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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pesca e Aquicultura. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
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Data corrente: |
01/10/2020 |
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Data da última atualização: |
01/10/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
TORATI, L. S.; TAYLOR, J. F.; MESQUITA, P. E. C.; MIGAUD, H. |
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Afiliação: |
LUCAS SIMON TORATI, CNPASA; JOHN F. TAYLOR, UNIVERSITY OF STIRLING, Scotland-UK; PEDRO E. C. MESQUITA, DNOCS; HERVE MIGAUD, UNIVERSITY OF STIRLING, Scotland-UK. |
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Título: |
GnRHa implants and size pairing effects on plasma and cephalic secretion sex steroids in Arapaima gigas. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
General and Comparative Endocrinology, v. 299, 113614, 2020. |
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ISSN: |
0016-6480 |
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DOI: |
https://doi.org/10.1016/j.ygcen.2020.113614 |
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Idioma: |
Inglês |
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Conteúdo: |
Arapaima gigas, one of the world?s largest freshwater fish, is considered an emerging species for aquaculture development in Brazil given its high growth rate and meat quality. However, the lack of reproductive control in captivity has limited the expansion of Arapaima farming. This study aimed to test the effects of hormonal induction using mGnRHa implants and size pairing on broodstock reproduction through the analyses of sex steroids. To do so, broodstock of different sizes (large, small or mixed) were paired and implanted. Plasma and cephalic secretion profiles of testosterone (T), 11-ketotestosterone (11-KT) and 17β-oestradiol (E2) were analysed. Compared to control (non-implanted), implanted broodstock showed a significant increase in plasma 11-KT (large and small males) and T (large and mixed females) post GnRHa implantation. In females, a significant increase in plasma T levels was shown, however, E2 remained unchanged after implantation. Despite the lack of clear spawning induction, this study showed the potency of GnRHa on sex steroid production regardless of pairing groups. Interestingly, significant correlations between blood plasma and cephalic secretion levels of 11-KT in males and T in females were observed, indicating the possible release of pheromones through the cephalic canals of A. gigas. |
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Palavras-Chave: |
Sex steroids. |
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Thesagro: |
Feromônio; Peixe; Pesquisa; Pirarucu; Reprodução. |
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Thesaurus Nal: |
Arapaima gigas; Freshwater fish; Hormonal regulation; Pheromones; Reproduction. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02240naa a2200313 a 4500
001 2125200
005 2020-10-01
008 2020 bl uuuu u00u1 u #d
022 $a0016-6480
024 7 $ahttps://doi.org/10.1016/j.ygcen.2020.113614$2DOI
100 1 $aTORATI, L. S.
245 $aGnRHa implants and size pairing effects on plasma and cephalic secretion sex steroids in Arapaima gigas.$h[electronic resource]
260 $c2020
520 $aArapaima gigas, one of the world?s largest freshwater fish, is considered an emerging species for aquaculture development in Brazil given its high growth rate and meat quality. However, the lack of reproductive control in captivity has limited the expansion of Arapaima farming. This study aimed to test the effects of hormonal induction using mGnRHa implants and size pairing on broodstock reproduction through the analyses of sex steroids. To do so, broodstock of different sizes (large, small or mixed) were paired and implanted. Plasma and cephalic secretion profiles of testosterone (T), 11-ketotestosterone (11-KT) and 17β-oestradiol (E2) were analysed. Compared to control (non-implanted), implanted broodstock showed a significant increase in plasma 11-KT (large and small males) and T (large and mixed females) post GnRHa implantation. In females, a significant increase in plasma T levels was shown, however, E2 remained unchanged after implantation. Despite the lack of clear spawning induction, this study showed the potency of GnRHa on sex steroid production regardless of pairing groups. Interestingly, significant correlations between blood plasma and cephalic secretion levels of 11-KT in males and T in females were observed, indicating the possible release of pheromones through the cephalic canals of A. gigas.
650 $aArapaima gigas
650 $aFreshwater fish
650 $aHormonal regulation
650 $aPheromones
650 $aReproduction
650 $aFeromônio
650 $aPeixe
650 $aPesquisa
650 $aPirarucu
650 $aReprodução
653 $aSex steroids
700 1 $aTAYLOR, J. F.
700 1 $aMESQUITA, P. E. C.
700 1 $aMIGAUD, H.
773 $tGeneral and Comparative Endocrinology$gv. 299, 113614, 2020.
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