RT info:eu-repo/semantics/masterThesis
T1 Estudio de la prevalencia de anisákidos zoonóticos en Sardina pilchardus (sardina de ley), Sardinella aurita (alacha), Sardinella maderensis (machuelo), Scomber colias (caballa) y Trachurus picturatus (chicharro)
A1 Santana Arocha, Zoraida
A2 Máster Univ. en Investigación y Diagnóstico de Enfermedades Tropicales
K1 Anisakids, Acanthocephala, small pelagic fish, anisakidosis, Canary Islands, purseseine
AB Anisakidae is a nematode family known as a danger for human health causing different stomachdiseases (anisakidosis) and allergic reactions by the ingestion of L3 larvae stage individuals present inuntreated raw (non-frozen) or undercooked marine fish, e.g.: anchovies marinated in vinegar, sushi.Anisakids presents a wide distribution and involves marine mammals as final hosts, zooplankton, fishand cephalopods as intermediate hosts, and humans act as accidental hosts. We investigated theprevalence of aquatic nematodes in the abdominal cavity and viscera of small pelagic fishes (SPF)caught by the artisanal purse-seine fleet of the Canary Islands. A total of 980 individuals were analysedbetween December, 2021 and March, 2022, during the routinely samplings performed in the EU DataCollection Framework including: Round Sardinella (Sardinella aurita, n = 201), Atlantic ChubMackerel (Scomber colias, n = 478) and Chub Mackerel (Trachurus picturatus, n = 301). Helminthsparasites were detected by the naked eye after biological sampling, extracted from the abdominalcavity and viscera, and stored in labelled vials in ethanol 70%. By morphological taxa they weredistinguished between Acanthocephala and anisakids, and the latter ones were identified to the lowesttaxonomical level as possible. A total of 77 anisakids were found in the samples. Based on theseobservations, S. colias presented the highest prevalence of these parasites, with the 10.8% ofindividuals parasitized by one or more individuals of anisakids, T. picturatus with the 5.3% vs. S.aurita which presented the lowest prevalence (0.5%), with only one parasitized individual. A positivecorrelation was observed between length parameter and parasitization by anisakids. Similar resultswere obtained in other researches from Canary Islands. The presence of this nematode should be a caseof studies (ecological, spatial) for decreasing the risk of anisakiasis.
YR 2024
FD 2024
LK http://riull.ull.es/xmlui/handle/915/36846
UL http://riull.ull.es/xmlui/handle/915/36846
LA es
DS Repositorio institucional de la Universidad de La Laguna
RD 16-jul-2024