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Koutsoumanis K, Allende A, Alvarez‐Ordóñez A, Bover‐Cid S, Chemaly M, De Cesare A, Herman L, Hilbert F, Lindqvist R, Nauta M, Nonno R, Peixe L, Ru G, Simmons M, Skandamis P, Suffredini E, Buchmann K, Careche M, Levsen A, Mattiucci S, Mladineo I, Santos MJ, Barcia‐Cruz R, Broglia A, Chuzhakina K, Goudjihounde SM, Guerra B, Messens W, Guajardo IM, Bolton D. Re-evaluation of certain aspects of the EFSA Scientific Opinion of April 2010 on risk assessment of parasites in fishery products, based on new scientific data. Part 1: ToRs1-3. EFSA J 2024; 22:e8719. [PMID: 38650612 PMCID: PMC11033839 DOI: 10.2903/j.efsa.2024.8719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024] Open
Abstract
Surveillance data published since 2010, although limited, showed that there is no evidence of zoonotic parasite infection in market quality Atlantic salmon, marine rainbow trout, gilthead seabream, turbot, meagre, Atlantic halibut, common carp and European catfish. No studies were found for greater amberjack, brown trout, African catfish, European eel and pikeperch. Anisakis pegreffii, A. simplex (s. s.) and Cryptocotyle lingua were found in European seabass, Atlantic bluefin tuna and/or cod, and Pseudamphistomum truncatum and Paracoenogonimus ovatus in tench, produced in open offshore cages or flow-through ponds or tanks. It is almost certain that fish produced in closed recirculating aquaculture systems (RAS) or flow-through facilities with filtered water intake and exclusively fed heat-treated feed are free of zoonotic parasites. Since the last EFSA opinion, the UV-press and artificial digestion methods have been developed into ISO standards to detect parasites in fish, while new UV-scanning, optical, molecular and OMICs technologies and methodologies have been developed for the detection, visualisation, isolation and/or identification of zoonotic parasites in fish. Freezing and heating continue to be the most efficient methods to kill parasites in fishery products. High-pressure processing may be suitable for some specific products. Pulsed electric field is a promising technology although further development is needed. Ultrasound treatments were not effective. Traditional dry salting of anchovies successfully inactivated Anisakis. Studies on other traditional processes - air-drying and double salting (brine salting plus dry salting) - suggest that anisakids are successfully inactivated, but more data covering these and other parasites in more fish species and products is required to determine if these processes are always effective. Marinade combinations with anchovies have not effectively inactivated anisakids. Natural products, essential oils and plant extracts, may kill parasites but safety and organoleptic data are lacking. Advanced processing techniques for intelligent gutting and trimming are being developed to remove parasites from fish.
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Population Genetic Structure of Anisakis simplex Infecting the European Hake from North East Atlantic Fishing Grounds. Animals (Basel) 2023; 13:ani13020197. [PMID: 36670737 PMCID: PMC9854729 DOI: 10.3390/ani13020197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 12/28/2022] [Accepted: 12/29/2022] [Indexed: 01/06/2023] Open
Abstract
The European hake, one of the most commercially valuable species in ICES fishing areas, is considered an important neglected source of zoonotic risk by nematode parasites belonging to the genus Anisakis. Merluccius merluccius is, by far, the most important host of Anisakis spp. at the European fishing grounds, in terms of demographic infection values, and carries the highest parasite burden. These high parasite population densities within an individual fish host offer a chance to explore new sources of variations for the genetic structure of Anisakis spp. populations. A total of 873 Anisakis spp. third-stage larvae, originally sampled from viscera and muscular sections of hake collected at ten fishing grounds, were primarily identified using ITS rDNA region as molecular marker. After that, we used mtDNA cox2 gene to reveal the high haplotype diversity and the lack of genetic structure for A. simplex. Dominant haplotypes were shared among the different fishing areas and fish sections analyzed. Results indicate a clear connection of A. simplex from European hake along the Northern North Sea to the Portuguese coast, constituting a single genetic population but revealing a certain level of genetic sub-structuring on the Northwest coast of Scotland. This study also provides useful information to advance the understanding of parasite speciation to different fish host tissues or microenvironments.
