Reproductive biology and genetic diversity of the green turtle (Chelonia mydas) in Vamizi island, Mozambique
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/18591 |
Resumo: | INTRODUCTION: Vamizi, an Island located in the Western Indian Ocean, is visited by a small and not fully characterized green turtle (Chelonia mydas (L.)) population. This population is threatened by natural hazards and several human activities, which are used to identify conservation priorities for marine turtles. It was our aim to contribute to the knowledge of marine turtles that nest in Vamizi, with respect to its regional management, and to an area that may possibly be included on the UNESCO World Heritage List due to its potential Outstanding Universal Value.\n\nCASE DESCRIPTION: Here, we evaluate the nesting parameters (incubation period, clutch size, hatching and emergence successes rates) and patterns over an 8-year (2003 - 2010) conservation program. We also present the results of genetic diversity based on the analysis of approximately an 850 pb fragment of the mitochondrial DNA control region.\n\nDISCUSSION AND EVALUATION: We found that Vamizi beaches host a small number of nesting females, approximately 52 per year, but these have shown a reduction in their length. High hatching success (88.5 ± SD 17.2%, N = 649), emergence success rates (84.5 ± SD 20.4%, N = 649) were observed, and genetic diversity (N = 135), with 11 haplotypes found (7 new). It was also observed, in the later years of this study, a reduction in the incubation period, a dislocation of the nesting peak activity and an increase in the number of flooded nests and an increase of the number of nests in areas with lower human activity.\n\nCONCLUSIONS: Some resilience and behavioral plasticity seems to occur regarding human territory occupancy and climate changes. However, regardless of the results, aspects like what seems to be the reduction of some cohorts, the number of flooded nests and the diminishing of the incubation period (East and South facing beaches), show that conservation efforts have to be improved. |
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Reproductive biology and genetic diversity of the green turtle (Chelonia mydas) in Vamizi island, Mozambiquechelonia mydasclimate changesmozambique channel (mzc)mtdna diversityreproductive behaviorINTRODUCTION: Vamizi, an Island located in the Western Indian Ocean, is visited by a small and not fully characterized green turtle (Chelonia mydas (L.)) population. This population is threatened by natural hazards and several human activities, which are used to identify conservation priorities for marine turtles. It was our aim to contribute to the knowledge of marine turtles that nest in Vamizi, with respect to its regional management, and to an area that may possibly be included on the UNESCO World Heritage List due to its potential Outstanding Universal Value.\n\nCASE DESCRIPTION: Here, we evaluate the nesting parameters (incubation period, clutch size, hatching and emergence successes rates) and patterns over an 8-year (2003 - 2010) conservation program. We also present the results of genetic diversity based on the analysis of approximately an 850 pb fragment of the mitochondrial DNA control region.\n\nDISCUSSION AND EVALUATION: We found that Vamizi beaches host a small number of nesting females, approximately 52 per year, but these have shown a reduction in their length. High hatching success (88.5 ± SD 17.2%, N = 649), emergence success rates (84.5 ± SD 20.4%, N = 649) were observed, and genetic diversity (N = 135), with 11 haplotypes found (7 new). It was also observed, in the later years of this study, a reduction in the incubation period, a dislocation of the nesting peak activity and an increase in the number of flooded nests and an increase of the number of nests in areas with lower human activity.\n\nCONCLUSIONS: Some resilience and behavioral plasticity seems to occur regarding human territory occupancy and climate changes. However, regardless of the results, aspects like what seems to be the reduction of some cohorts, the number of flooded nests and the diminishing of the incubation period (East and South facing beaches), show that conservation efforts have to be improved.SpringerOpen2017-10-20T11:19:57Z2014-01-01T00:00:00Z2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/18591eng2193-180110.1186/2193-1801-3-540Anastácio, RitaSantos, CamilaLopes, CardosoMoreira, HelenaSouto, LuisFerrão, JorgeGarnier, JuliePereira, Mário J.info: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:RCAAP2024-02-22T11:35:21Zoai:ria.ua.pt:10773/18591Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:53:19.615520Repositório 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 |
