Reproductive pattern of the South American endemic shrimp Artemesia longinaris (Decapoda: Penaeoidea), off São Paulo State, Brazil
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| Format: | Artículo científico |
| Sprache: | en |
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Universidad de Costa Rica
2007
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| _version_ | 1876478938645004288 |
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| author | A.L. Castilho |
| author_facet | A.L. Castilho |
| contents | Reproductive pattern of the South American endemic shrimp Artemesia longinaris (Decapoda: Penaeoidea), off São Paulo State, Brazil A.L. Castilho R.C. Costa A. Fransozo E.E. Boschi Biología Penaeidae recruitment reproduction sexual maturity Artemesia longinaris Sexual maturity, temporal reproductive pattern, and recruitment of juveniles were examined for thepenaeoid shrimp Artemesia longinaris sampled for five and a half years in a tropical locality off the coast of SãoPaulo (23º S), Brazil. Monthly samples were taken from January 1998 to June 2003 at depths between 5 and 45m. Ovarian maturity was used to examine breeding in adult females. Recruitment was defined as the percentageof juveniles of the total number of individuals in each month and season. A total of 10 288 females and 5 551males were collected. Estimated sizes (carapace length) at the onset of sexual maturity were 11.0 mm and 13.4mm for males and females, respectively. Over the five and a half years, females with ripe gonads were found inevery season, with the highest percentages in summer (January-March). Juvenile shrimps occurred year-round.These results suggest a continuous reproduction of A. longinaris with temperature acting as an environmentalstimulus for the duration of the ovary development cycle. These data and the hypothesis of the intrusion ofthe South Atlantic Central Water mass, which lowered water temperature and raised plankton production, suggestthat the end of spring and the beginning of summer were the principal reproductive months. The classicalparadigm of continuous reproduction at lower latitudes, with increased seasonality of breeding period at higherlatitudes seems to apply to this species. Rev. Biol. Trop. 55 (Suppl. 1): 39-48. Epub 2007 June, 29. 2007 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44909908 https://www.redalyc.org/journal/449/44909908/ https://www.redalyc.org/journal/449/44909908/html/ https://www.redalyc.org/journal/449/44909908/44909908.epub https://www.redalyc.org/journal/449/44909908/movil en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.55 |
| format | Artículo científico |
| id | redalyc_44909908 |
| institution | Redalyc |
| language | en |
| publishDate | 2007 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Reproductive pattern of the South American endemic shrimp Artemesia longinaris (Decapoda: Penaeoidea), off São Paulo State, Brazil A.L. Castilho Biología Penaeidae recruitment reproduction sexual maturity Artemesia longinaris Reproductive pattern of the South American endemic shrimp Artemesia longinaris (Decapoda: Penaeoidea), off São Paulo State, Brazil A.L. Castilho R.C. Costa A. Fransozo E.E. Boschi Biología Penaeidae recruitment reproduction sexual maturity Artemesia longinaris Sexual maturity, temporal reproductive pattern, and recruitment of juveniles were examined for thepenaeoid shrimp Artemesia longinaris sampled for five and a half years in a tropical locality off the coast of SãoPaulo (23º S), Brazil. Monthly samples were taken from January 1998 to June 2003 at depths between 5 and 45m. Ovarian maturity was used to examine breeding in adult females. Recruitment was defined as the percentageof juveniles of the total number of individuals in each month and season. A total of 10 288 females and 5 551males were collected. Estimated sizes (carapace length) at the onset of sexual maturity were 11.0 mm and 13.4mm for males and females, respectively. Over the five and a half years, females with ripe gonads were found inevery season, with the highest percentages in summer (January-March). Juvenile shrimps occurred year-round.These results suggest a continuous reproduction of A. longinaris with temperature acting as an environmentalstimulus for the duration of the ovary development cycle. These data and the hypothesis of the intrusion ofthe South Atlantic Central Water mass, which lowered water temperature and raised plankton production, suggestthat the end of spring and the beginning of summer were the principal reproductive months. The classicalparadigm of continuous reproduction at lower latitudes, with increased seasonality of breeding period at higherlatitudes seems to apply to this species. Rev. Biol. Trop. 55 (Suppl. 1): 39-48. Epub 2007 June, 29. 2007 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44909908 https://www.redalyc.org/journal/449/44909908/ https://www.redalyc.org/journal/449/44909908/html/ https://www.redalyc.org/journal/449/44909908/44909908.epub https://www.redalyc.org/journal/449/44909908/movil en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.55 |
| title | Reproductive pattern of the South American endemic shrimp Artemesia longinaris (Decapoda: Penaeoidea), off São Paulo State, Brazil |
| topic | Biología Penaeidae recruitment reproduction sexual maturity Artemesia longinaris |
| url | https://www.redalyc.org/articulo.oa?id=44909908 https://www.redalyc.org/journal/449/44909908/ https://www.redalyc.org/journal/449/44909908/html/ https://www.redalyc.org/journal/449/44909908/44909908.epub https://www.redalyc.org/journal/449/44909908/movil |