Body mass is a fundamental feature of animal physiology. Although sperm whales (Physeter
macrocephalus) are the largest toothed predators on earth, body mass is seldom included in …

A variety of proactive conservation initiatives are being implemented in an attempt to arrest
the alarming rate of global amphibian decline. In situ conservation strategies aim to …

An understanding of how seasonality impacts amphibian's sperm quality is crucial for the
development and implementation of assisted reproductive technologies for threatened …

For amphibian species that display external fertilization in an aquatic environment,
hypoosmotic shock to sperm cells can quickly result in damage to cellular structure and …

Abstract The Southern Rocky Mountain boreal toad (Anaxyrus boreas boreas) has
disappeared from much of its range in the alpine regions of Central and Western North …

Asynchrony of gamete release is problematic in amphibian captive breeding programs but
can be overcome by short-term storage of spermatozoa. Hormonally induced sperm from the …

Simple Summary Recurrent successful breeding of the critically endangered Vanishing
Rainfrog (Craugastor evanesco) in captivity has been challenging. Therefore, the objective …

Context With global amphibian biodiversity rapidly declining, improving reproductive
technology outcomes has become essential. Captive breeding programs have struggled …

As sperm cryopreservation and other assisted reproductive technologies (ARTs) advance in
common amphibian species, focus on applying non-lethal sperm collection methods to the …

Late vitellogenic oocytes in the common frog, Rana temporaria, represent a promising
model for studying the behavior of meiotic chromosomes, because at the diplotene stage of …