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Morphological and Molecular Identification of Anisakis spp. (Nematoda: Anisakidae) in Commercial Fish from the Canary Islands Coast (Spain): Epidemiological Data. Animals (Basel) 2022; 12:ani12192634. [PMID: 36230375 PMCID: PMC9559264 DOI: 10.3390/ani12192634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/20/2022] [Accepted: 09/24/2022] [Indexed: 11/17/2022] Open
Abstract
The study aimed to perform the molecular identification of Anisakis larvae in commercial fish from the coast of the Canary Islands and to provide data on their infection level for the host and the species of this nematode parasite that we could find in several species of commercial interest in the Canary Archipelago. Fish specimens (n = 172) from the Canary coasts were examined for parasites. In total, 495 larvae were identified; PCR was carried out for the entire ITS rDNA and cox2 mtDNA region, obtaining sixteen sequences for the entire ITS rDNA region and fifteen for the cox2 mtDNA, this being the first contribution of nucleotide sequences of Anisakis species of fish caught from the Canary Islands. An overall prevalence of 25% was obtained in the fish analyzed, and five species of Anisakis were identified, these being Anisakis simplex (s.s.), Anisakis pegreffii, Anisakis physeteris, Anisakis nascettii and Anisakis typica and the hybrid Anisakis simplex x Anisakis pegreffii. The results obtained in this study have relevance for public health, since the pathology will depend on the species of Anisakis, so it is important to know the health status of fish in the waters of the Canary Islands to assure a safer consumption and take adequate measures, in addition to the provision of epidemiological data.
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Cipriani P, Palomba M, Giulietti L, Marcer F, Mazzariol S, Santoro M, Alburqueque RA, Covelo P, López A, Santos MB, Pierce GJ, Brownlow A, Davison NJ, McGovern B, Frantzis A, Alexiadou P, Højgaard DP, Mikkelsen B, Paoletti M, Nascetti G, Levsen A, Mattiucci S. Distribution and genetic diversity of Anisakis spp. in cetaceans from the Northeast Atlantic Ocean and the Mediterranean Sea. Sci Rep 2022; 12:13664. [PMID: 35953527 PMCID: PMC9372146 DOI: 10.1038/s41598-022-17710-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 07/29/2022] [Indexed: 11/09/2022] Open
Abstract
Parasite biodiversity in cetaceans represents a neglected component of the marine ecosystem. This study aimed to investigate the distribution and genetic diversity of anisakid nematodes of the genus Anisakis sampled in cetaceans from the Northeast Atlantic Ocean and the Mediterranean Sea. A total of 478 adults and pre-adults of Anisakis spp. was identified by a multilocus genetic approach (mtDNA cox2, EF1 α − 1 nDNA and nas 10 nDNA gene loci) from 11 cetacean species. A clear pattern of host preference was observed for Anisakis spp. at cetacean family level: A. simplex (s.s.) and A. pegreffii infected mainly delphinids; A. physeteris and A. brevispiculata were present only in physeterids, and A. ziphidarum occurred in ziphiids. The role of cetacean host populations from different waters in shaping the population genetic structure of A. simplex (s.s.), A. pegreffii and A. physeteris was investigated for the first time. Significant genetic sub-structuring was found in A. simplex (s.s.) populations of the Norwegian Sea and the North Sea compared to those of the Iberian Atlantic, as well as in A. pegreffii populations of the Adriatic and the Tyrrhenian Seas compared to those of the Iberian Atlantic waters. Substantial genetic homogeneity was detected in the Mediterranean Sea population of A. physeteris. This study highlights a strong preference by some Anisakis spp. for certain cetacean species or families. Information about anisakid biodiversity in their cetacean definitive hosts, which are apex predators of marine ecosystems, acquires particular importance for conservation measures in the context of global climate change phenomena.
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Affiliation(s)
- Paolo Cipriani
- Department of Public Health and Infectious Diseases, Section of Parasitology, Sapienza University of Rome, Rome, Italy. .,Institute of Marine Research (IMR), Nordnes, Bergen, Norway.
| | - Marialetizia Palomba
- Department of Ecological and Biological Sciences (DEB), Tuscia University, Viterbo, Italy
| | | | - Federica Marcer
- Department of Animal Medicine, Production and Health, Padova University, Padova, Italy
| | - Sandro Mazzariol
- Department of Animal Medicine, Production and Health, Padova University, Padova, Italy
| | - Mario Santoro
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Renato Aco Alburqueque
- Department of Public Health and Infectious Diseases, Section of Parasitology, Sapienza University of Rome, Rome, Italy
| | - Pablo Covelo
- Coordinadora para o Estudo dos Mamíferos Mariños CEMMA, Gondomar, Pontevedra, Spain
| | - Alfredo López
- Coordinadora para o Estudo dos Mamíferos Mariños CEMMA, Gondomar, Pontevedra, Spain.,Departamento de Biología & CESAM, Universidade de Aveiro, Aveiro, Portugal
| | - M Begoña Santos
- Instituto Español de Oceanografía, Centro Oceanográfico de Vigo, Vigo, Spain
| | | | - Andrew Brownlow
- Scottish Marine Animal Scheme, Institute of Biodiversity, Animal Health & Comparative Medicine, University of Glasgow, Glasgow, UK
| | - Nicholas J Davison
- Scottish Marine Animal Scheme, Institute of Biodiversity, Animal Health & Comparative Medicine, University of Glasgow, Glasgow, UK
| | | | | | | | | | - Bjarni Mikkelsen
- Faroe Marine Research Institute (Havstovan), Tórshavn, Faroe Islands
| | - Michela Paoletti
- Department of Ecological and Biological Sciences (DEB), Tuscia University, Viterbo, Italy
| | - Giuseppe Nascetti
- Department of Ecological and Biological Sciences (DEB), Tuscia University, Viterbo, Italy
| | - Arne Levsen
- Institute of Marine Research (IMR), Nordnes, Bergen, Norway
| | - Simonetta Mattiucci
- Department of Public Health and Infectious Diseases, Section of Parasitology, Sapienza University of Rome, Rome, Italy.
