Phylogeography and conservation of the endemic Hispaniolan Palm-Tanagers (Aves: Phaenicophilus)

Sly, Nicholas; Townsend, Andrea K.; Rimmer, Christopher C.; Townsend, Jason M.; Latta, Steven C.; Lovette, Irby J.

doi:10.1007/s10592-010-0098-4

Cited by 17 publications

(23 citation statements)

References 46 publications

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“…Unique haplotypes and alleles have been archived in Genbank for each genus: Calyptophilus (accession numbers , , ; Townsend et al. 2007), Phaenicophilus (; Sly et al. 2010), Microligea (, , ), Xenoligea (, , , ), Todus (, , ), Myadestes (), Spindalis () and Elaenia ().…”

Section: Resultsmentioning

confidence: 99%

“…Haplotypes from the Tiburon Peninsula ( P. poliocephalus ) are coloured dark red, South paleo‐island localities are reds to browns, and North paleo‐island localities are greens and blues. Phaenicophilus networks are redrawn from Sly et al. 2010.…”

Section: Resultsmentioning

confidence: 99%

“…2004; Gifford & Larson 2008; birds: Todus angustirostris —Ricklefs & Bermingham 1997; Overton & Rhoads 2004; Calyptophilus —Townsend et al. 2007; Phaenicophilus —Sly et al. 2010).…”

Section: Methodsmentioning

confidence: 99%

“…Haplotype networks are redrawn from and nucleotide variation statistics are reported from these previous sources. Divergence time estimates for Phaenicophilus are reported from Sly et al. (2010).…”

Section: Methodsmentioning

confidence: 99%

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Ancient islands and modern invasions: disparate phylogeographic histories among Hispaniola’s endemic birds

Sly

Townsend

Rimmer³

et al. 2011

Molecular Ecology

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With its large size, complex topography and high number of avian endemics, Hispaniola appears to be a likely candidate for the in situ speciation of its avifauna, despite the worldwide rarity of avian speciation within single islands. We used multilocus comparative phylogeography techniques to examine the pattern and history of divergence in 11 endemic birds representing potential within-island speciation events. Haplotype and allele networks from mitochondrial ND2 and nuclear intron loci reveal a consistent pattern: phylogeographic divergence within or between closely related species is correlated with the likely distribution of ancient sea barriers that once divided Hispaniola into several smaller paleo-islands. Coalescent and mitochondrial clock dating of divergences indicate species-specific response to different geological events over the wide span of the island's history. We found no evidence that ecological or topographical complexity generated diversity, either by creating open niches or by restricting long-term gene flow. Thus, no true within-island speciation appears to have occurred among the species sampled on Hispaniola. Divergence events predating the merging of Hispaniola's paleo-island blocks cannot be considered in situ divergence, and postmerging divergence in response to episodic island segmentation by marine flooding probably represents in situ vicariance or interarchipelago speciation by dispersal. Our work highlights the necessity of considering island geologic history while investigating the speciation-area relationship in birds and other taxa.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…2004; Gifford & Larson 2008; birds: Todus angustirostris —Ricklefs & Bermingham 1997; Overton & Rhoads 2004; Calyptophilus —Townsend et al. 2007; Phaenicophilus —Sly et al. 2010).…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Ancient islands and modern invasions: disparate phylogeographic histories among Hispaniola’s endemic birds

Sly

Townsend

Rimmer³

et al. 2011

Molecular Ecology

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“…These large islands have had impressive within‐island speciation in other lineages, such as Anolis lizards (Losos, ) and Eleutherodactylus frogs (Heinicke, Duellman, & Hedges, ). However, only sister pairs in two genera, Phaenicophilus ( P. palmarum , P. poliocephalus ) and Calyptophilus ( C. tertius , C. frugivorus ), are known to occur in the same island (Hispaniola), and apparently without within‐island speciation (Sly et al., ). Possible explanations for this lack of Caribbean radiation include: (a) extrinsic factors, such as competition with other avian lineages, and (b) intrinsic factors, such as a lack of variability in traits that would promote rapid radiation (e.g., bill morphology).…”

