Population structure, mortality, and recruitment of Macrobrachium amazonicum (Heller, 1862) (Caridea: Palaemonidae) in the eastern Amazon region, Brazil
Autor(a) principal: | |
---|---|
Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1093/jcbiol/rux006 http://hdl.handle.net/11449/162826 |
Resumo: | Macrobrachium amazonicum (Heller, 1862) displays marked ecological plasticity as it is found in a variety of freshwater environments, from inland waters to estuaries. We analyzed a population located in the eastern Amazon region in northern Brazil. At the study site, Parananema Lake, Parintins, Amazonas state (02 degrees 40'52 '' S, 56 degrees 47'15 '' W), the species completes its life cycle in a freshwater environment influenced by the dynamics of the Amazon River. In addition to describing the population structure, this study examined data on the mortality, recruitment, and sex ratio of the population. Data were collected between March 2013 and February 2014, during which 1,300 individuals were sampled, including 386 males and 911 females (of which 155 were ovigerous). No significant difference in the mean sizes of males and females was found, and females outnumbered males in every month of the collection period. The results indicate that M. amazonicum reproduces continuously throughout the year at the study site. Peaks of different magnitudes were observed in the population size of this demographic group, with the largest occurring during the river's low-water season. These reproductive pulses resulted in bimodal monthly histograms occurring precisely in months following the observed recruitment modes. The females in this location reached maturity while they remain small in size. The smallest ovigerous female measured 5.1 mm (CL), which may be related to rapid gonadal development or extreme environmental conditions. Mortality analyses indicate that the species is not being overexploited locally, meaning that the obtained results and values were not affected by pressure from fishing. Our results confirm the existence of variations between estuarine and inland populations of M. amazonicum and indicate that the dynamics of the Amazon River, which is unique in its size and water volume, influences the life-cycle strategies of the species in the study area. |
id |
UNSP_2a71bed82cc286090d24247283985046 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/162826 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Population structure, mortality, and recruitment of Macrobrachium amazonicum (Heller, 1862) (Caridea: Palaemonidae) in the eastern Amazon region, BrazilAmazon forestaquacultureecologyreproductionsex ratioMacrobrachium amazonicum (Heller, 1862) displays marked ecological plasticity as it is found in a variety of freshwater environments, from inland waters to estuaries. We analyzed a population located in the eastern Amazon region in northern Brazil. At the study site, Parananema Lake, Parintins, Amazonas state (02 degrees 40'52 '' S, 56 degrees 47'15 '' W), the species completes its life cycle in a freshwater environment influenced by the dynamics of the Amazon River. In addition to describing the population structure, this study examined data on the mortality, recruitment, and sex ratio of the population. Data were collected between March 2013 and February 2014, during which 1,300 individuals were sampled, including 386 males and 911 females (of which 155 were ovigerous). No significant difference in the mean sizes of males and females was found, and females outnumbered males in every month of the collection period. The results indicate that M. amazonicum reproduces continuously throughout the year at the study site. Peaks of different magnitudes were observed in the population size of this demographic group, with the largest occurring during the river's low-water season. These reproductive pulses resulted in bimodal monthly histograms occurring precisely in months following the observed recruitment modes. The females in this location reached maturity while they remain small in size. The smallest ovigerous female measured 5.1 mm (CL), which may be related to rapid gonadal development or extreme environmental conditions. Mortality analyses indicate that the species is not being overexploited locally, meaning that the obtained results and values were not affected by pressure from fishing. Our results confirm the existence of variations between estuarine and inland populations of M. amazonicum and indicate that the dynamics of the Amazon River, which is unique in its size and water volume, influences the life-cycle strategies of the species in the study area.Univ Estado Amazonas, Parintins Ctr Adv Studies CESP UEA, Amazon Crustacean Studies Lab LECAM, Estr Odovaldo Novo,Km 1, BR-69151470 Parintins, Amazonas Am, BrazilUniv Estadual Paulista, Aquaculture Ctr CAUNESP, BR-14884900 Sao Paulo, SP, BrazilUniv Estadual Paulista, Ctr Study Biol Ecol & Crustacean Cultivat NEBECC, Dept Biol, BR-18618000 Botucatu, SP, BrazilUniv Estadual Sudoeste Bahia, Dept Nat Sci, Zool, BR-45031900 Vitoria Da Conquista, BA, BrazilUniv Estadual Paulista, Aquaculture Ctr CAUNESP, BR-14884900 Sao Paulo, SP, BrazilUniv Estadual Paulista, Ctr Study Biol Ecol & Crustacean Cultivat NEBECC, Dept Biol, BR-18618000 Botucatu, SP, BrazilOxford Univ PressUniv Estado AmazonasUniversidade Estadual Paulista (Unesp)Univ Estadual Sudoeste BahiaTaddei, Fabiano Gazzi [UNESP]Reis, Stefane de SouzaDavid, Fernanda Seles [UNESP]Silva, Thiago Elias da [UNESP]Fransozo, VivianFransozo, Adilson [UNESP]2018-11-26T17:32:59Z2018-11-26T17:32:59Z2017-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article131-141application/pdfhttp://dx.doi.org/10.1093/jcbiol/rux006Journal Of Crustacean Biology. Oxford: Oxford Univ Press, v. 37, n. 2, p. 131-141, 2017.0278-0372http://hdl.handle.net/11449/16282610.1093/jcbiol/rux006WOS:000401916100002WOS000401916100002.pdf44759602002565920000-0002-2067-5406Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Crustacean Biology0,445info:eu-repo/semantics/openAccess2024-04-09T15:29:36Zoai:repositorio.unesp.br:11449/162826Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-04-09T15:29:36Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Population structure, mortality, and recruitment of Macrobrachium amazonicum (Heller, 1862) (Caridea: Palaemonidae) in the eastern Amazon region, Brazil |
