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Abstract:

Studies of genetic differentiation in fragmented environments help us to identify those landscape features that most affect gene flow and dispersal patterns. Particularly, the assessment of the relative significance of intrinsic biological and environmental factors affecting the genetic structure of populations becomes crucial. In this work, we assess the current dispersal patterns and population structure of Ctenomys “chasiquensis”, a vulnerable and endemic subterranean rodent distributed on a small area in Central Argentina, using 9 polymorphic microsatellite loci. We use landscape genetics approaches to assess the relationship between genetic connectivity among populations and environmental attributes. Our analyses show that populations of C. “chasiquensis” are moderately to highly structured at a regional level. This pattern is most likely the outcome of substantial gene flow on the more homogeneous sand dune habitat of the Northwest of its distributional range, in conjunction with an important degree of isolation of eastern and southwestern populations, where the optimal habitat is surrounded by a highly fragmented landscape. Landscape genetics analysis suggests that habitat quality and longitude were the environmental factors most strongly associated with genetic differentiation/uniqueness of populations. In conclusion, our results indicate an important genetic structure in this species, even at a small spatial scale, suggesting that contemporary habitat fragmentation increases population differentiation. © 2017, Springer International Publishing AG.

Registro:

Documento: Artículo
Título:Landscape genetics in the subterranean rodent Ctenomys “chasiquensis” associated with highly disturbed habitats from the southeastern Pampas region, Argentina
Autor:Mora, M.S.; Mapelli, F.J.; López, A.; Gómez Fernández, M.J.; Mirol, P.M.; Kittlein, M.J.
Filiación:Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Marinas y Costeras, (IIMyC, CONICET), Universidad Nacional de Mar del Plata, Funes 3250, 3rd floor, 7600, Mar del Plata, Argentina
Área de Recursos Naturales, CONICET INTA EEA Bariloche, CC 277 8400, Bariloche, Río Negro, Argentina
Grupo de Genética y Ecología en Conservación y Biodiversidad, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”, CONICET, Ángel Gallardo 470, Buenos Aires, Argentina
Palabras clave:Ctenomys “chasiquensis”; Dispersal patterns; Landscape genetics; Population genetics; Subterranean rodents; microsatellite DNA; animal; Argentina; ecosystem; gene flow; gene linkage disequilibrium; genetic variation; genetics; genotyping technique; phylogeography; rodent; Animals; Argentina; Ecosystem; Gene Flow; Genetic Variation; Genotyping Techniques; Linkage Disequilibrium; Microsatellite Repeats; Phylogeography; Rodentia
Año:2017
Volumen:145
Número:6
Página de inicio:575
Página de fin:591
DOI: http://dx.doi.org/10.1007/s10709-017-9983-9
Título revista:Genetica
Título revista abreviado:Genetica
ISSN:00166707
CODEN:GENEA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v145_n6_p575_Mora

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Citas:

---------- APA ----------
Mora, M.S., Mapelli, F.J., López, A., Gómez Fernández, M.J., Mirol, P.M. & Kittlein, M.J. (2017) . Landscape genetics in the subterranean rodent Ctenomys “chasiquensis” associated with highly disturbed habitats from the southeastern Pampas region, Argentina. Genetica, 145(6), 575-591.
http://dx.doi.org/10.1007/s10709-017-9983-9
---------- CHICAGO ----------
Mora, M.S., Mapelli, F.J., López, A., Gómez Fernández, M.J., Mirol, P.M., Kittlein, M.J. "Landscape genetics in the subterranean rodent Ctenomys “chasiquensis” associated with highly disturbed habitats from the southeastern Pampas region, Argentina" . Genetica 145, no. 6 (2017) : 575-591.
http://dx.doi.org/10.1007/s10709-017-9983-9
---------- MLA ----------
Mora, M.S., Mapelli, F.J., López, A., Gómez Fernández, M.J., Mirol, P.M., Kittlein, M.J. "Landscape genetics in the subterranean rodent Ctenomys “chasiquensis” associated with highly disturbed habitats from the southeastern Pampas region, Argentina" . Genetica, vol. 145, no. 6, 2017, pp. 575-591.
http://dx.doi.org/10.1007/s10709-017-9983-9
---------- VANCOUVER ----------
Mora, M.S., Mapelli, F.J., López, A., Gómez Fernández, M.J., Mirol, P.M., Kittlein, M.J. Landscape genetics in the subterranean rodent Ctenomys “chasiquensis” associated with highly disturbed habitats from the southeastern Pampas region, Argentina. Genetica. 2017;145(6):575-591.
http://dx.doi.org/10.1007/s10709-017-9983-9