168 research outputs found
Fishes of the Asian cyprinid genus Chagunius
http://deepblue.lib.umich.edu/bitstream/2027.42/57148/1/OP712.pd
Discherodontus, a new genus of cyprinid fishes from southeastern Asia
http://deepblue.lib.umich.edu/bitstream/2027.42/57154/1/OP718.pd
A review of the sisorid catfish genus Oreoglanis (Siluriformes: Sisoridae) with descriptions of four new species
http://deepblue.lib.umich.edu/bitstream/2027.42/57168/1/OP732.pd
Phylogeography of the Mekong mud snake (Enhydris subtaeniata): the biogeographic importance of dynamic river drainages and fluctuating sea levels for semiaquatic taxa in Indochina
During the Cenozoic, Southeast Asia was profoundly affected by plate tectonic events, dynamic river systems, fluctuating sea levels, shifting coastlines, and climatic variation, which have influenced the ecological and evolutionary trajectories of the Southeast Asian flora and fauna. We examined the role of these paleogeographic factors on shaping phylogeographic patterns focusing on a species of semiaquatic snake, Enhydris subtaeniata (Serpentes: Homalopsidae) using sequence data from three mitochondrial fragments (cytochrome b, ND4, and ATPase—2785 bp). We sampled E. subtaeniata from seven locations in three river drainage basins that encompassed most of this species’ range. Genetic diversities were typically low within locations but high across locations. Moreover, each location had a unique suite of haplotypes not shared among locations, and pairwise φST values (0.713–0.998) were highly significant between all location pairs. Relationships among phylogroups were well resolved and analysis of molecular variance (AMOVA) revealed strong geographical partitioning of genetic variance among the three river drainage basins surveyed. The genetic differences observed among the populations of E. subtaeniata were likely shaped by the Quaternary landscapes of Indochina and the Sunda Shelf. Historically, the middle and lower Mekong consisted of strongly dissected river valleys separated by low mountain ranges and much of the Sunda Shelf consisted of lowland river valleys that served to connect faunas associated with major regional rivers. It is thus likely that the contemporary genetic patterns observed among populations of E. subtaeniata are the result of their histories in a complex terrain that created abundant opportunities for genetic isolation and divergence yet also provided lowland connections across now drowned river valleys
First report of the alien species Trichopodus trichopterus (Pallas, 1770) in the state of Ceará, Brazil
Vicariance or dispersal? Historical biogeography of three Sunda shelf murine rodents ( Maxomys surifer , Leopoldamys sabanus and Maxomys whiteheadi )
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75628/1/j.1095-8312.2004.00281.x.pd
Unraveling a 146 Years Old Taxonomic Puzzle: Validation of Malabar Snakehead, Species-Status and Its Relevance for Channid Systematics and Evolution
The current distribution of C. diplogramma and C. micropeltes is best explained by vicariance. The significant variation in the key taxonomic characters and the results of the molecular marker analysis points towards an allopatric speciation event or vicariant divergence from a common ancestor, which molecular data suggests to have occurred as early as 21.76 million years ago. The resurrection of C. diplogramma from the synonymy of C. micropeltes has hence been confirmed 146 years after its initial description and 134 years after it was synonymised, establishing it is an endemic species of peninsular India and prioritizing its conservation value
Ultimobranchial gland of freshwater catfish, Heteropneustes fossilis, in response to calcitonin administration
Molecular phylogeny of European and African Barbus and their West Asian relatives in the Cyprininae (Teleostei: Cypriniformes) and orogenesis of the Qinghai-Tibetan Plateau
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