Canibalismo em larvas de matrinxã, Brycon cephalus, após imersão dos ovos à diferentes concentrações de triiodotironina (T3)
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/2748 |
Resumo: | The present work evaluated larvae cannibalism of matrinxa, Brycon cephalus, originated from eggs exposed to triiodothyronine, in the period of 36 to 72 hours after hatching. Observed parameters were: weight and length of larvae, stomach content, presence of cannibalism and type of attacks. This study was carried out at Centro de Pesquisa e Gestao de Recursos Pesqueiros Continentais (CEPTA/IBAMA), Pirassununga-SP, in November 2004. Three females were hormonally induced to spawn and pooled oocytes were fertilized and separated into four batches that constituted the treatments: L-1 (control - water); L-2 (0.01 ppm T-3); L-3 (0.05 ppm T-3) and L-4 (0.1 ppm T-3). Eggs were exposed during 15 minutes to water or to solutions containing the different concentrations of T3. Eggs were distributed in 12 conic incubators (60 L), with three replicates per treatment. There was stocked 500 mL of eggs per incubator and hatched larvae were counted. Samples of 30 larvae per treatment were colleted during occurrence of cannibalism (36, 48, 60 and 72 hours post hatching). Predator larvae (with rests of larvae in the stomach) were 50% of the total number of larvae and they presented weight 50% higher compared to that of non predator larvae (without rests of larvae in the stomach) and 9% higher regarding length. Coefficient of variation of weight and length did not differ among treatments, showing similarity in relation to the size. The stomach content revealed that cannibalism occurred in around 50-60 % of larvae, regardless the exposure to the triiodothyronine, and attacks were characterized as head-tail and tail-head attacks. |
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Repositório Institucional da UNESP |
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Canibalismo em larvas de matrinxã, Brycon cephalus, após imersão dos ovos à diferentes concentrações de triiodotironina (T3)Cannibalism of matrinxa, Brycon cephalus, larvae after immersion of eggs to different triiodothyronine (t-3) concentrationLarvicultureBrycon cephalusThyroid hormonesattacksThe present work evaluated larvae cannibalism of matrinxa, Brycon cephalus, originated from eggs exposed to triiodothyronine, in the period of 36 to 72 hours after hatching. Observed parameters were: weight and length of larvae, stomach content, presence of cannibalism and type of attacks. This study was carried out at Centro de Pesquisa e Gestao de Recursos Pesqueiros Continentais (CEPTA/IBAMA), Pirassununga-SP, in November 2004. Three females were hormonally induced to spawn and pooled oocytes were fertilized and separated into four batches that constituted the treatments: L-1 (control - water); L-2 (0.01 ppm T-3); L-3 (0.05 ppm T-3) and L-4 (0.1 ppm T-3). Eggs were exposed during 15 minutes to water or to solutions containing the different concentrations of T3. Eggs were distributed in 12 conic incubators (60 L), with three replicates per treatment. There was stocked 500 mL of eggs per incubator and hatched larvae were counted. Samples of 30 larvae per treatment were colleted during occurrence of cannibalism (36, 48, 60 and 72 hours post hatching). Predator larvae (with rests of larvae in the stomach) were 50% of the total number of larvae and they presented weight 50% higher compared to that of non predator larvae (without rests of larvae in the stomach) and 9% higher regarding length. Coefficient of variation of weight and length did not differ among treatments, showing similarity in relation to the size. The stomach content revealed that cannibalism occurred in around 50-60 % of larvae, regardless the exposure to the triiodothyronine, and attacks were characterized as head-tail and tail-head attacks.APTA SAA, BR-11900970 Registro, SP, BrazilUNESP, Mestrando Prod Anim Zootecnia FCAV, BR-14884900 Jaboticabal, SP, BrazilCEPTA Rodovia Euberto Pereira Godoy, Ctr Pesquisa Gestao Recursos Pesqueiros Continent, BR-13630000 Pirassununga, SP, BrazilCAUNESP, BR-14884900 Jaboticabal, SP, BrazilUNESP, Mestrando Prod Anim Zootecnia FCAV, BR-14884900 Jaboticabal, SP, BrazilCAUNESP, BR-14884900 Jaboticabal, SP, BrazilInst PescaAgência Paulista de Tecnologia dos Agronegócios (APTA)Universidade Estadual Paulista (Unesp)Centro Nacional de Pesquisa e Conservação de Peixes Continentais - CEPTAGervasio Leonardo, Antonio FernandoHoshiba, Marcio Aquio [UNESP]Senhorini, Jose AugustoUrbinati, Elisabeth Criscuolo [UNESP]2014-05-20T13:15:40Z2014-05-20T13:15:40Z2008-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article231-239ftp://ftp.sp.gov.br/ftppesca/34_2_231-239.pdfBoletim do Instituto de Pesca. São Paulo: Inst Pesca, v. 34, n. 2, p. 231-239, 2008.0046-9939http://hdl.handle.net/11449/2748WOS:0002641424000080089991497257336Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporBoletim do Instituto de Pesca0.3480,220info:eu-repo/semantics/openAccess2021-10-22T17:11:41Zoai:repositorio.unesp.br:11449/2748Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T17:11:41Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Canibalismo em larvas de matrinxã, Brycon cephalus, após imersão dos ovos à diferentes concentrações de triiodotironina (T3) Cannibalism of matrinxa, Brycon cephalus, larvae after immersion of eggs to different triiodothyronine (t-3) concentration |
