Artículo
Phylogeography reveals unexpectedly low genetic diversity in a widely distributed species: The case of the freshwater crab Aegla platensis (Decapoda: Anomura)
Zimmermann, Bianca L.; Crivellaro, Marcelo S.; Hauschild, Caroline B.; Bartholomei-Santos, Marlise L.; Crandall, Keith A.; Perez Losada, Marcos; Giri, Federico
; Collins, Pablo Agustin
; Santos, Sandro
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Fecha de publicación:
03/2018
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Biological Journal of The Linnean Society
ISSN:
0024-4066
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Habitat and taxon-specific properties could affect the propensity for cryptic species to be formed. For example, anomurans of the genus Aegla possess characteristics that suggest the existence of cryptic diversity. The widelydistributed species Aegla platensis, besides having been considered paraphyletic, shows a considerable amount of morphological variation in the carapace shape among populations. Thus, the aim of this study was to test the hypothesis that A. platensis encompasses a large complex of cryptic species. Seventeen populations of A. platensis from Argentina and Brazil were analysed using three molecular markers. Contrary to our expectations, 16 populations seem to belong to a single species. Only one population of A. platensis might represent an unrecognized new species. These results are intriguing because they do not fit the phylogeographical pattern seen in other aeglids, which usually have narrow distributions. Although intrinsic characteristics and/or historical biogeographical events could be related to these findings, the factors driving the broad distribution of A. platensis still need to be clarified. Finally, we highlight the fact that taxonomic issues in aeglids are far from being fully understood, and the use of a broad population-based sampling can be useful to improve our understanding of the group?s systematics and evolution.
Palabras clave:
AEGLIDS
,
CRYPTIC DIVERSITY
,
ENDANGERED CRUSTACEANS
,
MOLECULAR SYSTEMATICS
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(INALI)
Articulos de INST.NAC.DE LIMNOLOGIA (I)
Articulos de INST.NAC.DE LIMNOLOGIA (I)
Citación
Zimmermann, Bianca L.; Crivellaro, Marcelo S.; Hauschild, Caroline B.; Bartholomei-Santos, Marlise L.; Crandall, Keith A.; et al.; Phylogeography reveals unexpectedly low genetic diversity in a widely distributed species: The case of the freshwater crab Aegla platensis (Decapoda: Anomura); Wiley Blackwell Publishing, Inc; Biological Journal of The Linnean Society; 123; 3; 3-2018; 578-592
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