Connectivity between tropical coastal habitats:using stable isotopes in juvenile penaeid shrimps and potential food sources

Detalhes bibliográficos
Autor(a) principal: Abreu, Daniela Carvalho de, 1990-
Data de Publicação: 2008
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10451/1223
Resumo: Tese de mestrado, Biologia (Biologia e Gestão de Recursos Marinhos), 2008, Universidade de Lisboa, Faculdade de Ciências
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spelling Connectivity between tropical coastal habitats:using stable isotopes in juvenile penaeid shrimps and potential food sourcesCrustáceosEcossistemas aquáticosMangalTeses de mestradoTese de mestrado, Biologia (Biologia e Gestão de Recursos Marinhos), 2008, Universidade de Lisboa, Faculdade de CiênciasMangroves and its adjacent coastal systems such as seagrass meadows, muddy and sandy habitats are well known as nurseries areas for numerous species, particularly penaeid shrimps, one of the most important fishery resources in the world. Spatial and temporal coastal habitat utilization by individuals of different species is often associated to the food availability and protection against predators that each habitat may provide. A better understanding on the coastal habitats use as refuge and feeding ground for a variety of species and their movement between and across habitats is extremely important to elucidate the connectivity between the habitats which therefore is extremely important information for the preparation of conservation and management plans of the fishery resources and their habitats. Making use of carbon and nitrogen stable isotope analysis, the present study, conducted at Inhaca Island (south of Mozambique) in two mangrove fringed bays (Saco and Sangala Bays), intended to investigate the biological connectivity within the mangrove and its adjacent coastal habitats (sand flat, mud flat and seagrass meadows) in terms of feeding areas for four of the most commercially important penaeid shrimps species in Mozambique (Metapenaeus monoceros, M. stebbingi, Marsupenaeus japonicus and Fenneropenaeus indicus). Different potential food sources (mangrove leaves, seagrass leaves, epiphytic algae on the mangrove roots and on seagrass leaves, benthic microalgae, plankton, polychaetes, isopods and sediment detritus) had been collected and analyzed for each habitat and compared to shrimp species carbon and nitrogen isotope ratio. Significant differences (p < 0.05) were observed on carbon and nitrogen isotope ratios among potential food sources in each habitat on both Saco and Sangala Bays (composing an important tool for habitat discrimination) and also observed for carbon and nitrogen isotope ratios between shrimp species among the different habitats. Mangrove and seagrasses do not seem to be a direct food source for penaeid shrimps at Saco and Sangala Bays, but the seagrasses epiphytic algae, benthic microalgae, sediment detritus, polychaetes and plankton are the most likely potential food sources. No ontogenetic dietary shifts were reported for the penaeid shrimp species on the present study. It appears to exist a habitat connectivity related to feeding for all the shrimp species on both bays, which could be a result of tidal migration or even from a recent migration for a new habitat seeking for better protection. The mud and sand flat and the seagrass habitats are used as feeding area by shrimp species at Saco Bay and the sand flat and seagrass habitats are used as feeding areas at Sangala BayResumo alargado disponível em portuguêsPaula, José Pavão Mendes de, 1959-Macia, AdrianoRepositório da Universidade de LisboaAbreu, Daniela Carvalho de, 1990-2010-07-27T08:55:36Z20082008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdftext/xmlhttp://hdl.handle.net/10451/1223enghttp://catalogo.ul.pt/F/?func=item-global&doc_library=ULB01&type=03&doc_number=000559542info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-08T15:40:34Zoai:repositorio.ul.pt:10451/1223Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:27:52.993824Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Connectivity between tropical coastal habitats:using stable isotopes in juvenile penaeid shrimps and potential food sources
title Connectivity between tropical coastal habitats:using stable isotopes in juvenile penaeid shrimps and potential food sources
spellingShingle Connectivity between tropical coastal habitats:using stable isotopes in juvenile penaeid shrimps and potential food sources
Abreu, Daniela Carvalho de, 1990-
Crustáceos
Ecossistemas aquáticos
Mangal
Teses de mestrado
title_short Connectivity between tropical coastal habitats:using stable isotopes in juvenile penaeid shrimps and potential food sources
title_full Connectivity between tropical coastal habitats:using stable isotopes in juvenile penaeid shrimps and potential food sources
title_fullStr Connectivity between tropical coastal habitats:using stable isotopes in juvenile penaeid shrimps and potential food sources
title_full_unstemmed Connectivity between tropical coastal habitats:using stable isotopes in juvenile penaeid shrimps and potential food sources
title_sort Connectivity between tropical coastal habitats:using stable isotopes in juvenile penaeid shrimps and potential food sources
author Abreu, Daniela Carvalho de, 1990-
author_facet Abreu, Daniela Carvalho de, 1990-
author_role author
dc.contributor.none.fl_str_mv Paula, José Pavão Mendes de, 1959-
Macia, Adriano
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Abreu, Daniela Carvalho de, 1990-
dc.subject.por.fl_str_mv Crustáceos
Ecossistemas aquáticos
Mangal
Teses de mestrado
topic Crustáceos
Ecossistemas aquáticos
Mangal
Teses de mestrado
description Tese de mestrado, Biologia (Biologia e Gestão de Recursos Marinhos), 2008, Universidade de Lisboa, Faculdade de Ciências
publishDate 2008
dc.date.none.fl_str_mv 2008
2008-01-01T00:00:00Z
2010-07-27T08:55:36Z
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.uri.fl_str_mv http://hdl.handle.net/10451/1223
url http://hdl.handle.net/10451/1223
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://catalogo.ul.pt/F/?func=item-global&doc_library=ULB01&type=03&doc_number=000559542
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
text/xml
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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