Genetic diversity and population structure of the rockpool shrimp Palaemon elegans based on microsatellites: evidence for a cryptic species and differentiation across the Atlantic–Mediterranean transition
| Autor: | Inés González-Castellano, Jorge González-López, Ana M. González-Tizón, Andrés Martínez-Lage |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Species complex Range (biology) Population genetics Population lcsh:Medicine Population biology Biology Mediterranean Palaemon elegans 010603 evolutionary biology 01 natural sciences Article Evolutionary genetics 03 medical and health sciences Mediterranean Sea Animals Genetic variability education lcsh:Science Atlantic Ocean Genetic diversity education.field_of_study Multidisciplinary lcsh:R Microsatellite Genetic Variation Shrimp 030104 developmental biology Biogeography Evolutionary biology Genetic structure Cryptic species Atlantic Genetic markers lcsh:Q Palaemonidae Molecular ecology Microsatellite Repeats |
| Zdroj: | Scientific Reports, Vol 10, Iss 1, Pp 1-11 (2020) Scientific Reports RUC. Repositorio da Universidade da Coruña instname RUC: Repositorio da Universidade da Coruña Universidade da Coruña (UDC) |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-020-67824-7 |
| Popis: | The rockpool shrimp Palaemon elegans is an ecologically important crustacean species within the European coastline fauna. In the present study, genetic diversity and population structure and connectivity were assessed by examining 21 polymorphic microsatellite loci at 13 sampling sites located along the natural distribution range. All localities showed similar levels of genetic variability. Significant deficits of heterozygosity were recorded, most likely due to the presence of null alleles. Genetic structure analyses revealed two clearly genetically distinct groups within P. elegans but without following any geographical or oceanographic basis. Thus, our results provided nuclear evidence for the existence of a Mediterranean cryptic species within P. elegans, highlighting the need to revise its taxonomic status. Regarding P. elegans sensu stricto, population structuring was reported across the Atlantic–Mediterranean transition area, where the Almería-Orán Front restricts the gene flow between the Atlantic and the Mediterranean population. Moreover, while population connectivity was suggested between all Mediterranean localities, some substructure was found within the Atlantic group. Canary Islands exhibited a weak but significant genetic differentiation from all Atlantic mainland localities, consistent with the isolation-by-distance pattern detected throughout the Atlantic population. Overall, all these findings provided new insights into the population biology of P. elegans complex. |
| Databáze: | OpenAIRE |
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