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B chromosomes (Bs) are supernumerary elements found in many taxonomic groups. Most B chromosomes are rich in heterochromatin and… Expand Abstract Astatotilapia burtoni is a member of the “modern haplochromines,” the most species‐rich lineage within the family of… Expand Abstract During the early stages of adaptive radiation, populations diverge in life history traits such as egg size and growth… Expand Neuropeptides modulate many aspects of behavior and physiology in a broad range of animals. Arginine vasotocin (AVT) is… Expand The roles of estrogen and androgens in male social behavior are well studied, but little is known about how these hormones… Expand Sexual reproduction in all animals depends on effective communication between signalers and receivers. Many fish species… Expand The effect of estrogen on gonadal sex differentiation in Astatotilapia latifasciata was examined by daily oral administration of… Expand In vertebrates, circulating androgen levels are regulated by the hypothalamic-pituitary-gonadal (HPG) axis through which the… Expand The neuroanatomic connections of the inferior lobe and the lateral torus of the percomorph Hemichromis lifalili were investigated… Expand