Number of the records: 1
Description, microhabitat selection and infection patterns of sealworm larvae (Pseudoterranova decipiens species complex, nematoda: ascaridoidea) in fishes from Patagonia, Argentina
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SYSNO ASEP 0420954 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Description, microhabitat selection and infection patterns of sealworm larvae (Pseudoterranova decipiens species complex, nematoda: ascaridoidea) in fishes from Patagonia, Argentina Author(s) Hernández-Orts, Jesús S. (BC-A) ORCID, RID
Aznar, F. J. (ES)
Blasco-Costa, Maria Isabel (BC-A)
García, N.A. (AR)
Víllora-Montero, M. (ES)
Crespo, E.A. (AR)
Raga, J. A. (ES)
Montero, F. E. (ES)Source Title Parasites & Vectors. - : BioMed Central - ISSN 1756-3305
Roč. 6, AUG 2013 (2013), s. 252Number of pages 15 s. Publication form Online - E Language eng - English Country GB - United Kingdom Keywords Anisakidae ; Eealworms ; Pseudoterranova cattani ; taxonomy ; Ecology ; Cox1 ; Marine fishes ; Southwestern Atlantic Subject RIV EH - Ecology, Behaviour Institutional support BC-A - RVO:60077344 UT WOS 000324780700001 DOI 10.1186/1756-3305-6-252 Annotation Methods: A total of 542 individual fish from 20 species from the Patagonian coast of Argentina were examined for sealworms. The body cavity, the muscles, internal organs, and the mesenteries were examined to detect nematodes. Sealworm larvae were removed from their capsules and fixed in 70% ethanol. For molecular identification, partial fragments of the mitochondrial cytochrome c oxidase subunit 1 gene (cox1) were amplified for 10 isolates from 4 fish species. Morphological and morphometric data of sealworms were also obtained. Results: A total of 635 larvae were collected from 12 fish species. The most infected fish was Prionotus nudigula, followed by Percophis brasiliensis, Acanthistius patachonicus, Paralichthys isosceles, and Pseudopercis semifasciata. Sequences obtained for the cox1 of sealworms from A. patachonicus, P. isosceles, P. brasiliensis and P. nudigula formed a reciprocally monophyletic lineage with published sequences of adult specimens of Pseudoterranova cattani from the South American sea lion Otaria flavescens, and distinct from the remaining 5 species of Pseudoterranova. A morphological description, including drawings and scanning electron microscopy photomicrographs of these larvae is provided. Sealworms collected from Argentinean fishes did not differ in their diagnostic traits from the previously described larvae of P. cattani. However a discriminant analysis suggests that specimens from P. nudigula were significantly larger than those from other fishes. Most of the sealworms were collected encapsulated from the muscles and, to a lesser degree, from the mesenteries and the liver. Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2014
Number of the records: 1