred. Smoked, roasted or boiled. Wings and appendages are discarded.
Preferred by old people; may cause hair loss in adults. Not consumed by Galo.
Aristobia sp.
Cerambycidae
Long horned beetle
Anyo tapum (G) Sikse regre (N)
June-Aug
Adult form is preferred. Smoked, roasted or boiled. Wings are discarded
Not consumed by Galo.
Batocera roylei
Cerambycidae
Long horned beetle
Anyo tapum (G) Sikse regret (N)
June-Aug
Both larval and adult forms are taken. Smoked, roasted or boiled. Wings are discarded
Not consumed by Galo.
Xylorhiza sp.
Cerambycidae
Long horned beetle
Tani ane (G) Sikse regret (N)
June-Sept
Larval form is preferred. Boiled or fried.
Monochamus versteegi
Cerambycidae
Long horned beetle
Sikse regret (N)
June-Sept
Adult form is preferred. Smoked, roasted or boiled. Wings are discarded.
Not consumed by Galo.
Unidentified
Cerambycidae
Long horned beetle
Anyo tapum (G) Sikse regre (N)
June-Aug
Adult form is preferred. Smoked, roasted or boiled. Wings are discarded.
Not consumed by Galo.
Unidentified
Cerambycidae
Long horned beetle
Anyo tapum (G) Sikse regre (N)
June-Aug
Adult form is preferred. Smoked, roasted or boiled. Wings are discarded.
Not consumed by Galo.
Dorcus sp.
Lucanidae
Stag beetle
Tonge lote (Male) (G) Tapu yagar nya (Male) (N)
Aug-Sept
Both larval and adult stages are preferred. Roasted, boiled or paste (chutney) preferred with alcohol. If consumed as adults, antennae and appendages removed.
Stem borer remains inside the bamboo shoot. Both adult and larvae are consumed.
Prosopocoilus sp.
Lucanidae
Stag beetle
Tonge ane (Female) (G) Tapu yagar nya (Male) (N)
July-Sept
Both larval and adult form are consumed. Larval stage is highly preferred because of high amount of fat content and its taste.. Adults are roasted and culminated with shoots of bamboo for intake, antennae and appendages are discarded.
_
Odontolabis gazella
Lucanidae
Stag beetle
Tonge (G) Tapu yagar nya (Male) (N)
July-Sept
Both larval and adult form are consumed. Larvae are fried slightly in oil and are added to boiled vegetables. It can be directly boiled with certain leafy vegetables. The larvae are rich in fat content. Appendages and antennae are discarded when adult is preferred.
Pest of bamboo, found inside bamboo shoot; can lead to death of whole bamboo plant
Odontotaenius sp.
Passalidae
Bess beetle
Esi nonge (G) Tapu yagar nym (N)
June-Aug
Both larval and adult form are consumed though larvae is preferred mostly than adult Roasted, smoked or boiled with vegetables (oiik). If boiled or fried wings are discarded.
In between ark and wood of tree.
Polyphylla sp. (or related genus)
Scarabaeidae
Scarab beetle
Tonge (G) Tapu yagar nym (Female) (N)
June-Aug
Both larval and adult forms are consumed though larvae is preferred than adult. Roasted. Antennae and appendages are discarded.
Pest of orange tree.
Xylotrupes gideon
Scarabaeidae
Rhinoceros beetle
Tonge (G) Tapu yagar nym (Male) (N)
May-July
Adult forms are preferred. Roasted, boiled
--
Catharsius sp.
Scarabaeidae
Cow dung beetle
Apo hunik (G) Ering dochu(N)
June-Aug
Adult forms are preferred. Wet paste is made and given to children during diarrhea. Body cover is discarded.
Not consumed by Nyishi people.
Allomyrina dichotoma
Scarabaeidae
Japanese rhinoceros beetle
Tapum (G) Rukching pungi (N)
June-Aug
Adult forms are preferred. Boiled, roasted and steamed for further use. Appendages are discarded.
Found on rotting bark amongst leaf litter on the ground.
Lepidiota sp.