title |
Canibalismo em larvas de matrinxã, Brycon cephalus, após imersão dos ovos à diferentes concentrações de triiodotironina (T3) |
spellingShingle |
Canibalismo em larvas de matrinxã, Brycon cephalus, após imersão dos ovos à diferentes concentrações de triiodotironina (T3) Gervasio Leonardo, Antonio Fernando Larviculture Brycon cephalus Thyroid hormones attacks |
title_short |
Canibalismo em larvas de matrinxã, Brycon cephalus, após imersão dos ovos à diferentes concentrações de triiodotironina (T3) |
title_full |
Canibalismo em larvas de matrinxã, Brycon cephalus, após imersão dos ovos à diferentes concentrações de triiodotironina (T3) |
title_fullStr |
Canibalismo em larvas de matrinxã, Brycon cephalus, após imersão dos ovos à diferentes concentrações de triiodotironina (T3) |
title_full_unstemmed |
Canibalismo em larvas de matrinxã, Brycon cephalus, após imersão dos ovos à diferentes concentrações de triiodotironina (T3) |
title_sort |
Canibalismo em larvas de matrinxã, Brycon cephalus, após imersão dos ovos à diferentes concentrações de triiodotironina (T3) |
author |
Gervasio Leonardo, Antonio Fernando |
author_facet |
Gervasio Leonardo, Antonio Fernando Hoshiba, Marcio Aquio [UNESP] Senhorini, Jose Augusto Urbinati, Elisabeth Criscuolo [UNESP] |
author_role |
author |
author2 |
Hoshiba, Marcio Aquio [UNESP] Senhorini, Jose Augusto Urbinati, Elisabeth Criscuolo [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Agência Paulista de Tecnologia dos Agronegócios (APTA) Universidade Estadual Paulista (Unesp) Centro Nacional de Pesquisa e Conservação de Peixes Continentais - CEPTA |
dc.contributor.author.fl_str_mv |
Gervasio Leonardo, Antonio Fernando Hoshiba, Marcio Aquio [UNESP] Senhorini, Jose Augusto Urbinati, Elisabeth Criscuolo [UNESP] |
dc.subject.por.fl_str_mv |
Larviculture Brycon cephalus Thyroid hormones attacks |
topic |
Larviculture Brycon cephalus Thyroid hormones attacks |
description |
The present work evaluated larvae cannibalism of matrinxa, Brycon cephalus, originated from eggs exposed to triiodothyronine, in the period of 36 to 72 hours after hatching. Observed parameters were: weight and length of larvae, stomach content, presence of cannibalism and type of attacks. This study was carried out at Centro de Pesquisa e Gestao de Recursos Pesqueiros Continentais (CEPTA/IBAMA), Pirassununga-SP, in November 2004. Three females were hormonally induced to spawn and pooled oocytes were fertilized and separated into four batches that constituted the treatments: L-1 (control - water); L-2 (0.01 ppm T-3); L-3 (0.05 ppm T-3) and L-4 (0.1 ppm T-3). Eggs were exposed during 15 minutes to water or to solutions containing the different concentrations of T3. Eggs were distributed in 12 conic incubators (60 L), with three replicates per treatment. There was stocked 500 mL of eggs per incubator and hatched larvae were counted. Samples of 30 larvae per treatment were colleted during occurrence of cannibalism (36, 48, 60 and 72 hours post hatching). Predator larvae (with rests of larvae in the stomach) were 50% of the total number of larvae and they presented weight 50% higher compared to that of non predator larvae (without rests of larvae in the stomach) and 9% higher regarding length. Coefficient of variation of weight and length did not differ among treatments, showing similarity in relation to the size. The stomach content revealed that cannibalism occurred in around 50-60 % of larvae, regardless the exposure to the triiodothyronine, and attacks were characterized as head-tail and tail-head attacks. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-01-01 2014-05-20T13:15:40Z 2014-05-20T13:15:40Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
ftp://ftp.sp.gov.br/ftppesca/34_2_231-239.pdf Boletim do Instituto de Pesca. São Paulo: Inst Pesca, v. 34, n. 2, p. 231-239, 2008. 0046-9939 http://hdl.handle.net/11449/2748 WOS:000264142400008 0089991497257336 |
identifier_str_mv |
ftp://ftp.sp.gov.br/ftppesca/34_2_231-239.pdf Boletim do Instituto de Pesca. São Paulo: Inst Pesca, v. 34, n. 2, p. 231-239, 2008. 0046-9939 WOS:000264142400008 0089991497257336 |
url |
http://hdl.handle.net/11449/2748 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Boletim do Instituto de Pesca 0.348 0,220 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
231-239 |
dc.publisher.none.fl_str_mv |
Inst Pesca |
publisher.none.fl_str_mv |
Inst Pesca |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965245143252992 |