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Genetic population structures of the blue starfish Linckia laevigata and its gastropod ectoparasite Thyca crystallina 
University of Bremen, Germany.
University of Bremen, Germany; University of Leipzig, Germany.
University of Bremen, Germany; Institut für Nutztiergenetik, Germany.
University of Bremen, Germany.
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2009 (English)In: Marine Ecology Progress Series, ISSN 0171-8630, E-ISSN 1616-1599, Vol. 396, 211-219 p.Article in journal (Refereed) Published
Abstract [en]

Comparative analyses of the genetic population structure of hosts and parasites can be useful to elucidate factors that influence dispersal, because common ecological and evolutionary processes can lead to congruent patterns. We studied the comparative genetic population structure based on partial sequences of the mitochondrial cytochrome oxidase I gene of the blue starfish Linckia laevigata and its gastropod ectoparasite Thyca crystallina in order to elucidate evolutionary processes in the Indo-Malay Archipelago. AMOVA revealed a low fixation index but significant genetic population structure (φST = 0.03) in L. laevigata, whereas T. crystallina showed panmixing (φST = 0.005). According to a hierarchical AMOVA, the populations of L. laevigata could be assigned to the following groups: (1) Eastern Indian Ocean, (2) central Indo-Malay Archipelago and (3) West- ern Pacific. This pattern of a genetic break in L. laevigata between the Indian and Pacific Ocean, con- gruent to studies on other marine species in the Indo-Malay Archipelago, is likely due to allopatry caused by Pliocene and Pleistocene glacial sea level low stands. 

Place, publisher, year, edition, pages
2009. Vol. 396, 211-219 p.
Keyword [en]
COI, Coral Triangle, Coral reef, Phylogeography, Population expansion, Southeast Asia
National Category
Ecology Zoology
URN: urn:nbn:se:su:diva-107754DOI: 10.3354/meps08281ISI: 000273549400020OAI: diva2:750245
Available from: 2014-09-27 Created: 2014-09-27 Last updated: 2014-10-28Bibliographically approved

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Meyer-Wachsmuth, I.
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