Parasitic isopods infecting cultured Macrobrachium lanchesteri (De Man, 1911) freshwater prawns in Thailand, including a novel species, Tachaea kamphaengsaenensis sp. n.
Issued Date
2026-04-15
Resource Type
eISSN
23525134
Scopus ID
2-s2.0-105029799991
Journal Title
Aquaculture Reports
Volume
47
Rights Holder(s)
SCOPUS
Bibliographic Citation
Aquaculture Reports Vol.47 (2026)
Suggested Citation
Trivalairat P., Trivalairat K., Chainthong D., Songsuk A., Purivirojkul W. Parasitic isopods infecting cultured Macrobrachium lanchesteri (De Man, 1911) freshwater prawns in Thailand, including a novel species, Tachaea kamphaengsaenensis sp. n.. Aquaculture Reports Vol.47 (2026). doi:10.1016/j.aqrep.2026.103458 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/115168
Title
Parasitic isopods infecting cultured Macrobrachium lanchesteri (De Man, 1911) freshwater prawns in Thailand, including a novel species, Tachaea kamphaengsaenensis sp. n.
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Abstract
The discovery of parasitic isopod Tachaea kamphaengsaenensis sp. n. on freshwater prawn Macrobrachium lanchesteri (De Man, 1911) is described herein. It was found through an extensive survey of cultured and natural ponds in six provinces of Thailand: Bangkok, Chonburi, Nonthaburi, Suphan Buri, Pathum Thani, and Nakhon Pathom. This parasitic isopod species exerts detrimental effects on the prawn’s exoskeleton and damages its eggs. The morphology of Tachaea kamphaengsaenensis sp. n. is distinguished from other species in the genus by the distinct pattern of the setae on the pereopods, pleopods, and maxillipeds. This species also differs morphologically from the other Tachaea species previously reported in Thailand. Furthermore, molecular data analysis reveals a monophyletic divergence from T. chinensis and T. spongillicola . This paper presents the first documented occurrence of T. kamphaengsaenensis sp. n., marking the first record of this parasite in M. lanchesteri and the second record of a prawn-parasitic isopod in Thailand.