Phylogenetic relationships of three Kudoa spp. with morphologically similar myxospores (K. iwatai, K. lutjanus, and K. bora), with the redescription of K. uncinata and K. petala and description of a new species (K. fujitai n. sp.) in fishes in the South China Sea

Li, Yingchun; Inoue, Ken; Zhang, Jinyong; Sato, Hiroshi

doi:10.1007/s00436-020-06636-0

Cited by 15 publications

(3 citation statements)

References 56 publications

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“…2005; Li et al. 2020a, 2020b), indicating that the myxosporean isolated from the Chicken Grunts belongs to K. lutjanus . Furthermore, we provided additional information on K. lutjanus tissue tropism and host specificity.…”

Section: Discussionmentioning

confidence: 99%

“…In recent years (2020–2022), K. lutjanus infections have been reported in several wild fish species, especially populations in the South China Sea, such as Yellowfin Seabream (Li et al. 2020b), Saddleback Silver‐biddy, and Estuary Glassfish (Li et al. 2022), which leads us to focus more closely on this parasite.…”

Section: Discussionmentioning

confidence: 99%

“…Other infected wild species have been found in the South China Sea, including Yellowfin Seabream Acanthopagrus latus (Li et al. 2020b), Saddleback Silver‐biddy Gerres limbatus , and Estuary Glassfish Ambassis marianus (Li et al. 2022).…”

Section: Introductionmentioning

confidence: 99%

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First report of a Kudoa lutjanus outbreak in farmed Chicken Grunts Parapristipoma trilineatum

Cheng,

Lee,

Yan

et al. 2023

J Aqua Anim Hlth

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ObjectiveAs part of the National Disease Surveillance Program for Taiwanese Aquaculture, we investigated the causative agent of disease outbreaks in farmed Chicken Grunts Parapristipoma trilineatum.MethodsIn this study, outbreak cases on two separate farms were noticed in coastal Pingtung County, Taiwan. In total, 50 juvenile fish showing clinical signs (such as emaciation and erratic swimming behavior) and broodstock (two females and two males) from both farms were collected to perform gross lesion assessment, histopathological examination, and molecular identification of the pathogen.ResultClinical symptoms were infected fish exhibited erratic swimming behavior, such as whirling and floating on the surface of the water. In the following months, cumulative mortality had reached 19% and 24%, respectively. The gross lesions in the infected fish included white oval cysts in the muscle, serosa of the internal organs, sclera of the eyes, and cerebral meninges. After conducting a wet mount examination of cysts using a light microscope, we observed a significant quantity of spores with morphological characteristics, suggesting their affiliation with the Myxosporea group. The spores were semiquadrate, with four tiny suture notches at the periphery; the mean spore length was 7.3 μm (SD = 0.5), and the mean spore width was 8.2 μm (SD = 0.6). The mean length and width of the pyriform polar capsules (nematocysts) were 3.6 μm (SD = 0.5) and 2.2 μm (SD = 0.5), respectively. The 18S and 28S ribosomal RNA sequences of these specimens were identical to those of Kudoa lutjanus.ConclusionAs this was the first time an outbreak of K. lutjanus in Chicken Grunts was confirmed, its reappearance with substantial mortality should serve as a warning to the aquaculture industry.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%