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Genetic hypervariability of a Northeastern Atlantic venomous rockfish
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Orientador(es)
Resumo(s)
Background: Understanding the interplay between climate and current and
historical factors shaping genetic diversity is pivotal to infer changes in marine
species range and communities’ composition. A phylogeographical break between
the Atlantic and the Mediterranean has been documented for several marine
organisms, translating into limited dispersal between the two basins.
Methods: In this study, we screened the intraspecific diversity of 150 individuals of
the Madeira rockfish (Scorpaena maderensis) across its distributional range (seven
sampling locations in the Atlantic and Mediterranean basins) using the
mitochondrial control region and the nuclear S7 first intron.
Results: The present work is the most comprehensive study done for this species,
yielding no genetic structure across sampled locations and no detectable
Atlantic-Mediterranean break in connectivity. Our results reveal deep and
hyper-diverse bush-like genealogies with large numbers of singletons and very few
shared haplotypes. The genetic hyper-diversity found for the Madeira rockfish is
relatively uncommon in rocky coastal species, whose dispersal capability is limited by
local oceanographic patterns. The effect of climate warming on the distribution of the
species is discussed.
Descrição
Palavras-chave
Population structure Connectivity Atlantic-Mediterranean transition Range expansion Scorpaena maderensis Scorpaenidae
Contexto Educativo
Citação
Francisco, S. M., Castilho, R., Lima, C. S., Almada, F., Rodrigues, F., Šanda, R., Vukić, J., Pappalardo, A. M., Ferrito, V., & Robalo, J. I. (2021). Genetic hypervariability of a Northeastern Atlantic venomous rockfish. PeerJ, 1–21.
Editora
PeerJ Inc.