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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. 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

Crescimento de Aegla jarai Bond-Buckup & Buckup (Crustacea, Anomura, Aeglidae)