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Species status of ragworm populations (Nereididae: Tylorrhynchus Sp.) exploited as a human specialty based on their molecular analyses in the northern coast of Vietnam
Manh, V.Q.; Ha Thi, N.; Phommavongsa, S.; My, T.H.; Hien, T.L. (2022). Species status of ragworm populations (Nereididae: Tylorrhynchus Sp.) exploited as a human specialty based on their molecular analyses in the northern coast of Vietnam. C. R. Acad. Bulg. Sci. 75(4): 545-553. https://dx.doi.org/10.7546/crabs.2022.04.09
In: Доклади на БАН = Comptes rendus de l'Académie Bulgare des Sciences = Dokladi na Balgarskata Akademija na Naukite. Akademija: Sofiâ. ISSN 1310-1331; e-ISSN 2367-5535, more
Peer reviewed article  
Available in  Authors 
Keywords
    Tylorrhynchus heterochaetus [auct. misspelling] [WoRMS]
    Marine/Coastal
Author keywords
    ragworm Tylorrhynchus heterochaetus, molecular analysis, species status, distribution, Vietnam north coast
Authors  Top 
  • Manh, V.Q.
  • Ha Thi, N.
  • Phommavongsa, S.
  • My, T.H.
  • Hien, T.L.
Abstract
    In the traditional culinary culture of Vietnam, the ragworms (Nereididae) are an ancient and well-known delicacy (Chả rươi in Vietnamese) of great nutritional and economic value. In order to determine their species status, distribution, and sustainable control, a comparative molecular genetic analysis was carried out in 2018--2019. It comprised of ragworm populations along the northern coast including Quang Ninh, Hai Phong, Hai Duong, Thai Binh and Nam Dinh, 20.0, 14.5, 34.0, 26.0 and 17.0 km from the sea, respectively. We found that all of them belong to one and the same species named Tylorrhynchus heterochaetus (Quatrefages, 1866). The ragworm in the Tu Ky area of Hai Duong province has the farthest distribution in the mainland, and was among the ragworm groups with the largest morphological measurements. Salinity and inland environmental conditions are likely factors influencing the morphological development of ragworm populations in this area. This may be the reason Tu Ky ragworms have been labelled a specialty dish in Vietnam dating back to ancient history.
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