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Proteomic Profiling and In Silico Characterization of the Secretome of Anisakis simplex Sensu Stricto L3 Larvae. Pathogens 2022; 11:pathogens11020246. [PMID: 35215189 PMCID: PMC8879239 DOI: 10.3390/pathogens11020246] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/09/2022] [Accepted: 02/10/2022] [Indexed: 02/04/2023] Open
Abstract
Anisakis simplex sensu stricto (s.s.) L3 larvae are one of the major etiological factors of human anisakiasis, which is one of the most important foodborne parasitic diseases. Nevertheless, to date, Anisakis secretome proteins, with important functions in nematode pathogenicity and host-parasite interactions, have not been extensively explored. Therefore, the aim of this study was to identify and characterize the excretory-secretory (ES) proteins of A. simplex L3 larvae. ES proteins of A. simplex were subjected to liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis, and the identified proteins were then analyzed using bioinformatics tools. A total of 158 proteins were detected. Detailed bioinformatic characterization of ES proteins was performed, including Gene Ontology (GO) analysis, identification of enzymes, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways analysis, protein family classification, secretory pathway prediction, and detection of essential proteins. Furthermore, of all detected ES proteins, 1 was identified as an allergen, which was Ani s 4, and 18 were potential allergens, most of which were homologs of nematode and arthropod allergens. Nine potential pathogenicity-related proteins were predicted, which were predominantly homologs of chaperones. In addition, predicted host-parasite interactions between the Anisakis ES proteins and both human and fish proteins were identified. In conclusion, this study represents the first global analysis of Anisakis ES proteins. The findings provide a better understanding of survival and invasion strategies of A. simplex L3 larvae.
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Bello E, Palomba M, Webb SC, Paoletti M, Cipriani P, Nascetti G, Mattiucci S. Investigating the genetic structure of the parasites Anisakis pegreffii and A. berlandi (Nematoda: Anisakidae) in a sympatric area of the southern Pacific Ocean waters using a multilocus genotyping approach: first evidence of their interspecific hybridization. INFECTION GENETICS AND EVOLUTION 2021; 92:104887. [PMID: 33940197 DOI: 10.1016/j.meegid.2021.104887] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/21/2021] [Accepted: 04/26/2021] [Indexed: 10/21/2022]
Abstract
The southern Pacific Ocean, off the New Zealand coast, has been reported as one sympatric area of the two parasite species Anisakis pegreffii and A. berlandi. Here, a multilocus genotyping approach, based on a panel of eleven DNA microsatellite (SSR) loci plus the sequences analysis of the nuclear nas10 nDNA and the mitochondrial mtDNA cox2 gene loci, was applied to a total of N = 344 adults and larvae of Anisakis spp. from cetacean and fish species, respectively. Out of the newly scored SSR loci, Anisl 15 and Anisl 2 showed fixed alternative alleles between A. pegreffii and A. berlandi resulting as 100% diagnostic loci. Out of SSRs Anisl 00314 and Anisl 7 previously disclosed, two additional loci, i.e., Anisl 4 and Anisl 22, were found to be sex-linked. The Bayesian genotypes clustering approach (STRUCTURE) allowed identification, with a 100% of probability value, N = 208 specimens to the "pure parental" A. pegreffii, N = 133 to the "pure parental" A. berlandi, while one adult and two larval stages showed mixed ancestry between the two groups having, in all cases, a Q-value = 0.50. NEWHYBRIDS analysis assigned (100% of probability) those specimens to their F1 hybrid category. This represents the first evidence of contemporary hybridization between the two parasite species in a sympatric area. The pairwise FST values estimated at intraspecific and interspecific level, inferred from both SSR loci and mitochondrial mtDNA cox2 sequences, have also demonstrated the existence of two distinct panmictic units in this study area, corresponding respectively to A. pegreffii and A. berlandi. The results obtained support the useful application of a multilocus approach in the identification of sibling species and their hybrid categories in sympatric areas. The possible use of sex-linked SSR loci of the two species of the A. simplex (s. l.), for sex determination of their larval stages, is also suggested.
