Sexual differentiation of reproductive and behavior patterns is largely effected by hormones
produced by the gonads. In many higher vertebrates, an integral part of this process is the …

Many wildlife species may be exposed to biologically active concentrations of endocrine-
disrupting chemicals. There is strong evidence obtained from laboratory studies showing the …

Research into the lives of animals in their natural environments has revealed a rich tapestry
of complex social relationships and previously unsuspected social and mating systems. The …

The precautionary principle is widely seen as fundamental to successful policies for
sustainability. It has been cited in international courts and trade disputes between the USA …

Injection of DDT [1, 1, 1-trichloro-2, 2-bis (p-chlorophenyl) ethane] into gull eggs at
concentrations comparable to those found in contaminated seabird eggs in 1970 induces …

This paper reviews the literature pertaining to the behavior of the Japanese or domestic
quail Coturnix japonica. Details are given of the classification, characteristics, domestication …

The male zebra finch sings, whereas the female does not. This behavioral dimorphism is
correlated with the presence of morphological sex differences within the neural substrate …

Metabolism of [3H] androstenedione was studied in brain tissue homogenates of opossum,
bird, snake, sea turtle, urodele amphibian, teleost, shark, skate, hagfish, and lobster …

About 10 years ago, a sexually differentiated nucleus was identified in the preoptic area
(POA) of the Japanese quail in the course of studies analyzing the dimorphic mechanisms …

The US Congress has passed legislation requiring the US Environmental Protection Agency
(US EPA) to develop, validate, and implement screening tests for identifying potential …