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  Diversity, specificity and speciation in larval Diplostomidae (Platyhelminthes: Digenea) in the eyes of freshwater fish, as revealed by \DNA\ barcodes

Locke, S. A., Al-Nasiri, F. S., Caffara, M., Drago, F., Kalbe, M., Lapierre, A. R., et al. (2015). Diversity, specificity and speciation in larval Diplostomidae (Platyhelminthes: Digenea) in the eyes of freshwater fish, as revealed by \DNA\ barcodes. International Journal for Parasitology, 45(13), 841-855. doi:10.1016/j.ijpara.2015.07.001.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-5C7E-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-04D4-8
Genre: Journal Article

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 Creators:
Locke, Sean A., Author
Al-Nasiri, Fatima S., Author
Caffara, Monica, Author
Drago, Fabiana, Author
Kalbe, Martin1, Author              
Lapierre, Angela Rose, Author
McLaughlin, J. Daniel, Author
Nie, Pin, Author
Overstreet, Robin M., Author
Souza, Geza T.R., Author
Takemoto, Ricardo M., Author
Marcogliese, David J., Author
Affiliations:
1Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              

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Free keywords: DNA barcode; Ecological speciation; Host specificity; Internal transcribed spacer; Sampling effort; Species delimitation
 Abstract: Abstract Larvae (metacercariae) in some species of Diplostomidae (Platyhelminthes: Digenea) inhabit fish eyes and are difficult to identify to species based on morphology. \DNA\ barcoding has clarified the diversity and life cycles of diplostomids in North America, Europe and Africa, but has seldom been used in parasites sampled in large numbers or at large spatial scales. Here, distance-based analysis of cytochrome c oxidase 1 barcodes and, in some specimens, internal transcribed spacer (ITS-1, 5.8S, ITS-2) sequences was performed for over 2000 diplostomids from Africa, the Middle East, Europe, Asia and the Americas. Fifty-two species of Diplostomum, Tylodelphys and Austrodiplostomum (Digenea: Diplostomidae) were distinguished. The 52 species comprise 12 identified species, six species in two species complexes and 34 putative species, and 33/52 had been delineated in previous studies. Most (23/40) of the unidentified, putative species distinguished by cytochrome c oxidase 1 distances were supported by at least one additional line of evidence. As the intensity of sampling of the 52 species increased, variation in cytochrome c oxidase 1 decreased between and increased within species, while the spatial scale at which species were sampled had no effect. Nonetheless, variation between species always exceeded variation within species. New life-cycle linkages, geographic and host records, and genetic data were recorded in several species, including Tylodelphys jenynsiae, Tylodelphys immer and Diplostomum ardeae. Species of Diplostomum inhabiting the lens are less host-specific and less numerous than those infecting other tissues, suggesting that reduced immune activity in the lens has influenced rates of speciation.

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Language(s): eng - English
 Dates: 2015-06-232015-04-112015-07-082015-08-112015
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1016/j.ijpara.2015.07.001
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Title: International Journal for Parasitology
  Other : Int. J. Parasit.
Source Genre: Journal
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Publ. Info: Oxford : Pergamon
Pages: - Volume / Issue: 45 (13) Sequence Number: - Start / End Page: 841 - 855 Identifier: ISSN: 0020-7519
CoNE: https://pure.mpg.de/cone/journals/resource/954925407744