Anisakis simplexcomplex (Nematoda: Anisakidae) in zooplankton communities from temperate NE Atlantic waters

Gregori, María; Roura, Álvaro; Abollo, Elvira; González, Ángel F.; Pascual, Santiago

doi:10.1080/00222933.2014.979260

Cited by 38 publications

(25 citation statements)

References 46 publications

(54 reference statements)

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“…Results revealed that all the fish species were parasitized by Anisakis type I larvae with a global prevalence of 33.65%. Anisakis species have been reported in a wide range of marine pelagic fish and cephalopods [16][17][18], most of them encompassing an important part of the human diet. As fish is considered a staple of the healthy diet, particularly in Spain [19], the results reported herein pinpoint the fish species with a high risk of infection.…”

Section: Discussionmentioning

confidence: 99%

Prevalence and Risk of Anisakid Larvae in Fresh Fish Frequently Consumed in Spain: An Overview

Debenedetti

Madrid

Trelis

et al. 2019

Fishes

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Anisakidosis is a fish-borne zoonosis caused by parasitic nematodes of the family Anisakidae, of which the species belonging to Anisakis simplex complex are the most representative. It is considered an emerging disease in Spain. The objective of this study is to analyse the presence of larvae in fish frequently consumed in Spanish supermarkets, inferring the risk of infection. In total 1,786 specimens of 9 different fish species, from two geographical origins (Atlantic and Mediterranean), acquired fresh and not eviscerated were examined for anisakid nematodes. Analysis showed that 33.7% of the samples were parasitized by Anisakis larvae. The horse mackerel (Trachurus trachurus) presented the highest total prevalence (66.0%), followed by the silver hake (Merluccius bilinearis) (59.5%), the mackerel (Scomber scombrus) (58.4%), the blue whiting (Micromesistius poutassou) (53.9%) and the European hake (Merlucius merlucius) (45.0%). In general, the prevalence was higher in Atlantic than in Mediterranean fish. In all the species analysed, a higher presence of the parasite was detected in the viscera than in the flesh, although in the most parasitized species a noteworthy prevalence and abundance was observed in the flesh. In conclusion, risk factors, like fish species and origin, should be considered by consumers, in addition of following the recommendations established by Commission Regulation (EU) No1276/2011 and the Spanish Royal Decree 1420/2006.

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Section: Discussionmentioning

confidence: 99%

Prevalence and Risk of Anisakid Larvae in Fresh Fish Frequently Consumed in Spain: An Overview

Debenedetti

Madrid

Trelis

et al. 2019

Fishes

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“…and of the A. simplex complex (A. simplex s.s. and A. pegreffii) in NW Iberian Peninsula waters (Gregori et al 2012(Gregori et al , 2015. It was additionally reported as intermediate host of A. simplex on the Scottish East Coast and of Hysterothylacium sp.…”

Section: Feeding and Transmission Pathwaysmentioning

confidence: 94%

Macroparasites of allis shad (Alosa alosa) and twaite shad (Alosa fallax) of the Western Iberian Peninsula Rivers: ecological, phylogenetic and zoonotic insights

et al. 2015

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Samples of anadromous Alosa alosa (Clupeidae) (n = 163) and Alosa fallax (Clupeidae) (n = 223), caught in Western Iberian Peninsula Rivers from 2008 to 2013, were examined for buccal, branchial and internal macroparasites, which were identified using morphological and molecular methods. Alosa alosa were infected with Anisakis simplex s.s., Anisakis pegreffii, Hysterothylacium aduncum, Rhadinorhynchus pristis, Mazocraes alosae, Hemiurus appendiculatus, Ceratothoa italica and an unidentified ergasilid copepod. Ceratothoa italica represents a new host record for A. alosa. Alosa fallax were infected with A. simplex s.s., A. pegreffii, H. aduncum, H. appendiculatus, Clavellisa emarginata and an unidentified cymothoid isopod. This is the first report of C. italica, C. emarginata and M. alosae in the Iberian Peninsula. The phylogenetic positions of M. alosae, H. appendiculatus and C. emarginata were assessed using 18S and 28S ribosomal RNA (rRNA); our contributions provide a better understanding of the phylogenetic relationships within their groups. Qualitative and quantitative differences in the parasite faunas of these two shad species are consistent with different feeding strategies. The results provide information about host migration behaviour and transmission pathways through diet during the marine trophic phase of the shad's life cycle and their roles as paratenic or final hosts and transporters of parasites between seawater and freshwater environments. The zoonotic parasites A. simplex s.s. and A. pegreffii pose a risk for consumers or riverine mammals (e.g. European otter). The use of parasites as biological tags for shad stocks in Western Iberian Rivers could be a useful approach in multidisciplinary studies concerning fish stock delimitation and characterization.

