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Molecular and morphological evidence for nine species in North American Australapatemon (Sudarikov, 1959): a phylogeny expansion with description of the zygocercous Australapatemon mclaughlini n. sp.

Authors
  • Gordy, Michelle A.1
  • Locke, Sean A.2
  • Rawlings, Timothy A.3
  • Lapierre, Angela R.4
  • Hanington, Patrick C.1
  • 1 University of Alberta School of Public Health, 357F South Academic Building, Edmonton, AB, T6G 2G7, Canada , Edmonton (Canada)
  • 2 University of Puerto Rico at Mayagüez, Department of Biology, Mayagüez, 00681–9000, Puerto Rico , Mayagüez (Puerto Rico)
  • 3 Cape Breton University, Department of Biology, 1250 Grand Lake Road, Sydney, NS, B1P 6L2, Canada , Sydney (Canada)
  • 4 Concordia University, Department of Biology, 7141 Sherbrooke West, Montreal, QC, H4B 1R6, Canada , Montreal (Canada)
Type
Published Article
Journal
Parasitology Research
Publisher
Springer-Verlag
Publication Date
Jun 16, 2017
Volume
116
Issue
8
Pages
2181–2198
Identifiers
DOI: 10.1007/s00436-017-5523-x
Source
Springer Nature
Keywords
License
Yellow

Abstract

Zygocercous (aggregating) cercarial larvae were recently discovered emerging from a physid snail during a molecular survey of cercariae from molluscs in lakes in central Alberta, Canada. This manuscript delves into the characterization of these cercariae through morphological and molecular techniques and provides the first genetic information for a zygocercous larval trematode. Analyses of cytochrome c oxidase I of mitochondrial DNA and two partial regions of nuclear ribosomal DNA sequences revealed the zygocercous cercariae to belong to the genus Australapatemon Sudarikov, 1959. Further analyses of sequences of Australapatemon burti (Miller, 1923), from cercariae and adults collected from across North America, indicate a complex of nine genetically-distinct lineages within this species, a surprising level of diversity. The zygocercous cercariae, along with adult worms collected from ducks in Manitoba, Canada, and from Mexico, represent one of these lineages, and are herein described as Australapatemon mclaughlini n. sp. Seven lineages cannot yet be identified, but one is tentatively identified as Australapatemon burti.

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