Comparação de respotas funcionais de duas espécie de peixes píscivoras
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFERSA |
Texto Completo: | https://repositorio.ufersa.edu.br/handle/tede/573 |
Resumo: | Species of the Cichla genus have been introduced in a variety of tropical aquatic ecosystems, thus resulting in a marked reduction in diversity and population size of native fish assemblies due to their predatory behavior. Despite Cichla induced impact the mechanisms by which the species are still poorly known. In this study we compared the functional response of an alien predator fish C. kelberi and a native predator H. aff. malabaricus. More specifically, the tested hypotheses were: 1) both predator species have functional responses of type II on different prey species, and 2) the functional responses of the alien predator were higher for all preys when compared to the native predator. The predators were acclimated in tanks of 500 liters and fed twice daily with preys O. niloticus and L.vannamei for 3 days, 4 preys in the morning and 4 in the afternoon. Hunger levels were standardized after a fast of 48 hours. After the pre-experimental phase an exemplar of C. kelberi was randomly introduced in each tank of O. niloticus with initial prey densities of 2, 4, 8, 16, 25 and 40, and for L. vannamei 2, 4, 8, 16, 32 and 64 (n = 4 per density). After 24 hours the number of prey consumed was counted. This method was repeated for the native predator H. aff. malabaricus. Totaling 48 experimental units. The functional response C. kelberi was greater than or equivalent to the native predator H. aff. malabaricus. There was no difference in consumption between the two species at low densities. The attack rate did not differ between the two predators and handling time was driven by C. kelberi for the species O. niloticus. However, the two species showed functional response type II, thus corroborating with the comparative functional response method to predict the impact on native communities. Functional Comparative Response is a quick and reliable method to predict the ecological impacts of invasive species |
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Fernandes, RodrigoMachado, Milena Wachlevskihttp://lattes.cnpq.br/0723456401948016Novaes, José Luís Costahttp://lattes.cnpq.br/259140609703206002125351374http://lattes.cnpq.br/8553767898477286http://lattes.cnpq.br/9738639194108996Carvalho, Thiago Lima de Carvalho2017-03-20T15:42:35Z2016-02-22CARVALHO, Thiago Lima de. Comparação de respotas funcionais de duas espécie de peixes píscivoras. 2016. 32 f. Dissertação (Mestrado) - Curso de Pós-graduação em Ciência Animal, Universidade Federal Rural do Semi-Árido, Mossoró, 2016.https://repositorio.ufersa.edu.br/handle/tede/573Species of the Cichla genus have been introduced in a variety of tropical aquatic ecosystems, thus resulting in a marked reduction in diversity and population size of native fish assemblies due to their predatory behavior. Despite Cichla induced impact the mechanisms by which the species are still poorly known. In this study we compared the functional response of an alien predator fish C. kelberi and a native predator H. aff. malabaricus. More specifically, the tested hypotheses were: 1) both predator species have functional responses of type II on different prey species, and 2) the functional responses of the alien predator were higher for all preys when compared to the native predator. The predators were acclimated in tanks of 500 liters and fed twice daily with preys O. niloticus and L.vannamei for 3 days, 4 preys in the morning and 4 in the afternoon. Hunger levels were standardized after a fast of 48 hours. After the pre-experimental phase an exemplar of C. kelberi was randomly introduced in each tank of O. niloticus with initial prey densities of 2, 4, 8, 16, 25 and 40, and for L. vannamei 2, 4, 8, 16, 32 and 64 (n = 4 per density). After 24 hours the number of prey consumed was counted. This method was repeated for the native predator H. aff. malabaricus. Totaling 48 experimental units. The functional response C. kelberi was greater than or equivalent to the native predator H. aff. malabaricus. There was no difference in consumption between the two species at low densities. The attack rate did not differ between the two predators and handling time was driven by C. kelberi for the species O. niloticus. However, the two species showed functional response type II, thus corroborating with the comparative functional response method to predict the impact on native communities. Functional Comparative Response is a quick and reliable method to predict the ecological impacts of invasive speciesEspécies do gênero Cichla têm sido introduzidas em vários ecossistemas