Differences in adult male size and age at sexual maturity in the Rio Coy (Mexico) population of Xiphophorus nigrensis (Pisces; Poeciliidae) are controlled by genetic variation at a Y-linked locus.

Behavioral Ecology and Sociobiology, Vol. 59, No. 1 (Nov., 2005), pp. 51-57 (7 pages) Males of the swordtail fish Xiphophorus cortezi are polymorphic for the pigment pattern vertical bars. Previous ...

In many species all over the animal kingdom, males have eye-catching characteristics. Although often impractical, they are beneficial in finding a mate. Scientists have now mapped the genetic bases of ...

RECENTLY it was stated that morphogenetic movements in gastrulation of the viviparous teleost Fundulus heteroclitus occur in a normal fashion in cases in which cytokinesis is prevented by treatment ...