Semen and oocyte collection, sperm cryopreservation and IVF with the threatened North American giant salamander .

Semen of high to moderate quality was collected following the hormonal induction of North American giant salamanders Cryptobranchus alleganiensis . Oocytes from one female yielded the first C. alleganiensis produced while maintained in aquaria under human care and the first externally fertilising salamander produced with cryopreserved spermatozoa and IVF.

EFFICACY OF SUBCUTANEOUS IMPLANTS TO PROVIDE CONTINUOUS PLASMA TERBINAFINE IN HELLBENDERS () FOR FUTURE PROPHYLACTIC USE AGAINST CHYTRIDIOMYCOSIS.

() is an important fungal pathogen present in wild hellbender () populations that appears to cause disease during novel exposure and acute stress. Hellbender repatriation efforts are ongoing to combat declining populations, but mortality by chytridiomycosis (disease from ) after release has been reported. The goal was to determine whether a safe antifungal agent could be administered and provide prolonged plasma concentrations without repeated handling.

GEOGRAPHIC AND INDIVIDUAL DETERMINANTS OF IMPORTANT AMPHIBIAN PATHOGENS IN HELLBENDERS (CRYPTOBRANCHUS ALLEGANIENSIS) IN TENNESSEE AND ARKANSAS, USA.

Wildlife diseases are a major threat for species conservation and there is a growing need to implement disease surveillance programs to protect species of concern. Globally, amphibian populations have suffered considerable losses from disease, particularly from chytrid fungi (Batrachochytrium dendrobatidis [Bd] and Batrachochytrium salamandrivorans [Bsal]) and ranavirus. Hellbenders (Cryptobranchus alleganiensis) are large riverine salamanders historically found throughout several watersheds of the eastern and midwestern US.