Many environmental contaminants disrupt the vertebrate endocrine system. Although they
may be no more sensitive to endocrine-disrupting contaminants (EDCs) than other …

Thyroid hormones (THs) are well-known regulators of development and metabolism in
vertebrates. There is increasing evidence that THs are also involved in gonadal …

Half of the 22 extant crocodilians show evidence of temperature‐dependent sex
determination (TSD). We examine evidence for TSD in 11 species by reviewing reports on …

Although many studies implicate sex steroids in the process of sexual differentiation, the
exact role played by these substances in lower vertebrates, especially teleost fish, is not …

Some investigators have hypothesized that estrogens and other hormonally active agents
found in the environment might be involved in breast cancer increases and sperm count …

Many environmental contaminants alter the reproduction of animals by altering the
development and function of the endocrine system. The ability of environmental …

In the tilapia Oreochromis niloticus, sex is determined genetically (GSD), by temperature
(TSD) or by temperature/genotype interactions. Functional masculinization can be achieved …

Many xenobiotic compounds introduced into the environment by human activity have been
shown to adversely affect wildlife. Reproductive disorders in wildlife include altered fertility …

In many vertebrate species, sex is determined at fertilization of zygotes by sex chromosome
composition, knows as genotypic sex determination (GSD). But in some species—fish …

We examined a critical component of the Charnov-Bull hypothesis of temperature-
dependent sex determination (TSD) by determining the reaction norms of hatchling growth …