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Díez G, Santos M, Boyra G, Chust G, Santurtún M, Maceira A, Mendibil I, Bilbao E, Abaroa C. Variation in the levels of anisakid infection in the European anchovy Engraulis encrasicolus (Linnaeus) from the Bay of Biscay during the period 2000-2023 (ICES Subarea 8). Parasitol Res 2024; 123:95. [PMID: 38216829 DOI: 10.1007/s00436-023-08096-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 12/13/2023] [Indexed: 01/14/2024]
Abstract
The European anchovy Engraulis encrasicolus is one of the most important commercial species in the Bay of Biscay (ICES Subarea 8), and our analysis focused on the analysis of the temporal mean abundance, prevalence, and intensity of Anisakis spp. larvae species in anchovies from ICES Subarea 8 in the years 2000, 2001, 2014-2016, and 2019-2023. Prevalence in adult individuals of anchovy was only 1% in 2000 but increased to 90% in 2014. Since 2015, the prevalence has decreased, and the number of individuals affected in 2023 accounted for 17.6%. The mean abundance showed a similar trend, with a peak of 3.79 nematodes/anchovy in 2014, falling to 0.21 in 2023. The species A. simplex sensu stricto and A. pegreffii were identified by PCR/SANGER sequencing and PCR/RLFP techniques in 2019 and 2020. Anisakis simplex (s.s.) was the most abundant species and, according to the results returned by these two techniques, it accounted for an average of 62.4% and 52.1% of total nematodes in 2019 and 2020, respectively. The results of studies monitoring infection levels in anchovies showed that the mean abundance and prevalence changed over the course of the study period and that the proportion of different species of Anisakis is also subject to variation from year to year.
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Affiliation(s)
- Guzmán Díez
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Txatxarramendi Ugartea Z/G, 48395, Sukarrieta, Bizkaia, Spain.
| | - Maria Santos
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Txatxarramendi Ugartea Z/G, 48395, Sukarrieta, Bizkaia, Spain
| | - Guillermo Boyra
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Txatxarramendi Ugartea Z/G, 48395, Sukarrieta, Bizkaia, Spain
| | - Guillem Chust
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Txatxarramendi Ugartea Z/G, 48395, Sukarrieta, Bizkaia, Spain
| | - Marina Santurtún
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Txatxarramendi Ugartea Z/G, 48395, Sukarrieta, Bizkaia, Spain
| | - Arantza Maceira
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Txatxarramendi Ugartea Z/G, 48395, Sukarrieta, Bizkaia, Spain
| | - Iñaki Mendibil
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Txatxarramendi Ugartea Z/G, 48395, Sukarrieta, Bizkaia, Spain
| | - Elisabette Bilbao
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Txatxarramendi Ugartea Z/G, 48395, Sukarrieta, Bizkaia, Spain
| | - Carmen Abaroa
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Txatxarramendi Ugartea Z/G, 48395, Sukarrieta, Bizkaia, Spain
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Bouzid S, Es Saouini H, Chiaar A, Lioubi J, Chakir O, Benomar M, Rhattas C, Chbani I, Er-Raioui H. Preliminary data on the occurrence of PAH and Anisakis spp. in Moroccan anchovies: Environmental parasitology and human health risk. MARINE POLLUTION BULLETIN 2023; 194:115269. [PMID: 37437521 DOI: 10.1016/j.marpolbul.2023.115269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 06/27/2023] [Accepted: 07/04/2023] [Indexed: 07/14/2023]
Abstract
This survey focuses on an environmental parasitology study by investigating Polycyclic Aromatic Hydrocarbons (PAH) bioaccumulation and the occurrence of Anisakis spp. on common anchovies collected from Moroccan coasts over 9 months through chemical (PAH) and Biological (Biometrics and parasitic) analysis. Obtained results were statistically analyzed and human health risks from anchovies consumption were assessed. The results obtained highlighted the good biological and chemical status of this fish in all stations of Morocco's coasts. Anisakis spp. was present in only four stations in the Atlantic fringe (maximum prevalence 22.22 %). Results have shown non-significant differences for tissue nature (Muscle, viscera) or spatial variation and were within a low range of concentrations well below the European Commission standards. Results have shown no serious harmful risk for humans from this fish consumption (ILCR and HI), and statistical analysis had shown positive correlations between prevalence and Chr, prevalence and sex-ratio, and prevalence and weight.
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Affiliation(s)
- Saïda Bouzid
- EMRN, FSTT, Abdelmalek Essaâdi University, Morocco.
| | | | - Abderrahim Chiaar
- Specializing Center in aquatic animal pathology (SCAAP) of Tangier, Morocco
| | | | | | - Mostapha Benomar
- Regional Center of National Institute of Fisheries research, (INRH) of Tangier, Morocco
| | | | - Ikram Chbani
- EMRN, FSTT, Abdelmalek Essaâdi University, Morocco
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