Skip to main content
main-content

12.12.2016 | Original Contribution | Ausgabe 1/2017

EcoHealth 1/2017

Recent Emergence of a Chytrid Fungal Pathogen in California Cascades Frogs (Rana cascadae)

Zeitschrift:
EcoHealth > Ausgabe 1/2017
Autoren:
Marina E. De León, Vance T. Vredenburg, Jonah Piovia-Scott

Abstract

The pathogenic fungus Batrachochytrium dendrobatidis (Bd) has been associated with global amphibian declines, but it is often difficult to discern the relative importance of Bd as a causal agent in declines that have already occurred. Retrospective analyses of museum specimens have allowed researchers to associate the timing of Bd arrival with the timing of past amphibian declines. Cascades frogs (Rana cascadae) have experienced dramatic declines in northern California, but it is not clear whether the onset of these declines corresponds to the arrival of Bd. We used quantitative real-time PCR assays of samples collected from museum specimens to determine historical Bd prevalence in the northern California range of Cascades frogs. We detected Bd in 13 of 364 (3.5%) Cascades frog specimens collected between 1907 and 2003, with the first positive result from 1978. A Bayesian analysis suggested that Bd arrived in the region between 1973 and 1978, which corresponds well with the first observations of declines in the 1980s.

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 Premium-Inhalten der Fachzeitschriften, inklusive eines Print-Abos.

Literatur
Über diesen Artikel

Weitere Artikel der Ausgabe 1/2017

EcoHealth 1/2017Zur Ausgabe

Cover Essay

Incubus