科研之友
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摘要
<jats:p>The molecular phylogeny of the Atlanto-Mediterranean species of the genus Felimare, particularly those attributed to the species<jats:italic>F. picta</jats:italic>, was inferred using two mitochondrial markers (16S and COI). A recent revision of the Chromodorididae clarified the taxonomic relationships at the family level redefiningthe genus<jats:italic>Felimare</jats:italic>. However, conflicting taxonomic classifications have been proposed for a restrict group of taxa with overlapping morphological characteristics and geographical distributions designated here as the<jats:italic>Felimare picta</jats:italic>complex. Three major groups were identified: one Mediterranean and amphi-Atlantic group; a western Atlantic group and a tropical eastern Atlantic group.<jats:italic>F. picta</jats:italic>forms a paraphyletic group since some subspecies are more closely related with taxa traditionaly classified as independent species (e.g.<jats:italic>F. zebra</jats:italic>) than with other subspecies with allopatric distributions (e.g.<jats:italic>F. picta picta</jats:italic>and<jats:italic>F. picta tema</jats:italic>). Usually, nudibranchs have adhesive demersal eggs, short planktonic larval phases and low mobility as adults unless rafting on floating materials occurs. Surprisingly however, the phylogeny of the<jats:italic>F. picta</jats:italic>complex suggests that they successfully cross main Atlantic biogeographic barriers including the mid-Atlantic barrier. This ability to cross different biogeographic barriers may be related to<jats:italic>F. picta</jats:italic>’s distinct life history and ecological traits. Compared to other Chromodorididae<jats:italic>F. picta</jats:italic>has larger eggs and planktotrophic larvae which could be related to a longer planktonic phase.</jats:p>
- 出版日期2016-1-19
