Avaliações reprodutivas em três linhagens de tilápias do Nilo (Oreochromis niloticus) cultivadas no Brasil
Autor(a) principal: | |
---|---|
Data de Publicação: | 2012 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFPel - Guaiaca |
Texto Completo: | http://repositorio.ufpel.edu.br/handle/ri/2622 |
Resumo: | The Nile tilapia (Oreochromis niloticus) is one of the most significant species of the current fish farming. All knowledge related to the reproductive behavior of this species is important for defining some selection criteria as well as a better understanding of their reproductive characteristics. Therefore, this research aimed to evaluate the spermatic characteristics of the semen, together with the reproductive acting of females of three different strains of Nile tilapia (Supreme, Premium Aquabel and Chitralada). These evaluations are necessary before establishing genetic breeding program for the species, in order to determine what kind of selection criteria will be used. The collections of data related to the reproducers of both sexes were taken in the Aquabel Pisciculture Station, located in Rolândia/PR. Thirty males were used in the seminal evaluation and seventy five females in the reproductive evaluation of each strain. The reproduction of the females was observed for seven weeks through weekly collections. It was evaluated parameters as volume of eggs/spawing, number and weight of eggs/female, number of eggs/Kg of fish, hatching rates, percentage of females that had not spawned, porcentage of spawning/week, more than two spawning during the seven weeks, average of the spawnings in chronological order and the frequency of spawnings. Of the evaluated strains, the PA presented higher averages for all of the parameters morfometrics and for great majority of the appraised reproductive parameters. As the male influence is as important as for the female in the reproductive process, it was aimed to identify by certain variables, productive and reproductive indexes in the semen that could be selected. Among them it can be mentioned the pH, semen collection, velocity and type of movement, motility, concentration, spermatic viability and integrity of membrane, mitochondrial and DNA. Looking for to identify the line to gather the largest number of desirable characteristics for cultivation, SUP is highlighted by presenting better results for great majority of these parameters. All these variables, for both males and females, are fundamental because in the fertilization process it is necessary that they have good quality. After the choice of these variables it would be possible to identify, among the worked strains, the more appropriate ones for the implantation of a future genetic breeding program. |
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2014-08-20T14:38:49Z2013-07-312014-08-20T14:38:49Z2012-02-27ALMEIDA, Diones Bender. Reproductive evaluations in three strains of Nile tilapias (Oreochromis niloticus) cultivated in Brazil. 2012. 73 f. Tese (Doutorado em Zootecnia) - Universidade Federal de Pelotas, Pelotas, 2012.http://repositorio.ufpel.edu.br/handle/ri/2622The Nile tilapia (Oreochromis niloticus) is one of the most significant species of the current fish farming. All knowledge related to the reproductive behavior of this species is important for defining some selection criteria as well as a better understanding of their reproductive characteristics. Therefore, this research aimed to evaluate the spermatic characteristics of the semen, together with the reproductive acting of females of three different strains of Nile tilapia (Supreme, Premium Aquabel and Chitralada). These evaluations are necessary before establishing genetic breeding program for the species, in order to determine what kind of selection criteria will be used. The collections of data related to the reproducers of both sexes were taken in the Aquabel Pisciculture Station, located in Rolândia/PR. Thirty males were used in the seminal evaluation and seventy five females in the reproductive evaluation of each strain. The reproduction of the females was observed for seven weeks through weekly collections. It was evaluated parameters as volume of eggs/spawing, number and weight of eggs/female, number of eggs/Kg of fish, hatching rates, percentage of females that had not spawned, porcentage of spawning/week, more than two spawning during the seven weeks, average of the spawnings in chronological order and the frequency of spawnings. Of the evaluated strains, the PA presented higher averages for all of the parameters morfometrics and for great majority of the appraised reproductive parameters. As the male influence is as important as for the female in the reproductive process, it was aimed to identify by certain variables, productive and reproductive indexes in the semen that could be selected. Among them it can be mentioned the pH, semen collection, velocity and type of movement, motility, concentration, spermatic viability and integrity of membrane, mitochondrial and DNA. Looking for to identify the line to gather the largest number of desirable characteristics for cultivation, SUP is highlighted by presenting better results for great majority of these parameters. All these variables, for both males and females, are fundamental because in the fertilization process