Based on our data confirming the deep divisions between this Antarctic lineage, which includes representatives of both groups, we recommend that the use of furciger and harmsworthi group terminology is now abandoned, as it leads to systematic and biogeographical confusion. Within this Antarctic lineage there are further deep divisions among geographic regions of the continent, consistent with the presence of a species complex. Our analyses show that all Antarctic members belong to a single lineage, evolving separately from non-Antarctic representatives. Using collections of tardigrades from across the Antarctic continent and publicly available sequences obtained from online databases, we use mitochondrial and nuclear ribosomal sequence data to clarify the relationships of Antarctic Mesobiotus species. furciger, as originally described, may represent an Antarctic-specific lineage. However, some authors considered that Meb.
It has commonly been divided into two “groups”, referred to as harmsworthi and furciger, with both groups currently considered cosmopolitan, with global reports including from both the Arctic and the Antarctic. Mesobiotus is a globally distributed tardigrade genus. Terrestrial invertebrate species currently found in Antarctica often show multi-million year, and even Gondwanan, heritage, with little evidence of recent colonisation. As a result, invertebrate populations have become isolated and fragmented, in some cases leading to speciation. FinchTV is a chromatogram viewer that can display an entire trace in scalable multi-pane views.
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Description: FinchTV is a software that provides a way to view Deoxyribonucleic acid (DNA) sequence traces on Linux, Mac OSX, Windows, and Solaris platforms. Antarctica has been isolated and progressively glaciated for over 30 million years, with only approximately 0.3 % of its area currently ice-free and capable of supporting terrestrial ecosystems. The Apple Conversion Script is a freeware available from Micromon.
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