Recent evolution of alternative reproductive modes in the 'living fossil' Triops cancriformis.

ABSTRACT:

Background

The Notostraca is a small but ancient crustacean order with a contrasting combination of a conservative morphology and a wide range of reproductive modes. The tadpole shrimp Triops cancriformis, includes bisexual - the putatively ancestral state -, androdioecious and hermaphrodite populations. As hermaphroditism and androdioecy confer a colonisation advantage, we expect the postglacial colonisation of northern Europe to have been effected by lineages with such reproductive modes. Therefore, N European populations should be composed of closely related lineages reflecting a recent range expansion. In contrast, glacial refugia in the south should contain bisexual populations with high haplotype diversity and more population structuring. To test these hypotheses, we analysed

SUBMITTER: Zierold T 

PROVIDER: S-EPMC2075510 | biostudies-literature | 2007 Sep

REPOSITORIES: biostudies-literature