title |
Population structure, mortality, and recruitment of Macrobrachium amazonicum (Heller, 1862) (Caridea: Palaemonidae) in the eastern Amazon region, Brazil |
spellingShingle |
Population structure, mortality, and recruitment of Macrobrachium amazonicum (Heller, 1862) (Caridea: Palaemonidae) in the eastern Amazon region, Brazil Taddei, Fabiano Gazzi [UNESP] Amazon forest aquaculture ecology reproduction sex ratio |
title_short |
Population structure, mortality, and recruitment of Macrobrachium amazonicum (Heller, 1862) (Caridea: Palaemonidae) in the eastern Amazon region, Brazil |
title_full |
Population structure, mortality, and recruitment of Macrobrachium amazonicum (Heller, 1862) (Caridea: Palaemonidae) in the eastern Amazon region, Brazil |
title_fullStr |
Population structure, mortality, and recruitment of Macrobrachium amazonicum (Heller, 1862) (Caridea: Palaemonidae) in the eastern Amazon region, Brazil |
title_full_unstemmed |
Population structure, mortality, and recruitment of Macrobrachium amazonicum (Heller, 1862) (Caridea: Palaemonidae) in the eastern Amazon region, Brazil |
title_sort |
Population structure, mortality, and recruitment of Macrobrachium amazonicum (Heller, 1862) (Caridea: Palaemonidae) in the eastern Amazon region, Brazil |
author |
Taddei, Fabiano Gazzi [UNESP] |
author_facet |
Taddei, Fabiano Gazzi [UNESP] Reis, Stefane de Souza David, Fernanda Seles [UNESP] Silva, Thiago Elias da [UNESP] Fransozo, Vivian Fransozo, Adilson [UNESP] |
author_role |
author |
author2 |
Reis, Stefane de Souza David, Fernanda Seles [UNESP] Silva, Thiago Elias da [UNESP] Fransozo, Vivian Fransozo, Adilson [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Univ Estado Amazonas Universidade Estadual Paulista (Unesp) Univ Estadual Sudoeste Bahia |
dc.contributor.author.fl_str_mv |
Taddei, Fabiano Gazzi [UNESP] Reis, Stefane de Souza David, Fernanda Seles [UNESP] Silva, Thiago Elias da [UNESP] Fransozo, Vivian Fransozo, Adilson [UNESP] |
dc.subject.por.fl_str_mv |
Amazon forest aquaculture ecology reproduction sex ratio |
topic |
Amazon forest aquaculture ecology reproduction sex ratio |
description |
Macrobrachium amazonicum (Heller, 1862) displays marked ecological plasticity as it is found in a variety of freshwater environments, from inland waters to estuaries. We analyzed a population located in the eastern Amazon region in northern Brazil. At the study site, Parananema Lake, Parintins, Amazonas state (02 degrees 40'52 '' S, 56 degrees 47'15 '' W), the species completes its life cycle in a freshwater environment influenced by the dynamics of the Amazon River. In addition to describing the population structure, this study examined data on the mortality, recruitment, and sex ratio of the population. Data were collected between March 2013 and February 2014, during which 1,300 individuals were sampled, including 386 males and 911 females (of which 155 were ovigerous). No significant difference in the mean sizes of males and females was found, and females outnumbered males in every month of the collection period. The results indicate that M. amazonicum reproduces continuously throughout the year at the study site. Peaks of different magnitudes were observed in the population size of this demographic group, with the largest occurring during the river's low-water season. These reproductive pulses resulted in bimodal monthly histograms occurring precisely in months following the observed recruitment modes. The females in this location reached maturity while they remain small in size. The smallest ovigerous female measured 5.1 mm (CL), which may be related to rapid gonadal development or extreme environmental conditions. Mortality analyses indicate that the species is not being overexploited locally, meaning that the obtained results and values were not affected by pressure from fishing. Our results confirm the existence of variations between estuarine and inland populations of M. amazonicum and indicate that the dynamics of the Amazon River, which is unique in its size and water volume, influences the life-cycle strategies of the species in the study area. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-03-01 2018-11-26T17:32:59Z 2018-11-26T17:32:59Z |
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://dx.doi.org/10.1093/jcbiol/rux006 Journal Of Crustacean Biology. Oxford: Oxford Univ Press, v. 37, n. 2, p. 131-141, 2017. 0278-0372 http://hdl.handle.net/11449/162826 10.1093/jcbiol/rux006 WOS:000401916100002 WOS000401916100002.pdf 4475960200256592 0000-0002-2067-5406 |
url |
http://dx.doi.org/10.1093/jcbiol/rux006 http://hdl.handle.net/11449/162826 |
identifier_str_mv |
Journal Of Crustacean Biology. Oxford: Oxford Univ Press, v. 37, n. 2, p. 131-141, 2017. 0278-0372 10.1093/jcbiol/rux006 WOS:000401916100002 WOS000401916100002.pdf 4475960200256592 0000-0002-2067-5406 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal Of Crustacean Biology 0,445 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
131-141 application/pdf |
dc.publisher.none.fl_str_mv |
Oxford Univ Press |
publisher.none.fl_str_mv |
Oxford Univ Press |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803046306939142144 |