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Affiliation(s)
- Eleonora Bello
- Department of Biological and Ecological Sciences, Tuscia University, Viale dell'Università snc, 01100 Viterbo, Italy; Department of Public Health and Infectious Diseases, Section of Parasitology, Sapienza University of Rome, Laboratory affiliated to "Istituto Pasteur Italy - Fondazione Cenci-Bolognetti", P.le Aldo Moro 5, 00185 Rome, Italy
| | - Marialetizia Palomba
- Department of Public Health and Infectious Diseases, Section of Parasitology, Sapienza University of Rome, Laboratory affiliated to "Istituto Pasteur Italy - Fondazione Cenci-Bolognetti", P.le Aldo Moro 5, 00185 Rome, Italy; Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale 1, 80121 Naples, Italy
| | | | - Michela Paoletti
- Department of Biological and Ecological Sciences, Tuscia University, Viale dell'Università snc, 01100 Viterbo, Italy
| | | | - Giuseppe Nascetti
- Department of Biological and Ecological Sciences, Tuscia University, Viale dell'Università snc, 01100 Viterbo, Italy
| | - Simonetta Mattiucci
- Department of Public Health and Infectious Diseases, Section of Parasitology, Sapienza University of Rome, Laboratory affiliated to "Istituto Pasteur Italy - Fondazione Cenci-Bolognetti", P.le Aldo Moro 5, 00185 Rome, Italy.
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Safonova AE, Voronova AN, Vainutis KS. First report on molecular identification of Anisakis simplex in Oncorhynchus nerka from the fish market, with taxonomical issues within Anisakidae. J Nematol 2021; 53:e2021-023. [PMID: 33860240 PMCID: PMC8039977 DOI: 10.21307/jofnem-2021-023] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Indexed: 11/11/2022] Open
Abstract
Alive anisakids cause acute gastrointestinal diseases, and dead worms contained in food can provoke sensibilization and allergic reactions in humans. Detected in the purchased minced salmon Oncorhynchus nerka nematodes were identified as Anisakis simplex sensu stricto (Anisakidae). We found that recently published phylogenetic trees (reconstructed using different ribosomal and mitochondrial genetic markers) showed independent clusterization of species recognized in the A. simplex sensu lato species complex. This prompted us to undertake this full-fledged molecular genetics study of anisakids from Kamchatka with phylogenetic reconstructions (NJ/ML) and calculated ranges of interspecific and intergeneric p-distances using ITS1-5.8S-ITS2 sequences. We confirmed that molecular markers based on the ITS region of rDNA were able to recognize ‘pure’ specimens belonging to the cryptic species. We offer new insights into the systematics of anisakids. The genus Anisakis sensu stricto should include Anisakis simplex sensu stricto, Anisakis pegreffii, Anisakis berlandi, Anisakis ziphidarum, and Anisakis nascettii. Presumably, two genera should be restored in the structure of the subfamily Anisakinae: Skrjabinisakis for the species Anisakis paggiae, Anisakis brevispiculata, and Anisakis physeteris; and Peritrachelius for the species Anisakis typica. In addition, we provide the short annotated list of some genera of the family Anisakidae, including their diagnoses.
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Affiliation(s)
- Alina E Safonova
- Far Eastern Federal University, Sukhanova Street, 8, Vladivostok, Russia
| | - Anastasia N Voronova
- Federal Scientific Center of the East Asia Terrestrial Biodiversity FEB RAS, pr. 100-letija, 159, Vladivostok, Russia
| | - Konstantin S Vainutis
- Federal Scientific Center of the East Asia Terrestrial Biodiversity FEB RAS, pr. 100-letija, 159, Vladivostok, Russia
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Santoro M, Palomba M, Mattiucci S, Osca D, Crocetta F. New Parasite Records for the Sunfish Mola mola in the Mediterranean Sea and Their Potential Use as Biological Tags for Long-Distance Host Migration. Front Vet Sci 2020; 7:579728. [PMID: 33195589 PMCID: PMC7641614 DOI: 10.3389/fvets.2020.579728] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 09/11/2020] [Indexed: 11/13/2022] Open
Abstract
Studies describing the parasite fauna of sunfish species from the Mediterranean Sea are to date limited, despite information gained through parasitological examination may reveal unknown ecological and biological aspects of both hosts and parasites. Moreover, recent molecular studies on sunfish taxonomy revealed the presence of two species belonging to the genus Mola in the Mediterranean basin, namely M. mola and M. alexandrini. These two fish taxa have long been synonymized or confused among them, which implies that the majority of the studies carried out so far reported the parasites infecting both species under a single host species, generally referred to as M. mola. We hereby investigated the parasite fauna of a 43 cm long M. mola specimen from the Mediterranean Sea, whose identification was confirmed by molecular tool, and provided the first evidence of the occurrence of the nematode Anisakis simplex (s.s.) and of the cestode Gymnorhynchus isuri in Mola species anywhere. The use of helminth species as biological tags for the sunfish is also discussed.
