Integrative taxonomy of Serrasentis gibsoni n. sp. (Acanthocephala: Isthmosacanthidae) from flatfishes in the Gulf of Mexico

The Isthmosacanthidae acanthocephalan species of the genus Serrasentis are parasites of marine teleosts and an elasmobranch. In this study, Serrasentis gibsoni n. sp. is described from the intestines of four flatfish species (Paralichthyidae), namely Ancyclopsetta quadrocellata, Cyclopsetta chittend...

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Bibliographic Details
Published in:Journal of helminthology 2023-12, Vol.97, p.e96-e96, Article e96
Main Authors: Martínez-Aquino, A., García-Teh, J.G., Ceccarelli, F.S., Aguirre-Macedo, M.L., Vidal-Martínez, V.M.
Format: Article
Language:English
Subjects:
Adults
Bats
Bayesian analysis
Cyclopsetta chittendeni
Cytochrome-c oxidase
Cytochromes
DNA barcoding
Evolution
Fish
Genetic diversity
Genetic variation
Intestine
Intestines
Marine fishes
Morphology
Paralichthyidae
Parasites
Phylogenetics
Phylogeny
Probability theory
Research Paper
Serrasentis
Species
Species diversity
Statistical inference
Taxonomy
Worms
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Summary:The Isthmosacanthidae acanthocephalan species of the genus Serrasentis are parasites of marine teleosts and an elasmobranch. In this study, Serrasentis gibsoni n. sp. is described from the intestines of four flatfish species (Paralichthyidae), namely Ancyclopsetta quadrocellata, Cyclopsetta chittendeni, Syacium gunteri, and S. papillosum from 10 oceanic sites in the Gulf of Mexico (GoM). Twenty sequences of the ‘barcoding’ region of cytochrome C oxidase subunit I gene were obtained from 20 adults of Serrasentis gibsoni n. sp. Additionally, five sequences of the barcoding region were obtained from five adults of rhadinorhynchid Gorgorhynchus lepidus from C. chittendeni, S. papillosum and one species of Haemulidae, Haemulom aurolineatum, from five oceanic sites from the GoM. Two phylogenetic approaches were followed: Bayesian inference and maximum likelihood. In both phylogenetic reconstructions, the sequences of Serrasentis gibsoni n. sp. were recovered as a monophyletic group within the genus Serrasentis and placed as a sister group to G. lepidus. However, due to the lack of molecular data for species of the Isthmosacanthidae and Rhadinorhynchidea, these phylogenetic inferences must be taken with caution. Serrasentis gibsoni n. sp. is the first species of Serrasentis described from Paralichthyidae flatfish species from marine waters of the Americas and from the GoM. Based on the barcoding data set analyzed, Serrasentis gibsoni n. sp. appears to have high intraspecific genetic variation; thus, it is necessary to continue exploring the genetic diversity of this species to infer its intraspecific evolutionary patterns.
ISSN:0022-149X
1475-2697
DOI:10.1017/S0022149X23000822