it is necessary that they have good quality. After the choice of these variables it would be possible to identify, among the worked strains, the more appropriate ones for the implantation of a future genetic breeding program.A tilápia do Nilo (Oreochromis niloticus) é uma das espécies mais significativas da piscicultura atual. Todo conhecimento relativo ao comportamento reprodutivo dessa espécie é importante para se definirem determinados critérios de seleção assim como uma melhor compreensão de suas características reprodutivas. Para isso, este projeto de pesquisa teve como objetivo avaliar as características espermáticas do sêmen, juntamente com o desempenho reprodutivo de fêmeas de três diferentes linhagens de tilápias do Nilo (Supreme, Premium Aquabel e Chitralada). Essas avaliações são necessárias antes de se estabelecer um programa de melhoramento genético para essa espécie, a fim de determinar que tipos de critérios de seleção serão utilizados. As coletas de dados relacionados aos reprodutores de ambos os sexos foram realizadas na Estação de Piscicultura Aquabel, localizada no município de Rolândia/PR. Foram utilizados 30 machos na avaliação seminal e 75 fêmeas na avaliação reprodutiva de cada linhagem. A reprodução das fêmeas foi realizada durante sete semanas através de coletas semanais, onde se avaliou parâmetros como volume de ovos/desova, número e peso de ovos/fêmea, número de ovos/Kg de peixe, taxa de eclosão, porcentagem de fêmeas que não desovaram, porcentagem de desovas/semana, mais de duas desovas durante as sete semanas, média das desovas em ordem cronológica e frequência de desovas. Das linhagens avaliadas a PA apresentou médias consideradas superiores para todos os parâmetros morfométricos e para grande maioria dos parâmetros reprodutivos avaliados. Como a influência do macho é tão importante quanto à da fêmea no processo reprodutivo, buscou-se identificar através de determinadas variáveis, índices produtivos e reprodutivos no sêmen, que pudessem ser selecionados. Dentre eles podemos citar o pH, coloração, velocidade e tipo de movimentação, motilidade, concentração, viabilidade espermática e integridades de membrana, mitocôndria e DNA. Buscando identificar a linhagem que reunisse o maior número de características desejáveis ao cultivo, a SUP se destacou por apresentar melhores resultados para grande maioria desses parâmetros. Todas essas variáveis, tanto nos machos como nas fêmeas, são fundamentais de serem estudadas porque no processo de fertilização é necessário que as mesmas apresentem boa qualidade. Somente após a escolha dessas variáveis é que podemos identificar, dentre as linhagens trabalhadas, aquela (s) mais adequada (s) para a implantação de um futuro programa de melhoramento genético.application/pdfporUniversidade Federal de PelotasPrograma de Pós-Graduação em ZootecniaUFPelBRFaculdade de Agronomia Eliseu MacielReproduçãoGenéticaSêmenDesovaLarviculturaAquiculturaReproductionGeneticsSemenSpawingLarvicultureAquacultureCNPQ::CIENCIAS AGRARIAS::ZOOTECNIAAvaliações reprodutivas em três linhagens de tilápias do Nilo (Oreochromis niloticus) cultivadas no BrasilReproductive evaluations in three strains of Nile tilapias (Oreochromis niloticus) cultivated in Brazilinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesishttp://lattes.cnpq.br/6909841238987206http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4761853J6Moreira, Heden Luiz MarquesAlmeida, Diones Benderinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFPel - Guaiacainstname:Universidade Federal de Pelotas (UFPEL)instacron:UFPELORIGINALtese_diones_bender_almeida.pdfapplication/pdf702296http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/2622/1/tese_diones_bender_almeida.pdf79cdf77bf0f5d2b12aa8fc733442f59dMD51open accessTEXTtese_diones_bender_almeida.pdf.txttese_diones_bender_almeida.pdf.txtExtracted Texttext/plain131883http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/2622/2/tese_diones_bender_almeida.pdf.txte72fa084c65ab2656d8c7d7f3a2dfd12MD52open accessTHUMBNAILtese_diones_bender_almeida.pdf.jpgtese_diones_bender_almeida.pdf.jpgGenerated Thumbnailimage/jpeg1392http://guaiaca.ufpel.edu.br/xmlui/bitstream/123456789/2622/3/tese_diones_bender_almeida.pdf.jpg255b8cad0ffb984ca53aca516a5072e9MD53open access123456789/26222019-08-20 11:27:28.653open accessoai:guaiaca.ufpel.edu.br:123456789/2622Repositório InstitucionalPUBhttp://repositorio.ufpel.edu.br/oai/requestrippel@ufpel.edu.br || repositorio@ufpel.edu.br || aline.batista@ufpel.edu.bropendoar:2019-08-20T14:27:28Repositório Institucional da UFPel - Guaiaca - Universidade Federal de Pelotas (UFPEL)false |
dc.title.por.fl_str_mv |
Avaliações reprodutivas em três linhagens de tilápias do Nilo (Oreochromis niloticus) cultivadas no Brasil |
dc.title.alternative.eng.fl_str_mv |
Reproductive evaluations in three strains of Nile tilapias (Oreochromis niloticus) cultivated in Brazil |
title |
Avaliações reprodutivas em três linhagens de tilápias do Nilo (Oreochromis niloticus) cultivadas no Brasil |
spellingShingle |
Avaliações reprodutivas em três linhagens de tilápias do Nilo (Oreochromis niloticus) cultivadas no Brasil Almeida, Diones Bender Reprodução Genética Sêmen Desova Larvicultura Aquicultura Reproduction Genetics Semen Spawing Larviculture Aquaculture CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
