@ARTICLE{TreeBASE2Ref18734, author = {Sj?r?ur Hammer and Ruth Brown and Leandro Bugoni and R. L. Palma and Joseph Hughes}, title = {On the origin of Halipeurus heraldicus on Round Island petrels: cophylogenetic relationships between petrels and their chewing lice.}, year = {2010}, keywords = {Coevolution; Cospeciation; Lice; ParaFit; Phthiraptera; Gadfly petrels; Round Island; Trindade Island}, doi = {10.1016/j.ympev.2010.01.013}, url = {}, pmid = {}, journal = {Molecular Phylogenetics and Evolution}, volume = {}, number = {}, pages = {}, abstract = {Lice phylogenetic relationships have often been used to elucidate host relationships and vice versa. In this study, we investigate the louse genus Halipeurus which parasitizes bird hosts in the families Procellariidae, Hydrobatidae and Pelecanoididae. In this genus, the presence of two different lice species on Pterodroma arminjoniana in different breeding grounds (Halipeurus heraldicus on Round Island, off Mauritius in the Indian Ocean and H. kermadecensis on Trindade Island in the Atlantic Ocean) has led to some confusion in the distribution of Pt. arminjoniana and its close relatives Pt. heraldica and Pt. neglecta. By using a cophylogenetic approach that incorporates uncertainties in phylogenetic reconstructions, we show that the presence of H. heraldicus on Pt. arminjoniana and Pt. heraldica on Round Island and on Pt. heraldica on Gambier Island are the result of a host switch whereas H. kermadecensis is the ancestral parasite of Pt. arminjoniana. This suggests that H. kermadecensis was lost during or after colonisation of Round Island by Pt. arminjoniana. Two alternative scenarios are possible, one where birds colonizing Round Island arrived without H. kermadecensis ("missing the boat"), or that H. kermadecensis arrived at Round Island but subsequently became extinct ("drowning on arrival") and was replaced by H. heraldicus.} }

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