Molecular Evidence for Two Cryptic Species of<i>Homalometron</i>(Digenea: Apocreadiidae) in Freshwater Fishes of the Southeastern United States

Curran, Stephen S.; Tkach, Vasyl V.; Overstreet, Robin M.

doi:10.1654/4626.1

Cited by 26 publications

(18 citation statements)

References 15 publications

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“…Molecular analyses and phylogenetics have greatly influenced our understanding of delineating species-complexes, evaluating traditional taxonomic groups, and estimating relationships among taxa (e.g., Jousson et al 2000, Nolan and Cribb 2005, Olson and Tkach 2005, Yang and Rannala 2012, Curran et al 2013. While these tools are extremely useful, they often have problems estimating relationships between taxa when broadly defined morphological taxa (e.g., Macvicaria Bray, 1982, andNeolebouria Gibson, 1976) are used in the analysis without including the type species (Andres et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Molecular characterization of two opecoelid trematodes from fishes in the Gulf of Mexico, with a description of a new species of Helicometra

Andres

Ray

Pulis

et al. 2014

Acta Parasitologica

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The plagioporine opecoelids Helicometra fasciata (Rudolphi, 1819) Odhner, 1902, and Macvicaria crassigula (Linton, 1910 Bartoli, Bray, and Gibson, 1989 have been reported from fishes in expansive geographic regions, disjointed from their type localities. New material of M. crassigula was collected from near its type locality as well as specimens resembling Helicometra fasciata sensu lato from three triglids in the Gulf of Mexico. Comparisons of the ribosomal DNA (rDNA) sequences, comprising the partial 18S rDNA, internal transcribed spacer region (= ITS1, 5.8S, and ITS2), and partial 28S rDNA gene, from M. crassigula and Helicometra fasciata sensu lato in the Gulf of Mexico were made with sequences deposited in GenBank from those species from the Mediterranean Sea. Results reveal that M. crassigula sensu stricto from the Gulf of Mexico is distinct from the two cryptic species of M. crassigula sensu lato from the Mediterranean Sea and Helicometra fasciata sensu lato in this study differs from H. fasciata sequences from the Mediterranean Sea, thus Helicometra manteri sp. nov. is described.

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Section: Introductionmentioning

confidence: 99%

Molecular characterization of two opecoelid trematodes from fishes in the Gulf of Mexico, with a description of a new species of Helicometra

Andres

Ray

Pulis

et al. 2014

Acta Parasitologica

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“…Jousson et al, 2000;Hunter et al, 2010;Calhoun et al, 2013;Curran et al, 2013). Especially where the species occur in sympatry, we suspect that circumstances comparable to those discussed above have underpinned trematode speciation.…”

Section: Genus Level Host-specificitymentioning

confidence: 86%

A species pair of Bivesicula Yamaguti, 1934 (Trematoda: Bivesiculidae) in unrelated Great Barrier Reef fishes: implications for the basis of speciation in coral reef fish trematodes

2015

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Combined morphological and molecular analysis shows that a species of Bivesicula Yamaguti, 1934 from four species of Apogonidae Günther [Nectamia fusca (Quoy & Gaimard), Ostorhinchus angustatus (Smith & Radcliffe), O. cookii (Macleay) and Taeniamia fucata (Cantor)] on the Great Barrier Reef is morphologically similar to, but clearly distinct from B. unexpecta Cribb, Bray & Barker, 1994 which infects a sympatric pomacentrid, Acanthochromis polyacanthus (Bleeker). Bivesicula neglecta n. sp. is proposed for the form from apogonids. Novel ITS2 rDNA sequences generated for the two species differ at just one consistent base position, implying that the two species are closely related. The combination of their close relationship, high but distinct specificity and co-occurrence suggests that speciation was driven by a recent host switching event enabled by similar dietary ecomorphology.

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“…There also occur a few freshwater species from fundulids not inhabiting the southeast, but they are being described and they appear similar to H. pallidum. In freshwater in Mississippi and Louisiana, there are two cryptic species similar to Homalometron armatum, which occur northward to Lake Erie and Ontario, Canada, as well as in Mississippi, and can be separated by molecular means but with unreliable morphological differentiation (Curran et al 2013b). A similar Gulf and Caribbean species, Homalometron elongatum, infecting a gerreid and appearing more elongated than H. pallidum and also possessing three pairs of relatively large opposing oral papillae projecting from near the mouth, makes it distinguishable from H. pallidum and another species by both molecular and minor morphological differences.…”

Section: Biodiversitymentioning

confidence: 99%

Diseases and Mortalities of Fishes and Other Animals in The Gulf of Mexico

Overstreet

Hawkins

2017

Habitats and Biota of the Gulf of Mexico: Before the Deepwater Horizon Oil Spill

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Molecular Evidence for Two Cryptic Species ofHomalometron(Digenea: Apocreadiidae) in Freshwater Fishes of the Southeastern United States

Cited by 26 publications

References 15 publications

Molecular characterization of two opecoelid trematodes from fishes in the Gulf of Mexico, with a description of a new species of Helicometra

Molecular characterization of two opecoelid trematodes from fishes in the Gulf of Mexico, with a description of a new species of Helicometra

A species pair of Bivesicula Yamaguti, 1934 (Trematoda: Bivesiculidae) in unrelated Great Barrier Reef fishes: implications for the basis of speciation in coral reef fish trematodes

Diseases and Mortalities of Fishes and Other Animals in The Gulf of Mexico

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