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Common inhabitants of Antarctic and Subantarctic rocky shores, the limpet genus Nacella, includes 15 nominal species distributed in different provinces of the Southern Ocean. The Magellanic Province represents the area with the highest diversity of the genus. Phylogenetic reconstructions showed an absence of reciprocal monophyly and high levels of genetic identity among nominal species in this Province...
Two adult populations of Pleuroncodes monodon exist, the larger Achira (35°10 S to 36°15 S) and the smaller Biobio (36°35 S to 36°50 S). The presence of a large nursery area of the species is reported, connecting both adult populations; the habitat is dominated by extensive sulphide microbial communities which flourish at very low oxygen concentrations. The existence of northerly and southerly...
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