Population dynamics of a hololimnetic population of the freshwater prawn Macrobrachium amazonicum (Heller, 1862) (Decapoda, Palaemonidae) in southeastern Brazil
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s10452-021-09889-8 http://hdl.handle.net/11449/229228 |
Resumo: | We investigated the population structure, sex ratio, growth parameters, longevity and natural mortality (M) of a hololimnetic population of the Amazon River prawn Macrobrachium amazonicum that presents different morphotypes. Sampling was performed monthly from May 2017 to April 2018 in a water reservoir in the municipality of Severínia, São Paulo, southeast Brazil. Juveniles, ovigerous females (OF) and males (except the morphotypes GC2) were more abundant in the dry season. The overall and seasonal sex ratio leaned toward males. Males were also more abundant in the larger size classes. Growth parameters for males and females were CL∞ = 19.98 mm and 16.94 mm, k = 4.42 year−1 and 3.94 year−1, t0 = -0.3762 and 0.0628, respectively. Longevity was 1.04 years for males and 1.17 years for females, and M was 4.43 year−1 for males and 3.94 year−1 for females. The OF sampled presented smaller sizes in comparison to those registered in the literature, which may be because they reach sexual maturity sooner than in other localities. Males attained larger asymptotic sizes than females; however, their increased growth rate resulted in lower longevity and higher M. High M values among larger males can occur due to disputes over territory, food, and females, while smaller males are often cannibalized. Both sexes presented low longevity, intense growth rates and small asymptotic sizes in comparison to those registered in the literature, which is likely due to high instability in the system caused by environmental variations and anthropic influences. |
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Population dynamics of a hololimnetic population of the freshwater prawn Macrobrachium amazonicum (Heller, 1862) (Decapoda, Palaemonidae) in southeastern BrazilCarideaGrowthLongevitySex RatioVon BertalanffyWe investigated the population structure, sex ratio, growth parameters, longevity and natural mortality (M) of a hololimnetic population of the Amazon River prawn Macrobrachium amazonicum that presents different morphotypes. Sampling was performed monthly from May 2017 to April 2018 in a water reservoir in the municipality of Severínia, São Paulo, southeast Brazil. Juveniles, ovigerous females (OF) and males (except the morphotypes GC2) were more abundant in the dry season. The overall and seasonal sex ratio leaned toward males. Males were also more abundant in the larger size classes. Growth parameters for males and females were CL∞ = 19.98 mm and 16.94 mm, k = 4.42 year−1 and 3.94 year−1, t0 = -0.3762 and 0.0628, respectively. Longevity was 1.04 years for males and 1.17 years for females, and M was 4.43 year−1 for males and 3.94 year−1 for females. The OF sampled presented smaller sizes in comparison to those registered in the literature, which may be because they reach sexual maturity sooner than in other localities. Males attained larger asymptotic sizes than females; however, their increased growth rate resulted in lower longevity and higher M. High M values among larger males can occur due to disputes over territory, food, and females, while smaller males are often cannibalized. Both sexes presented low longevity, intense growth rates and small asymptotic sizes in comparison to those registered in the literature, which is likely due to high instability in the system caused by environmental variations and anthropic influences.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Laboratory of the Biology of Marine and Freshwater Shrimps (LABCAM) Biological Sciences Department Faculty of Sciences UNESPInstitute of Health Sciences Paulista UniversityLaboratory of the Biology of Marine and Freshwater Shrimps (LABCAM) Biological Sciences Department Faculty of Sciences UNESPFAPESP: 2018/13685-5FAPESP: 2019/00661-3FAPESP: 2019/01308-5CNPq: 306672/2018-9Universidade Estadual Paulista (UNESP)Paulista UniversityPerroca, Júlia Fernandes [UNESP]Nogueira, Caio Santos [UNESP]Carvalho-Batista, AbnerCosta, Rogerio Caetano [UNESP]2022-04-29T08:31:20Z2022-04-29T08:31:20Z2022-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article21-34http://dx.doi.org/10.1007/s10452-021-09889-8Aquatic Ecology, v. 56, n. 1, p. 21-34, 2022.1573-51251386-2588http://hdl.handle.net/11449/22922810.1007/s10452-021-09889-82-s2.0-85111506687Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAquatic Ecologyinfo:eu-repo/semantics/openAccess2022-04-29T08:31:20Zoai:repositorio.unesp.br:11449/229228Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T08:31:20Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Population dynamics of a hololimnetic population of the freshwater prawn Macrobrachium amazonicum (Heller, 1862) (Decapoda, Palaemonidae) in southeastern Brazil |
