ArticleParasitology research2015
Diphyllobothrium nihonkaiense: wide egg size variation in 32 molecularly confirmed adult specimens from Korea.
Article in Parasitology research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 13 citations in OpenAlex.
- Dietary footprints of a global parasite: diagnosing Dibothriocephalus nihonkaiensis in non-endemic regions.Gut pathogens · 2025Article
- Paleoparasitology research on ancient helminth eggs and larvae in the Republic of Korea.Parasites, hosts and diseases · 2023Review
- Intestinal Parasites in an Ottoman Period Latrine from Acre (Israel) Dating to the Early 1800s CE.The Korean journal of parasitology · 2019Article
- Dibothriocephalus nihonkaiensis: an emerging foodborne parasite in Brittany (France)?Parasites & vectors · 2019Article
- Helminths of brown bears (Ursus arctos) in the Kola Peninsula.Parasitology research · 2017Article
- Diphyllobothrium nihonkaiense Tapeworm Larvae in Salmon from North America.Emerging infectious diseases · 2017Article
- Eggs as a Suitable Tool for Species Diagnosis of Causative Agents of Human Diphyllobothriosis (Cestoda).PLoS neglected tropical diseases · 2016Article
- Molecular Identification of Diphyllobothrium nihonkaiense from 3 Human Cases in Heilongjiang Province with a Brief Literature Review in China.The Korean journal of parasitology · 2015Review
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Authors and funding
8 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The eggs of Diphyllobothrium nihonkaiense were reported to be smaller than those of the classical Diphyllobothrium latum in general. However, verification using a large number of adult tapeworms is required. We assessed the egg size variation in 32 adult specimens of D. nihonkaiense recovered from Korean patients in 1975-2014. The diagnosis of individual specimens was based on analysis of the mitochondrial cytochrome c oxidase 1 gene sequence. Uterine eggs (n = 10) were obtained from each specimen, and their length and width were measured by micrometry. The results indicated that the egg size of D. nihonkaiense (total number of eggs measured, 320) was widely variable according to individual specimens, 54-76 μm long (mean 64) and 35-58 μm wide (mean 45), with a length-width ratio of 1.32-1.70 (mean 1.46). The worm showing the smallest egg size had a length range of 54-62 μm, whereas the one showing the largest egg size had a length range of 68-76 μm. The two ranges did not overlap, and a similar pattern was observed for the egg width. Mapping of each egg size (n = 320) showed a wide variation in length and width. The widely variable egg size of D. nihonkaiense cannot be used for specific diagnosis of diphyllobothriid tapeworm infections in human patients.
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