Artículo
Long-distance dispersal, low connectivity and molecular evidence of a new cryptic species in the obligate rafter Caprella andreae Mayer, 1890 (Crustacea: Amphipoda: Caprellidae)
Autor/es | Cabezas, M. Pilar
Navarro Barranco, Carlos Ros Clemente, Macarena Guerra García, José Manuel |
Departamento | Universidad de Sevilla. Departamento de Zoología |
Fecha de publicación | 2013 |
Fecha de depósito | 2022-03-30 |
Publicado en |
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Resumen | The amphipod Caprella andreae Mayer, 1890
was recorded for the first time in Southern Iberian Peninsula (36440
1500N, 3590
3800W). This species is the only
obligate rafter of the suborder Caprellidea and has been
reported ... The amphipod Caprella andreae Mayer, 1890 was recorded for the first time in Southern Iberian Peninsula (36440 1500N, 3590 3800W). This species is the only obligate rafter of the suborder Caprellidea and has been reported to attach not only to floating objects such as ropes or driftwoods but also to turtle carapaces. Mitochondrial and nuclear markers were used to examine dispersal capabilities and population genetic structure of C. andreae across seven localities in the Mediterranean and Atlantic Ocean collected from floating substrata with different dispersal patterns. The strong population differentiation with no haplotypes shared between populations suggests that C. andreae is quite faithful to the substratum on which it settles. In addition, the proportionally higher genetic diversity displayed in populations living on turtles as well as the presence of highly differentiated haplotypes in the same turtle population may be indicative that these populations survive longer, which could lead C. andreae to prefer turtles instead of floating objects to settle and disperse. Therefore, rafting on floating objects may be sporadic, and ocean currents would not be the most important factor shaping patterns of connectivity and population structure in this species. Furthermore, molecular phylogenetic analyses revealed the existence of a cryptic species whose estimates of genetic divergence are higher than those estimated between C. andreae and other congeneric species (e.g. Caprella dilatata and Caprella penantis). Discovery of cryptic species among widely distributed small marine invertebrates is quite common and, in this case, prompts for a more detailed phylogenetic analysis and taxonomic revision of genus Caprella. On the other hand, this study also means the first record of the gammarids Jassa cadetta and Elasmopus brasiliensis and the caprellid Caprella hirsuta on drifting objects. |
Agencias financiadoras | Ministerio de Educación y Ciencia (MEC). España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) Junta de Andalucía Universidad de Sevilla |
Identificador del proyecto | CGL2011-22474
P11-RNM-7041 |
Cita | Cabezas, M.P., Navarro Barranco, C., Ros Clemente, M. y Guerra García, J.M. (2013). Long-distance dispersal, low connectivity and molecular evidence of a new cryptic species in the obligate rafter Caprella andreae Mayer, 1890 (Crustacea: Amphipoda: Caprellidae). Helgoland Marine Research, 67 (3), 483-497. |
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