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Melanin-concentrating hormone (MCH) is a neuropeptide generated in neurons originating in the hypothalamus, from which axons project to the entire brain and neurohypophysis in fish. MCH has both central and peripheral roles such as food intake and body color change. Here we cloned two MCH...
The role of thyroid hormone (TH) and its receptors (TRs) in the regulation of body growth and muscle accretion is well established in mammals and birds, whereas the involvement of THs and TRs in fish growth, especially during the muscle accretion period of juvenile-adult transition, is unknown....
Previous studies of follicle maturation in temperate basses showed that insulin-like growth factor (IGF)-I and -II can induce meiotic resumption, indicated by germinal vesicle breakdown (GVBD), and oocyte maturational competence (OMC), the ability to respond to the maturation-inducing hormone...
Sexual dimorphism in lacrimal gland (LG) gene expression is believed to be due to direct inductive effects of androgens mediated by androgen receptors (AR) but hypophysectomy dramatically curtails these inductive effects. Since, functional estrogen receptors (ER) could not be detected in LG,...
Several studies have shown that the transition from egg laying to incubation behavior in birds is associated with changes in plasma levels of prolactin and steroid hormones. However, any effect of the tactile and visual input provided by eggs at initiating these hormonal changes has not been...
A cDNA encoding the Pacific oyster, Crassostrea gigas , estrogen receptor (cgER) was cloned using degenerate PCR primers. The open reading frame predicted 485 amino acid residues. Comparisons of the amino acid sequence of cgER with other mollusk ERs show high similarities of the C domain...
To gain insight into the possible regulatory role of the growth hormone (GH)-insulin-like growth factor I (IGF-I) system in flatfish metamorphosis, body GHR gene expression as well as IGF-I protein content was quantified in larval Atlantic halibut throughout metamorphosis (developmental stages...
Immunity is believed to share limited resources with other physiological functions and this may partly account for the fitness costs of reproduction. Previous studies have shown that the acquired immunity of female common eiders ( Somateria mollissima ) is suppressed during the incubation fast....
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