Scarabaeidae
Christmas beetle
Apu nine (G) Tapu yagar nym (Female) (N)
Aug-Sept
Adult forms are preferred. Boiled or smoked.
Not consumed by Galo.
Anomala sp.
Scarabaeidae
Scarab beetle
Apu nine (G) Tapu yagar nym (Female) (N)
Aug-Sept
Adult forms are preferred. Roasted or boiled.
Not consumed by Galo.
Propomacrus sp.
Scarabaeidae
Scarab beetle
Sig re rigre (N)
June-Sept
Adult forms are preferred. Smoked, roasted or boiled. Wings are discarded.
Not consumed by Galo.
Unidentified
Scarabaeidae
May chafer
Hi tayabo (G) Jorjo punyo (N)
June-Aug
Adult forms are preferred. Smoked, boiled and roasted for culinary paste. If taken in boiled form wings are discarded.
Less preferred.
Unidentified
Scarabaeidae
Scarab beetle
Apu nine (G) Tapu yagar nym(Female) (N)
Aug-Sept
Adult forms are preferred. Smoked or boiled. Wings and appendages are discarded.
Not consumed by Galo.
Unidentified
Eh pako (N)
June-Sept
Adult forms are preferred. Smoked, roasted or boiled. Wings are discarded.
Found in bamboo plant. Not consumed by Galo.
Unidentified
Scarabaeidae
Chafer beetle
Apo hunik (G) Jorjo punyo (N)
June-Sept
Adult forms are consumed. Smoked, boiled and roasted for culinary paste. If taken in boiled form wings are discarded,
Found in large amounts, but less preferred.
Trictenotoma sp.
Trictenotomidae
Borer beetle
Sig re rigre (N)
June-Sept
Adult forms are preferred. Smoked, roasted or boiled. Wings are discarded.
Not consumed by Galo.
Seasonal availability
Although edible insects generally occur throughout the year, their densities and diversities are determined by their food plants as well as by seasonal conditions. Observations on the seasonal availability (cf. Tables 2, 3, 4, 5) of the edible insects indicated that the maximum number of edible Coleopterans occurred during June to September (pre monsoon and monsoon) and then got reduced during winter and early spring. Seasonal trends were also observed in some Odonata and Orthopterans, which were most abundant in September and October (late summer). Insects belonging to the Hemiptera and Hymenoptera were found to be restricted to the period lasting from November to February (winter). Some edible insects like certain bugs and ants were found to be available (and used) throughout the year.
Stages and modes of insect consumptions
Members of both tribes ate immature as well as adult stages of insects. However, in some cases, as with virtually all of the Odonata whose aquatic larvae were greatly preferred to the flying adults, only immature insects were consumed, but in others, as with the Orthoptera and Hemiptera the adult stages were more highly appreciated. Katydid species were an exception and preferred as wingless, immature specimens. Hymenopterans were eaten at all development stages: eggs, larvae, pupae and adults and even their products like honey, propolis, and wax were used. Most of the edible beetles were consumed as adults, although some like Xylorhiza sp. were clearly preferred in their larval stages. The beetles Prosopocoilus sp. and Odontolabis gazilla were consumed equally readily as larvae and adults. Preference for larval or adult stages almost certainly depended on a variety of factors: palatability of the insects (which may change between developmental stages), availability and the convenience with which the sought-after insects can be obtained, and furthermore taboos or religious beliefs may be involved. With regard to Odonata their aquatic larvae are clearly easier to collect than their adults and for Coleoptera with their wood-boring grubs the same would hold true.
Methods to prepare the edible insects for human consumption include roasting, boiling, or frying. Pentatomid bugs and honeybees, however, are being consumed both raw and roasted. Members of the two ethnic tribes interviewed by us explained that they possess various ways to improve the taste of an insect dish. Short-horned grasshoppers (Acrididae), for instance, are fried in oil after having their wings removed and are then simply eaten with salt. The insects, however, may also be stuffed in a bamboo pipe, smoked dry for 3-4 days, mixed with chili and salt and then added to rice meals. Long-horned grasshoppers (Tettigonidae), collected in smaller numbers than their short-horned cousins because of the solitary habits of the former, are roasted or fried in oil after having their wings removed. They are usually fed to children or aged persons.
