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Ovarian aromatase and estrogens: a pivotal role for gonadal sex differentiation and sex change in fish.
The present review focuses on the roles of estrogens and aromatase (Cyp19a1a), the enzyme needed for their synthesis, in fish gonadal sex differentiation. Based on the recent literature, we extendExpand
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Purification and characterization of vitellin from the mature ovaries of prawn, Penaeus monodon
Abstract 1. 1. A purified vitellin was isolated from the mature ovaries of the prawn ( Penaeus monodon ) after purification with gel filtration, hydroxylapatite, DEAE-Sephacel and polyacrylamide gelExpand
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Cold-stress induced the modulation of catecholamines, cortisol, immunoglobulin M, and leukocyte phagocytosis in tilapia.
The concentrations of norepinephrine in hypothalamus and norepinephrine and epinephrine in head kidney were significantly decreased in treated tilapia (Oreochromis aureus) during the time course ofExpand
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Androgens stimulate sex change in protogynous grouper, Epinephelus coioides: spawning performance in sex-changed males.
We examined the efficacy of androgens (1.0 mg/kg body mass), testosterone (T), 11-ketotestosterone (11-KT), 17alpha-methyltestosterone (MT), testosterone propionate (TP) or androgen mixture (T, MTExpand
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The effects of exogenous androgens on ovarian development and sex change in female orange-spotted protogynous grouper, Epinephelus coioides.
The efficacy of various doses of an androgen mixture, containing testosterone (T), 17α-methyltestosterone (MT), and testosterone propionate (TP) in equal ratios, for induction of sex change inExpand
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wnt4 Is Associated with the Development of Ovarian Tissue in the Protandrous Black Porgy, Acanthopagrus schlegeli1
The protandrous black porgy, Acanthopagrus schlegeli, has a striking life cycle with sex differentiation at the juvenile stage, mono-male development, and male-to-female sex change (with vitellogenicExpand
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Multiple Kisspeptin Receptors in Early Osteichthyans Provide New Insights into the Evolution of This Receptor Family
Deorphanization of GPR54 receptor a decade ago led to the characterization of the kisspeptin receptor (Kissr) in mammals and the discovery of its major role in the brain control of reproduction.Expand
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Sex differentiation and sex change in the protandrous black porgy, Acanthopagrus schlegeli.
Protandrous black porgy fish, Acanthopagrus schlegeli, have a striking life cycle with a male sex differentiation at the juvenile stage and male-to-female sex change at 3 years of age. We hadExpand
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Annual cycle of gonadal histology and steroid profiles in the juvenile males and adult females of the protandrous black porgy, Acanthopagrus schlegeli
Abstract The objectives were to investigate the changes in gonadal histology and plasma levels of gonadal steroids from the bisexual to the male phase in the juvenile male black porgy, AcanthopagrusExpand
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Differential expression and regulation of gonadotropins and their receptors in the Japanese eel, Anguilla japonica.
Eel species have a striking life cycle with a blockade of puberty until the oceanic migration. We report the first molecular data on eel gonadotropin receptors. The partial sequences cloned coveredExpand
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