Resumo

Biologia alimentar de Anableps anableps no Rio Maracanã, Pará (Brasil)

The genus Anableps comprises three species: A. dowi which is found in the Pacific Ocean, A. anableps and A. microlepis that occurs in the Atlantic Ocean. This genus has prominent eyes divided horizontally by an opaque membrane, where each half has its own retina, allowing them to have both aerial an...

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Autor principal: Oliveira, Valéria de A.
Outros Autores: Barthem, Ronaldo B., Montag, Luciano Fogaça de A.
Grau: Resumo
Idioma: por
Publicado em: Museu Paraense Emílio Goeldi 2023
Assuntos:
Anableps anableps
Dowi
CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA::COMPORTAMENTO ANIMAL
Acesso em linha: https://repositorio.museu-goeldi.br/handle/mgoeldi/2157
id ir-mgoeldi-2157
recordtype dspace
spelling ir-mgoeldi-21572023-04-27T06:00:55Z Biologia alimentar de Anableps anableps no Rio Maracanã, Pará (Brasil) Feeding biology of Anableps anableps in Rio Maracanã, Pará State, Brazil Oliveira, Valéria de A. Barthem, Ronaldo B. Montag, Luciano Fogaça de A. Anableps anableps Dowi CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA::COMPORTAMENTO ANIMAL The genus Anableps comprises three species: A. dowi which is found in the Pacific Ocean, A. anableps and A. microlepis that occurs in the Atlantic Ocean. This genus has prominent eyes divided horizontally by an opaque membrane, where each half has its own retina, allowing them to have both aerial and aquatic vision simultaneously and the ability to explore shallow and near shore environments. The present work aimed to study the biology of A. anableps in the Maracanã River in the municipality of Maracanã, Pará State, Brazil, by identifying the items that make up its diet and population parameters. Collections were carried out from August 2002 to May 2003 in the Maracanã River. The specimens were captured using a tarrafa (20mm mesh) and later measured (mm), weighed (g), and the digestive tracts were removed. For the weight-length relationship the ANCOVA (Analysis of covariance) test was applied. For the diet analysis the Frequency of Occurrence method of the items was adopted. According to the analysis of covariance the females presented a higher data dispersion (r=0.88587) than the males (r=0.96232) (lower r value), which may be relative because many were pregnant. The difference in length-weight for the sexes was significant (ANCOVA, F(1,269) = 14.663, p < 0.001). Among the diet items considered in the importance analysis, the frequency of lower vegetables stood out only in the month of August (25%), being equal to or less than 10% in the other months. The importance of higher plants never exceeded 15%. The insects had an importance lower than 10% and the crustaceans presented their relative importance between 59% and 90% during all the months of the study. The study concludes that this species is omnivorous, presenting predatory and grazing behavior. O gênero Anableps compreende três espécies: A. dowi que é encontrada no Oceano Pacífico, A. anableps e A. microlepis com ocorrência no Oceano Atlântico. Este gênero possui olhos proeminentes divididos horizontalmente por uma membrana opaca, onde cada metade possui sua própria retina, permitindo que tenham uma visão aérea e aquática simultaneamente e capacidade de explorar ambientes rasos e próximos à margem. O presente trabalho teve como objetivo estudar a biologia de A. anableps no rio Maracanã no município de Maracanã no estado do Pará através da identificação dos itens que compõem sua dieta e dos parâmetros populacionais. As coletas foram realizadas de agosto de 2002 a maio de 2003 no rio Maracanã. Os exemplares foram capturados através de tarrafa (malha de 20mm) e posteriormente medidos (mm), pesados (g) e retirados os tratos digestivos. Para a relação peso-comprimento aplicou-se o teste da ANCOVA (Análise de covariância). Para a análise da dieta adotou-se o método Frequência de Ocorrência dos itens. De acordo com a análise de covariância as fêmeas apresentaram uma dispersão de dados maior (r=0,88587) que o dos machos (r=0,96232) (valor de r menor), que pode ser relativo por muitas estarem grávidas. A diferença em relação ao peso-comprimento para os sexos foi significativa (ANCOVA, F(1 ,269) = 14,663, p < 0,001) . Dentre os itens da dieta considerados na análise de importância a frequência dos vegetais inferiores se destacou somente no mês de agosto (25%), sendo nos demais meses igual ou inferior a 10%. A importância dos vegetais superiores nunca ultrapassou 15%. Os insetos tiveram importância inferior a 10% e os crustáceos, apresentaram sua importância relativa entre 59% e 90% durante todos os meses de estudo. O trabalho conclui que esta espécie é omnívora, apresentando comportamento de predador e pastador. 