Skip to main content
main-content

24.01.2017 | Original Article | Ausgabe 3/2017

Comparative Clinical Pathology 3/2017

Histopathological study in wild freshwater stingrays Potamotrygon motoro in the Peruvian Amazon

Zeitschrift:
Comparative Clinical Pathology > Ausgabe 3/2017
Autoren:
Fernando C. Ramos-Espinoza, Carlos T. Chuquipiondo, Enrique M. Serrano-Martínez

Abstract

The genus Potamotrygon comprises stingrays endemic to South American rivers. Potamotrygon motoro is a popular Amazonian species in ornamental fish trade. Histopathological studies of these species allow knowing the health status of these specimens. The objective of the present study was to investigate the occurrence of histopathological alterations in some tissues of the Amazonian freshwater stingray Potamotrygon motoro. Thirty-one specimens were collected from the Amazon basin and transported to a commercial aquarium in district of Juan Bautista, province of Maynas, department of Loreto, Peru. The histopathological study showed monogeneans in gills (2/31), Piscinoodinium pillulare in gills and skin (2/31), digenean metacercariae in liver (3/31), and coccidia in the lumen and mucosa of the spiral valve (2/31). In addition, there were found non-infectious lesions in the kidney such as hyaline material accumulation in the renal corpuscles (31/31) and in the epithelium of the renal tubules (31/31). Moreover, there was tubular regeneration in kidney (26/31). Gills showed hyperplasia of the epithelium of the secondary lamellae (24/31), atrophy of primary lamellae (3/31), and epithelial lifting (1/31). We can conclude that because of the mild grade of infestation by parasites in gills and skin, there were non-clinical manifestations of disease in specimens of stingrays. On the other hand, the non-infectious lesions found in the kidneys of all specimens suggest poor quality of the water where the stingrays were captured, and this added to the conditions during the confinement of fish, which are kept the stingrays in the commercial aquariums, could cause subsequently appearance of clinical signs of disease and mortality.

Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten

★ PREMIUM-INHALT
e.Med Interdisziplinär

Mit e.Med Interdisziplinär erhalten Sie Zugang zu allen CME-Fortbildungen und Fachzeitschriften auf SpringerMedizin.de. Zusätzlich können Sie eine Zeitschrift Ihrer Wahl in gedruckter Form beziehen – ohne Aufpreis.

Literatur
Über diesen Artikel

Weitere Artikel der Ausgabe 3/2017

Comparative Clinical Pathology 3/2017 Zur Ausgabe

Neu im Fachgebiet Pathologie

07.03.2019 | Mammakarzinom | CME | Ausgabe 2/2019

Update der S3-Leitlinie Mammakarzinom

Was gibt es Neues für Pathologen?

21.02.2019 | Schwerpunkt: Neuropathologie | Ausgabe 2/2019

Neuropathologie der Medulloblastome und anderer embryonaler Tumoren des ZNS

Präzisierung der Diagnostik durch Integration genetischer Marker

21.02.2019 | Schwerpunkt: Neuropathologie | Ausgabe 2/2019

Integrierte Diagnostik der diffusen astrozytären und oligodendroglialen Gliome

04.02.2019 | Schwerpunkt: Gynäkopathologie | Ausgabe 1/2019 Open Access

Fallstricke und Probleme bei der Differenzialdiagnose epithelialer Ovarialtumoren