RT Journal Article
T1 Cryptic speciation in gentoo penguins is driven by geographic isolation and regional marine conditions: Unforeseenvulnerabilities to global change
A1 Rodríguez Pertierra, Luis
A1 Segovia, Nicolas I.
A1 Noll, Daly
A1 Martinez, Pablo
A1 Pliscoff, Patricio
A1 Barbosa Alcón, Andrés
A1 Aragón Carrera, Pedro
A1 Raya Rey, Andrea
A1 Pistorius, Pierre
A1 Trathan, Phil
A1 Polanowski, Andrea
A1 Bonadonna, Francesco
A1 Le Bohec, Céline
A1 Bi, Ke
A1 Wang-Claypool, Cynthia Y.
A1 González-Acuña, Daniel
A1 Dantas, Gisele P. M.
A1 Bowie, Rauri C. K.
A1 Poulin, Elie
A1 Vianna, Juliana A.
AB Aim: The conservation of biodiversity is hampered by data deficiencies, with many new species and subspecies awaiting description or reclassification. Population genomics and ecological niche modelling offer complementary new tools for uncovering functional units of phylogenetic diversity. We hypothesize that phylogenetically delineated lineages of gentoo penguins (Pygoscelis papua) distributed across Antarctica and sub-Antarctic Islands are subject to spatially explicit ecological conditions that have limited gene flow, facilitating genetic differentiation, and thereby speciation processes. Location: Antarctica and sub-Antarctic area. Methods: We identify divergent lineages for gentoo penguins using ddRAD-seq and mtDNA, and generated species distribution models (SDMs) based on terrestrial and marine parameters. Results: Analyses of our genomic data supports the existence of four major lineages of gentoo penguin: (i) spanning the sub-Antarctic archipelagos north of the Antarctic Polar Front (APF); (ii) Kerguelen Island; (iii) South America; and (iv) across maritime Antarctic and the Scotia Arc archipelagos. The APF, a major current system around Antarctica, acts as the most important barrier separating regional sister lineages. Our ecological analyses spanning both the terrestrial (breeding sites) and marine (feeding sites) realms recover limited niche overlap among the major lineages of gentoo penguin. We observe this pattern to correspond more closely with regional differentiation of marine conditions than to terrestrial macroenvironmental features. Main conclusions: Recognition of regional genetic lineages as discrete evolutionary entities that occupy distinct ecological niches and also differ morphologically should be considered a priority for conservation. Gentoo penguins provide a good example of how conservation policy can be directly impacted by new insights obtained through the integration of larger genomic datasets with novel approaches to ecological modelling. This is particularly pertinent to polar environments that are among the most rapidly changing environments on earth.
PB Wiley
SN 1366-9516; Electronic: 1472-4642
YR 2020
FD 2020-05-28
LK https://hdl.handle.net/20.500.14352/7832
UL https://hdl.handle.net/20.500.14352/7832
LA eng
NO Ministerio de Ciencia e Innovación (MICINN)
NO Ministerio de Economía y Competitividad (MINECO)-Museo Nacional de Ciencias Naturales(MNCN)
NO Museo Nacional de Ciencias Naturales (MNCN)
NO Instituto Antártico Chileno
NO ETHOTAAF
NO Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil)
NO Comisión Nacional de Investigación Científica y Tecnológica (Chile)
DS Docta Complutense
RD 8 may 2024