期刊
PARASITOLOGY RESEARCH
卷 119, 期 7, 页码 2129-2137出版社
SPRINGER
DOI: 10.1007/s00436-020-06713-4
关键词
Eye fluke; Catfish; Neotropic; Diplostomoidea; Phylogeny; Genomics
类别
资金
- Puerto Rico Science, Technology and Research Trust [2016-00080]
- National Science Foundation's Division of Environmental Biology [1845021]
- University of Guelph through NSERC
- University of Guelph through Genome Canada
- Ontario Genomics Institute
- International Barcode of Life
- Universidad Nacional de La Plata [11/N896]
- Comision de Investigaciones Cientificas de la provincia de Buenos Aires, Argentina [597/16]
- CAPES (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior) [process 13741-12-8]
- CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico) [process 480180/2011-3]
- Division Of Environmental Biology
- Direct For Biological Sciences [1845021] Funding Source: National Science Foundation
Diplostomum ardeae Dubois, 1969 has seldom been reported since its description from the great blue heron (Ardea herodias L., 1758) in the USA. Sequences obtained in this study from the barcode region of cytochrome c oxidase 1 (CO1) in diplostomids from black-crowned night heron (Nycticorax nycticorax (L., 1758)) in Puerto Rico matched data from D. ardeae from A. herodias in the type region. We also obtained DNA barcodes from morphologically similar diplostomids from a rufescent tiger heron (Tigrisoma lineatum (Boddaert, 1783)) and from metacercariae from eye lenses of Trachelyopterus galeatus (Linnaeus, 1766) from the Parana River basin in Argentina and Brazil, respectively. Barcodes matched (97-100% identity) in these South American adult and larval specimens as well as in recently published sequences from metacercariae from 11 other siluriform fishes from the same region. Barcodes from the South American species, which we describe as Diplostomum lunaschiae n. sp., differed from those of D. ardeae by 7.2-9.8%, and the new species differs from D. ardeae in its size, pharynx:oral sucker length ratio, egg:body length ratio, and distribution of vitellaria. As in prior phylogenetic analysis of CO1 sequences, both D. ardeae and D. lunaschiae n. sp. were not associated with Diplostomum. In more character-rich analyses of nuclear rDNA and of mitochondrial genomes, D. ardeae was an early divergent member of clades of species of Diplostomum. Consequently, we continue to consider D. ardeae and D. lunaschiae n. sp. members of Diplostomum, in contrast to recent suggestions that these species may belong to a different genus.
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