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Citation for Study 11623

Citation title: "Deep intra-island divergence of a montane forest endemic: phylogeography of the Puerto Rican frog Eleutherodactylus portoricensis (Anura: Eleutherodactylidae)".

Study name: "Deep intra-island divergence of a montane forest endemic: phylogeography of the Puerto Rican frog Eleutherodactylus portoricensis (Anura: Eleutherodactylidae)".

This study is part of submission 11613 (Status: Published).

Citation

Barker B.S., Waide R.B., & Cook J. 2011. Deep intra-island divergence of a montane forest endemic: phylogeography of the Puerto Rican frog Eleutherodactylus portoricensis (Anura: Eleutherodactylidae). Journal of Biogeography, .

Authors

• Barker B.S. (submitter) 505-205-4251
• Waide R.B.
• Cook J.

Abstract

Aim Hypotheses proposed for lineage diversification of tropical montane species have rarely been tested within oceanic islands. Our goal was to understand how basin barriers and Pleistocene climatic fluctuations shaped the distribution of diversity in Eleutherodactylus portoricensis (Eleutherodactylidae), a frog endemic to montane rain forests of Puerto Rico. Location The north-eastern (Luquillo) and south-eastern (Cayey) mountains of Puerto Rico. Methods We generated mitochondrial DNA (mtDNA) control region sequences (c. 565 bp) from 144 individual E. portoricensis representing 16 localities, and sequenced 646 bp cytochrome b and 596 bp nuclear DNA (nDNA) rhodopsin exon and intron 1 from a subset of individuals. We conducted a phylogenetic analysis on the mtDNA sequence data and explored population substructure with maximum parsimony networks, a spatial analysis of molecular variance, and pairwise FST analysis. Coalescent simulations were performed to test alternative models of population divergence in response to late Pleistocene interglacial periods. Historical demography was assessed through coalescent analyses and Bayesian skyline plots. Results We found: (1) two highly divergent groups associated with the disjunct Luquillo and Cayey Mountains, respectively; (2) a shallow mtDNA genetic discontinuity across the La Plata Basin within the Cayey Mountains; (3) phylogeographic congruence between nDNA and mtDNA markers; (4) divergence dates for both mtDNA and nDNA pre-dating the Holocene interglacial (c. 10 ka), and nDNA suggesting divergence at the penultimate interglacial (c. 245 ka); and (5) historical demographic stability in both lineages. Main conclusions The low-elevation Caguas Basin is a long-term barrier to gene flow between the two montane frog populations. Measures of genetic diversity for mtDNA were similar in both lineages, but lower nDNA diversity in the Luquillo Mountains lineage suggests infrequent dispersal between the two mountain ranges and colonization by a low-diversity founder population. Population divergence began prior to the Holocene interglacial. Stable population sizes over time indicate a lack of demonstrable demographic response to climatic changes during the last glacial period. This study highlights the importance of topographic complexity in promoting within-island vicariant speciation in the Greater Antilles, and indicates long-term persistence and lineage diversification despite late Pleistocene climatic oscillations.

Keywords

Caribbean, climate change, Eleutherodactylus portoricensis, island biogeography, phylogeography, Puerto Rico

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S11623
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref19798,
  	 author = {Brittany Suzanne Barker and Robert B Waide and Joseph A.  Cook},
  	 title = {Deep intra-island divergence of a montane forest endemic: phylogeography of the Puerto Rican frog Eleutherodactylus portoricensis (Anura: Eleutherodactylidae)},
  	 year = {2011},
  	 keywords = {Caribbean, climate change, Eleutherodactylus portoricensis, island biogeography, phylogeography, Puerto Rico},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Journal of Biogeography},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {
  Aim Hypotheses proposed for lineage diversification of tropical montane species have rarely been tested within oceanic islands. Our goal was to understand how basin barriers and Pleistocene climatic fluctuations shaped the distribution of diversity in Eleutherodactylus portoricensis (Eleutherodactylidae), a frog endemic to montane rain forests of Puerto Rico. 
  
  Location The north-eastern (Luquillo) and south-eastern (Cayey) mountains of Puerto Rico.
  
  Methods We generated mitochondrial DNA (mtDNA) control region sequences (c. 565 bp) from 144 individual E. portoricensis representing 16 localities, and sequenced 646 bp cytochrome b and 596 bp nuclear DNA (nDNA) rhodopsin exon and intron 1 from a subset of individuals. We conducted a phylogenetic analysis on the mtDNA sequence data and explored population substructure with maximum parsimony networks, a spatial analysis of molecular variance, and pairwise FST analysis. Coalescent simulations were performed to test alternative models of population divergence in response to late Pleistocene interglacial periods. Historical demography was assessed through coalescent analyses and Bayesian skyline plots.
  