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Affiliation(s)
- Mario Santoro
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Marialetizia Palomba
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - Simonetta Mattiucci
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
| | - David Osca
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Fabio Crocetta
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Naples, Italy
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Wang H, Fu Y, Gu P, Zhang Y, Tu W, Chao Z, Wu H, Cao J, Zhou X, Liu B, Michal JJ, Fan C, Tan Y. Genome-Wide Characterization and Comparative Analyses of Simple Sequence Repeats among Four Miniature Pig Breeds. Animals (Basel) 2020; 10:ani10101792. [PMID: 33023098 PMCID: PMC7600727 DOI: 10.3390/ani10101792] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/15/2020] [Accepted: 09/28/2020] [Indexed: 12/13/2022] Open
Abstract
Simple Summary Simple sequence repeats (SSRs) are present at high densities in regulatory elements, suggesting that they may affect gene function and phenotypic traits. Therefore, SSRs can be exploited in marker-assisted selection. In addition, they can be widely used as molecular markers to study genetic diversity, population structure, and evolution. While SSRs have been widely studied in many mammalian species, very little research has focused on genome-wide SSRs of miniature pigs, a small but special group of pigs that express the dwarf phenotype. Based on the SSR-enriched library building and sequencing, about 30,000 novel polymorphic SSRs for four miniature pig breeds were mapped to the Duroc pig reference genome. The four miniature pig breeds had different numbers and types of SSRs and distributions of repeat units. There were 2518 polymorphic SSRs in the intron or exon regions that were common to all four breeds and functional analyses revealed 17 genes that were associated with body size and other genes that were associated with growth and development. In conclusion, the SSRs detected in the miniature pigs in this study may provide useful genetic markers for the selection of farm animals and the polymorphic SSRs provide valuable insights into the determination of mature body size, as well as the immunity, growth and development of animals. Abstract Simple sequence repeats (SSRs) are commonly used as molecular markers in research on genetic diversity and discrimination among taxa or breeds because polymorphisms in these regions contribute to gene function and phenotypically important traits. In this study, we investigated genome-wide characteristics, repeat units, and polymorphisms of SSRs using sequencing data from SSR-enriched libraries created from Wuzhishan (WZS), Bama (BM), inbred Luchuan (LC) and Zangxiang (ZX) miniature pig breeds. The numbers and types of SSRs, distributions of repeat units and polymorphic SSRs varied among the four breeds. Compared to the Duroc pig reference genome, 2518 polymorphic SSRs were unique and common to all four breeds and functional annotation revealed that they may affect the coding and regulatory regions of genes. Several examples, such as FGF23, MYF6, IGF1R, and LEPROT, are associated with growth and development in pigs. Three of the polymorphic SSRs were selected to confirm the polymorphism and the corresponding alleles through fluorescence polymerase chain reaction (PCR) and capillary electrophoresis. Together, this study provides useful insights into the discovery, characteristics and distribution of SSRs in four pig breeds. The polymorphic SSRs, especially those common and unique to all four pig breeds, might affect associated genes and play important roles in growth and development.
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Affiliation(s)
- Hongyang Wang
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (H.W.); (Y.Z.); (W.T.); (H.W.); (J.C.)
- Shanghai Engineering Research Center of Breeding Pig, Shanghai 201302, China
| | - Yang Fu
- Research Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China;
| | - Peng Gu
- Institute of Comparative Medicine & Laboratory Animal Management Center, Southern Medical University, Guangzhou 510515, China;
| | - Yingying Zhang
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (H.W.); (Y.Z.); (W.T.); (H.W.); (J.C.)
- Shanghai Engineering Research Center of Breeding Pig, Shanghai 201302, China
| | - Weilong Tu
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (H.W.); (Y.Z.); (W.T.); (H.W.); (J.C.)
- Shanghai Engineering Research Center of Breeding Pig, Shanghai 201302, China
| | - Zhe Chao
- Institute of Animal Science and Veterinary Medicine, Hainan Academy of Agricultural Sciences, Haikou 571100, China;
| | - Huali Wu
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (H.W.); (Y.Z.); (W.T.); (H.W.); (J.C.)
