Immunocytochemical localization of gonadotropins during the development of XX and XY Nile tilapia
Gonadal development and steroidogenesis in teleosts is regulated by two gonadotropic hormones; luteinizing hormone (LH) and follicle-stimulating hormone (FSH). Earlier studies in tilapia have shown that FSH-beta and LH-beta appear by 14 days after hatching (dah), results from the current study corro...
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| Veröffentlicht in: | Fish physiology and biochemistry 2005-04, Vol.31 (2-3), p.177-181 |
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| container_title | Fish physiology and biochemistry |
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| creator | Sakai, F Swapna, I Sudhakumari, C C Ganesh, M V N L Kagawa, H Kobayashi, T Fan, H Nagahama, Y Senthilkumaran, B |
| description | Gonadal development and steroidogenesis in teleosts is regulated by two gonadotropic hormones; luteinizing hormone (LH) and follicle-stimulating hormone (FSH). Earlier studies in tilapia have shown that FSH-beta and LH-beta appear by 14 days after hatching (dah), results from the current study corroborate with these previous reports in tilapia. Here we demonstrate the appearance of LH in pituitary between 14 and 20 dah. In addition to this the present study primarily focuses on any possible differences in appearance of LH-beta and FSH-beta immunoreactivity between XX and XY population of Nile tilapia. LH immunoreactivity was found to be lower in pituitary of XX fish when compared to XY fish. The development of FSH-beta immunoreactivity in pituitary of the Nile tilapia is also presented. Overall, it remains to be established what significance these findings on the appearance of gonadotropins hold for sex differentiation in tilapia. |
| doi_str_mv | 10.1007/s10695-006-0021-6 |
| format | Article |
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Earlier studies in tilapia have shown that FSH-beta and LH-beta appear by 14 days after hatching (dah), results from the current study corroborate with these previous reports in tilapia. Here we demonstrate the appearance of LH in pituitary between 14 and 20 dah. In addition to this the present study primarily focuses on any possible differences in appearance of LH-beta and FSH-beta immunoreactivity between XX and XY population of Nile tilapia. LH immunoreactivity was found to be lower in pituitary of XX fish when compared to XY fish. The development of FSH-beta immunoreactivity in pituitary of the Nile tilapia is also presented. Overall, it remains to be established what significance these findings on the appearance of gonadotropins hold for sex differentiation in tilapia.</description><identifier>ISSN: 0920-1742</identifier><identifier>EISSN: 1573-5168</identifier><identifier>DOI: 10.1007/s10695-006-0021-6</identifier><identifier>PMID: 20035455</identifier><language>eng</language><publisher>Netherlands: Springer Nature B.V</publisher><subject>Aquaculture ; Brackish ; Fish ; Hatching ; Hormones ; Oreochromis niloticus ; Teleostei ; Tilapia</subject><ispartof>Fish physiology and biochemistry, 2005-04, Vol.31 (2-3), p.177-181</ispartof><rights>Springer Science+Business Media B.V. 2006</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c456t-6898578be54d98eebef1f4588bb8be33961e6a71f500261bfe8e34afb5e7af8f3</citedby><cites>FETCH-LOGICAL-c456t-6898578be54d98eebef1f4588bb8be33961e6a71f500261bfe8e34afb5e7af8f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20035455$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Sakai, F</creatorcontrib><creatorcontrib>Swapna, I</creatorcontrib><creatorcontrib>Sudhakumari, C C</creatorcontrib><creatorcontrib>Ganesh, M V N L</creatorcontrib><creatorcontrib>Kagawa, H</creatorcontrib><creatorcontrib>Kobayashi, T</creatorcontrib><creatorcontrib>Fan, H</creatorcontrib><creatorcontrib>Nagahama, Y</creatorcontrib><creatorcontrib>Senthilkumaran, B</creatorcontrib><title>Immunocytochemical localization of gonadotropins during the development of XX and XY Nile tilapia</title><title>Fish physiology and biochemistry</title><addtitle>Fish Physiol Biochem</addtitle><description>Gonadal development and steroidogenesis in teleosts is regulated by two gonadotropic hormones; luteinizing hormone (LH) and follicle-stimulating hormone (FSH). Earlier studies in tilapia have shown that FSH-beta and LH-beta appear by 14 days after hatching (dah), results from the current study corroborate with these previous reports in tilapia. Here we demonstrate the appearance of LH in pituitary between 14 and 20 dah. In addition to this the present study primarily focuses on any possible differences in appearance of LH-beta and FSH-beta immunoreactivity between XX and XY population of Nile tilapia. LH immunoreactivity was found to be lower in pituitary of XX fish when compared to XY fish. The development of FSH-beta immunoreactivity in pituitary of the Nile tilapia is also presented. 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| language | eng |
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| source | SpringerLink Journals |
| subjects | Aquaculture Brackish Fish Hatching Hormones Oreochromis niloticus Teleostei Tilapia |
| title | Immunocytochemical localization of gonadotropins during the development of XX and XY Nile tilapia |
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