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      Crescimento de Aegla jarai Bond-Buckup & Buckup (Crustacea, Anomura, Aeglidae) Translated title: Growth of Aegla jarai Bond-Buckup & Buckup (Crustacea, Anomura, Aeglidae)

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          Abstract

          O crescimento de Aegla jarai foi analisado com objetivo de contribuir com informações referentes ao perfil bio-ecológico do caranguejo. As coletas foram realizadas de julho de 2001 a setembro de 2002 no Ribeirão Espíngarda, localizado no Parque Nacional da Serra do Itajaí, Santa Catarina, Brasil. Os espécimes foram separados por sexo e medidos quanto ao comprimento do cefalotórax e, após a biometria, devolvidos ao ribeirão. O modelo de von Bertalanffy foi utilizado para estimar o crescimento em tamanho através da progressão das modas resultando nas curvas de crescimento Ct = 25,11 [1- e - 0,0082 (t + 29,02)] (para os machos e Ct = 23,33 [1- e - 0,0048 (t + 46,45)] (para as fêmeas). As curvas baseadas nas médias também foram obtidas: Ct = 23,56 [1- e - 0,0101 (t + 19] (para os machos) e Ct = 22,69 [1- e - 0,0052 (t + 40,95)] (para as fêmeas). O recrutamento estendeu -se durante a primavera (outubro, novembro e dezembro) e no início do verão (janeiro). Na população de A. jarai, os machos atingiram tamanhos superiores e apresentaram uma taxa de crescimento maior do que as fêmeas. A longevidade, para ambos os sexos, foi estimada em dois anos.

          Translated abstract

          The growth of Aegla jarai was examined aiming to contribute with information about the bioecological profile of the species. The sampling was carried out at the Espíngarda River system situated at the Parque Nacional da Serra do Itajaí, Santa Catarina State, Brazil from July 2001 to September 2002. The sex and the length of cephalothorax (mm) were recorded and the specimens were brought back to the stream. The von Bertalanffy's model was used to estimate growth based on the modal progression of the size, which resulted in the growth curves described by Lt = 25.11 [1- e - 0.0082 (t + 29.02)] (for the males) and Lt = 23.33 [1- e - 0.0048 (t + 46.45)] (for the females). The curves based on the means were also obtained which were Lt = 23.56 [1- e - 0.0101 (t + 19] (for the males) and Lt = 22.69 [1- e - 0.0052 (t + 40.95)] (for the females). The recruitment period extended throughout spring (October, November and December) and early summer (January). In the population of A. jarai the males attained larger sizes and a higher growth rate than females. The estimated longevity was two years for both sexes.

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          Most cited references36

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          Dinâmica de populações aplicada à pesca e piscicultura

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            A new graphic method of describing the growth of animals.

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              A quantative theory of onganic growth (inquiries on growth laws. II)

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                Author and article information

                Journal
                rbzool
                Revista Brasileira de Zoologia
                Rev. Bras. Zool.
                Sociedade Brasileira de Zoologia (Curitiba, PR, Brazil )
                0101-8175
                June 2006
                : 23
                : 2
                : 490-496
                Affiliations
                [02] Porto Alegre Rio Grande do Sul orgnameUniversidade Federal do Rio Grande do Sul Brasil
                [03] Blumenau Santa Catarina orgnameAssociação Catarinense de Preservação da Natureza Brasil
                [01] Itajaí Santa Catarina orgnameIBAMA orgdiv1CEPSUL Brasil
                Article
                S0101-81752006000200024 S0101-8175(06)02300224
                b823f13f-d545-46bb-847f-e23b3f4edc94

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 11 May 2006
                : 17 August 2005
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 36, Pages: 7
                Product

                SciELO Brazil


                longevity,von Bertalanffy,Freshwater crustacean,Crustáceo de água doce,longevidade

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