- Shanghai Engineering Research Center of Breeding Pig, Shanghai 201302, China
| | - Jianguo Cao
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (H.W.); (Y.Z.); (W.T.); (H.W.); (J.C.)
- Shanghai Engineering Research Center of Breeding Pig, Shanghai 201302, China
| | - Xiang Zhou
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; (X.Z.); (B.L.)
| | - Bang Liu
- Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; (X.Z.); (B.L.)
| | - Jennifer J. Michal
- Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA;
| | - Chun Fan
- Shanghai Laboratory Animal Research Center, Shanghai 201203, China;
| | - Yongsong Tan
- Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (H.W.); (Y.Z.); (W.T.); (H.W.); (J.C.)
- Shanghai Engineering Research Center of Breeding Pig, Shanghai 201302, China
- Correspondence: ; Tel.: +86-021-34505325
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D’Amelio S, Lombardo F, Pizzarelli A, Bellini I, Cavallero S. Advances in Omic Studies Drive Discoveries in the Biology of Anisakid Nematodes. Genes (Basel) 2020; 11:E801. [PMID: 32679891 PMCID: PMC7397233 DOI: 10.3390/genes11070801] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/10/2020] [Accepted: 07/13/2020] [Indexed: 01/28/2023] Open
Abstract
Advancements in technologies employed in high-throughput next-generation sequencing (NGS) methods are supporting the spread of studies that, combined with advances in computational biology and bioinformatics, have greatly accelerated discoveries within basic and biomedical research for many parasitic diseases. Here, we review the most updated "omic" studies performed on anisakid nematodes, a family of marine parasites that are causative agents of the fish-borne zoonosis known as anisakiasis or anisakidosis. Few deposited data on Anisakis genomes are so far available, and this still hinders the deep and highly accurate characterization of biological aspects of interest, even as several transcriptomic and proteomic studies are becoming available. These have been aimed at discovering and characterizing molecules specific to peculiar developmental parasitic stages or tissues, as well as transcripts with pathogenic potential as toxins and allergens, with a broad relevance for a better understanding of host-pathogen relationships and for the development of reliable diagnostic tools.
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Affiliation(s)
| | | | | | | | - Serena Cavallero
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy; (S.D.); (F.L.); (A.P.); (I.B.)
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11
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Gómez-Mateos M, Merino-Espinosa G, Corpas-López V, Valero-López A, Martín-Sánchez J. A multi-restriction fragment length polymorphism genotyping approach including the beta-tubulin gene as a new differential nuclear marker for the recognition of the cryptic species Anisakis simplex s.s. and Anisakis pegreffii and their hybridization events. Vet Parasitol 2020; 283:109162. [PMID: 32559582 DOI: 10.1016/j.vetpar.2020.109162] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 05/29/2020] [Accepted: 05/30/2020] [Indexed: 12/01/2022]
Abstract
The detection of Anisakis simplex s.s./A. pegreffii putative hybrids has been a controversial issue in spite of the fact that natural hybridization is an extended process across free living and parasitic organisms. Differential traits of biomedical and ecological importance, such as invasive and allergenic potential have been demonstrated in both cryptic species. Therefore, in this work, we discuss about the potential for hybridization between these anisakid species in sympatric zones, implementing a multi-marker Restriction fragment length polymorphism (RFLP) genotyping approach based on the ribosomal DNA internal transcribed spacer 1 (ITS1), the mitochondrial cytochrome C oxidase 2 (Cox-2) and a new nuclear marker, the highly conserved β-tubulin gene (β-TUB). The two cryptic species differed at least in 7 bp in the β-TUB gene and some larvae with heterozygous genotypes at the 7 diagnostic nucleotide positions were found. Taxonomic, population and genealogical analyses served to support the occurrence of hybridization between both species. Predicted restriction endonucleases enzymes were assayed for Cox-2 and β-TUB markers. The implemented multi-marker PCR-RFLP allowed us to detect the two pure parental species, F1 hybrids, hybrid backcrossed progeny and individuals with nuclear-mitochondrial discordance, being a useful, simple and reproducible procedure in any laboratory for epidemiological studies.
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Affiliation(s)
- Magdalena Gómez-Mateos
- Department of Parasitology, Faculty of Pharmacy, University of Granada, Campus Universitario de Cartuja, 18.071, Granada, Spain.
| | - Gema Merino-Espinosa
- Department of Parasitology, Faculty of Pharmacy, University of Granada, Campus Universitario de Cartuja, 18.071, Granada, Spain
| | - Victoriano Corpas-López
- Department of Parasitology, Faculty of Pharmacy, University of Granada, Campus Universitario de Cartuja, 18.071, Granada, Spain
| | - Adela Valero-López
- Department of Parasitology, Faculty of Pharmacy, University of Granada, Campus Universitario de Cartuja, 18.071, Granada, Spain
| | - Joaquina Martín-Sánchez
- Department of Parasitology, Faculty of Pharmacy, University of Granada, Campus Universitario de Cartuja, 18.071, Granada, Spain.
