Fine scale gene flow and individual movements among subpopulations of Centrolene prosoblepon (Anura: Centrolenidae)
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| Format: | Artículo científico |
| Language: | en |
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Universidad de Costa Rica
2008
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| _version_ | 1876434551523246080 |
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| author | Jeanne M. Robertson |
| author_facet | Jeanne M. Robertson |
| contents | Fine scale gene flow and individual movements among subpopulations of Centrolene prosoblepon (Anura: Centrolenidae) Jeanne M. Robertson Karen R. Lips Edward J. Heist Biología mark dispersal gene flow recapture Neotropical Dispersal capabilities determine and maintain local gene flow, and this has implications for population persistence and/or recolonization following environmental perturbations (natural or anthropogenic), disease outbreaks, or other demographic collapses. To predict recolonization and understand dispersal capacity in a stream-breeding frog, we examined individual movement patterns and gene flow among four subpopulations of the Neotropical glassfrog, Centrolene prosoblepon, at a mid-elevation cloud forest site at El Copé, Panama. We measured male movement directly during a two year mark-recapture study, and indirectly with gene flow estimates from mitochondrial DNA sequences (mtDNA). Individuals of this species showed strong site fidelity: over two years, male frogs in all four headwater streams moved very little (mean = 2.33 m; mode = 0 m). Nine individuals changed streams within one or two years, moving 675-1 108 m. For those males moving more than 10 m, movement was biased upstream (p < 0.001). Using mtDNA ND1 gene sequences, we quantified gene flow within and among headwater streams at two spatial scales: among headwater streams within two adjacent watersheds (2.5 km²) and among streams within a longitudinal gradient covering 5.0 km². We found high gene flow among headwater streams (<IMG SRC="/img/revistas/rbt/v56n1/signo.jpg" WIDTH=23 HEIGHT=17>ST = 0.007, p = 0.325) but gene flow was more limited across greater distances (<IMG SRC="/img/revistas/rbt/v56n1/signo.jpg" WIDTH=28 HEIGHT=15>CT = 0.322, p = 0.065), even within the same drainage network. Lowland populations of C. prosoblepon potentially act as an important source of colonists for upland populations in this watershed. Rev. Biol. Trop. 56 (1): 13-26. Epub 2008 March 31. 2008 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44918831002 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.56 |
| format | Artículo científico |
| id | redalyc_44918831002 |
| institution | Redalyc |
| language | en |
| publishDate | 2008 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Fine scale gene flow and individual movements among subpopulations of Centrolene prosoblepon (Anura: Centrolenidae) Jeanne M. Robertson Biología mark dispersal gene flow recapture Neotropical Fine scale gene flow and individual movements among subpopulations of Centrolene prosoblepon (Anura: Centrolenidae) Jeanne M. Robertson Karen R. Lips Edward J. Heist Biología mark dispersal gene flow recapture Neotropical Dispersal capabilities determine and maintain local gene flow, and this has implications for population persistence and/or recolonization following environmental perturbations (natural or anthropogenic), disease outbreaks, or other demographic collapses. To predict recolonization and understand dispersal capacity in a stream-breeding frog, we examined individual movement patterns and gene flow among four subpopulations of the Neotropical glassfrog, Centrolene prosoblepon, at a mid-elevation cloud forest site at El Copé, Panama. We measured male movement directly during a two year mark-recapture study, and indirectly with gene flow estimates from mitochondrial DNA sequences (mtDNA). Individuals of this species showed strong site fidelity: over two years, male frogs in all four headwater streams moved very little (mean = 2.33 m; mode = 0 m). Nine individuals changed streams within one or two years, moving 675-1 108 m. For those males moving more than 10 m, movement was biased upstream (p < 0.001). Using mtDNA ND1 gene sequences, we quantified gene flow within and among headwater streams at two spatial scales: among headwater streams within two adjacent watersheds (2.5 km²) and among streams within a longitudinal gradient covering 5.0 km². We found high gene flow among headwater streams (<IMG SRC="/img/revistas/rbt/v56n1/signo.jpg" WIDTH=23 HEIGHT=17>ST = 0.007, p = 0.325) but gene flow was more limited across greater distances (<IMG SRC="/img/revistas/rbt/v56n1/signo.jpg" WIDTH=28 HEIGHT=15>CT = 0.322, p = 0.065), even within the same drainage network. Lowland populations of C. prosoblepon potentially act as an important source of colonists for upland populations in this watershed. Rev. Biol. Trop. 56 (1): 13-26. Epub 2008 March 31. 2008 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44918831002 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.56 |
| title | Fine scale gene flow and individual movements among subpopulations of Centrolene prosoblepon (Anura: Centrolenidae) |
| topic | Biología mark dispersal gene flow recapture Neotropical |
| url | https://www.redalyc.org/articulo.oa?id=44918831002 |