The differential genetic signatures related to climatic landscapes for jaguars and pumas on a continental scale.

Autor: Zanin M; Biology Department, Federal University of Maranhão, São Luís, Brazil., Gonzalez-Borrajo N; Departamento de Biologia de la Conservación, Estación Biológica de Doñana, Sevilla, Spain., ChÁvez C; Departamento de Ciencias Ambientales, Universidad Autónoma Metropolitana, Mexico City, Mexico., Rubio Y; Escuela de Biologia, Universidad Autónoma de Sinaloa, Culiacán, Mexico., Harmsen B; Panthera, New York, USA., Keller C; Biodiversity Coordination, Amazon Research Institute, Manaus, Brazil., Villalva P; Departamento de Biologia de la Conservación, Estación Biológica de Doñana, Sevilla, Spain., Srbek-Araujo AC; Biology Department, Vila Velha University, Vila Velha, Brazil., Costa LP; Biological Sciences Department, Federal University of Espírito Santo, Vitória, Brazil., Palomares F; Departamento de Biologia de la Conservación, Estación Biológica de Doñana, Sevilla, Spain.
Jazyk: angličtina
Zdroj: Integrative zoology [Integr Zool] 2021 Jan; Vol. 16 (1), pp. 2-18. Date of Electronic Publication: 2020 Oct 08.
DOI: 10.1111/1749-4877.12486
Abstrakt: Modern and paleoclimate changes may have altered species dynamics by shifting species' niche suitability over space and time. We analyze whether the current genetic structure and isolation of the two large American felids, jaguar (Panthera onca) and puma (Puma concolor), are mediated by changes in climatic suitability and connection routes over modern and paleoclimatic landscapes. We estimate species distribution under 5 climatic landscapes (modern, Holocene, last maximum glaciations [LMG], average suitability, and climatic instability) and correlate them with individuals' genetic isolation through causal modeling on a resemblance matrix. Both species exhibit genetic isolation patterns correlated with LMG climatic suitability, suggesting that these areas may have worked as "allele refuges." However, the jaguar showed higher vulnerability to climate changes, responding to modern climatic suitability and connection routes, whereas the puma showed a continuous and gradual transition of genetic variation. Despite differential responsiveness to climate change, both species are subjected to the climatic effects on genetic configuration, which may make them susceptible to future climatic changes, since these are progressing faster and with higher intensity than changes in the paleoclimate. Thus, the effects of climatic changes should be considered in the design of conservation strategies to ensure evolutionary and demographic processes mediated by gene flow for both species.
(© 2020 International Society of Zoological Sciences, Institute of Zoology/Chinese Academy of Sciences and John Wiley & Sons Australia, Ltd.)
Databáze: MEDLINE
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