title_short |
Avaliações reprodutivas em três linhagens de tilápias do Nilo (Oreochromis niloticus) cultivadas no Brasil |
title_full |
Avaliações reprodutivas em três linhagens de tilápias do Nilo (Oreochromis niloticus) cultivadas no Brasil |
title_fullStr |
Avaliações reprodutivas em três linhagens de tilápias do Nilo (Oreochromis niloticus) cultivadas no Brasil |
title_full_unstemmed |
Avaliações reprodutivas em três linhagens de tilápias do Nilo (Oreochromis niloticus) cultivadas no Brasil |
title_sort |
Avaliações reprodutivas em três linhagens de tilápias do Nilo (Oreochromis niloticus) cultivadas no Brasil |
author |
Almeida, Diones Bender |
author_facet |
Almeida, Diones Bender |
author_role |
author |
dc.contributor.authorLattes.por.fl_str_mv |
http://lattes.cnpq.br/6909841238987206 |
dc.contributor.advisorLattes.por.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4761853J6 |
dc.contributor.advisor1.fl_str_mv |
Moreira, Heden Luiz Marques |
dc.contributor.author.fl_str_mv |
Almeida, Diones Bender |
contributor_str_mv |
Moreira, Heden Luiz Marques |
dc.subject.por.fl_str_mv |
Reprodução Genética Sêmen Desova Larvicultura Aquicultura |
topic |
Reprodução Genética Sêmen Desova Larvicultura Aquicultura Reproduction Genetics Semen Spawing Larviculture Aquaculture CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
dc.subject.eng.fl_str_mv |
Reproduction Genetics Semen Spawing Larviculture Aquaculture |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
description |
The Nile tilapia (Oreochromis niloticus) is one of the most significant species of the current fish farming. All knowledge related to the reproductive behavior of this species is important for defining some selection criteria as well as a better understanding of their reproductive characteristics. Therefore, this research aimed to evaluate the spermatic characteristics of the semen, together with the reproductive acting of females of three different strains of Nile tilapia (Supreme, Premium Aquabel and Chitralada). These evaluations are necessary before establishing genetic breeding program for the species, in order to determine what kind of selection criteria will be used. The collections of data related to the reproducers of both sexes were taken in the Aquabel Pisciculture Station, located in Rolândia/PR. Thirty males were used in the seminal evaluation and seventy five females in the reproductive evaluation of each strain. The reproduction of the females was observed for seven weeks through weekly collections. It was evaluated parameters as volume of eggs/spawing, number and weight of eggs/female, number of eggs/Kg of fish, hatching rates, percentage of females that had not spawned, porcentage of spawning/week, more than two spawning during the seven weeks, average of the spawnings in chronological order and the frequency of spawnings. Of the evaluated strains, the PA presented higher averages for all of the parameters morfometrics and for great majority of the appraised reproductive parameters. As the male influence is as important as for the female in the reproductive process, it was aimed to identify by certain variables, productive and reproductive indexes in the semen that could be selected. Among them it can be mentioned the pH, semen collection, velocity and type of movement, motility, concentration, spermatic viability and integrity of membrane, mitochondrial and DNA. Looking for to identify the line to gather the largest number of desirable characteristics for cultivation, SUP is highlighted by presenting better results for great majority of these parameters. All these variables, for both males and females, are fundamental because in the fertilization process it is necessary that they have good quality. After the choice of these variables it would be possible to identify, among the worked strains, the more appropriate ones for the implantation of a future genetic breeding program. |
publishDate |
2012 |
dc.date.issued.fl_str_mv |
2012-02-27 |
dc.date.available.fl_str_mv |
2013-07-31 2014-08-20T14:38:49Z |
dc.date.accessioned.fl_str_mv |
2014-08-20T14:38:49Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
ALMEIDA, Diones Bender. Reproductive evaluations in three strains of Nile tilapias (Oreochromis niloticus) cultivated in Brazil. 2012. 73 f. Tese (Doutorado em Zootecnia) - Universidade Federal de Pelotas, Pelotas, 2012. |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufpel.edu.br/handle/ri/2622 |
identifier_str_mv |
ALMEIDA, Diones Bender. Reproductive evaluations in three strains of Nile tilapias (Oreochromis niloticus) cultivated in Brazil. 2012. 73 f. Tese (Doutorado em Zootecnia) - Universidade Federal de Pelotas, Pelotas, 2012. |
url |
http://repositorio.ufpel.edu.br/handle/ri/2622 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Pelotas |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Zootecnia |
dc.publisher.initials.fl_str_mv |
UFPel |
dc.publisher.country.fl_str_mv |
BR |
dc.publisher.department.fl_str_mv |
Faculdade de Agronomia Eliseu Maciel |
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Universidade Federal de Pelotas |
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UFPEL |
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UFPEL |
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