Mouse Lemur Phylogeography Revises a Model of Ecogeographic Constraint in Madagascar

Yoder, Anne D.; Heckman, Kellie L.

doi:10.1007/0-387-31710-4_9

Cited by 51 publications

(48 citation statements)

References 29 publications

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“…The underlying process would be that the sharp ecological distinction between eastern and western habitats constitutes a barrier to gene flow, causing a basal split between eastern and western clades in the phylogeography of species of initially wide distribution, eventually leading to speciation. Yoder and Heckman (2006) refer to this hypothesis as the 'ecogeographic constraint'.…”

Section: Introductionmentioning

confidence: 99%

“…However, (Yoder and Heckman (2006)) have recently challenged this traditional perspective on Madagascar's biogeography. They show that in mouse lemurs of the genus Microcebus the primary phylogenetic split, instead of being between east and west, is between a northern and a southern clade.…”

Section: Introductionmentioning

confidence: 99%

“…They show that in mouse lemurs of the genus Microcebus the primary phylogenetic split, instead of being between east and west, is between a northern and a southern clade. Each clade contains several species, spread over the diverse ecological habitats of east and west, without recurrent east-west vicariant patterns at shallower phylogeographic levels (Yoder and Heckman, 2006;Yoder et al, 2000). Deep interspecific north-south splits can also be found in the dwarf chameleons of the genus Brookesia (Raxworthy et al, 2002) and in the colubrid snake genus Madagascarophis (Nagy et al, in press); a vicariant north-south pattern of sister species pairs occurs in several reptile groups, e.g., the boids Acrantophis madagascariensis (north) and Acrantophis dumerili (south), the geckos Uroplatus alluaudi (north) and Uroplatus malahelo (south), and the chameleons Brookesia lolontany (north) and Brookesia nasus (south) (Nussbaum and Raxworthy, 1994;Raxworthy and Nussbaum, 1995;Vences and Glaw, 2003).…”

Section: Introductionmentioning

confidence: 99%

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Geographical patterns of deep mitochondrial differentiation in widespread Malagasy reptiles

Boumans

Vieites

Glaw

et al. 2007

Molecular Phylogenetics and Evolution

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This article was published in an Elsevier journal. The attached copy is furnished to the author for non-commercial research and education use, including for instruction at the author's institution, sharing with colleagues and providing to institution administration.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. AbstractUsing sequences of the mitochondrial 16S rRNA gene, we reconstructed the phylogeography of six widely distributed Malagasy reptiles: two gekkonid lizard species, Phelsuma lineata and Hemidactylus mercatorius; two chameleons, the Calumma brevicorne complex, and Furcifer lateralis; and two skinks, Trachylepis gravenhorstii and Trachylepis elegans. Genetic differentiation among major haplotype lineages was high and in some cases indicates or confirms species status of the divergent populations. Maximum uncorrected sequence divergences were between 2.2% and 8.3% within the various species or species complexes. Haplotype lineages were exclusive to geographic regions, except in the commensal H. mercatorius where in three anthropogenic habitats coexistence of haplotype lineages was observed, possibly due to human translocation. The eastward flowing rivers Mangoro and Mananara may represent barriers to gene flow in the case of three species each. Some species sampled from humid eastern and arid western Madagascar showed no differentiation between populations from these two regions; instead the pattern observed was in several cases more concordant with a differentiation along a north-south axis.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Geographical patterns of deep mitochondrial differentiation in widespread Malagasy reptiles

Boumans

Vieites

Glaw

et al. 2007

Molecular Phylogenetics and Evolution

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“…Its fauna and flora evolved largely in isolation (23), and many taxa are characterized by a high degree of microendemism within Madagascar (24)(25)(26)(27). The native amphibian fauna is constituted by 5 endemic evolutionary lineages of frogs with 100% species-level endemism, 2 of which (the mantellids and the cophyline and scaphiophrynine microhylids) are very species-rich.…”

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confidence: 99%

Vast underestimation of Madagascar's biodiversity evidenced by an integrative amphibian inventory

Vieites

Wollenberg

Andreone

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

590

738

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Amphibians are in decline worldwide. However, their patterns of diversity, especially in the tropics, are not well understood, mainly because of incomplete information on taxonomy and distribution. We assess morphological, bioacoustic, and genetic variation of Madagascar's amphibians, one of the first near-complete taxon samplings from a biodiversity hotspot. Based on DNA sequences of 2,850 specimens sampled from over 170 localities, our analyses reveal an extreme proportion of amphibian diversity, projecting an almost 2-fold increase in species numbers from the currently described 244 species to a minimum of 373 and up to 465. This diversity is widespread geographically and across most major phylogenetic lineages except in a few previously well-studied genera, and is not restricted to morphologically cryptic clades. We classify the genealogical lineages in confirmed and unconfirmed candidate species or deeply divergent conspecific lineages based on concordance of genetic divergences with other characters. This integrative approach may be widely applicable to improve estimates of organismal diversity. Our results suggest that in Madagascar the spatial pattern of amphibian richness and endemism must be revisited, and current habitat destruction may be affecting more species than previously thought, in amphibians as well as in other animal groups. This case study suggests that worldwide tropical amphibian diversity is probably underestimated at an unprecedented level and stresses the need for integrated taxonomic surveys as a basis for prioritizing conservation efforts within biodiversity hotspots.biodiversity estimates ͉ new candidate species ͉ phylogeny ͉ DNA barcoding

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“…The extraordinary proportion of family-level endemism in Madagascar, and the long isolation from non-Malagasy sister lineages, provide a unique opportunity to study the mechanisms driving divergence and diversification in situ 22 . Over the past decade, numerous mechanisms and models have been formulated to explain biodiversity distribution patterns and species diversification in Madagascar, pertaining to environmental stability (or instability), solar energy input, geographic vicariance triggered by topographic or habitat complexity, intrinsic traits of organisms or stochastic effects [23][24][25][26][27][28][29][30][31] . Evidence has supported numerous hypotheses, though this evidence has typically been marshalled from limited taxa or groups of taxa with restricted phylogenetic diversity.…”

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confidence: 99%

A necessarily complex model to explain the biogeography of the amphibians and reptiles of Madagascar

et al. 2014

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Pattern and process are inextricably linked in biogeographic analyses, though we can observe pattern, we must infer process. Inferences of process are often based on ad hoc comparisons using a single spatial predictor. Here, we present an alternative approach that uses mixedspatial models to measure the predictive potential of combinations of hypotheses. Biodiversity patterns are estimated from 8,362 occurrence records from 745 species of Malagasy amphibians and reptiles. By incorporating 18 spatially explicit predictions of 12 major biogeographic hypotheses, we show that mixed models greatly improve our ability to explain the observed biodiversity patterns. We conclude that patterns are influenced by a combination of diversification processes rather than by a single predominant mechanism. A 'one-size-fits-all' model does not exist. By developing a novel method for examining and synthesizing spatial parameters such as species richness, endemism and community similarity, we demonstrate the potential of these analyses for understanding the diversification history of Madagascar's biota.

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Mouse Lemur Phylogeography Revises a Model of Ecogeographic Constraint in Madagascar

Cited by 51 publications

References 29 publications

Geographical patterns of deep mitochondrial differentiation in widespread Malagasy reptiles

Geographical patterns of deep mitochondrial differentiation in widespread Malagasy reptiles

Vast underestimation of Madagascar's biodiversity evidenced by an integrative amphibian inventory

A necessarily complex model to explain the biogeography of the amphibians and reptiles of Madagascar

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