bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Дек. 15, 2024

Abstract Chytridiomycosis poses a significant extinction threat to many amphibians, including the critically endangered southern corroboree frog ( Pseudophryne ). Captive breeding programs have become essential maintain populations while effective long-term conservation strategies are developed. Understanding variation in susceptibility chytridiomycosis within this species is exploring potential for selective enhance disease resistance. In study, we conducted large-scale Batrachochytrium dendrobatidis Bd ) exposure experiment involving 972 juvenile P. selected ensure broad genetic representation of species. Three replicate experiments were under uniform conditions, assess individual and compare results across experiments. Significant was observed between experiments, with survival rates ranging from 44-74% influenced notably by zoo which frogs bred. Remarkably, 21-47% exposed remained -negative, suggesting innate Infection intensity correlated positively body condition, one experiment, age size showed inconsistent effects on infection but younger smaller more susceptible had lower survival. Among that became infected, none cleared infection, most progressing terminal stages an average 69 days (ranging 33 97 days). However, few individuals maintained stable loads without displaying clinical signs chytridiomycosis. This phenotypic responses highlights improve outcomes The dataset generated study will be instrumental guiding strengthen efforts

Язык: Английский