Many, but not all, amphibian populations have been declining on all six continents on which
they live. Although habitat destruction, direct application of toxicants, and introduction of …

Studies of the ontogeny of immunity in a limited number of representative amphibians have
shown that while the immune systems of the larval forms are competent to defend against …

Amphibian populations are declining globally at an alarming rate. Pesticides are among a
number of proposed causes for these declines. Although a sizable database examining …

Amphibians exhibit extreme plasticity in the timing of metamorphosis, and several species
have been shown to respond to water availability, accelerating metamorphosis when their …

Environmentally induced phenotypic plasticity allows developing organisms to respond
adaptively to changes in their habitat. Desert amphibians have evolved traits which allow …

Environments experienced by organisms during early development shape the character and
timing of developmental processes, leading to different probabilities of survival in the …

SYNOPSIS. Amphibians exhibit extreme plasticity in the duration of the larval period.
Probably the most important environmental variable for a tadpole is water availability, and …

Teleosts are the largest and most diverse group of vertebrates, and many species undergo
morphological, physiological, and behavioral transitions,“metamorphoses,” as they progress …

The finding that thyrotropin-releasing hormone does not always act as a thyrotropin (TSH)-
releasing factor in non-mammalian vertebrates has led researchers to believe that another …

Thyroid hormones (THs) are important regulators of growth, development, and homeostasis
of all vertebrates. There are many environmental contaminants that are known to disrupt TH …