Evolutionary History of the Grey-Faced Sengi, Rhynchocyon udzungwensis, from Tanzania: A Molecular and Species Distribution Modelling Approach

@article{Lawson2013EvolutionaryHO,
  title={Evolutionary History of the Grey-Faced Sengi, Rhynchocyon udzungwensis, from Tanzania: A Molecular and Species Distribution Modelling Approach},
  author={Lucinda P Lawson and Cristiano Vernesi and Silvia Ricci and Francesco Rovero},
  journal={PLoS ONE},
  year={2013},
  volume={8}
}
Rhynchocyon udzungwensis is a recently described and poorly understood sengi (giant elephant-shrew) endemic to two small montane forests in Southern Tanzania, and surrounded in lower forests by R. cirnei reichardi. In this study, we investigate the molecular genetic relationship between R. udzungwensis and R. c. reichardi, and the possible role that shifting species distributions in response to climate fluctuations may have played in shaping their evolutionary history. Rhynchocyon udzungwensis… Expand
Unraveling elephant shrews: phylogenetic relationships and unexpected introgression among giant sengis.
TLDR
The results suggest higher levels of hybridization among giant sengi species than previously recognized, but also highlight the need for further genome-wide analysis and increased spatial sampling to clarify the many aspects of diversification and introgression in this group. Expand
Reconstructing the molecular phylogeny of giant sengis (Macroscelidea; Macroscelididae; Rhynchocyon).
TLDR
These analyses support the current morphology-based taxonomy of the giant sengi genus, with each recognized species forming a monophyletic clade, but propose elevating R. c. Expand
Genetic structure and diversity of the black and rufous sengi in Tanzanian coastal forests
TLDR
The genetic structure and diversity of this species in four coastal forests in Tanzania using eight microsatellites and cytochrome b sequences suggest R. petersi may less depend on forest habitat than previously suspected, consistent with anecdotal reports of sengis nesting in intervening agricultural habitat. Expand
Distribution of sengis in the Horn of Africa
TLDR
The Somali sENGi is thought to be morphologically closely related to the rufous sengi, Elephantulus rufescens, which also occurs in the Horn of Africa, and the new data presented here expand the distribution, but still support the species’ occurrence in stony arid habitats. Expand
Targeted vertebrate surveys enhance the faunal importance and improve explanatory models within the Eastern Arc Mountains of Kenya and Tanzania
Aim Detailed knowledge of species distributions, endemism patterns and threats is critical to site prioritization and conservation planning. However, data from biodiversity inventories are stillExpand
Jonathan Kingdon and the East African Forests
  • C. Groves
  • Geography
  • Journal of East African Natural History
  • 2015
ABSTRACT Jonathan Kingdon, 45 years ago, first pointed out the special nature of the East African coastal and montane forests, that a number of mammals are endemic to these forests, and that they areExpand
Combustion Behavior of Algal Biomass: Carbon Release, Nitrogen Release, and Char Reactivity
Recent focus on algae biomass as an alternative energy source can be attributed to building pressure for conservation of dwindling fossil fuels and reduced greenhouse gas emissions. Both micro- andExpand
Genetic populations and virulence factors of Helicobacter pylori.
TLDR
This review article summarizes the most recent findings on H. pylori virulence factors and population genetics and shows high genetic diversity and co-evolution with human hosts. Expand

References

SHOWING 1-10 OF 85 REFERENCES
Phylogenetic relationships of elephant-shrews (Afrotheria, Macroscelididae)
TLDR
A relaxed Bayesian dating approach supports the hypothesis that an arid-adapted Macroscelidinae lineage dispersed from east Africa at ∼11.5 MYA via an African arid corridor to south-western Africa and indicates that Elephantulus is paraphyletic, and that Petrodromus andMacroscelides should be subsumed in Elephantulus. Expand
Why is there discordant diversity in sengi (Mammalia: Afrotheria: Macroscelidea) taxonomy and ecology?
TLDR
The seventeen species of sengis or elephant-shrews form a well-defined clade of mammals endemic to Africa that occupy the extremes of terrestrial habitats, from coastal deserts to montane forests, resulting in low taxonomic diversity. Expand
Phylogeny and Taxonomy of the Round-Eared Sengis or Elephant-Shrews, Genus Macroscelides (Mammalia, Afrotheria, Macroscelidea)
TLDR
Based upon corroborating genetic data, morphological data, near sympatry with no evidence of gene flow, and differences in habitat use, these two forms are elevated to full species of round-eared sengis. Expand
A new species of giant sengi or elephant‐shrew (genus Rhynchocyon) highlights the exceptional biodiversity of the Udzungwa Mountains of Tanzania
TLDR
A new species of sengi, or elephant-shrew, is described in the northern Udzungwa Mountains of Tanzania in 2005, which is a significant contribution to the systematics of this small order of mammals. Expand
GENETIC AND MORPHOLOGICAL EVIDENCE FOR TWO SPECIES IN THE UDZUNGWA FOREST PARTRIDGE XENOPERDIX UDZUNGWENSIS
TLDR
Coalescent models suggest that no gene flow is taking place between the Udzungwa and Rubeho Highlands and that divergence between the two taxa took place about 200 000 years before present. Expand
A species tree for the Australo-Papuan Fairy-wrens and allies (Aves: Maluridae).
TLDR
This study shows that ILS is common at the family level in birds yet, despite this, species tree methods converge on broadly similar results for this family. Expand
The ubiquitous mountain hare mitochondria: multiple introgressive hybridization in hares, genus Lepus
TLDR
The phylogenetic inference reveals the presence of L. timidus-like mtDNA in several other hare species in Asia and North America, suggesting that the mitochondrial introgression observed in Iberia might be generalized and discourage attempts to revise hare taxonomy based solely on mtDNA. Expand
The Taxonomic Status of Giant Sengis (Genus Rhynchocyon) in Mozambique
TLDR
Based on a comparison of pelage patterns and colouration, features that are currently used to distinguish taxa in the genus Rhynchocyon, specimens from all of coastal Mozambique show minor variation, but are similar enough to indicate that they all are referable to R. c. Expand
Illumination of cryptic species boundaries in long-tailed shrew tenrecs (Mammalia: Tenrecidae; Microgale), with new insights into geographic variation and distributional constraints
TLDR
The results of this study suggest that certain species pairs, previously assumed to be single species occupying broad elevational ranges, are actually reproductively isolated units that are partitioning their environment along elevational lines. Expand
Late Pleistocene Potential Distribution of the North African Sengi or Elephant-Shrew Elephantulus rozeti (Mammalia: Macroscelidea)
TLDR
This work used ecological niche modelling based on current climatic datasets and known occurrence points to develop models of present-day potential distributions of E. rozeti and related taxa and indicates that distributional patterns and ecological characteristics are consistent with a more recent, post-Pleistocene vicariance across an increasingly arid Sahara. Expand
...
1
2
3
4
5
...