Occurrence of Anisakid Nematodes in Walleye Pollock (Gadus chalcogrammus) Caught off the East Sea of Korea: Their Molecular Identification and Biological Implication

Nurhidayat, Septianto Wikan; Nam, U-Hwa; Kim, Jeong-Ho

doi:10.1007/s12601-018-0047-6

Cited by 3 publications

(4 citation statements)

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“…Since the 2000s, there have been several reports on the infection status of Anisakis in second intermediate hosts, such as fish and cephalopods, in Korea [ 6 – 11 ]. The adult worms we found in the common minke whale were identified as A. simplex (s.s.), which had been recognized as a main causative agent of anisakiasis and a major Anisakis species in second intermediate hosts in Korea [ 12 ].…”

Section: Discussionmentioning

confidence: 99%

“…The distribution of anisakids in Korea varies depending on the sea area and fish species. For example, most fish and cephalopod species in the Yellow Sea, Southern Sea, and East Sea were found to be predominantly infected with A. pegreffii [ 8 – 10 ], while 2 salmonid species, 1 gadoid fish, and common squid collected in the East Sea were mainly infected with A. simplex (s.s.) [ 6 – 9 , 11 ]. This difference may be due to factors such as water temperature, preying sources, and topographical characteristics.…”

Section: Discussionmentioning

confidence: 99%

“…Research on Anisakis infection in fish and cephalopods, the second intermediate hosts directly responsible for anisakiasis, has been conducted consistently. Three Anisakis species, i.e., A. simplex (s.s.), A. pegreffii , A. typica , and a hybrid between A. simplex (s.s.) and A. pegreffii , have been identified at the species level in fish and cephalopods in Korea [ 6 – 11 ]. Until the early 2010s, when only morphological identification was available, it was difficult to identify these nematodes at the species level due to a lack of clarity on the taxonomical significance of this group [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

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Phylogenetic and phylogeographic analyses of Anisakis simplex sensu stricto (Nematoda: Anisakidae) from the common minke whale in Korean waters

Kim,

Lee,

Choe

2023

Parasites Hosts Dis

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The genus Anisakis is among the most significant parasites to public health, as it causes anisakiasis, a parasitic infection in humans resulting from consuming raw or undercooked seafood. Although the infection status of i>Anisakis in second intermediate hosts, such as marine fishes and cephalopods, and humans have been severally reported in Korea, no information about the definitive host in Korean waters is available. In 2014, 2 adult gastric nematodes were collected from a common minke whale (Balaenoptera acutorostrata) found in the East Sea, Korea. These worms were identified as A. simplex sensu stricto (s.s.) by comparing the mitochondrial COX2 marker with previously deposited sequences. Phylogenetic and phylogeographic analyses of A. simplex (s.s.) worldwide revealed 2 distinct populations: the Pacific population and the European waters population. This is the first report on adult i>Anisakis and its definitive host species in Korea. Further studies on Anisakis infection in other cetacean species and marine mammals in Korean seas are warrantedi>Anisakis

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phylogenetic and phylogeographic analyses of Anisakis simplex sensu stricto (Nematoda: Anisakidae) from the common minke whale in Korean waters

Kim,

Lee,

Choe

2023

Parasites Hosts Dis

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“…Apart from the negative side, anisakid nematodes have been extensively employed as biological tags for numerous aspects of fisheries biology, primarily in population studies. Recently, the utilization of parasites for biological indicators for diverse fish and cephalopods has been significantly increasing (Klapper et al 2016;Nurhidayat et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Anisakid nematodes from the largehead hairtail fish (Trichiurus lepturus) from the northern coast of Java, Indonesia