2023-04-26T17:03:45Z 2023-04-26 2023-04-26T17:03:45Z 2003-07-03 Resumo OLIVEIRA, Valéria de A.; BARTHEM, Ronaldo Borges; MONTAG, Luciano Fogaça de A. Biologia alimentar de Anableps anableps no Rio Maracanã, Pará (Brasil). In: SEMINÁRIO DE INICIAÇÃO CIENTIFICA DO MUSEU GOELDI, 11., 2003, Belém. Livro de Resumos. Belém, MPEG, 2003. https://repositorio.museu-goeldi.br/handle/mgoeldi/2157 por Biologia alimentar de Anableps anableps no Rio Maracanã, Pará (Brasil) Acesso Aberto application/pdf Museu Paraense Emílio Goeldi Brasil MPEG
institution Repositório Institucional - Museu Paraense Emílio Goeldi
collection RepositorioEmilioGoeldi
language por
topic Anableps anableps
Dowi
CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA::COMPORTAMENTO ANIMAL
spellingShingle Anableps anableps
Dowi
CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA::COMPORTAMENTO ANIMAL
Oliveira, Valéria de A.
Biologia alimentar de Anableps anableps no Rio Maracanã, Pará (Brasil)
topic_facet Anableps anableps
Dowi
CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA::COMPORTAMENTO ANIMAL
description The genus Anableps comprises three species: A. dowi which is found in the Pacific Ocean, A. anableps and A. microlepis that occurs in the Atlantic Ocean. This genus has prominent eyes divided horizontally by an opaque membrane, where each half has its own retina, allowing them to have both aerial and aquatic vision simultaneously and the ability to explore shallow and near shore environments. The present work aimed to study the biology of A. anableps in the Maracanã River in the municipality of Maracanã, Pará State, Brazil, by identifying the items that make up its diet and population parameters. Collections were carried out from August 2002 to May 2003 in the Maracanã River. The specimens were captured using a tarrafa (20mm mesh) and later measured (mm), weighed (g), and the digestive tracts were removed. For the weight-length relationship the ANCOVA (Analysis of covariance) test was applied. For the diet analysis the Frequency of Occurrence method of the items was adopted. According to the analysis of covariance the females presented a higher data dispersion (r=0.88587) than the males (r=0.96232) (lower r value), which may be relative because many were pregnant. The difference in length-weight for the sexes was significant (ANCOVA, F(1,269) = 14.663, p < 0.001). Among the diet items considered in the importance analysis, the frequency of lower vegetables stood out only in the month of August (25%), being equal to or less than 10% in the other months. The importance of higher plants never exceeded 15%. The insects had an importance lower than 10% and the crustaceans presented their relative importance between 59% and 90% during all the months of the study. The study concludes that this species is omnivorous, presenting predatory and grazing behavior.
format Resumo
author Oliveira, Valéria de A.
author2 Barthem, Ronaldo B.
Montag, Luciano Fogaça de A.
author2Str Barthem, Ronaldo B.
Montag, Luciano Fogaça de A.
title Biologia alimentar de Anableps anableps no Rio Maracanã, Pará (Brasil)
title_short Biologia alimentar de Anableps anableps no Rio Maracanã, Pará (Brasil)
title_full Biologia alimentar de Anableps anableps no Rio Maracanã, Pará (Brasil)
title_fullStr Biologia alimentar de Anableps anableps no Rio Maracanã, Pará (Brasil)
title_full_unstemmed Biologia alimentar de Anableps anableps no Rio Maracanã, Pará (Brasil)
title_sort biologia alimentar de anableps anableps no rio maracanã, pará (brasil)
publisher Museu Paraense Emílio Goeldi
publishDate 2023
url https://repositorio.museu-goeldi.br/handle/mgoeldi/2157
_version_ 1787135930858995712
score 11.755432

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