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The biodiversity and biogeography of the free-living nematode genera Desmodora and Desmodorella (family Desmodoridae) at both sides of the Scotia Arc
Ingels, J.; Vanhove, S.; De Mesel, I.G.; Vanreusel, A. (2006). The biodiversity and biogeography of the free-living nematode genera Desmodora and Desmodorella (family Desmodoridae) at both sides of the Scotia Arc. Polar Biol. 29(11): 936-949. dx.doi.org/10.1007/s00300-006-0135-4
In: Polar Biology. Springer-Verlag: Berlin; Heidelberg. ISSN 0722-4060; e-ISSN 1432-2056, meer
Peer reviewed article  
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Trefwoorden
    Biodiversity
    Geography > Biogeography
    PSW, Scotia Sea
    Desmodora de Man, 1889 [WoRMS]; Desmodora (Desmodorella) Cobb, 1933 [WoRMS]; Nematoda [WoRMS]
    Scotia Sea [Marine Regions]
    Marien/Kust
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Abstract
    Samples taken at two stations in the northern and southern parts of the Scotia Arc, at depths of 277 and 307 m, respectively, were analysed for metazoan meiofauna with special attention to the nematodes. Identification to species level was performed for two closely related subdominant nematode genera (Desmodora and Desmodorella) in samples from the two Scotia Arc stations and in other available samples from adjacent areas (Magellan Region, Drake Passage, Weddell Sea). Seven Desmodora species and three Desmodorella species were found, of which, respectively five and two species are new to science. The Scotia Arc stations show relatively high densities and average diversity on meiofauna and nematode level compared to adjacent areas. The distribution patterns of the various Desmodora and Desmodorella species suggest the Scotia Arc as a shallow bridge and a possible exchange route for meiofauna between the Antarctic and South America, especially since these species seem to be constrained by water depth.
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