The rodent fauna of Tanzania: a cytotaxonomic report from the Maasai Steppe (1999)

Fadda, Carlo; Castiglia, Riccardo; Senczuk, Gabriele; Corti, Marco; Machang’u, Robert S.; Makundi, Rhodes H.; Scanzani, A.; Tesha, Protas; Capanna, W. V. E.

doi:10.1007/bf02904520

Rend. Fis. Acc. Lincei

2001

DOI: 10.1007/bf02904520

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The rodent fauna of Tanzania: a cytotaxonomic report from the Maasai Steppe (1999)

Carlo Fadda

Riccardo Castiglia

Gabriele Senczuk

et al.

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Cited by 6 publications

References 32 publications

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Chromosomal evolution in the African Arvicanthine rats (Murinae, Rodentia): comparative cytogenetics of Lemniscomys (L. zebra, L. rosalia, L. striatus) and Arvicanthis dembeensis

Castiglia¹,

Fadda²,

Corti³

et al. 2002

J Zoological System

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Chromosome banding analysis (G‐ and C‐ bands) of two species of Lemniscomys from Tanzania, Lemniscomyszebra and Lemniscomysrosalia, and of a third species from Benin, Lemniscomysstriatus was carried out to trace the pattern of chromosomal evolution of the genus. The G‐banding pattern comparison makes it possible to identify chromosomal rearrangements between the karyotypes. The two Tanzanian species (L. rosalia 2n=54, FNa=62; and L. zebra 2n=54, FNa=58) differ due to two pericentric inversions. A X polymorphism was detected in both species. Furthermore, L. rosalia shows two forms of the Y chromosome. The banding pattern of L. striatus (2n=44; FNa=68) from Benin allows identification of five Robertsonian fusions with respect to L. zebra. Moreover L. rosalia is characterized by a karyotype which is different from the one described for South Africa (2n=48; FNa=62), and therefore it should be considered as a different species. Comparative banding analysis with another Arvicanthine species (Arvicanthis dembeensis, 2n=62, FNa=62) showed complete homology in G‐bands between the two genera, the differences involving tandem fusions, pericentric inversions, and Robertsonian fusions.

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Chromosomal evolution in the African Arvicanthine rats (Murinae, Rodentia): comparative cytogenetics of Lemniscomys (L. zebra, L. rosalia, L. striatus) and Arvicanthis dembeensis

Castiglia¹,

Fadda²,

Corti³

et al. 2002

J Zoological System

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Distribution and ecology of lesser pouched rat, Beamys hindei, in Tanzanian coastal forests

Sabuni

Sluydts

Mulungu

et al. 2015

Integrative Zoology

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The lesser pouched rat, Beamys hindei, is a small rodent that is patchily distributed in the Eastern Arc Mountains and coastal forests in East Africa. The ecology of this species and its current distribution in coastal forests is not well known. Therefore, we conducted a study in selected coastal forests to assess the current distribution of the species and to investigate the population ecology in terms of abundance fluctuations and demographic patterns. Assessments of the species distribution were conducted in 5 forests through trapping with Sherman live traps. Data on ecology were obtained from monthly capture-mark-recapture studies conducted for 5 consecutive nights per month in two 1 ha grids set in Zaraninge Forest over a 2-year period. The results indicate the presence of B. hindei in 3 forests where it was not previously recorded. The population abundance estimates ranged from 1 to 40 animals per month, with high numbers recorded during rainy seasons. Reproduction patterns and sex ratios did not differ between months. Survival estimates were not influenced by season, and recruitment was low, with growth rate estimates of 1 animal per month. These estimates suggest a stable population of B. hindei in Zaraninge Forest. Further studies are recommended to establish the home range, diet and burrowing behavior of the species in coastal forests in East Africa.

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Chromosomal and molecular characterization of Aethomys kaiseri from Zambia and Aethomys chrysophilus from Tanzania (Rodentia, Muridae)

et al. 2004

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Aethomys is a common and widespread rodent genus in the African savannas and grasslands. However, its systematics and taxonomy are still unclear as no study has covered the entire range. In fact it might not be a monophyletic genus and perhaps should be split into two subgenera, Micaelamys and Aethomys. In this paper, we present findings based on the cytogenetics and the entire cytochrome b sequence of two species from Zambia (A. kaiseri ) and Tanzania (A. chrysophilus), and we compare them with the sequences of a South African species (A. namaquensis) and other allied muroid genera. Comparison of the banded chromosomes revealed complete G-band homology between the autosomes of the two species. However, the X and Y chromosomes clearly differ in size and in C-and G-banding, being much larger in A. kaiseri.Comparison of the cytochrome b sequences places the separation between A. kaiseri and A. chrysophilus at 4.49 Mya, a period of intense speciation in other African muroids. The resulting phylogeny strongly supports the idea of a paraphyletic group, suggesting the need to elevate the previously described subgenera to the genus rank.

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The rodent fauna of Tanzania: a cytotaxonomic report from the Maasai Steppe (1999)

Cited by 6 publications

References 32 publications

Chromosomal evolution in the African Arvicanthine rats (Murinae, Rodentia): comparative cytogenetics of Lemniscomys (L. zebra, L. rosalia, L. striatus) and Arvicanthis dembeensis

Chromosomal evolution in the African Arvicanthine rats (Murinae, Rodentia): comparative cytogenetics of Lemniscomys (L. zebra, L. rosalia, L. striatus) and Arvicanthis dembeensis

Distribution and ecology of lesser pouched rat, Beamys hindei, in Tanzanian coastal forests

Chromosomal and molecular characterization of Aethomys kaiseri from Zambia and Aethomys chrysophilus from Tanzania (Rodentia, Muridae)

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