title |
Population dynamics of a hololimnetic population of the freshwater prawn Macrobrachium amazonicum (Heller, 1862) (Decapoda, Palaemonidae) in southeastern Brazil |
spellingShingle |
Population dynamics of a hololimnetic population of the freshwater prawn Macrobrachium amazonicum (Heller, 1862) (Decapoda, Palaemonidae) in southeastern Brazil Perroca, Júlia Fernandes [UNESP] Caridea Growth Longevity Sex Ratio Von Bertalanffy |
title_short |
Population dynamics of a hololimnetic population of the freshwater prawn Macrobrachium amazonicum (Heller, 1862) (Decapoda, Palaemonidae) in southeastern Brazil |
title_full |
Population dynamics of a hololimnetic population of the freshwater prawn Macrobrachium amazonicum (Heller, 1862) (Decapoda, Palaemonidae) in southeastern Brazil |
title_fullStr |
Population dynamics of a hololimnetic population of the freshwater prawn Macrobrachium amazonicum (Heller, 1862) (Decapoda, Palaemonidae) in southeastern Brazil |
title_full_unstemmed |
Population dynamics of a hololimnetic population of the freshwater prawn Macrobrachium amazonicum (Heller, 1862) (Decapoda, Palaemonidae) in southeastern Brazil |
title_sort |
Population dynamics of a hololimnetic population of the freshwater prawn Macrobrachium amazonicum (Heller, 1862) (Decapoda, Palaemonidae) in southeastern Brazil |
author |
Perroca, Júlia Fernandes [UNESP] |
author_facet |
Perroca, Júlia Fernandes [UNESP] Nogueira, Caio Santos [UNESP] Carvalho-Batista, Abner Costa, Rogerio Caetano [UNESP] |
author_role |
author |
author2 |
Nogueira, Caio Santos [UNESP] Carvalho-Batista, Abner Costa, Rogerio Caetano [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Paulista University |
dc.contributor.author.fl_str_mv |
Perroca, Júlia Fernandes [UNESP] Nogueira, Caio Santos [UNESP] Carvalho-Batista, Abner Costa, Rogerio Caetano [UNESP] |
dc.subject.por.fl_str_mv |
Caridea Growth Longevity Sex Ratio Von Bertalanffy |
topic |
Caridea Growth Longevity Sex Ratio Von Bertalanffy |
description |
We investigated the population structure, sex ratio, growth parameters, longevity and natural mortality (M) of a hololimnetic population of the Amazon River prawn Macrobrachium amazonicum that presents different morphotypes. Sampling was performed monthly from May 2017 to April 2018 in a water reservoir in the municipality of Severínia, São Paulo, southeast Brazil. Juveniles, ovigerous females (OF) and males (except the morphotypes GC2) were more abundant in the dry season. The overall and seasonal sex ratio leaned toward males. Males were also more abundant in the larger size classes. Growth parameters for males and females were CL∞ = 19.98 mm and 16.94 mm, k = 4.42 year−1 and 3.94 year−1, t0 = -0.3762 and 0.0628, respectively. Longevity was 1.04 years for males and 1.17 years for females, and M was 4.43 year−1 for males and 3.94 year−1 for females. The OF sampled presented smaller sizes in comparison to those registered in the literature, which may be because they reach sexual maturity sooner than in other localities. Males attained larger asymptotic sizes than females; however, their increased growth rate resulted in lower longevity and higher M. High M values among larger males can occur due to disputes over territory, food, and females, while smaller males are often cannibalized. Both sexes presented low longevity, intense growth rates and small asymptotic sizes in comparison to those registered in the literature, which is likely due to high instability in the system caused by environmental variations and anthropic influences. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-29T08:31:20Z 2022-04-29T08:31:20Z 2022-03-01 |
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/10.1007/s10452-021-09889-8 Aquatic Ecology, v. 56, n. 1, p. 21-34, 2022. 1573-5125 1386-2588 http://hdl.handle.net/11449/229228 10.1007/s10452-021-09889-8 2-s2.0-85111506687 |
url |
http://dx.doi.org/10.1007/s10452-021-09889-8 http://hdl.handle.net/11449/229228 |
identifier_str_mv |
Aquatic Ecology, v. 56, n. 1, p. 21-34, 2022. 1573-5125 1386-2588 10.1007/s10452-021-09889-8 2-s2.0-85111506687 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Aquatic Ecology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
21-34 |
dc.source.none.fl_str_mv |
Scopus 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_ |
1792961700575576064 |