Two new polychaete species living in the mantle cavity of <em>Calyptogena gallardoi</em> (Bivalvia: Vesicomyidae) at a methane seep site off central Chile (~36°S)

Eduardo Quiroga; Javier Sellanes

doi:10.3989/scimar.2009.73n2399

Autores/as

Eduardo Quiroga Centro de Investigación en Ecosistemas de la Patagonia
Javier Sellanes Universidad Católica del Norte, Facultad de Ciencias del Mar

DOI:

https://doi.org/10.3989/scimar.2009.73n2399

Palabras clave:

afloramiento de metano, Nautiliniellidae, Antonbruunidae, poliquetos simbiontes, Chile

Resumen

Dos nuevas especies de poliquetos simbiontes pertenecientes a las familias Nautiliniellidae y Antonbruunidae se encontraron en la cavidad del manto del bivalvo vesicómyido Calyptogena gallardoi Sellanes y Krylova, 2005, proveniente de una zona de afloramiento de metano frente a Chile central. Shinkai robusta n. sp. se caracteriza por presentar parapodios modificados con notopodios bien desarrollados y robustos, nueve setas simples por parapodio en la región media del cuerpo y un prostomio sub-triangular, truncado anteriormente, con un par de pequeñas antenas cirriformes. La nueva especie es similar a Shinkai longipedata Miura y Ohta, 1991, y Shinkai semilonga Miura y Hashimoto, 1996. Antonbruuniia gerdesi n. sp. se caracteriza por presentar un prostomio trapezoidal, con cinco antenas occipitales sub-iguales, incluyendo una antena central bien desarrollada, insertada en la superficie dorsal posterior del prostomio, y un pigidio conspicuo con dos cirros anales cortos digitiformes. Estas dos nuevas especies constituyen la primera cita de poliquetos simbiontes de bivalvos quimiosimbióticos en el Pacífico sur-oriental.

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Biografía del autor/a

Javier Sellanes, Universidad Católica del Norte, Facultad de Ciencias del Mar

Centro de Investigación Oceanográfica en el Pacífico Sur-Oriental. Universidad de Concepción. Chile

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