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NÚMERO 2

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First measurements of euphausiid growth rates in the northern Humboldt Current (23ºS)

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Epibiontes en juveniles de tortugas carey Eretmochelys imbricata varadas en la costa del Departamento de Rocha, Uruguay

Pachygrapsus transversus en Isla de Pascua, ¿De qué especie estamos hablando?(Decapoda, Brachyura, Grapsoidea)

Autores

CORRESPONSAL

Guillermo L. Guzmán

gguzman@unap.cl

1

1

Facultad de Recursos Naturales Renovables, Universidad Arturo Prat, Avenida Arturo Prat 2120, Código Postal 1110939, Casilla de Correos 121, Iquique, Chile

2

2

Laboratorio de Carcinología, Museo de Zoología, Universidad de Sao Paulo, Avenida Nazaré 481, CEP0426300 - SP, Sao Paulo, Brasil

Nicole Olguín

2

2

Laboratorio de Carcinología, Museo de Zoología, Universidad de Sao Paulo, Avenida Nazaré 481, CEP0426300 - SP, Sao Paulo, Brasil

Resumen

Pachygrapsus transversus has been reported repeatedly at Easter Island, south Pacific, this species was registered in both side of America and in the West and East Atlantic and Mediterranean Sea. In a phylogeographic analysis, P. transversus is considered a species of the Atlantic Ocean and Pachygrapsus socius has been regarded as part of the Eastern Pacific fauna. At the same time, a review of the genus Pachygrapsus concludes that the species from Easter Island could be Pachygrapsus laevimanus. A recent paper about the phylogeny of the Grapsidae, reveal that the genus Pachygrapsus is polyphyletic, with just 5 species. In the same study is showed that P. laevimanus belong to genus Planes. Here we analyze the gonopods of the males of new material of this group from Easter Island, and compare with other species of genera Pachygrapsus and Planes. We conclude that the species in Easter Island belong to Planes laevimanus. Additional comparisons between species are given, as well as with genus Planes, sister group of Pachygrapsus.

Palabras clave

Taxonomy, gonopods, Planes, Easter Island

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