Pseudomastus deltaicus , gen. et sp.n. (Polychaeta: Capitellidae) from a shallow- water bay in the North- Western Mediterranean Sea

4 Páginas ; 2 FigurasThe Els Alfacs Bay (Ebre Delta) located on the North- East coast of the Iberian Peninsula (Western Mediterranean, 40”33’-38’N, W32’44’E) is a semi-enclosed shallow water area which can be characterized as a ‘paralic’ environment (sensu Guelorget & Perthuisot 1983): although its hydrographic regime is basically marine, it is clearly influenced by the terrestrial freshwater inputs reaching the bay during the spring-summer period (Palacin et al. 1991). Several recent studies have been documented on the zoobenthos of the bay (Soler-Martinez 1988; Palacin 1990; Palacin et al. 1991; Capaccioni-Azzati 1987; Capaccioni & San Martin 1989-1990; Martin 1990, 1991; Martin & Giangrande 1991). The last five, in particular, focused on its polychaete fauna. Paralic environments like Els Alfacs Bay could offer particularly favorable sites for speciation because they are virtually isolated, having high levels of environmental stress. Among the results of the aforementioned studies, two new species of Polychaeta (Capaccioni & San Martin 1989-1990; Martin & Giangrande 1991) and 13 of Nematoda (Palacin 1990) have been identified. In 1984-1985, a large number of incomplete specimens of a Capitellid species were collected from muddy bottoms of the Els Alfacs Bay. They were identified initially as Pseudoleiocapitella fmiveli (Cap;iccioni-Azzati 1987). Additional entire spccimens of the same species were obtained in 1987. l’hc number o f 12 thoracic sctigci the different setal pattern, together with the prcscncc o f an abdominal branchiatc region, allow us to separate these spccirncns from all previously described gcnera and specics, although similarities can be lound with species of Pseudoleiocapitella and Mastobrunch us. Con sc q uc n t I y , ;I new genus and species of Capitellidae is described.Peer reviewe

Listado taxonómico comentado de los Capitélidos (Annelida, Polychaeta) de la península Iberica, islas Chafarinas, Baleares y Canarias

The present annotated checklist has been elaborated after revision of preserved materials (from the Museo Nacional de Ciencias Naturales, Madrid and the reference collection of the Marine Biology Laboratory of the University of Valencia) and published literature related to capitellids from the Iberian Peninsula, Chafarinas, Balearic and Canary Islands. Twenty-four species and subspecies belonging to thirteen genera are recognized as valid taxa. With this checklist we include some taxonomic details and information on distribution at both global and regional levels. This work includes the setal formula and diagrammatic representation of capitellid taxa treated in this study.Se ha elaborado un listado taxonómico comentado de los capitélidos de la Península Ibérica, Islas Chafarinas, Baleares y Canarias a partir de la revisión de materiales (Museo Nacional de Ciencias Naturales, Madrid y colección de referencia del Laboratorio de Biología Marina de la Universidad de Valencia) y de la bibliografía publicada referente a este grupo. Se reconocen como taxones válidos 24 especies y subespecies pertenecientes a 13 géneros. En esta lista se incluyen para cada especie algunos detalles taxonómicos e información sobre su distribución geográfica tanto a nivel mundial como regional. Asimismo, se aporta la fórmula setal y el diagrama gráfico para los taxones contemplados en este estudio

Updated distribution and first description of Scyllarus subarctus (Crustacea: Scyllaridae) decapodid stage

Este artículo contiene 8 páginas, 4 figuras, 2 tablas.The phyllosoma larva of spiny and slipper lobsters (Palinuridae and Scyllaridae respectively) can disperse during several months before metamorphosing into a decapodid stage, which is the key phase for a successful settlement. The largest Scyllarus decapodid known to date was recently collected near the Canary Islands and identified by DNA analysis as Scyllarus subarctus. This species had never been previously reported from the area, and the decapodid stage is described here for the first time. The examination of further museum specimens has now significantly expanded the current distribution of S. subarctus, including much of the NW African coast, St Helena and Canary Islands. These results highlight the importance of combining molecular analysis of recently collected specimens with historical collections.This research was funded by projects CETOBAPH (CGL2009-1311218) and POPCOMICS (CTM2017-88080) of the Spanish Government and EU-Synthesys grants (DK-TAF-4873: Morphological study of Achelata lobsters and phyllosoma larvae from Danish collections; DE-TAF-7058: Achelata lobsters from the Museum für Naturkunde and FR-TAF-5980: Description of phyllosoma stages of West-African lobster species). FP acknowledges project FP7 Marie Curie IAPP #324475 ‘Colbics’ of the European Union and a post-doctoral contract funded by the Beatriu de Pinos Programme of the Generalitat de Catalunya.Peer reviewe

Amphi-Atlantic dispersal of scyllarid lobsters (Crustacea, Decapoda): molecular and larval evidence

Trabajo presentado en la The Crustacean Society Mid-Year Meeting (TCS), celebrado en Barcelona del 19 al 22 de junio. de 2017.-- Esta reunión de la Sociedad internacional de Crustáceos se incluyó el 11th Colloquium Crustacea Decapoda Mediterranea y la 5th Crustacean Larval Conference.N

Possible amphi-Atlantic dispersal of Scyllarus lobsters (Crustacea: Scyllaridae): molecular and larval evidence

14 pages, 6 figures, 1 tableDNA methods may contribute to better understand larval dispersal of marine lobsters. The molecular analysis of phyllosoma specimens from the East Atlantic facilitated for the first time here the description of Scyllarus subarctus Crosnier, 1970 larvae. The identification of S. subarctus phyllosomae from Cabo Verde confirmed that this species has a much wider geographic distribution than previously thought. Moreover, the phylogenetic analyses placed S. depressus from the Western Atlantic together with the African species S. subarctus, instead of other American Scyllarus. In fact, S. depressus and S. subarctus formed a strongly supported clade with comparatively low genetic differentiation, suggesting the possibility that they might be recently-diverged sister taxa with an amphi-Atlantic distribution. Support for this is provided by the examination of S. subarctus larvae and the lack of any qualitative character that would allow for differentiation between the adults of S. subarctus and S. depressus. The results obtained highlight the challenges of current Scyllarus systematics and the need for further research on Atlantic slipper lobstersThis research was funded by projects CHALLENGEN (CTM2013-48163) and MAFIA (CTM2012-39587-C04-02) of the Spanish Government and EU-Synthesys grants (DK-TAF-4873: Morphological study of Achelata lobsters and phyllosoma larvae from Danish collections and FR-TAF-5980: Description of phyllosoma stages of West-African lobster species). FP acknowledges project FP7 Marie Curie IAPP #324475 ‘Colbics’ of the European Union and a post-doctoral contract funded by the Beatriu de Pinos Programme of the Generalitat de Catalunya.Peer Reviewe