et al. 2023

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Abstract. Setyobudi E, Murwantoko, Utami AMR, Syarifah RF. 2023. Anisakid nematodes from the largehead hairtail fish (Trichiurus lepturus) from the northern coast of Java, Indonesia. Biodiversitas 24: 1560-1568. Hairtail fish has been frequently reported to be infected by anisakid nematodes. This study aims to determine the presence of anisakid nematodes on the large-head hairtail fish (Trichiurus lepturus) from the northern coast of the Java Sea, Indonesia. In total, 306 hairtail fish were collected from the northern coast of Java. Each fish sample was measured its length and weighed, then dissected to examine the presence of anisakid nematode. The anisakid larva examination was conducted in the body cavity, internal organs, digestive tract, and muscles. The anisakid nematodes found were then separated and grouped based on morphological appearance, namely body color and size. Selected samples from each anisakid group and sampling location were extracted and identified molecularly by the direct sequencing method. The findings showed that the larvae of anisakid nematodes infect the T. lepturus with different prevalence and average intensity at each location (P: 38.0-100%, MI: 3.33-42.88 larvae/ind.). Mostly anisakid larvae were found in the body cavity and were not found in the muscle. Most of the T. lepturus from the northern coasts of Cirebon and Pati were infected with anisakid at low intensity (?5 larvae/individual). The high intensity of anisakid larval infection was shown by the hairtail originating from Rembang and Tuban (>20 larvae/ind.). Molecular identification showed that three anisakids were isolated from hairtails from the northern coast of Java, namely Anisakis typica, Hysterothylacium amoyense, and Raphidascaris lophii. Information on anisakid species and their distribution is important as a reference for fish handling and processing, the assessment of the human health risk, and the development of these nematodes as biological tags.

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Genetic analyses of Anisakis pegreffii (Nematoda: Anisakidae) from the East Asian finless porpoise Neophocaena asiaeorientalis sunameri (Cetacea: Phocoenidae) in Korean waters

Kim,

Jeon,

Lee

et al. 2024

Parasitol Res

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The East Asian finless porpoise, Neophocaena asiaeorientalis sunameri , is an endangered species that inhabits the coastal marine environments of East Asia. In the present study, we investigated the overall infection status of anisakid nematodes in East Asian finless porpoises from three sea sectors off the Korean Peninsula. The genetic diversity and population genetic structure of the identified nematode species were evaluated. The prevalence of all stages of anisakid nematodes collected from the stomach was 57.55% (61 among the 106 porpoises examined), and 16 of the hosts were found to have adult worms. The mean number of infected adults was 211 (± 419.54, 5–1455 per host). Only one species of anisakids, Anisakis pegreffii , was identified from randomly selected worms by molecular approaches. Analysis of the mitochondrial (mt) cox2 partial gene in 50 newly generated sequences of A. pegreffii revealed 24 haplotypes, including 14 new haplotypes. We observed below-average levels of nucleotide diversity and haplotype diversity compared to other seas around the world. The mtDNA cox2 haplotypes of the species in the three Korean sea areas showed no genetic structure, suggesting well-connected gene flow within these areas. This study represents the first record of a definitive host of A. pegreffii in Korean waters, providing important information regarding anisakids genetic diversity in the cetacean species inhabiting limited regions. Supplementary Information The online version contains supplementary material available at 10.1007/s00436-024-08368-x.

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Occurrence of Anisakid Nematodes in Walleye Pollock (Gadus chalcogrammus) Caught off the East Sea of Korea: Their Molecular Identification and Biological Implication

Cited by 3 publications

References 40 publications

Phylogenetic and phylogeographic analyses of Anisakis simplex sensu stricto (Nematoda: Anisakidae) from the common minke whale in Korean waters

Phylogenetic and phylogeographic analyses of Anisakis simplex sensu stricto (Nematoda: Anisakidae) from the common minke whale in Korean waters

Anisakid nematodes from the largehead hairtail fish (Trichiurus lepturus) from the northern coast of Java, Indonesia

Genetic analyses of Anisakis pegreffii (Nematoda: Anisakidae) from the East Asian finless porpoise Neophocaena asiaeorientalis sunameri (Cetacea: Phocoenidae) in Korean waters

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