Anzeige
Crickets and mole crickets (Gryllidae and Gryllotalpidae) are collected mostly during summer nights between the months of May and July. Yet the most highly valued orthopteran food insects amongst the Galo are Asian dune crickets of the species Schizodactylus monstrosus (Schizodactylidae). Freshly collected specimens are put inside a bamboo pipe and smoked dry for nearly one week. Completely dried material is then crushed into a powder and mixed with chili peppers, salt and bamboo shoots to form a special type of chutney. This chutney is taken with rice or with a local drink known as Apung and is regarded as most delicious by all members of the tribe irrespective of age and sex. Insect chutneys can also be based on other species, raw or dried, which are turned into a paste with chili and salt. Pentatomid bugs like Aspongopus nepalensis and other species, collected from river banks, are also highly appreciated in the form of a chutney by members of both tribes.
Comparisons between the two tribes with respect to edible insects
Similarities and differences (Figure 2) of the entomophagy habits between the two tribal groups exist. In both tribes species belonging to five orders of insects are being consumed and modes of intake as well as stages of insects taken are quite similar between the two tribes. However, the total number of species consumed by the Nyishi Bangni of the East Kameng district is higher than that of the Galo of the West Siang district. In the West Siang district mostly Orthoptera followed by Hymenoptera and Odonata serve as food, but in the East Kameng district Coleoptera followed by Hemiptera are more frequently taken. The consumption of insects belonging to the remaining orders is rather similar between Galo and Nyishi: for the Orthoptera the figure was 17 : 15 species and for the Hymenoptera it was 15: 12. With regard to the consumption of Odonata, however, the difference was 8:2 between Galo and Nyishi, while the respective values for Hemiptera and Coleoptera were 9:14 and 11:23. The reason for these differences could be related to the Galo practice of wet rice and terrace cultivation, in other words to the different agricultural practices, which in case of the Galo provide environments especially conducive to the Orthoptera and Odonata. The territories, which the Nyishi inhabit are mostly covered by forests with cropped areas for agriculture limited to only 0.03%. Thus the forest environment combined with indigenous food acquisition practices are the major reasons for the greater consumption of Coleoptera rather than Orthoptera and Odonata by the Nyishi people of East Kameng.
Figure 2
Numbers of insect species in 5 major orders consumed by members of the Nyishi and Galo tribes
×
During the field visits some Galo respondents explained that according to their belief system the use of Odonata by humans mirrors that of "the fishes that take them"; consequently these insects had to be good. The acceptability of insects as food by any indigenous society depends to a large extent on the traditions and beliefs of the society [32]. Species of the beetle genus Batocera are amongst the most widely accepted Coleoptera as food, being reported from Indonesia, Philippines, Sri Lanka and Papua New Guinea [33]. In the East Kameng district, Nyishi people consume Batocera spp. but in West Siang the Galo are not accepting these beetles. Some scarabaeid species, belonging to the genera Lepidiota, Anomala, and Propomacrus are consumed by Nyishi, but not Galo people. Catharsius sp. is one of the favourite insect food items of the Galo, but not the Nyshi people. Some of the pentatomid and pyrrhocorid bugs are rejected from the list of edible insects by the Galo, as the Galo believe these bugs are hallucinogenic, neurotoxic, allergenic and even fatal if ingested in large quantities. To avoid undesired reactions caused by the consumption of certain species of insects, sometimes highly specific preparation methods exist and frequently appendages that can cause some allergic reactions and, in the case of some bugs, parts of the abdomen that may contain hallucinogens or neurotoxins are removed by the Galo people. Obviously utilitarian principles are involved [34] and the fact that a food item, acceptable to one tribe, is rejected by the neighbouring tribe would remove, of course, pressure from the resource and makes good ecological sense [35].