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“…Smith (1983) proposed that euphausiids were the major intermediate host of A. simplex s.l., in the northeast Atlantic and northern North Sea, and perhaps universally. Recently, Gregori et al (2015) detected the occurrence of larvae of A. simplex (s.s.) and A. pegreffii in the euphausiid Nyctiphanes couchii, justifying the co-occurrence of both species in the same fish species, and its sympatry in the northeast Atlantic. However, other invertebrate species were also indicated as host candidates for Anisakis species, such as copepods (eg.…”

Section: Discussionmentioning

confidence: 99%

Comparison of anisakid infection levels between two species of Atlantic mackerel (Scomber colias and S. scombrus) off the Atlantic Portuguese coast

et al. 2017

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Summary:Anisakiasis is a problematic zoonotic infection associated with the consumption of raw or undercooked fish. Atlantic mackerel (Scomber colias) is of high commercial interest in Portugal and has been reported as a common host of Anisakis spp. In this study, the occurrence of anisakids is evaluated in S. colias and also Scomber scombrus, and the potential zoonotic risk associated with consumption of these two fishes is evaluated according to the recorded infection levels. These were found to be high for both fish species: a mean intensity and prevalence of 21.7 worms/fish and 85% for S. colias, and 16.4 worms/fish and 83.3% for S. scombrus, respectively. No correlation was detected between anisakid intensity and host total length, total weight, condition factor, and hepatosomatic and gonadosomatic indices for both fish species, but significantly higher intensity values were detected for more mature S. scombrus, i.e. fish recording a higher gonadosomatic index. Molecular tools allowed the identification of two species of Anisakis, A. simplex (s.s.) and A. pegreffii. They differed in their occurrence: in S. colias the prevalence of A. simplex (s.s.) was 18% and that of A. pegreffii was 82%, whereas in S. scombrus the prevalence of A. simplex (s.s.) was 73% and that of A. pegreffii was 27%. Occasionally, worms of Hysterothylacium aduncum were identified for both fish. The different infection levels of the two Anisakis species in both hosts off the Portuguese coast raise the hypothesis of a different life cycle at the level of the invertebrate intermediate host. S. colias lives in deeper waters than S. scombrus, and the differences found in infection levels suggest that A. pegreffii main first intermediate host also live in deeper waters, compared with A. simplex (s.s.) main first intermediate host. The higher infection levels of A. simplex (s.s.) (most infectious to humans) in S. scombrus suggest that its consumption when slightly cooked, as in grilled fish (so popular in Portugal), could be more problematic for the development of anisakiasis in humans than the consumption of S. colias and thus be of potential public health concern.Keywords: anisakids; Anisakis pegreffii; Anisakis simplex (s.s.); Atlantic mackerels; Portuguese coast; molecular identification; food safety. Comparación de los niveles de infección de anisákidos entre dos especies de caballa del Atlántico (Scomber colias y S. scombrus), de la costa atlántica portuguesaResumen: La anisakiasis es una zoonosis problemática asociada con el consumo de pescado crudo o poco cocinado. La caballa del Atlántico (Scomber colias) es un pez de mayor interés comercial en Portugal y se ha informado que es un hospedador común de Anisakis spp. En este estudio, la incidencia de anisákidos se evalúa en S. colias y Scomber scombrus, y el potencial riesgo zoonótico asociado con el consumo de estos dos peces se evalúa de acuerdo a los niveles de infección registrados. Estos se encontraron altos para ambas especies de peces -intensidad media y la prevalencia de 21.7 gu...

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Anisakis simplexcomplex (Nematoda: Anisakidae) in zooplankton communities from temperate NE Atlantic waters

Cited by 38 publications

References 46 publications

Prevalence and Risk of Anisakid Larvae in Fresh Fish Frequently Consumed in Spain: An Overview

Prevalence and Risk of Anisakid Larvae in Fresh Fish Frequently Consumed in Spain: An Overview

Macroparasites of allis shad (Alosa alosa) and twaite shad (Alosa fallax) of the Western Iberian Peninsula Rivers: ecological, phylogenetic and zoonotic insights

Comparison of anisakid infection levels between two species of Atlantic mackerel (<em>Scomber colias</em> and <em >S. scombrus</em>) off the Atlantic Portuguese coast

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