  Results We found: (1) two highly divergent groups associated with the disjunct Luquillo and Cayey Mountains, respectively; (2) a shallow mtDNA genetic discontinuity across the La Plata Basin within the Cayey Mountains; (3) phylogeographic congruence between nDNA and mtDNA markers; (4) divergence dates for both mtDNA and nDNA pre-dating the Holocene interglacial (c. 10 ka), and nDNA suggesting divergence at the penultimate interglacial (c. 245 ka); and (5) historical demographic stability in both lineages.
  
  Main conclusions The low-elevation Caguas Basin is a long-term barrier to gene flow between the two montane frog populations. Measures of genetic diversity for mtDNA were similar in both lineages, but lower nDNA diversity in the Luquillo Mountains lineage suggests infrequent dispersal between the two mountain ranges and colonization by a low-diversity founder population. Population divergence began prior to the Holocene interglacial. Stable population sizes over time indicate a lack of demonstrable demographic response to climatic changes during the last glacial period. This study highlights the importance of topographic complexity in promoting within-island vicariant speciation in the Greater Antilles, and indicates long-term persistence and lineage diversification despite late Pleistocene climatic oscillations.
  }
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 19798
  AU  - Barker,Brittany Suzanne
  AU  - Waide,Robert B
  AU  - Cook,Joseph A. 
  T1  - Deep intra-island divergence of a montane forest endemic: phylogeography of the Puerto Rican frog Eleutherodactylus portoricensis (Anura: Eleutherodactylidae)
  PY  - 2011
  KW  - Caribbean
  KW  - climate change
  KW  - Eleutherodactylus portoricensis
  KW  - island biogeography
  KW  - phylogeography
  KW  - Puerto Rico
  UR  - http://dx.doi.org/
  N2  - 
  Aim Hypotheses proposed for lineage diversification of tropical montane species have rarely been tested within oceanic islands. Our goal was to understand how basin barriers and Pleistocene climatic fluctuations shaped the distribution of diversity in Eleutherodactylus portoricensis (Eleutherodactylidae), a frog endemic to montane rain forests of Puerto Rico. 
  
  Location The north-eastern (Luquillo) and south-eastern (Cayey) mountains of Puerto Rico.
  
  Methods We generated mitochondrial DNA (mtDNA) control region sequences (c. 565 bp) from 144 individual E. portoricensis representing 16 localities, and sequenced 646 bp cytochrome b and 596 bp nuclear DNA (nDNA) rhodopsin exon and intron 1 from a subset of individuals. We conducted a phylogenetic analysis on the mtDNA sequence data and explored population substructure with maximum parsimony networks, a spatial analysis of molecular variance, and pairwise FST analysis. Coalescent simulations were performed to test alternative models of population divergence in response to late Pleistocene interglacial periods. Historical demography was assessed through coalescent analyses and Bayesian skyline plots.
  
  Results We found: (1) two highly divergent groups associated with the disjunct Luquillo and Cayey Mountains, respectively; (2) a shallow mtDNA genetic discontinuity across the La Plata Basin within the Cayey Mountains; (3) phylogeographic congruence between nDNA and mtDNA markers; (4) divergence dates for both mtDNA and nDNA pre-dating the Holocene interglacial (c. 10 ka), and nDNA suggesting divergence at the penultimate interglacial (c. 245 ka); and (5) historical demographic stability in both lineages.
  
  Main conclusions The low-elevation Caguas Basin is a long-term barrier to gene flow between the two montane frog populations. Measures of genetic diversity for mtDNA were similar in both lineages, but lower nDNA diversity in the Luquillo Mountains lineage suggests infrequent dispersal between the two mountain ranges and colonization by a low-diversity founder population. Population divergence began prior to the Holocene interglacial. Stable population sizes over time indicate a lack of demonstrable demographic response to climatic changes during the last glacial period. This study highlights the importance of topographic complexity in promoting within-island vicariant speciation in the Greater Antilles, and indicates long-term persistence and lineage diversification despite late Pleistocene climatic oscillations.
  
  L3  - 
  JF  - Journal of Biogeography
  VL  - 
  IS  - 
  ER  -