Comparisons between the two tribes with respect to insects assumed to possess therapeutic properties
The use of natural resources for therapeutic purposes is as old as humankind and continues around the world to this day. Ethnobiological knowledge has been passed on from generation to generation and one ought to expect that age-old practices valued to this day must be based on experience and fulfil a need. One part of our study, therefore, focuses on the traditional knowledge of insects with therapeutic properties. Although insects (species as well as individuals) are extremely numerous in Arunachal Pradesh, members of the various ethnic groups never collect and consume insects in a haphazard, random and unselective fashion, but follow unwritten rules and traditions. The traditions not only govern which species can be collected and taken as food, but extend to the insects' therapeutic uses. Species considered medicinally important by the Galo and Nyishi are listed in Table 6. The local people use the insects in home remedies not only for themselves but for their domesticated or semi-domesticated live stock as well.
Table 6
Inventory of Therapeutic insects
Scientific Name
English name
Vernacular Name (Galo = G; Nyishi = N)
Part used
Indication
Prescription
Remark
Apis cerana, A. florae, A. mellifera (Hymenoptera: Apidae)
Honey bee
Taer, Tang, Unya, Aati (G) Ngunya, Taer, Tangu (N)
One spoon 2-3 times per day till completely cured Comb/wax Externally rubbed on skin irritation
Excessive use of honey causes adverse effect.
Polistes sp. Vespa orientalis (Hymenoptera: Vespidae)
Potter wasp
Bere, Taga/Gaying (G)
Whole insect, wings are removed
Coughs & colds, stomach disorders
Insects are directly allowed to bite or sting person suffering from cough & cold
Used in metallurgical process too (some respondents only).
Bothroponera rufipes (Hymenoptera: Formicidae)
Black ant
Yapek gane (G) Torup (N)
Whole body
1. Scabies, toothache; high blood pressure, boils, wounds malaria, dysentery, chest pain in humans 2. Foot and mouth disease of mithun cattle (N) 3. Maggots/worm infections of cattle
1. Ants are crushed into paste and applied on effected parts for scabies, wounds and boils. Ground-up ants are mixed with water and gurgled for some time for toothache. Intake of 1-2 ant per day reduces blood pressure. Intake of crushed ant along with other edibles during morning hour good for malaria. 2. 1-2 ants crushed into powder and mixed into any kind of fodder and fed one to two times a day depending upon the persistence of the disease. 3. Dried ants are mixed with warm water to wash the infected portion after removing the maggots from the wounds.
If fed in larger quantity, cattle becomes weak and inactive.
Tetraponeraa rufonigra (Hymeoptera: Formicidae)
Iron ant
Rukdam (G), Ruder (N)
Whole body
Foot and mouth disease of mithun cattle (N)
Fed 1-3 times per day according to persistence of disease. 1-2 ants crushed into powder and mix into any kind of fodder.
If fed in larger quantity cattle becomes weak and inactive. The effect of this species is much less than that of black ant.
Oecophylla smaragdina (Hymeoptera: Formicidae)
Red tree ant or weaver ant
Babuk (G, N)
Whole body
Stomachache and dysentry
One full colony is fried without oil; Smoked dried, mixed with salt and taken as small amount once a day till recovered.
_
Oecophylla smaragdina (Hymeoptera: Formicidae)
Red tree ant or weaver ant
Babuk aan (N) Tonge(G)
Whole body (N) Larvae (G)
Stomach pain, Fever
1 or 2 queen ants boiled and swallowed. Larvae are taken raw or boiled to lessen fever.
