Sokoine University of Agriculture

Genetic structure and diversity of the black and rufous sengi in Tanzanian coastal forests

Show simple item record Sabuni, C. A. Van Houtte, N. Gryseels, S. Maganga, S. L. S. Makundi, Rhodes H. Leirs, H. Goüy de Bellocq, J. 2018-07-23T05:35:57Z 2018-07-23T05:35:57Z 2016
dc.identifier.issn 0952-8369
dc.description Journal of Zoology, 2016; 300: 305-313 en_US
dc.description.abstract The black and rufous sengi Rhynchocyon petersi is restricted to the Eastern ArcMountains and coastal forests of East Africa and considered vulnerable because ofhabitat fragmentation and degradation. Coastal forests are believed to have beenisolated from each other for thousands of years due to climatic changes. SinceR. petersi is described as strongly dependent on its forest habitat, we hypothesizedthat R. petersi from different forests would show genetic divergence. We investi-gated the genetic structure and diversity of this species in four coastal forests inTanzania using eight microsatellites and cytochrome b sequences. In total, 45 indi-viduals were captured after strenuous sampling efforts. For comparative purposeswe also sequenced the cytochrome b of 57 individuals from a sympatric rodent for-est species, Beamys hindei. The results indicate extant R. petersi have descendedfrom a single population of high effective size (Ne) with no forest-distinctive sig-nal. In contrast, B. hindei is more genetically structured: Although the most com-mon haplotype is found in the three closest forests, each forest harbours privatehaplotypes. Moreover, B. hindei Ne appeared 10 times smaller than R. petersi inZaraninge forest. While B. hindei results are consistent with the scenario of long-term isolation of coastal forests, the R. petersi are not. We suggest R. petersi mayless depend on forest habitat than previously suspected, consistent with anecdotalreports of sengis nesting in intervening agricultural habitat. From a conservationviewpoint, this sengi species therefore appears robust to the current spatial andtemporal scale of habitat fragmentation. en_US
dc.language.iso en en_US
dc.publisher Journal of Zoology en_US
dc.subject Rhynchocyon petersi en_US
dc.subject Beamys hindei en_US
dc.subject Genetic diversity; en_US
dc.subject Vulnerable; en_US
dc.subject Conservation genetics en_US
dc.subject Coastal forest en_US
dc.subject Habitat fragmentation en_US
dc.title Genetic structure and diversity of the black and rufous sengi in Tanzanian coastal forests en_US
dc.type Article en_US
dc.url en_US

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