Molt and reproduction of the European green crab Carcinus maenas (Decapoda: Portunidae) in Patagonia, Argentina
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| Format: | Artículo científico |
| Language: | en |
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Universidad de Costa Rica
2007
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| _version_ | 1876436064643579904 |
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| author | Julio H. Vinuesa |
| author_facet | Julio H. Vinuesa |
| contents | Molt and reproduction of the European green crab Carcinus maenas (Decapoda: Portunidae) in Patagonia, Argentina Julio H. Vinuesa Biología molt green crab Carcinus maenas reproductive biology The green crab Carcinus maenas, a decapod crustacean native to the northeastern Atlantic, has beeninvading distant areas, mainly for the last 25 years. This species is currently distributed along the coasts of thenortheastern Pacific, South Africa, Japan, South Australia, Tasmania, and western and eastern North America,among others. Here we provide information on the biology of the green crab occurring in the central area of SanJorge Gulf, Argentina, where it has been established since 1999-2000. Crabs of both sexes were hand-collectedbetween January 2004 and May 2005 from the intertidal zone and the upper sublittoral fringe. Sex, carapacewidth and molting stage were recorded. The reproductive status of males was based on the presence of sperm andspermatophores in testes and deferent ducts, and that of females on ovarian development and presence-absenceof eggs. Stages of embryonic development for ovigerous females were also recorded. The most importantphysiological events taking place during the annual cycle of the adult population were as follows: (1) male moltoccurred mainly in November and female molt between January and the beginning of March; (2) the reproductiveseason started in January, after a courtship in which the male, larger in size, holds the female until the molt,and spermatophores are ejaculated once the old exoskeleton is cast off; (3) females left the intertidal zone earlyand moved to lower littoral levels during fall and winter; (4) larvae appeared in September. Rev. Biol. Trop. 55(Suppl. 1): 49-54. Epub 2007 June, 29. 2007 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44909909 https://www.redalyc.org/journal/449/44909909/ https://www.redalyc.org/journal/449/44909909/html/ https://www.redalyc.org/journal/449/44909909/44909909.epub https://www.redalyc.org/journal/449/44909909/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_44909909 |
| institution | Redalyc |
| language | en |
| publishDate | 2007 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Molt and reproduction of the European green crab Carcinus maenas (Decapoda: Portunidae) in Patagonia, Argentina Julio H. Vinuesa Biología molt green crab Carcinus maenas reproductive biology Molt and reproduction of the European green crab Carcinus maenas (Decapoda: Portunidae) in Patagonia, Argentina Julio H. Vinuesa Biología molt green crab Carcinus maenas reproductive biology The green crab Carcinus maenas, a decapod crustacean native to the northeastern Atlantic, has beeninvading distant areas, mainly for the last 25 years. This species is currently distributed along the coasts of thenortheastern Pacific, South Africa, Japan, South Australia, Tasmania, and western and eastern North America,among others. Here we provide information on the biology of the green crab occurring in the central area of SanJorge Gulf, Argentina, where it has been established since 1999-2000. Crabs of both sexes were hand-collectedbetween January 2004 and May 2005 from the intertidal zone and the upper sublittoral fringe. Sex, carapacewidth and molting stage were recorded. The reproductive status of males was based on the presence of sperm andspermatophores in testes and deferent ducts, and that of females on ovarian development and presence-absenceof eggs. Stages of embryonic development for ovigerous females were also recorded. The most importantphysiological events taking place during the annual cycle of the adult population were as follows: (1) male moltoccurred mainly in November and female molt between January and the beginning of March; (2) the reproductiveseason started in January, after a courtship in which the male, larger in size, holds the female until the molt,and spermatophores are ejaculated once the old exoskeleton is cast off; (3) females left the intertidal zone earlyand moved to lower littoral levels during fall and winter; (4) larvae appeared in September. Rev. Biol. Trop. 55(Suppl. 1): 49-54. Epub 2007 June, 29. 2007 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44909909 https://www.redalyc.org/journal/449/44909909/ https://www.redalyc.org/journal/449/44909909/html/ https://www.redalyc.org/journal/449/44909909/44909909.epub https://www.redalyc.org/journal/449/44909909/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 | Molt and reproduction of the European green crab Carcinus maenas (Decapoda: Portunidae) in Patagonia, Argentina |
| topic | Biología molt green crab Carcinus maenas reproductive biology |
| url | https://www.redalyc.org/articulo.oa?id=44909909 https://www.redalyc.org/journal/449/44909909/ https://www.redalyc.org/journal/449/44909909/html/ https://www.redalyc.org/journal/449/44909909/44909909.epub https://www.redalyc.org/journal/449/44909909/movil |