_
Ephemera danica
Mayfly
Nymph
Stomach disturbance
Roasted or boiled nymphs are consumed as food
Cantharid sp. (Coleoptera: Cantharidae)
Beetle
Aputita (G)
Whole body
Skin allergy
--
_
Lepidiota sp. (Coleoptera: Scarabaediae)
Beetle
Aputita, Apu nine (G)
Whole body
Skin allergy
--
_
Catharsius sp. (Coleoptera: Scarabaeidae)
Beetle
Apu hanik (G)
Body cover is removed
Diarrhoea
Wet paste is made and given during acute diarrhoea
Several species of pentatomid bugs (Hemiptera: Pentatomidae)
Pentatomid stink bugs
Rishu punyo (G)
_
_
_
Hallucinogenic, may cause allergies and some spp. considered neurotoxic
Cicada
_
_
_
Not to be touched or killed by pregnant women. Thought to affect developing baby (baby starts crying in cicadal voice), but ok if both husband and wife touch or kill the insect together at the same time
Tibicen pruinosus (Hemiptera: Cicadidae) (American species, but given as such by Zool Survey of India, Kolkata)
Cicada
Laptung bargi (N)
_
_
_
Thought to stop menstrual cycle when consumed
(Hemiptera: Pentatomidae)
Pentatomid bug
Rishu (N)
_
_
_
Burning sensation occurs in body
Anzeige
During the field survey it was observed that the inhabitants of the most remote villages do not have much of a concept of diseases like diabetes, hepatitis, cancer to name but a few. They are mostly aware of coughs, colds, fever, stomach troubles, skin disorders, pains in the body and other obvious signs of illness. Therefore, our list is only based on the information given by the locals on diseases they recognize. We also observed that the locals prefer their own home remedies to medicines they do not know (and subsequently do not trust). It became obvious, however, that both tribes visited by us use very similar types of insect-based remedies (Table 6). Moreover, they both agree on which part or parts of an insect can be considered poisonous and this information is also presented in Table 6. As with the earlier inquiry into edible species, we considered the information given to us only sufficiently reliable and thus recordable when the same information came from at least 40% of the respondents. The one exception we allowed concerned the therapeutic use of mayflies, which we noted down even if only 35% of the respondents had mentioned it.
Our study identified twelve species of insects that were therapeutically used. Out of the twelve, eight species serve as the raw material for the treatment of two or more diseases. Species of the order Hymenoptera are the therapeutically most widely used insects, but the Coleoptera also feature with three medicinal species. Most of the therapeutic insects are taken raw or boiled and they are being used primarily to remedy stomach disorders, coughs and colds, skin allergies, boils, malaria, blood pressure anomalies, scabies (in case of humans) and foot and mouth disease of bovids like mithun and cattle. Galo as well as Nyishi make use of whole insects and not individual body parts, but the Galo use a greater variety of species than the Nyishi. The fact that Nyishi know more edible insect species than Galo people, but Galos value insects more from a therapeutic angle, confirms Meyer-Rochow's prediction of the greater persistency of therapeutic rather than dietary uses of insects [36].
The use of honey and bee's wax is common among members of both tribes to treat coughs and colds and apparently has a long history. Honey is considered to soothe the inflamed membranes of the mucus-secreting tissue of the upper respiratory tract and to relieve irritating symptoms that lead to difficulties in swallowing. Honey and wax are components of several Ayurvedic formulations, but whether their use entered Nyishi and Galo traditions from Ayurvedic teachings or was independently discovered by members of these tribes is unknown.
Wasps are also being used in the treatments of coughs, colds, and stomach disorders. Freshly killed wasps are meant to be chewed, but not swallowed, and said to provide strength to a patient. Wasps have also been reported as parts of the folk medicine of various Latin and South American cultures [37, 38], as well sub-Saharan Africa, where they are often associated with strength on account of their sting [39]. Another medicinally-useful insect to the Nyishi and Galo is the blister beetle, which is said to help against skin allergies. As with the wasps, blister beetles, too, have in the past been used therapeutically in many parts of the world [16, 38, 40] and especially in Europe used to be a regular item on the shelves of pharmacies [41].
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The use of ants amongst the Nyishi and Galo is also significant. These formic acid containing insects are being used in connection with scabies, malaria, tooth aches, stomach disorders, blood pressure anomalies, etc. in humans and foot and mouth disease as well as worm infections in cattle. Soil dwelling ants have been shown to produce compounds that kill both fungi and bacteria in their underground nests [42] and a paste made from termites (although not ants, but seen as related to ants by the local people) applied to an injured sheep or goat to speed up the healing of their wounds has been described from India [43]. Australian Aborigines, too, were apparently aware of the anti-inflammatory effects of crushed insects (in their cases cockroaches) rubbed into a wound [44] and western-trained surgeons even to this day are using maggots to clean up flesh wounds in both humans [45‐47] and animals [48].
