Population dynamics of Rimapenaeus constrictus (Stimpson, 1874) (Penaeoidea) on the southeastern Brazilian coast: implications for shrimp fishing management from a 5-year study on a bycatch species
ABSTRACT This is the first study to evaluate in broad spatiotemporal scales the growth parameters and population structure of Rimapenaeus constrictus, a barely damaged species composing the bycatch from shrimp fishing in the Western Atlantic. The abundance and size-class frequency distribution, grow...
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Academia Brasileira de Ciências
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| Series: | Anais da Academia Brasileira de Ciências |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017005008105&lng=en&tlng=en |
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| author | ANA ELISA B. LOPES RAPHAEL C. GRABOWSKI JOYCE R. GARCIA ADILSON FRANSOZO ROGÉRIO C. DA COSTA KÁTIA A.N. HIROKI ANTONIO L. CASTILHO |
| author_facet | ANA ELISA B. LOPES RAPHAEL C. GRABOWSKI JOYCE R. GARCIA ADILSON FRANSOZO ROGÉRIO C. DA COSTA KÁTIA A.N. HIROKI ANTONIO L. CASTILHO |
| author_sort | ANA ELISA B. LOPES |
| collection | DOAJ |
| description | ABSTRACT This is the first study to evaluate in broad spatiotemporal scales the growth parameters and population structure of Rimapenaeus constrictus, a barely damaged species composing the bycatch from shrimp fishing in the Western Atlantic. The abundance and size-class frequency distribution, growth, longevity and sex ratio were evaluated from monthly samples obtained in the northern littoral of São Paulo state from Jan/1998 to Jun/2003. We measured 5,812 individuals in which the sex ratio was skewed toward females; this was more evident in size classes greater than 10 mm in CL (carapace length) (binomial test, p<0.05). We selected 16 growth cohorts of females, and 8 of males, the majority consisting of younger individual cohorts excluded from the fisheries closure period. Growth estimates resulted in a CL∞ of 17.42 mm, a growth coefficient of 0.008 and a longevity of 579 days (1.60 year) for females, as well as a CL∞ of 16.3 mm, a growth coefficient of 0.01 and a longevity of 425 days (1.17 year) for males. Our results provide information of incontestable relevance to our knowledge of fishing management. We therefore strongly recommend that the fisheries closure period be changed to protect this species' recruitment period and consequently its adult individuals. |
| first_indexed | 2024-12-10T11:51:05Z |
| format | Article |
| id | doaj.art-d20e204b015a4820a5927ec772abaf42 |
| institution | Directory Open Access Journal |
| issn | 1678-2690 |
| language | English |
| last_indexed | 2024-12-10T11:51:05Z |
| publisher | Academia Brasileira de Ciências |
| record_format | Article |
| series | Anais da Academia Brasileira de Ciências |
| spelling | doaj.art-d20e204b015a4820a5927ec772abaf422022-12-22T01:49:56ZengAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências1678-2690010.1590/0001-3765201720160567S0001-37652017005008105Population dynamics of Rimapenaeus constrictus (Stimpson, 1874) (Penaeoidea) on the southeastern Brazilian coast: implications for shrimp fishing management from a 5-year study on a bycatch speciesANA ELISA B. LOPESRAPHAEL C. GRABOWSKIJOYCE R. GARCIAADILSON FRANSOZOROGÉRIO C. DA COSTAKÁTIA A.N. HIROKIANTONIO L. CASTILHOABSTRACT This is the first study to evaluate in broad spatiotemporal scales the growth parameters and population structure of Rimapenaeus constrictus, a barely damaged species composing the bycatch from shrimp fishing in the Western Atlantic. The abundance and size-class frequency distribution, growth, longevity and sex ratio were evaluated from monthly samples obtained in the northern littoral of São Paulo state from Jan/1998 to Jun/2003. We measured 5,812 individuals in which the sex ratio was skewed toward females; this was more evident in size classes greater than 10 mm in CL (carapace length) (binomial test, p<0.05). We selected 16 growth cohorts of females, and 8 of males, the majority consisting of younger individual cohorts excluded from the fisheries closure period. Growth estimates resulted in a CL∞ of 17.42 mm, a growth coefficient of 0.008 and a longevity of 579 days (1.60 year) for females, as well as a CL∞ of 16.3 mm, a growth coefficient of 0.01 and a longevity of 425 days (1.17 year) for males. Our results provide information of incontestable relevance to our knowledge of fishing management. We therefore strongly recommend that the fisheries closure period be changed to protect this species' recruitment period and consequently its adult individuals.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017005008105&lng=en&tlng=enFisheries biologylatitudinal variationrecruitment cohortsroughneck shrimpstock conservation |
| spellingShingle | ANA ELISA B. LOPES RAPHAEL C. GRABOWSKI JOYCE R. GARCIA ADILSON FRANSOZO ROGÉRIO C. DA COSTA KÁTIA A.N. HIROKI ANTONIO L. CASTILHO Population dynamics of Rimapenaeus constrictus (Stimpson, 1874) (Penaeoidea) on the southeastern Brazilian coast: implications for shrimp fishing management from a 5-year study on a bycatch species Anais da Academia Brasileira de Ciências Fisheries biology latitudinal variation recruitment cohorts roughneck shrimp stock conservation |
| title | Population dynamics of Rimapenaeus constrictus (Stimpson, 1874) (Penaeoidea) on the southeastern Brazilian coast: implications for shrimp fishing management from a 5-year study on a bycatch species |
| title_full | Population dynamics of Rimapenaeus constrictus (Stimpson, 1874) (Penaeoidea) on the southeastern Brazilian coast: implications for shrimp fishing management from a 5-year study on a bycatch species |
| title_fullStr | Population dynamics of Rimapenaeus constrictus (Stimpson, 1874) (Penaeoidea) on the southeastern Brazilian coast: implications for shrimp fishing management from a 5-year study on a bycatch species |
| title_full_unstemmed | Population dynamics of Rimapenaeus constrictus (Stimpson, 1874) (Penaeoidea) on the southeastern Brazilian coast: implications for shrimp fishing management from a 5-year study on a bycatch species |
| title_short | Population dynamics of Rimapenaeus constrictus (Stimpson, 1874) (Penaeoidea) on the southeastern Brazilian coast: implications for shrimp fishing management from a 5-year study on a bycatch species |
| title_sort | population dynamics of rimapenaeus constrictus stimpson 1874 penaeoidea on the southeastern brazilian coast implications for shrimp fishing management from a 5 year study on a bycatch species |
| topic | Fisheries biology latitudinal variation recruitment cohorts roughneck shrimp stock conservation |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017005008105&lng=en&tlng=en |
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