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Coevolution of diet and prey-specific venom activity supports the role of selection in snake venom evolution
- A. Barlow, C. Pook, R. Harrison, W. Wüster
- BiologyProceedings of the Royal Society B: Biological…
- 7 July 2009
Examination of stomach and hindgut contents revealed extreme variation between the major clades of Echis in the proportion of arthropod prey consumed, providing strong evidence that variation in snake venom composition results from adaptive evolution driven by natural selection for different diets.
Phylogeography of the widespread African puff adder (Bitis arietans) reveals multiple Pleistocene refugia in southern Africa
This study reveals a complex history of refugial isolation and secondary expansion for puff adders and a mosaic of isolated refugia in southern Africa and identifies key differences between the processes that drove isolation in B. arietans and those hypothesized for sympatric savannah mammals.
The future of ancient DNA: Technical advances and conceptual shifts
In this review, important areas of future technical and conceptual progress are highlighted and research topics in the rapidly growing field of palaeogenomics are discussed.
Venom lethality and diet: differential responses of natural prey and model organisms to the venom of the saw-scaled vipers (Echis).
Ancient habitat shifts and organismal diversification are decoupled in the African viper genus Bitis (Serpentes: Viperidae)
- A. Barlow, W. Wüster, Christopher M. R. Kelly, W. Branch, T. Phelps, K. Tolley
- Environmental Science, BiologyJournal of Biogeography
- 11 May 2019
This hypothesis that the expansion of open habitats during the mid‐Miocene has been hypothesized as a driver of allopatric speciation for many African taxa is examined using a genus of African viperid snakes (Bitis) with both open habitat and forest‐dwelling representatives.
Ancient DNA reveals differences in behaviour and sociality between brown bears and extinct cave bears
The complete mitochondrial genomes of extinct Late Pleistocene cave bears and middle Holocene brown bears that each inhabited multiple geographically proximate caves in northern Spain are investigated and it is found that, although most caves were occupied simultaneously, each cave almost exclusively contains a unique lineage of closely related haplotypes.
Complex Admixture Preceded and Followed the Extinction of Wisent in the Wild
Analysis of aligned genomes supports the division of wisent into two previously recognised subspecies, but almost half of the genomic alignment contradicts this population history as a result of incomplete lineage sorting and admixture.
Evolutionary History of Saber-Toothed Cats Based on Ancient Mitogenomics
Partial genomic survival of cave bears in living brown bears
- A. Barlow, J. Cahill, M. Hofreiter
- Biology, Environmental ScienceNature Ecology & Evolution
- 27 July 2018
It is found that segments of cave bear DNA still persist in the genomes of living brown bears, and despite cave bears going extinct during the Last Glacial Maximum, extant brown bears maintain a genomic contribution from cave bears.
Convergent evolution of pain-inducing defensive venom components in spitting cobras
Using gene, protein, and functional analyses, it is shown that the three spitting lineages possess venoms characterized by an up-regulation of phospholipase A2 (PLA2) toxins, which potentiate the action of preexisting venom cytotoxins to activate mammalian sensory neurons and cause enhanced pain.