Section: Discussionmentioning

confidence: 99%

The Tortoise and the Finch: Testing for island effects on diversification using two iconic Galápagos radiations

Román‐Palacios

Wiens

2018

Journal of Biogeography

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Aims Islands are widely recognized as natural laboratories for evolutionary studies, but many questions about evolution on islands remain unresolved. Here we address two general questions from a macroevolutionary perspective. First, do lineages on islands have increased diversification rates relative to mainland lineages? Second, does the same geographical context (e.g., same archipelago) have similar effects on diversification in unrelated groups? We focused on Darwin's finches and Galápagos tortoises, two endemic radiations from the Galápagos Islands, and the larger families in which they are embedded. Location Global. Methods We estimated a new time‐calibrated phylogeny for tortoises (Testudinidae). Then, we examined their macroevolutionary patterns and compared them to those of Darwin's finches and relatives (Thraupidae), using a published thraupid tree. Specifically, we estimated and compared diversification rates between islands and the mainland and between the Galapagos Islands and all other regions, using clade‐based and species‐based approaches. Results Contrary to expectations, occurrence on islands in general did not significantly increase diversification rates in tanagers or tortoises. However, occurrence in the Galápagos Islands in particular was associated with increased speciation and diversification rates, and explained ~28% of the variation in diversification rates for thraupids and ~46% for testudinids. Both Darwin's finches and Galápagos tortoises were unique within each family in exhibiting the highest diversification rates. The congruence of these macroevolutionary patterns between both radiations supports a strong “place‐dependent” effect on diversification associated with the Galápagos. Finally, we found that Darwin's finches diversified ~2–8 times faster than Galápagos tortoises. Main conclusions Our results show that occurring on islands in general did not increase diversification rates in these clades, but occurrence in the Galápagos did. We also show that dramatic local‐scale differences in diversification rates between clades in the Galápagos parallel global‐scale differences in diversification rates between these families and between birds and turtles overall.

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Long‐term demographic decline and late glacial divergence in a Californian paleoendemic: Sequoiadendron giganteum (giant sequoia)

Dodd

DeSilva

2016

Ecology and Evolution

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Mediterranean ecosystems comprise a high proportion of endemic taxa whose response to climate change will depend on their evolutionary origins. In the California flora, relatively little attention has been given to the evolutionary history of paleoendemics from a molecular perspective, yet they number among some of the world's most iconic plant species. Here, we address questions of demographic change in Sequoiadendron giganteum (giant sequoia) that is restricted to a narrow belt of groves in the Sierra Nevada Mountains. We ask whether the current distribution is a result of northward colonization since the last glacial maximum (LGM), restriction of a broader range in the recent past (LGM) or independent colonizations in the deeper past. Genetic diversity at eleven microsatellite loci decreased with increasing latitude, but partial regressions suggested this was a function of smaller population sizes in the north. Disjunct populations north of the Kings River were divergent from those south of the Kings River that formed a single cluster in Bayesian assignment tests. Demographic inferences supported a demographic contraction just prior to the LGM as the most likely scenario for the current disjunct range of the species. This contraction appeared to be superimposed upon a long-term decline in giant sequoia over the last 2 million years, associated with increasing aridity due to the Mediterranean climate. Overall, low genetic diversity, together with competition in an environment to which giant sequoia is likely already poorly adapted, will pose major constraints on its success in the face of increasing aridity.

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Phylogeography and conservation of the endemic Hispaniolan Palm-Tanagers (Aves: Phaenicophilus)

Cited by 17 publications

References 46 publications

Ancient islands and modern invasions: disparate phylogeographic histories among Hispaniola’s endemic birds

Ancient islands and modern invasions: disparate phylogeographic histories among Hispaniola’s endemic birds

The Tortoise and the Finch: Testing for island effects on diversification using two iconic Galápagos radiations

Long‐term demographic decline and late glacial divergence in a Californian paleoendemic: Sequoiadendron giganteum (giant sequoia)

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