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Occurrence of larval anisakids in horse mackerel (Trachurus trachurus) caught in Portuguese waters

2020-09Journal article Restricted access
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dc.contributor.authorLopes, Patrícia
dc.contributor.authorVilares, Anabela
dc.contributor.authorCaçador, Tânia
dc.contributor.authorMartins, Susana
dc.contributor.authorFerreira, Idalina
dc.contributor.authorCarvalho, Luís Madeira
dc.contributor.authorGargaté, Maria João
dc.date.accessioned2021-03-31T17:12:56Z
dc.date.available2021-03-31T17:12:56Z
dc.date.issued2020-09
dc.description.abstractThe third-stage larvae (L3) of the Anisakidae family are parasitic nematodes with zoonotic impact and are frequently encountered in the organs and musculature of various fish intended for human consumption. Since Anisakis simplex (s.s.) and A. pegreffii are the major aetiological agents of human disease, this study aims to combine the morphological and molecular data on the recovered anisakid larvae to contribute to a simplified morphological distinction of those species and conducted a survey of anisakid larvae infection in horse mackerel (Trachurus trachurus). Here, 116 horse mackerel caught in Portuguese waters were analysed for the presence of L3 of anisakids, and 3148 larvae were collected, of which only 30% were retrieved during visual inspection. As such, visual inspection does not appear to be very effective in anisakid detection. A prevalence of 84.5% of infected fish was found, and the mean intensity and mean abundance were 32.1 and 27.1 parasites per fish, respectively. The morphological and molecular analyses of 196 L3 randomly chosen from the total sample of parasites demonstrated the presence of L3 of mostly Anisakis spp., with only one L3 of Hysterothylacium aduncum. Relative frequencies of 62.9% for A. pegreffii and 37.1% for A. simplex (s.s.) were obtained. The morphometry differences between these two sibling species were evaluated, and the results demonstrated significant differences between the length of the ventriculus and the length of the oesophagus. Precisely, A. simplex (s.s.) has a longer oesophagus and ventriculus than A. pegreffii. As such, these differences may be used to distinguish the two species through morphological analysis.pt_PT
dc.description.sponsorshipThis research was funded by the National Institute of Health Doctor Ricardo Jorge and by CIISA - Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade deMedicina Veterinária, Universidade de Lisboa, Lisbon, Portugal, Project UIDP/CVT/00276/2020 (funded by FCT).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationParasitol Res. 2020 Sep;119(9):2799-2811. doi: 10.1007/s00436-020-06816-y. Epub 2020 Jul 17.pt_PT
dc.identifier.doi10.1007/s00436-020-06816-ypt_PT
dc.identifier.issn0932-0113
dc.identifier.urihttp://hdl.handle.net/10400.18/7621
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relationUIDP/CVT/00276/2020pt_PT
dc.relation.publisherversionhttps://link.springer.com/article/10.1007/s00436-020-06816-ypt_PT
dc.subjectAnimalspt_PT
dc.subjectAnisakiasispt_PT
dc.subjectAnisakispt_PT
dc.subjectFish Diseasespt_PT
dc.subjectFishespt_PT
dc.subjectHumanspt_PT
dc.subjectLarvapt_PT
dc.subjectMeatpt_PT
dc.subjectPerciformespt_PT
dc.subjectPortugalpt_PT
dc.subjectPrevalencept_PT
dc.subjectInfecções Sistémicas e Zoonosespt_PT
dc.titleOccurrence of larval anisakids in horse mackerel (Trachurus trachurus) caught in Portuguese waterspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage2811pt_PT
oaire.citation.issue9pt_PT
oaire.citation.startPage2799pt_PT
oaire.citation.titleParasitology Researchpt_PT
oaire.citation.volume119pt_PT
rcaap.embargofctAcesso de acordo com política editorial da revista.pt_PT
rcaap.rightsembargoedAccesspt_PT
rcaap.typearticlept_PT

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