New record and redescription of <i>Microcotyle helotes</i> Sandars, 1944 (Monogenea: Microcotylidae) in Vietnam

Ha Hoang Thi Nguyen; Ha Van Nguyen; Manh Hung Nguyen

doi:10.15625/2615-9023/19870

Author affiliations

Authors

Nguyen Thi Hoang Ha Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Ha Noi, Vietnam
Nguyen Van Ha Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Ha Noi, Vietnam; Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Ha Noi, Vietnam
Nguyen Manh Hung Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Ha Noi, Vietnam; Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Ha Noi, Vietnam

DOI:

https://doi.org/10.15625/2615-9023/19870

Keywords:

Marine fish, parasites, Terapon jarbua, Terapontidae.

Abstract

Twenty-seven specimens of the fish species Terapon jarbua and 4 specimens of the fish species Terapon theraps were collected from the Cat Ba Archipelago marine area, and examined for parasite infection. Among these, 4 specimens of T. jarbua and 1 specimen of T. theraps were infected with a total of 42 monogeneans. The intensity of infection ranged from 1 to 16 worms per fish. Four monogenean species were identified, three of which belong to the Protogyrodactylidae: Protogyrodactylus gussevi (14 specimens) and Protogyrodactylus perforatus (12 specimens) were found on T. jarbua, while Protogyrodactylus solidus (1 specimen) was identified on T. theraps. The species Microcotyle helotes (17 specimens) was recorded for the first time in Vietnam, found in two individuals of the new host T. jarbua. Additionally, a redescription of M. helotes was provided.

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