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Estrutura populacional de Portunus spinimanus Latreille (Crustacea, Portunidae) na Armação do Itapocoroy, Penha, Santa Catarina, Brasil Zoologia
Branco,Joaquim Olinto; Lunardon-Branco,Maria José; Souto,Flávio Xavier.
Portunus spinimanus Latreille, 1819 is one abundant Portunidae speeies whieh are eaught by sea-bob-shrimps artisanal fishery in Armaçãodo Itapoeoroy,Penha, Santa Catarina, Brazil. Aiming to analyze its population strueture, a total of 995 males and 1925 fernaleswere eollected by means of overtrawl frorn January to Decernber 1995, between the depthsof 610 10meters,in lhe periodsof morning,afternoonand evening. The width variation of lhe carapaee ranged írom 3.0 to 14.0 em in the males and 3.0 to 11.0emin females. The species presents growth isometric and the males reach width and weight assintoticand bigger that lhe females.The estirnatedfirst maturation width was between 6.8 and 7.6 em, reached with lhe approxirnated age of 15 months. The artisanal fishery...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Portunus spinimanus; Population structure; Artisanal fishery.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000300010
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Reproductive cycle of the swimming crab Portunus spinimanus Latreille (Crustacea, Decapoda, Brachyura) from Ubatuba, São Paulo, Brazil Zoologia
Santos,Sandro; Negreiros-Fransozo,Maria Lucia.
This study analyses some reproductive aspects of Portunus spinimanus Latreille, 1819, a crab usually commercialized in Ubatuba region. Monthly otter-trawl collections were taken for two years along the northern coast of São Paulo State, Brazil. The reproductive period was studied based on the frequency of ovigerous females in the population along the year; the frequency of physiologically mature swimming crabs and the type of spawn. The condition of development of ovigerous females ovary was associated with the stage of eggs development. This species presents continuous reproduction in Ubatuba region and total spawn, but with successive broods, which suggests a multiple spawn during the reproduction period.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Portunus spinimanus; Reproduction; Spawn; Brazilian coast.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000400025
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Ecologia trófica de Portunus spinimanus Latreille (Decapoda, Portunidae) na Armação do Itapocoroy, Penha, Santa Catarina, Brasil Zoologia
Branco,Joaquim Olinto; Lunardon-Branco,Maria José.
The feeding of P. spinunanus Latreille, 1819 was analyzed from January to December 1995 using the frequency of occurrence, frequency of points and feeding index methods. The species presents a broad trophic specter and diversified, composed by 24 items. The trophic analyses indicated the species show that the categories Crustacea, Osteichthyes, Echinodennata and Mollusca were the rnostexploited resources.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Decapoda; Portunidae; Portunus spinimanus; Trophic ecology; Natural diet.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000300009
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