Sharma and Khan [49] observed that drugs of insect origin used by the tribal population of the Garo Hills of Meghalaya (N.E. India) are more common than those of mammalian origin. Although the reverse appears to hold true for the Galo and Nyishi tribes of Arunachal Pradesh, even here, as we have seen, insects play important roles in the treatment of disorders. As has been documented insects can be a source of drugs used in modern medicine, since compounds of insect origin can have immunological, analgesic, antibacterial, diuretic, anaesthetic and anti-rheumatic properties [17, 50]. In fact, anti-microbial peptides were first discovered in insect larvae by Dr. Hans Boman of the Karolinska Institutet [51] and compounds, derived from chitin, have been used as anti-coagulants, become involved in the repair of various tissues on account of their effects on the auto-immune system, and even found an application in the fabrication of contact lenses [52].
The numerous chemicals that arthropods possess in their armament to defend themselves may either be products manufactured by them alone or represent derivatives of substances obtained from plants or prey [53‐55]. It is interesting to note that arthropods and plants frequently utilize the same chemicals when repelling an attack against them [56]. It is likely that identical or at least similar compounds are also used by them to fight fungal, bacterial and viral infections. Since plants or their chemicals constitute one of our largest sources of drug material [57], it is reasonable to expect pharmacological activities from those arthropods that feed on drug-producing plants and allow their defensive substances to become concentrated in the arthropod's body. As the number of insect species used effectively by the Nyishi and Galo to treat certain afflictions indicates, traditionally-living tribals like them have apparently known this for generations.
Conclusion
Unfortunately the availability of all types of modern food stuffs and the degradation of resources makes ethnic people worldwide (and the Galo and Nyishi are no exception) inclined to abandon their traditions and discard their rich indigenous knowledge. This is particularly lamentable in view of the fact that from a nutritional aspect, the traditional food is often not only healthier, it is also the product of generations of harmonious co-existence between tribe and environmental resource. The flipside of the coin is that due to unprecedented population increases, the resources of the forest, including food insects, can become over-exploited and this has apparently already resulted in the diminishment of biotic resources (including edible insects and species deemed therapeutically useful by the local people) in some parts of North-East India (Changkija 2010, personal communication). Although hard data are not (yet) available, many of our informants indicated that it has become increasingly more difficult to collect useful insect species. Therefore, we see an urgent need to assess insect biodiversity and the role of ethno-entomology together and not separated from each other. On the one hand, we feel that it is important to make sure that practices of entomophagy and entomotherapy do not disappear; on the other hand, we need to protect the biodiversity of the region and to conserve the valuable insect resources found in this region for posterity. Squaring these two demands (conservation of indigenous practices and prevention of over-exploitation of insects considered useful) must be a priority task for the future development of the region.
Acknowledgements
The authors are thankful to the University Grants Commission, New Delhi, for the financial support through a project grant by the Department of Science and Technology, New Delhi, to Professor J. Chakravorty. Thanks are also to Rajiv Gandhi University, Arunachal Pradesh, India, and Jacobs University Bremen, Germany, for providing facilities, and to the Zoological Survey of India, Kolkata, for the identification of the insects.
Open Access
This article is published under license to BioMed Central Ltd. This is an Open Access article is distributed under the terms of the Creative Commons Attribution License (
https://creativecommons.org/licenses/by/2.0
), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Competing interests
The authors declare that they have no competing interests.
Authors' contributions
JC carried out the field work and supervised SG's research. SG participated in the field work and identification of the insects. VBM-R began the ethno-entomological studies in North-East India and participated in the design, coordination, and drafted the final manuscript. All authors read and approved the final manuscript.
Practices of entomophagy and entomotherapy by members of the Nyishi and Galo tribes, two ethnic groups of the state of Arunachal Pradesh (North-East India)
verfasst von
Jharna Chakravorty Sampat Ghosh Victor Benno Meyer-Rochow
