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dc.contributor.author
García Varela, Martín
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dc.contributor.author
Masper, Alice
dc.contributor.author
Crespo, Enrique Alberto
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dc.contributor.author
Hérnadez Orts, Jesús S.
dc.date.available
2022-06-29T03:51:17Z
dc.date.issued
2021-02
dc.identifier.citation
García Varela, Martín; Masper, Alice; Crespo, Enrique Alberto; Hérnadez Orts, Jesús S.; Genetic diversity and phylogeography of Corynosoma australe Johnston, 1937 (Acanthocephala: Polymorphidae), an endoparasite of otariids from the Americas in the northern and southern hemispheres; Elsevier Ireland; Parasitology International; 80; 102205; 2-2021; 1-9
dc.identifier.issn
1383-5769
dc.identifier.uri
http://hdl.handle.net/11336/160700
dc.description.abstract
Adult specimens of Corynosoma australe Johnston, 1937 were recorded from the intestines of California sea lions, Zalophus californianus (Lesson), from Baja California Peninsula, Mexico, whereas larval forms were collected from two fish species on the Argentinian coast. Adult specimens of C. australe were morphologically characterized by having a cylindrical proboscis with 18–20 rows of 12–14 hooks per row and a cylindrical trunk expanded anteriorly into a disk with tiny, triangular spines spreading almost to three quarters of the hind-trunk in males and to the posterior body end in females. The aim of this study was to explore the genetic diversity and systematic position of C. australe distributed in the Americas. Newly generated sequences of the mitochondrial cytochrome c oxidase subunit 1 (cox 1) gene were compared with sequences available from GenBank. Phylogenetic analyses performed with the cox 1 dataset using maximum likelihood and Bayesian inference showed that the 11 new sequences of C. australe recovered from the California sea lion in northern Mexico plus the six sequences from Argentinian seashores formed a clade with other sequences of specimens previously identified as C. australe. The intraspecific genetic divergence among the isolates was very low, ranging from 1 to 1.7%, and in combination with the phylogenetic trees confirmed that the isolates belonged to the same species. The cox 1 haplotype network inferred with 27 sequences revealed 18 haplotypes divided into two clusters clearly separated from each other by 5 substitutions. The first cluster corresponded to specimens from the Northern Hemisphere (United States of America and Mexico), and the second corresponded to specimens from the Southern Hemisphere (Argentina and Brazil). The current evidence suggests that C. australe has an amphitemperate distribution and is associated mainly with otariids with secondary and independent colonization events to other mammals and the Magellanic penguin in the Southern Hemisphere.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Ireland
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ACANTHOCEPHALA
dc.subject
ARGENTINA
dc.subject
CORYNOSOMA
dc.subject
COX 1
dc.subject
HAPLOTYPES
dc.subject
MEXICO
dc.subject
OTARIIDAE
dc.subject
PHYLOGENY
dc.subject.classification
Zoología, Ornitología, Entomología, Etología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Genetic diversity and phylogeography of Corynosoma australe Johnston, 1937 (Acanthocephala: Polymorphidae), an endoparasite of otariids from the Americas in the northern and southern hemispheres
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-03-04T13:19:47Z
dc.journal.volume
80
dc.journal.number
102205
dc.journal.pagination
1-9
dc.journal.pais
Irlanda
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dc.description.fil
Fil: García Varela, Martín. Universidad Nacional Autónoma de México; México
dc.description.fil
Fil: Masper, Alice. Centro de Investigación en Alimentación y Desarrollo; México
dc.description.fil
Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
dc.description.fil
Fil: Hérnadez Orts, Jesús S.. Biology Centre of the Academy of Sciences of the Czech Republic; República Checa
dc.journal.title
Parasitology International
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.parint.2020.102205
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S1383576920301550
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