The occurrence of Natsushima bifurcata (Polychaeta: Nautiliniellidae) in Acharax hosts from mud volcanoes in the Gulf of Cadiz (south Iberian and north Moroccan Margins)
Fifteen specimens of nautiliniellid polychaetes were found in the mantle cavity of bivalves of the genus Acharax (Solemyidae) collected in several mud volcanoes from the Gulf of Cadiz. They were identified as Natsushima bifurcata Miura and Laubier (1990), a species previously known only from Sagami...
| Published in: | Nonlinear Processes in Geophysics |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Consejo Superior de Investigaciones Científicas
2007
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| Subjects: | |
| Online Access: | https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/31 https://doi.org/10.3989/scimar.2007.71n195 |
| Summary: | Fifteen specimens of nautiliniellid polychaetes were found in the mantle cavity of bivalves of the genus Acharax (Solemyidae) collected in several mud volcanoes from the Gulf of Cadiz. They were identified as Natsushima bifurcata Miura and Laubier (1990), a species previously known only from Sagami Bay (Japan). The morphological comparison of these specimens with the holotype suggests that they belong to the same morphological species, although further studies should consider whether they could be genetically different. The ecology of the species is discussed in relation to the available information on the family. The occurrence of Natsushima bifurcata in the Gulf of Cadiz is the first record of the species in the North Atlantic. Quince ejemplares de poliquetos pertenecientes a la familia Nautiliniellidae se encontraron en la cavidad del manto de bivalvos del género Acharax (Solemyidae) procedentes de varios volcanes de fango del Golfo de Cádiz. Los ejemplares se identificaron como Natsushima bifurcata Miura y Laubier (1990), una especie citada únicamente de la bahía de Sagami (Japón). El presente trabajo analiza la morfología de los ejemplares de Cádiz en comparación con la del holotipo y sugiere que ambas poblaciones pertenecen al mismo morfotipo, sin que no por ello se pueda descartar la existencia de diferencias en el componente genético. Asímismo, se discuten aspectos ecológicos basados en la información disponible sobre la familia. La aparición de Natsushima bifurcata en el Golfo de Cádiz representa la primera cita para el Atlántico Norte. |
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