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Toward a Molecular Phylogeny for the Molossidae (Chiroptera) of the Afro-Malagasy Regionno access

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Lamb J. M., Ralph T. M. C., Naidoo T., Taylor P. J., Ratrimomanativo F., Stanley W. T., Goodman S. M.

Acta Chiropterologica

2011

tom 13

nr 1

We present phylogenetic information based on nuclear Rag2 and mitochondrial cytochrome b sequence data for six genera of Molossidae (Chaerephon, Mops, Mormopterus, Otomops, Sauromys, Tadarida) and 18 species, primarily from Africa and the Malagasy region (Madagascar and neighbouring islands), and further include sequences of 12 New World and African taxa sourced from GenBank. There is strong support for the monophyly of the Molossidae included in this study. The Malagasy region taxa Mormopterus jugularis and M. francoismoutoui are supported as a basal clade with an age of≈ 31.2 MYR, and are not monophyletic with the South American M. kalinowskii. Asian Otomops wroughtoni and O. formosus and Afro-Malagasy O. martiensseni and O. madagascariensis form a strongly-supported ≈19.8 MYR-old clade, whose broader relationships among Molossidae are not clearly defined. There is strong support for a ≈ 17.2 MYR-old combined Chaerephon/Mops clade, in which members of these genera show some paraphyly. The monophyly of the genus Tadarida, represented in our analyses by T. brasiliensis from the New World and T.fulminans, T. aegyptiaca and T. teniotis from the Old World, is not upheld, although there is good support for a geographicallydisjunct ≈ 9.8 MYR-old grouping which includes C. jobimena (Madagascar), T. aegyptiaca (Africa) and T. brasiliensis (America). Sauromys is maintained as a monotypic genus, although there is moderate support for its association with T. fulminans and the Chaerephon!Mops clade, the latter of which comprises M. midas, M. leucostigma, M. condylurus, M. bakarii, C. pumilus, C. pusillus, C. leucogaster and C. atsinanana. An ≈ 8.4 MYR-old New World clade comprising representatives of Eumops, Nyctinomops and Molossus was well-supported.

Geographic and phylogeographic variation in Chaerephon leucogaster (Chiroptera: Molossidae) of Magdagascar and the western Indian Ocean islands of Mayotte and Pemba

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Ratrimomanarivo F. H., Goodman S. M., Stanley W. T., Naidoo T., Taylor P. J., Lamb J.

Acta Chiropterologica

2009

tom 11

nr 1

We examine patterns of morphological and genetic variation in Chaerephon leucogaster (family Molossidae) on Madagascar, Mayotte in the Comoros Archipelago, and the offshore Tanzanian island of Pemba. Five external, 10 cranial, and eight dental measurements of animals from different Malagasy populations (grouped according to bioclimatic regions) show differences in the degree of sexual dimorphism and size variation. Further, the population on Mayotte is largely identical in size to those from western Madagascar, and animals from Pemba are notably larger than those from Madagascar and Mayotte. Cytochrome b genetic distances across samples from these islands were low (maximum 0.0035) and animals from Pemba and Mayotte shared cytochrome b haplotypes with Malagasy bats. D-loop data showed some concordance between haplotype distribution, geographical position (latitude and island), and the bioclimatic zones. Animals from Pemba and Mayotte formed a unique D-loop haplotype, which was a minimum of six mutational steps different from Malagasy haplotypes. Within Madagascar, certain haplotypes were exclusive to the north (13°S latitude band) and arid southwest (22° and 23°S latitudes) regions. In general, there was no clear concordance between variation in haplotype distribution, latitude, altitude or gender. Where concordance occurred, the genetic distances involved were not sufficiently high to warrant the definition of new taxonomic units. Hence, based on current genetic information, patterns of morphological variation of the Madagascar populations and differences between Pemba and Mayotte/Madagascar are best explained as inter-population variation and may be adaptive, associated with different climatic regimes and associated ecological variables.

Ograniczanie wyników

2 Acta Chiropterologica

2 Goodman S. M.

2 Naidoo T.

2 Stanley W. T.

2 Taylor P. J.

1 Lamb J.

1 Lamb J. M.

1 Ralph T. M. C.

1 Ratrimomanarivo F. H.

1 Ratrimomanativo F.

1 2011

1 2009

Wyniki wyszukiwania

Toward a Molecular Phylogeny for the Molossidae (Chiroptera) of the Afro-Malagasy Regionno access

Geographic and phylogeographic variation in Chaerephon leucogaster (Chiroptera: Molossidae) of Magdagascar and the western Indian Ocean islands of Mayotte and Pemba