Infection in the Spotted Flounder (Pleuronectiformes: Citharidae) Caught in the Gulf of Cadiz (Area FAO 27-ICES IXa) Appears to Negatively Affect Fish Growth

Overview

Journal Pathogens

Date 2022 Dec 23

PMID 36558766

Authors

Manuel Morales-Yuste

Waldo Sanchez-Yebra

Mario Garrido

Rocio Benitez

Francisco Javier Adroher

Affiliations

Soon will be listed here.

Abstract

Spotted flounder ( L.) caught in the Gulf of Cadiz (area FAO 27 ICES IXa) were examined for larvae and to assess the possible risk of anisakiasis in humans through consumption of this fish. Larvae of the genera and were identified in the analysis of 128 purchased fish specimens. All larvae corresponded to type I. Molecular analysis showed the presence of , s.s., and recombinant genotype between the two. The prevalence of was 9.4% with a mean intensity of 1.42, while for the values were 12.5% and 1.06. The length and weight of the fish, but not Fulton's condition factor, varied significantly between infected and uninfected fish. The prevalence of increased with fish length, with no fish parasitized with measuring less than 15.5 cm (2-2.5 years old), which is probably related to the reported dietary change of these fish at around 2 years of age. Fish not parasitized with any of these nematodes showed positive allometric growth, while those parasitized only with showed negative allometric growth. When comparing both groups including only fish ≥ 15.5 cm (the smallest size of -infected fish), the difference is shown to be statistically significant ( = 0.01), suggesting that infection of spotted flounder negatively affects fish growth even when parasite intensity is low, which may have important economic repercussions. Finally, the low prevalence and, above all, intensity of in these fish, as well as the habit of consuming this fish fried in oil in our geographical area, means that the risk of acquiring anisakiasis through consumption of this fish is low.

Citing Articles

Anisakiasis and Anisakidae.

Adroher F, Morales-Yuste M, Benitez R Pathogens. 2024; 13(2).

PMID: 38392886 PMC: 10892542. DOI: 10.3390/pathogens13020148.

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