Reproductive biology and genetic diversity of the green turtle (Chelonia mydas) in Vamizi island, Mozambique |
title |
Reproductive biology and genetic diversity of the green turtle (Chelonia mydas) in Vamizi island, Mozambique |
spellingShingle |
Reproductive biology and genetic diversity of the green turtle (Chelonia mydas) in Vamizi island, Mozambique Anastácio, Rita chelonia mydas climate changes mozambique channel (mzc) mtdna diversity reproductive behavior |
title_short |
Reproductive biology and genetic diversity of the green turtle (Chelonia mydas) in Vamizi island, Mozambique |
title_full |
Reproductive biology and genetic diversity of the green turtle (Chelonia mydas) in Vamizi island, Mozambique |
title_fullStr |
Reproductive biology and genetic diversity of the green turtle (Chelonia mydas) in Vamizi island, Mozambique |
title_full_unstemmed |
Reproductive biology and genetic diversity of the green turtle (Chelonia mydas) in Vamizi island, Mozambique |
title_sort |
Reproductive biology and genetic diversity of the green turtle (Chelonia mydas) in Vamizi island, Mozambique |
author |
Anastácio, Rita |
author_facet |
Anastácio, Rita Santos, Camila Lopes, Cardoso Moreira, Helena Souto, Luis Ferrão, Jorge Garnier, Julie Pereira, Mário J. |
author_role |
author |
author2 |
Santos, Camila Lopes, Cardoso Moreira, Helena Souto, Luis Ferrão, Jorge Garnier, Julie Pereira, Mário J. |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Anastácio, Rita Santos, Camila Lopes, Cardoso Moreira, Helena Souto, Luis Ferrão, Jorge Garnier, Julie Pereira, Mário J. |
dc.subject.por.fl_str_mv |
chelonia mydas climate changes mozambique channel (mzc) mtdna diversity reproductive behavior |
topic |
chelonia mydas climate changes mozambique channel (mzc) mtdna diversity reproductive behavior |
description |
INTRODUCTION: Vamizi, an Island located in the Western Indian Ocean, is visited by a small and not fully characterized green turtle (Chelonia mydas (L.)) population. This population is threatened by natural hazards and several human activities, which are used to identify conservation priorities for marine turtles. It was our aim to contribute to the knowledge of marine turtles that nest in Vamizi, with respect to its regional management, and to an area that may possibly be included on the UNESCO World Heritage List due to its potential Outstanding Universal Value.\n\nCASE DESCRIPTION: Here, we evaluate the nesting parameters (incubation period, clutch size, hatching and emergence successes rates) and patterns over an 8-year (2003 - 2010) conservation program. We also present the results of genetic diversity based on the analysis of approximately an 850 pb fragment of the mitochondrial DNA control region.\n\nDISCUSSION AND EVALUATION: We found that Vamizi beaches host a small number of nesting females, approximately 52 per year, but these have shown a reduction in their length. High hatching success (88.5 ± SD 17.2%, N = 649), emergence success rates (84.5 ± SD 20.4%, N = 649) were observed, and genetic diversity (N = 135), with 11 haplotypes found (7 new). It was also observed, in the later years of this study, a reduction in the incubation period, a dislocation of the nesting peak activity and an increase in the number of flooded nests and an increase of the number of nests in areas with lower human activity.\n\nCONCLUSIONS: Some resilience and behavioral plasticity seems to occur regarding human territory occupancy and climate changes. However, regardless of the results, aspects like what seems to be the reduction of some cohorts, the number of flooded nests and the diminishing of the incubation period (East and South facing beaches), show that conservation efforts have to be improved. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-01-01T00:00:00Z 2014 2017-10-20T11:19:57Z |
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 |
http://hdl.handle.net/10773/18591 |
url |
http://hdl.handle.net/10773/18591 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2193-1801 10.1186/2193-1801-3-540 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
SpringerOpen |
publisher.none.fl_str_mv |
SpringerOpen |
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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1799137584462430208 |