Historical background of the population biology of the swimming crab Arenaeus cribrarius (Crustacea: Portunidae) in the Ubatuba coast, southeast Brazil
This study presents results obtained 25 years ago on the population structure, sex ratio, and handedness of Arenaeus cribrarius in Ubatuba, North coast of São Paulo State, Brazil. Sampling studies were conducted during two different periods (from November 1988 to October 1989, and from May 1991 to...
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Instituto de Pesca
2016-06-01
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| Series: | Boletim do Instituto de Pesca |
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| Online Access: | https://institutodepesca.org/index.php/bip/article/view/1145 |
| _version_ | 1811171059733364736 |
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| author | Marcelo Antonio Amaro PINHEIRO André Luiz PARDAL-SOUZA |
| author_facet | Marcelo Antonio Amaro PINHEIRO André Luiz PARDAL-SOUZA |
| author_sort | Marcelo Antonio Amaro PINHEIRO |
| collection | DOAJ |
| description |
This study presents results obtained 25 years ago on the population structure, sex ratio, and handedness of Arenaeus cribrarius in Ubatuba, North coast of São Paulo State, Brazil. Sampling studies were conducted during two different periods (from November 1988 to October 1989, and from May 1991 to April 1993), one of them performed for pooled data, and other exclusively for Fortaleza Bay (monthly samples from November 1988 to October 1989). Males were larger (CW, average ± SD: 73.38 ± 15.78 mm) than females (68.45 ± 12.20 mm). The size between juvenile and adult stages has an overlap, for males (40-70mm CW) e fêmeas (45-75 mm CW). A prevalence of females was registered for pooled data (1:1.42; P < 0.01), but it was not recorded in Fortaleza Bay (1:1.25; P > 0.05). The sex ratio was close to 1:1 in the smaller size classes, with females dominating in the intermediate classes, and males in larger ones. In Fortaleza Bay, a female biased sex ratio was only noted in transect I (1:3.88; P < 0.05) and in the autumn (1:1.67; P < 0.05), with 73% of the specimens measured were right-handed.
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| first_indexed | 2024-04-10T17:08:03Z |
| format | Article |
| id | doaj.art-0ea23fc6d531403392ada4b1bbf3b80e |
| institution | Directory Open Access Journal |
| issn | 1678-2305 |
| language | English |
| last_indexed | 2024-04-10T17:08:03Z |
| publishDate | 2016-06-01 |
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| spelling | doaj.art-0ea23fc6d531403392ada4b1bbf3b80e2023-02-05T21:37:44ZengInstituto de PescaBoletim do Instituto de Pesca1678-23052016-06-0142210.20950/1678-2305.2016v42n2p419Historical background of the population biology of the swimming crab Arenaeus cribrarius (Crustacea: Portunidae) in the Ubatuba coast, southeast BrazilMarcelo Antonio Amaro PINHEIRO0André Luiz PARDAL-SOUZA1UNESP - Univ Estadual Paulista, Campus Experimental do Litoral Paulista (CLP), Grupo de Pesquisa em Biologia de Crustáceos (CRUSTA), Laboratório de Biologia de CrustáceosUNESP - Univ Estadual Paulista, Campus Experimental do Litoral Paulista (CLP), Grupo de Pesquisa em Biologia de Crustáceos (CRUSTA), Laboratório de Biologia de Crustáceos / UFABC - Universidade Federal do ABC, Centro de Ciências Naturais e Humanas (CCNH), Programa de Pós - graduação em Evolução e Diversidade This study presents results obtained 25 years ago on the population structure, sex ratio, and handedness of Arenaeus cribrarius in Ubatuba, North coast of São Paulo State, Brazil. Sampling studies were conducted during two different periods (from November 1988 to October 1989, and from May 1991 to April 1993), one of them performed for pooled data, and other exclusively for Fortaleza Bay (monthly samples from November 1988 to October 1989). Males were larger (CW, average ± SD: 73.38 ± 15.78 mm) than females (68.45 ± 12.20 mm). The size between juvenile and adult stages has an overlap, for males (40-70mm CW) e fêmeas (45-75 mm CW). A prevalence of females was registered for pooled data (1:1.42; P < 0.01), but it was not recorded in Fortaleza Bay (1:1.25; P > 0.05). The sex ratio was close to 1:1 in the smaller size classes, with females dominating in the intermediate classes, and males in larger ones. In Fortaleza Bay, a female biased sex ratio was only noted in transect I (1:3.88; P < 0.05) and in the autumn (1:1.67; P < 0.05), with 73% of the specimens measured were right-handed. https://institutodepesca.org/index.php/bip/article/view/1145body sizeFortaleza Bayhandednesspopulation structuresex ratio |
| spellingShingle | Marcelo Antonio Amaro PINHEIRO André Luiz PARDAL-SOUZA Historical background of the population biology of the swimming crab Arenaeus cribrarius (Crustacea: Portunidae) in the Ubatuba coast, southeast Brazil Boletim do Instituto de Pesca body size Fortaleza Bay handedness population structure sex ratio |
| title | Historical background of the population biology of the swimming crab Arenaeus cribrarius (Crustacea: Portunidae) in the Ubatuba coast, southeast Brazil |
| title_full | Historical background of the population biology of the swimming crab Arenaeus cribrarius (Crustacea: Portunidae) in the Ubatuba coast, southeast Brazil |
| title_fullStr | Historical background of the population biology of the swimming crab Arenaeus cribrarius (Crustacea: Portunidae) in the Ubatuba coast, southeast Brazil |
| title_full_unstemmed | Historical background of the population biology of the swimming crab Arenaeus cribrarius (Crustacea: Portunidae) in the Ubatuba coast, southeast Brazil |
| title_short | Historical background of the population biology of the swimming crab Arenaeus cribrarius (Crustacea: Portunidae) in the Ubatuba coast, southeast Brazil |
| title_sort | historical background of the population biology of the swimming crab arenaeus cribrarius crustacea portunidae in the ubatuba coast southeast brazil |
| topic | body size Fortaleza Bay handedness population structure sex ratio |
| url | https://institutodepesca.org/index.php/bip/article/view/1145 |
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