Abstract
The shallow-water Asellota from the Beagle Channel were investigated, based on material collected at four localities in 2001-2002. A total of 3,124 asellotes were sorted, and three new species and 12 new records of distribution were reported. The Paramunnidae showed the highest species diversity and abundance (11 species and 1,463 specimens). The present research raises the number of species known from the Beagle Channel to 23; of these, 16 were previously reported from the Magellan Straits, representing 69% of similarity. Based on the present results and published data, the faunistic affinities for the shallow-water Asellota was 30% between the Magellan region and the Scotia Arc, and 26% between the Magellan region and the Antarctic Peninsula.
Highlights
The Beagle Channel is a narrow, elongated sound located at the southern tip of South America
Many isopod Asellota have been reported from the Magellan region, mainly by Nordenstam
Among the Asellota, 25 species belonging to six families were identified (Table 2)
Summary
The Beagle Channel is a narrow, elongated sound located at the southern tip of South America. Brandt et al (1997) stated that this channel is one of the key areas for taxonomic, ecological and biogeographic research, and they suggested that it should be investigated faunistically in more detail. Only seven species are known from the Beagle Channel up to now (Monod, 1926; Nordenstam, 1933; Brandt, 1999). The aims of this study are to describe the taxonomic composition and abundance of the shallowwater Asellota from the Beagle Channel, and to anasm69s2159/14. 1. – Locations of the sampling stations in the Beagle Channel. Lyze the faunistic affinities between this channel and the surrounding areas
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