期刊
INTERNATIONAL JOURNAL FOR PARASITOLOGY
卷 41, 期 12, 页码 1263-1272出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijpara.2011.07.012
关键词
Monogenea; Mazocraeoides gonialosae; Phylogeography; Coast of China; COI
类别
资金
- National Natural Science Foundation of China [31072215]
- Ph.D. Programs Foundation of Ministry of Education of China [20100171110033]
- Science Foundation of the State Key Laboratory of Biocontrol, Sun Yat-sen University, China [SKLBC10B04]
In the present study, we examined the phylogeographical pattern of the monogenean. Mazocraeoides gonialosae, which parasitises the dotted gizzard shad (Konosirus punctatus) along the coast of China. Fragments of 756 bp of the mitochondrial cytochrome c oxidase subunit I gene were sequenced for 147 individuals from seven localities along the coast of China. Phylogenetic analysis revealed no significant genealogical clades of samples corresponding to sampling localities. Analyses of molecular variance and pairwise F-ST suggested a high rate of gene flow and the lack of a predictable genetic structure between different populations of this parasite. Both neutrality tests and mismatch distribution analyses indicated a recent population expansion in M. gonialosae after the last glacial maximum. Gradually decreasing genetic diversity in more northerly populations implied a historical south-to-north expansion of this parasite. Dispersal of eggs and larvae with ocean currents was considered to be associated with the genetic homogeneity of this species. The limited time to accumulate genetic variation after the last glacial maximum may also account in part for the lack of phylogeographical structure in the studied region. (C) 2011 Australian Society for Parasitology Inc. Published by Elsevier Ltd. All rights reserved.
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