10 research outputs found
Genomic Approaches to Study Genetic and Environmental Influences on Fish Sex Determination and Differentiation
Full text link17,20β-P and cortisol are the main in vitro metabolites of 17-hydroxy-progesterone produced by spermiating testes of Micropogonias furnieri (Desmarest, 1823) (Perciformes: Sciaenidae)
No full textIntravital Sex Identification of Adult Sterlets Acipenser ruthenus (Acipenseridae) Based on the Morphological Structure of Dorsal Scutes
No full textSexually dimorphic gene expressions in eels: useful markers for early sex assessment in a conservation context
No full textMeta-Analysis of Microarray Data of Rainbow Trout Fry Gonad Differentiation Modulated by Ethynylestradiol
No full textEstrogen exposure overrides the masculinizing effect of elevated temperature by a downregulation of the key genes implicated in sexual differentiation in a fish with mixed genetic and environmental sex determination
No full textAdaptation of a Bioinformatics Microarray Analysis Workflow for a Toxicogenomic Study in Rainbow Trout
No full textTranscriptomic analyses reveal novel genes with sexually dimorphic expression in Takifugu rubripes brain during gonadal sex differentiation
No full textNot Available
No full textNot AvailableTeleost exhibits extreme plasticity in its sexuality, retaining the conserved vertebrate neuroendocrine regulation of reproduction. The sex hormonal milieu is a major driver of sexual development in an organism. In teleosts, 17β-estradiol (E2) and 11-ketotestosterone (11-KT) act as natural inducers of ovarian and testicular differentiation, respectively, and alteration in the sex steroid milieu can reverse their sex. Estrogen also exerts pleiotropic effects on other physiological processes, in addition to its reproductive role. Different research strategies have indicated that estradiol, from either peripheral or central origin, exerts nucleus- and membrane-initiated signalling mechanisms which cooperate with other signalling pathways to modulate biologic responses of both reproductive and non-reproductive nature. Sex steroids also maintain a self-regulating feedback loop along the brain-pituitary-gonadotropic axis for a stage- and sex-specific steroidogenesis and reproductive behavior, though the underlying molecular mechanisms remain elusive. Understanding the estrogen signalling will enhance our understanding of fish reproduction and its regulation and will provide opportunities for the development of new strategies useful to aquaculture.Not Availabl