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Palomba M, Paoletti M, Webb SC, Nascetti G, Mattiucci S. A novel nuclear marker and development of an ARMS-PCR assay targeting the metallopeptidase 10 (nas 10) locus to identify the species of the Anisakis simplex (s. l.) complex (Nematoda, Anisakidae). ACTA ACUST UNITED AC 2020; 27:39. [PMID: 32452357 PMCID: PMC7249699 DOI: 10.1051/parasite/2020033] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 04/30/2020] [Indexed: 12/20/2022]
Abstract
The genus Anisakis represents one of the most widespread groups of ascaridoid nematodes in the marine ecosystem. Three closely related taxa are recognized in the Anisakis simplex (s. l.) complex: A. pegreffii, A. simplex (s. s.) and A. berlandi. They are widely distributed in populations of their intermediate/paratenic hosts (fish and squids) and definitive hosts (cetaceans). A novel nuclear gene locus, metallopeptidase 10 (nas 10) (451 bp), was sequenced and validated on a total of 219 specimens of the three species of Anisakis, collected in fish and cetacean hosts from allopatric areas included in their ranges of distribution. The specimens of Anisakis were first identified by allozymes and sequence analysis of the mtDNA cox2 and EF1α-1 nDNA. The novel nuclear marker has shown fixed alternative nucleotide positions in the three species, i.e. diagnostic at 100%, permitting the species determination of a large number of specimens analyzed in the present study. In addition, primers to be used for amplification-refractory mutation system (ARMS) PCR of the same gene locus were designed at these nucleotide positions. Thus, direct genotyping determination, by double ARMS, was developed and validated on 219 specimens belonging to the three species. Complete concordance was observed between the tetra-primer ARMS-PCR assays and direct sequencing results obtained for the nas 10 gene locus. The novel nuclear diagnostic marker will be useful in future studies on a multi-locus genotyping approach and also to study possible hybridization and/or introgression events occurring between the three species in sympatric areas.
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Affiliation(s)
- Marialetizia Palomba
- Department of Public Health and Infectious Diseases, Section of Parasitology, "Sapienza - University of Rome", Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Michela Paoletti
- Department of Ecological and Biological Sciences, Tuscia University, Viale dell'Università s/n, 01100 Viterbo, Italy
| | - Stephen C Webb
- Cawthron Institute, 98 Halifax Street East, Nelson 7010, New Zealand
| | - Giuseppe Nascetti
- Department of Ecological and Biological Sciences, Tuscia University, Viale dell'Università s/n, 01100 Viterbo, Italy
| | - Simonetta Mattiucci
- Department of Public Health and Infectious Diseases, Section of Parasitology, "Sapienza - University of Rome", Piazzale Aldo Moro 5, 00185 Rome, Italy
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Bello E, Paoletti M, Webb SC, Nascetti G, Mattiucci S. Cross-species utility of microsatellite loci for the genetic characterisation of Anisakis berlandi (Nematoda: Anisakidae). ACTA ACUST UNITED AC 2020; 27:9. [PMID: 32043965 PMCID: PMC7011781 DOI: 10.1051/parasite/2020004] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 01/20/2020] [Indexed: 11/14/2022]
Abstract
Eight microsatellite loci, recently developed in the species Anisakis pegreffii, were successfully amplified in Anisakis berlandi, sibling species of the A. simplex (s. l.) complex. They were validated on adult specimens (n = 46) of the parasite species, collected from two individuals of the definitive host, the long-finned pilot whale Globicephala melas from New Zealand waters. Among the eight loci scored, one, Anisl 07132, had null alleles in A. berlandi and was thus excluded from the subsequent genetic analysis. Two loci, Anisl 00314 and Anisl 10535, were monomorphic. In addition, as also previously detected in the other species of the A. simplex (s. l.) complex, the Anisl 7 locus was seen to be sex-linked, showing hemizygosity in male specimens. Differential allele frequency distributions of A. berlandi, with respect to those previously observed in A. pegreffii and A. simplex (s. s.), were found at some microsatellite loci. The Anisl 7 locus provided 100% diagnosis between A. berlandi and A. pegreffii, while others resulted in 99% diagnosis between A. berlandi and the other two species. Simple sequence repeat (SSR) loci also allowed us to estimate the genetic differentiation of A. berlandi from A. pegreffii (F st ≈ 0.45, Dc = 0.82) and A. simplex (s. s.) (F st ≈ 0.57, Dc = 0.73). The results suggest that SSRs provide a set of candidate markers for population genetics analysis of A. berlandi, as well as for the investigation, through a multi-locus genotyping approach, of possible patterns of hybridisation/introgression events between A. berlandi and the other two Anisakis species in sympatric conditions.