aquáticos tropicais, resultando em uma redução na diversidade e tamanho populacional de assembleias de peixes nativos, devido a sua atuação predatória. Os mecanismos de predação pelos quais o tucunaré (Cichla kelberi) permanece pouco conhecido. Nesse estudo foram comparadas as resposta funcionais de um peixe predador alienígena C. kelberi e de um predador nativo Hoplias aff. malabaricus. Especificamente, foram testadas as hipóteses: 1) que ambas as espécies de predador apresentam respostas funcionais do Tipo II, na qual a espécie preda em baixa densidade, sobre diferentes espécies de presas, e que 2) as respostas funcionais do predador alienígena foram maiores para todas as presas, quando comparados com o predador nativo. Os predadores foram aclimatados nos tanques de 500 litros e alimentados duas vezes ao dia com alevinos de Oreochromis niloticus e Litopenaeus vannamei durante 3 dias, 4 presas pela manhã e 4 presas a tarde. Os níveis de fome foram padronizados depois de um jejum de 48 horas. Foi introduzido aleatoriamente um exemplar de C. kelberi em cada tanque de O. niloticus com densidades iniciais de presas de 2, 4, 8, 16, 25 e 40 e para L. vannamei 2, 4, 8, 16, 32 e 64 (n = 4 por densidade), e depois de 24 horas contabilizado o número de presas consumidas. Este método foi repetido para o predador nativo H. aff. malabaricus. Totalizando 48 unidades experimentais. A resposta funcional de C, kelberi foi maior ou equivalente a do predador nativo H. aff. malabaricus. Não houve diferença no consumo entre as duas espécies nas baixas densidades. A taxa de ataque não diferenciou entre os dois predadores e o tempo de manipulação foi impulsionado por C, kelberi para a espécie O. niloticus. As duas espécies apresentaram resposta funcional do tipo II corroborando com o método de resposta funcional comparativa de prever os impactos nas comunidades nativas. Respostas funcionais é um método rápido e confiável para previsão de impactos ecológicos de espécies invasorasCoordenação de Aperfeiçoamento de Pessoal de Nível Superior2017-03-20application/pdfhttp://repositorio.ufersa.edu.br/retrieve/1305/ThiagoLC_DISSERT.pdf.jpgporUniversidade Federal Rural do Semi-ÁridoPrograma de Pós-Graduação em Ciência AnimalUFERSABrasilCC-BY-SAinfo:eu-repo/semantics/openAccessTempo de manipulaçãoTaxa de ataquebioinvasãoHandlling timeAttack rateBioinvasionCNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIAComparação de respotas funcionais de duas espécie de peixes píscivorasComparison of functional responses of fish species of two piscivoresinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisreponame:Biblioteca Digital de Teses e Dissertações da UFERSAinstname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSAORIGINALThiagoLC_DISSERT.pdfThiagoLC_DISSERT.pdfapplication/pdf1446311https://repositorio.ufersa.edu.br//bitstream/tede/573/1/ThiagoLC_DISSERT.pdff9df761557b8cd9c1f4395f10697bdbdMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-82165https://repositorio.ufersa.edu.br//bitstream/tede/573/2/license.txtbd3efa91386c1718a7f26a329fdcb468MD52TEXTThiagoLC_DISSERT.pdf.txtThiagoLC_DISSERT.pdf.txtExtracted Texttext/plain48189https://repositorio.ufersa.edu.br//bitstream/tede/573/3/ThiagoLC_DISSERT.pdf.txt4774f76ab81ad412492233f639753735MD53THUMBNAILThiagoLC_DISSERT.pdf.jpgThiagoLC_DISSERT.pdf.jpgGenerated Thumbnailimage/jpeg3353https://repositorio.ufersa.edu.br//bitstream/tede/573/4/ThiagoLC_DISSERT.pdf.jpgabb1c3448866026b5e2f3d26b97bf1efMD54tede/5732022-07-11 17:53:59.295oai:repositorio.ufersa.edu.br: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Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufersa.edu.br/PUBhttp://bdtd.ufersa.edu.br/oai/requestdirecaosisbi@ufersa.edu.br|| direcaosisbi@ufersa.edu.bropendoar:2022-07-11T20:53:59Biblioteca Digital de Teses e Dissertações da UFERSA - Universidade Federal Rural do Semi-Árido (UFERSA)false |
dc.title.por.fl_str_mv |
Comparação de respotas funcionais de duas espécie de peixes píscivoras |
dc.title.alternative.por.fl_str_mv |
Comparison of functional responses of fish species of two piscivores |
title |
Comparação de respotas funcionais de duas espécie de peixes píscivoras |
spellingShingle |
Comparação de respotas funcionais de duas espécie de peixes píscivoras Carvalho, Thiago Lima de Carvalho Tempo de manipulação Taxa de ataque bioinvasão Handlling time Attack rate Bioinvasion CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
title_short |
Comparação de respotas funcionais de duas espécie de peixes píscivoras |
title_full |
Comparação de respotas funcionais de duas espécie de peixes píscivoras |
title_fullStr |
Comparação de respotas funcionais de duas espécie de peixes píscivoras |
title_full_unstemmed |
