Presence of Cyrtograpsus angulatus Dana, 1851 (Decapoda, Brachyura) on the Chilean northern Patagonian coast

in Crustaceana
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The marine fauna of decapod Crustacea, in all its diversity, can be negatively affected as a result of environmental changes, both on a local or a global scale. The present study aims to report the existence of Cyrtograpsus angulatus Dana, 1851, on the northern Patagonian coast, while concurrently describing some other decapod species associated with the various habitats. C. angulatus was originally described from the Chilean coast north of 36°43′S, and the present study revealed its presence down to 44°S. In the estuaries investigated, C. angulatus is the exclusive decapod species, whereas in coastal zones it can coexist with other species of marine decapods. Nevertheless, according to the null model of the co-occurrence of species, the species associations tested did not show any structured pattern. Some ecological and biogeographical patterns in relation to this species and its biocoenoses are discussed.


International Journal of Crustacean Research



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  • Map of the sites where the occurrence of of Cyrtograpsus angulatus Dana, 1851 was established in the present survey: 1, Puerto Cisnes; 2, San Juan; 3, Quillaipe; 4, Pargua; 5, Niebla; 6, Mehuín; 7, Queule; 8, Nehuentué.

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  • Photograph of Cyrtograpsus angulatus Dana, 1851, collected from San Juan (see map in fig. 1).

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  • Results of the UPGMA-analysis for the studied sites. See text for further explanation.

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