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Affiliation(s)
- Eleonora Bello
- Department of Public Health and Infectious Diseases, Section of Parasitology, Sapienza-University of Rome, P.le Aldo Moro 5, 00185 10 Rome, Italy - Department of Ecological and Biological Sciences, Tuscia University, Viale dell'Università s/n, 01100 Viterbo, Italy
| | - Michela Paoletti
- Department of Ecological and Biological Sciences, Tuscia University, Viale dell'Università s/n, 01100 Viterbo, Italy
| | - Stephen C Webb
- Cawthron Institute, 98 Halifax Street East, The Wood, 7010 Nelson, New Zealand
| | - Giuseppe Nascetti
- Department of Ecological and Biological Sciences, Tuscia University, Viale dell'Università s/n, 01100 Viterbo, Italy
| | - Simonetta Mattiucci
- Department of Public Health and Infectious Diseases, Section of Parasitology, Sapienza-University of Rome, P.le Aldo Moro 5, 00185 10 Rome, Italy
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Novel polymorphic microsatellite loci in Anisakis pegreffii and A. simplex (s. s.) (Nematoda: Anisakidae): implications for species recognition and population genetic analysis. Parasitology 2019; 146:1387-1403. [PMID: 31196233 DOI: 10.1017/s003118201900074x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The species of Anisakis constitute one of the most widespread groups of ascaridoid nematodes in the marine ecosystem. Three closely related taxa are recognised in the A. simplex (s. l.) complex, i.e. A. pegreffii, A. simplex (s. s.) and A. berlandi. They are distributed in populations of their intermediate/paratenic (fish and squids) and definitive (cetaceans) hosts. A panel of seven microsatellite loci (Anisl 05784, Anisl 08059, Anisl 00875, Anisl 07132, Anisl 00314, Anisl 10535 and Anisl 00185), were developed and validated on a total of N = 943 specimens of A. pegreffii and A. simplex (s. s.), collected in fish and cetacean hosts from allopatric areas within the range of distribution of these parasite species. In addition, the locus Anisl 7, previously detected in those Anisakis spp., was investigated. The parasites were first identified by sequence analysis of the EF1 α-1 nDNA. The panel of the microsatellites loci here developed have allowed to: (i) detect diagnostic microsatellite loci between the two species; (ii) identify specimens of the two species A. pegreffii, A. simplex (s. s.) in a multi-marker nuclear genotyping approach; (iii) discover two sex-linked loci in both Anisakis species and (iv) estimate levels of genetic differentiation at both the inter- and intra-specific level.
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Mattiucci S, Cipriani P, Levsen A, Paoletti M, Nascetti G. Molecular Epidemiology of Anisakis and Anisakiasis: An Ecological and Evolutionary Road Map. ADVANCES IN PARASITOLOGY 2018. [PMID: 29530312 DOI: 10.1016/bs.apar.2017.12.001] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review addresses the biodiversity, biology, distribution, ecology, epidemiology, and consumer health significance of the so far known species of Anisakis, both in their natural hosts and in human accidental host populations, worldwide. These key aspects of the Anisakis species' biology are highlighted, since we consider them as main driving forces behind which most of the research in this field has been carried out over the past decade. From a public health perspective, the human disease caused by Anisakis species (anisakiasis) appears to be considerably underreported and underestimated in many countries or regions around the globe. Indeed, when considering the importance of marine fish species as part of the everyday diet in many coastal communities around the globe, there still exist significant knowledge gaps as to local epidemiological and ecological drivers of the transmission of Anisakis spp. to humans. We further identify some key knowledge gaps related to Anisakis species epidemiology in both natural and accidental hosts, to be filled in light of new 'omic' technologies yet to be fully developed. Moreover, we suggest that future Anisakis research takes a 'holistic' approach by integrating genetic, ecological, immunobiological, and environmental factors, thus allowing proper assessment of the epidemiology of Anisakis spp. in their natural hosts, in human populations, and in the marine ecosystem, in both space and time.
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Mladineo I, Bušelić I, Hrabar J, Vrbatović A, Radonić I. Population parameters and mito-nuclear mosaicism of Anisakis spp. in the Adriatic Sea. Mol Biochem Parasitol 2017; 212:46-54. [DOI: 10.1016/j.molbiopara.2017.01.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 01/05/2017] [Accepted: 01/20/2017] [Indexed: 10/20/2022]
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