Ma, Xiaolin Ni, Yijun Wang, Xiaoyu Hu, Wei Yin, Mingbo Lineage diversity, morphological and genetic divergence in Daphnia magna (Crustacea) among Chinese lakes at different altitudes <p><a>The biogeography and genetic structure of aquatic zooplankton populations remains understudied in the Eastern Palearctic, especially the Qinghai-Tibetan Plateau. Here, we explored the population-genetic diversity and structure of the cladoceran waterflea <i>Daphnia magna</i> found in eight (out of 303 investigated) waterbodies across China. The three Tibetan <i>D. magna</i> populations were detected within a small geographical area, suggesting these populations have expanded from refugia. We detected two divergent mitochondrial lineages of <i>D. magna</i> in China: one was restricted to the Qinghai-Tibetan Plateau and the other was present in lowland China. Several different haplotypes in the Qinghai-Tibetan Plateau were most similar to those from various parts of Siberia, suggesting that as a source region. We also found substantial genetic differentiation between <i>D. magna</i> populations from the Qinghai-Tibetan Plateau and those from lowland China. Moreover, significant morphological differences were identified: <i>D. magna</i> from the Qinghai-Tibetan Plateau had a larger head length, body length and body width than did those from lowland China. Geographical and environmental factors were correlated with the observed morphological variation and genetic divergence of <i>D. magna</i> in China. Our data offer an insight into the divergence of freshwater zooplankton due to the uplift of the Qinghai-Tibetan Plateau.</a></p> Daphnia magna;genetic divergence;refugia;the Qinghai-Tibetan Plateau;Paleontology 2020-06-15
    https://brill.figshare.com/articles/journal_contribution/Lineage_diversity_morphological_and_genetic_divergence_in_Daphnia_magna_Crustacea_among_Chinese_lakes_at_different_altitudes/12248306
10.6084/m9.figshare.12248306.v1