Comparação de respotas funcionais de duas espécie de peixes píscivoras |
title_sort |
Comparação de respotas funcionais de duas espécie de peixes píscivoras |
author |
Carvalho, Thiago Lima de Carvalho |
author_facet |
Carvalho, Thiago Lima de Carvalho |
author_role |
author |
dc.contributor.authorID.por.fl_str_mv |
02125351374 |
dc.contributor.authorLattes.por.fl_str_mv |
http://lattes.cnpq.br/8553767898477286 |
dc.contributor.advisorLattes.por.fl_str_mv |
http://lattes.cnpq.br/9738639194108996 |
dc.contributor.advisor1.fl_str_mv |
Fernandes, Rodrigo |
dc.contributor.referee1.fl_str_mv |
Machado, Milena Wachlevski |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/0723456401948016 |
dc.contributor.referee2.fl_str_mv |
Novaes, José Luís Costa |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/2591406097032060 |
dc.contributor.author.fl_str_mv |
Carvalho, Thiago Lima de Carvalho |
contributor_str_mv |
Fernandes, Rodrigo Machado, Milena Wachlevski Novaes, José Luís Costa |
dc.subject.por.fl_str_mv |
Tempo de manipulação Taxa de ataque bioinvasão Handlling time Attack rate Bioinvasion |
topic |
Tempo de manipulação Taxa de ataque bioinvasão Handlling time Attack rate Bioinvasion CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
description |
Species of the Cichla genus have been introduced in a variety of tropical aquatic ecosystems, thus resulting in a marked reduction in diversity and population size of native fish assemblies due to their predatory behavior. Despite Cichla induced impact the mechanisms by which the species are still poorly known. In this study we compared the functional response of an alien predator fish C. kelberi and a native predator H. aff. malabaricus. More specifically, the tested hypotheses were: 1) both predator species have functional responses of type II on different prey species, and 2) the functional responses of the alien predator were higher for all preys when compared to the native predator. The predators were acclimated in tanks of 500 liters and fed twice daily with preys O. niloticus and L.vannamei for 3 days, 4 preys in the morning and 4 in the afternoon. Hunger levels were standardized after a fast of 48 hours. After the pre-experimental phase an exemplar of C. kelberi was randomly introduced in each tank of O. niloticus with initial prey densities of 2, 4, 8, 16, 25 and 40, and for L. vannamei 2, 4, 8, 16, 32 and 64 (n = 4 per density). After 24 hours the number of prey consumed was counted. This method was repeated for the native predator H. aff. malabaricus. Totaling 48 experimental units. The functional response C. kelberi was greater than or equivalent to the native predator H. aff. malabaricus. There was no difference in consumption between the two species at low densities. The attack rate did not differ between the two predators and handling time was driven by C. kelberi for the species O. niloticus. However, the two species showed functional response type II, thus corroborating with the comparative functional response method to predict the impact on native communities. Functional Comparative Response is a quick and reliable method to predict the ecological impacts of invasive species |
publishDate |
2016 |
dc.date.issued.fl_str_mv |
2016-02-22 |
dc.date.accessioned.fl_str_mv |
2017-03-20T15:42:35Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
CARVALHO, Thiago Lima de. Comparação de respotas funcionais de duas espécie de peixes píscivoras. 2016. 32 f. Dissertação (Mestrado) - Curso de Pós-graduação em Ciência Animal, Universidade Federal Rural do Semi-Árido, Mossoró, 2016. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufersa.edu.br/handle/tede/573 |
identifier_str_mv |
CARVALHO, Thiago Lima de. Comparação de respotas funcionais de duas espécie de peixes píscivoras. 2016. 32 f. Dissertação (Mestrado) - Curso de Pós-graduação em Ciência Animal, Universidade Federal Rural do Semi-Árido, Mossoró, 2016. |
url |
https://repositorio.ufersa.edu.br/handle/tede/573 |
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por |
language |
por |
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CC-BY-SA info:eu-repo/semantics/openAccess |
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CC-BY-SA |
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openAccess |
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application/pdf |
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Universidade Federal Rural do Semi-Árido |
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Programa de Pós-Graduação em Ciência Animal |
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UFERSA |
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Brasil |
publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
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