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Phenotypic plasticity, genetic structure and systematic position of Neoechinorhynchus emyditoides Fisher, 1960 (Acanthocephala: Neoechinorhynchidae): a parasite of emydid turtles from the Nearctic and Neotropical regions

The taxonomy of the 10 recognized Neoechinorhynchus species associated with emydid turtles is complex due to the morphological conservatism. In the present study, specimens of N. emyditoides from northern and southeastern Mexico exhibit great phenotypic plasticity on its diagnostic characteristics....

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Autores principales: Sereno-Uribe, Ana Lucia, López-Jiménez, Alejandra, González-García, Marcelo Tonatiuh, Pinacho-Pinacho, Carlos Daniel, Macip Ríos, Rodrigo, García-Varela, Martín
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Cambridge University Press 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10090580/
https://www.ncbi.nlm.nih.gov/pubmed/35437127
http://dx.doi.org/10.1017/S003118202200049X
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author Sereno-Uribe, Ana Lucia
López-Jiménez, Alejandra
González-García, Marcelo Tonatiuh
Pinacho-Pinacho, Carlos Daniel
Macip Ríos, Rodrigo
García-Varela, Martín
author_facet Sereno-Uribe, Ana Lucia
López-Jiménez, Alejandra
González-García, Marcelo Tonatiuh
Pinacho-Pinacho, Carlos Daniel
Macip Ríos, Rodrigo
García-Varela, Martín
author_sort Sereno-Uribe, Ana Lucia
collection PubMed
description The taxonomy of the 10 recognized Neoechinorhynchus species associated with emydid turtles is complex due to the morphological conservatism. In the present study, specimens of N. emyditoides from northern and southeastern Mexico exhibit great phenotypic plasticity on its diagnostic characteristics. We sequenced three molecular markers: the internal transcribed spacers ITS1, ITS2 and 5.8S gene, the D2 + D3 domains of the large subunit from nuclear DNA and cytochrome c oxidase subunit I (cox1) from mitochondrial DNA. Sequences of the nuclear molecular markers were aligned and compared with other congeneric species associated with emydids available in GenBank. Phylogenetic analyses supported the polyphyly of Neoechinorhynchus. The species from emydids formed a clade, which was subdivided into five subclades that correspond with each species analysed (N. pseudemydis, N. chrysemydis, N. emydis, N. schmidti and N. emyditoides). To understand better the genetic structure of N. emyditoides a haplotype network was inferred with 29 cox1 sequences, revealing the presence of 13 haplotypes, two of which were shared and 11 were unique. The high values of fixation index, F(st) (0.4227–0.8925) detected between the two populations from southeastern and the two from northern Mexico indicated low genetic flow among the populations. Our data suggest that the Neoechinorhynchus species associated with emydid turtles diversified in the eastern USA and that of N. emyditoides expanded its distribution range reached southeastern Mexico.
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spelling pubmed-100905802023-04-13 Phenotypic plasticity, genetic structure and systematic position of Neoechinorhynchus emyditoides Fisher, 1960 (Acanthocephala: Neoechinorhynchidae): a parasite of emydid turtles from the Nearctic and Neotropical regions Sereno-Uribe, Ana Lucia López-Jiménez, Alejandra González-García, Marcelo Tonatiuh Pinacho-Pinacho, Carlos Daniel Macip Ríos, Rodrigo García-Varela, Martín Parasitology Research Article The taxonomy of the 10 recognized Neoechinorhynchus species associated with emydid turtles is complex due to the morphological conservatism. In the present study, specimens of N. emyditoides from northern and southeastern Mexico exhibit great phenotypic plasticity on its diagnostic characteristics. We sequenced three molecular markers: the internal transcribed spacers ITS1, ITS2 and 5.8S gene, the D2 + D3 domains of the large subunit from nuclear DNA and cytochrome c oxidase subunit I (cox1) from mitochondrial DNA. Sequences of the nuclear molecular markers were aligned and compared with other congeneric species associated with emydids available in GenBank. Phylogenetic analyses supported the polyphyly of Neoechinorhynchus. The species from emydids formed a clade, which was subdivided into five subclades that correspond with each species analysed (N. pseudemydis, N. chrysemydis, N. emydis, N. schmidti and N. emyditoides). To understand better the genetic structure of N. emyditoides a haplotype network was inferred with 29 cox1 sequences, revealing the presence of 13 haplotypes, two of which were shared and 11 were unique. The high values of fixation index, F(st) (0.4227–0.8925) detected between the two populations from southeastern and the two from northern Mexico indicated low genetic flow among the populations. Our data suggest that the Neoechinorhynchus species associated with emydid turtles diversified in the eastern USA and that of N. emyditoides expanded its distribution range reached southeastern Mexico. Cambridge University Press 2022-06 2022-04-19 /pmc/articles/PMC10090580/ /pubmed/35437127 http://dx.doi.org/10.1017/S003118202200049X Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
spellingShingle Research Article
Sereno-Uribe, Ana Lucia
López-Jiménez, Alejandra
González-García, Marcelo Tonatiuh
Pinacho-Pinacho, Carlos Daniel
Macip Ríos, Rodrigo
García-Varela, Martín
Phenotypic plasticity, genetic structure and systematic position of Neoechinorhynchus emyditoides Fisher, 1960 (Acanthocephala: Neoechinorhynchidae): a parasite of emydid turtles from the Nearctic and Neotropical regions
title Phenotypic plasticity, genetic structure and systematic position of Neoechinorhynchus emyditoides Fisher, 1960 (Acanthocephala: Neoechinorhynchidae): a parasite of emydid turtles from the Nearctic and Neotropical regions
title_full Phenotypic plasticity, genetic structure and systematic position of Neoechinorhynchus emyditoides Fisher, 1960 (Acanthocephala: Neoechinorhynchidae): a parasite of emydid turtles from the Nearctic and Neotropical regions
title_fullStr Phenotypic plasticity, genetic structure and systematic position of Neoechinorhynchus emyditoides Fisher, 1960 (Acanthocephala: Neoechinorhynchidae): a parasite of emydid turtles from the Nearctic and Neotropical regions
title_full_unstemmed Phenotypic plasticity, genetic structure and systematic position of Neoechinorhynchus emyditoides Fisher, 1960 (Acanthocephala: Neoechinorhynchidae): a parasite of emydid turtles from the Nearctic and Neotropical regions
title_short Phenotypic plasticity, genetic structure and systematic position of Neoechinorhynchus emyditoides Fisher, 1960 (Acanthocephala: Neoechinorhynchidae): a parasite of emydid turtles from the Nearctic and Neotropical regions
title_sort phenotypic plasticity, genetic structure and systematic position of neoechinorhynchus emyditoides fisher, 1960 (acanthocephala: neoechinorhynchidae): a parasite of emydid turtles from the nearctic and neotropical regions
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10090580/
https://www.ncbi.nlm.nih.gov/pubmed/35437127
http://dx.doi.org/10.1017/S003118202200049X
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