Genetic variation in the small bivalve Nuculana inaequisculpta along a retreating glacier fjord, King George Island, Antarctica

Munoz-Ramirez, Carlos P.; Beltran-Concha, Maribel; Perez-Araneda, Karla; Sands, Chester J.; Barnes, David K. A.; Roman-Gonzalez, Alejandro; de Lecea, Ander M.; Retallick, Katherine; van Landeghem, Katrien; Sheen, Katy; Gonnelli, Kelly; Scourse, James; Bascur, Miguel; Brante, Antonio

Abstract

Abstract: Climate change is strongly influencing regions of Antarctica but the consequences on microevolutionary processes have been little studied. Patterns of population genetic diversity were analysed in the Antarctic bivalve Nuculana inaequisculpta (Protobranchia: Nuculanidae) from a fjord with 70 years of documented climate-forced glacier retreat. Thirty-nine individuals from five sites at different distances from the glacier terminus were collected, and the COI gene was sequenced from each individual. No statistically significant genetic differentiation was found between sites nor a significant correlation between the proximity of glaciers and genetic diversity, suggesting a high dispersal capability and therefore, a planktonic larval stage for this species. Nevertheless, we encourage increasing the sample size and number of loci in future studies to confirm our findings.

Más información

Título según WOS: Genetic variation in the small bivalve Nuculana inaequisculpta along a retreating glacier fjord, King George Island, Antarctica
Título según SCIELO: Genetic variation in the small bivalve Nuculana inaequisculpta along a retreating glacier fjord, King George Island, Antarctica
Título de la Revista: Revista de biología marina y oceanografía
Volumen: 56
Número: 2
Editorial: Facultad de Ciencias del Mar, Universidad de Valparaíso
Fecha de publicación: 2021
Página de inicio: 151
Página final: 156
Idioma: en
DOI:

10.22370/rbmo.2021.56.2.3059

Notas: ISI, SCIELO