Kudoa thyrsites from Japanese Flounder and Kudoa lateolabracis n. sp. from Chinese Sea Bass: Causative Myxozoans of Post-Mortem Myoliquefaction

Yokoyama, Hiroshi; Whipps, Christopher M.; Kent, Michael L.; Mizuno, Kaori; Kawakami, Hidemasa

doi:10.3147/jsfp.39.79

Cited by 69 publications

(41 citation statements)

References 19 publications

(16 reference statements)

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“…In contrast, Schlegel et al (1996) documented a 2% variation within Myxidium lieberkuehni SSU rRNA gene sequences that were derived from various isolates of the same species. Yokoyama et al (2004b) also found a difference of 0.9% between Japanese and Canadian isolates of Kudoa thyrsites.…”

Section: Discussionmentioning

confidence: 81%

Molecular and Morphological Redescriptions of Enteric Myxozoans, Enteromyxum leei (formerly Myxidium sp. TP) and Enteromyxum fugu comb. n. (syn. Myxidium fugu) from Cultured Tiger Puffer

et al. 2004

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ABSTRACT-The phylogenies of two enteric myxozoans, Myxidium fugu and Myxidium sp. TP, from cultured tiger puffer Takifugu rubripes were re-evaluated based on their small subunit riboso mal RNA (SSU rRNA) gene sequence and spore morphology. Phylogenetic analysis shows that M. fugu and Myxidium sp. TP are grouped with Enteromyxum species as a monophyletic clade, not with other Myxidium spp. It was also illustrated that spores of M. fugu satisfy the criteria for the genus Enteromyxum for spore morphology.SSU rRNA gene sequence of Myxidium sp. TP shared 99.6% identity to that of Enteromyxum leei. Experimental transmission of Myxidium sp. TP to red sea bream Pagrus major induced the formation of mature spores, which were indistinguish able from those of E. leei in morphology and morphometrics.Myxidium sp. TP is identified as E. leei, and M. fugu is reassigned as Enteromyxum fugu comb. n.

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Section: Discussionmentioning

confidence: 81%

Molecular and Morphological Redescriptions of Enteric Myxozoans, Enteromyxum leei (formerly Myxidium sp. TP) and Enteromyxum fugu comb. n. (syn. Myxidium fugu) from Cultured Tiger Puffer

et al. 2004

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“…A little more than half of the parasites locate within the skeletal muscle fibers, and a number of species are especially important once they cause liquefaction of the host muscle within a short period after the death of the host which becomes useless for consumption (Cruz, Silva, & Saraiva, 2011;Gilman & Eiras 1998;Henning, Hoffman, & Manley, 2013;Moran, Whitaker, & Kent, 1999;Romero & Burgos 1996;Yokoyama & Itoh 2005;Yokoyama, Whipps, Kent, Mizuno, & Kawakami, 2004). This can occur in both wild and cultured fish, and the infection may be decisive for the economic success of fisheries and farming.…”

Section: Introductionmentioning

confidence: 99%

<b>Observations on the Infection by <i>Kudoa</i> sp. (Myxozoa, Multivalvulida) in fishes caught off Rio Grande, Rio Grande do Sul State, Brazil

Eiras

Júnior

Saraiva

et al. 2016

Acta Sci. Biol. Sci.

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ABSTRACT. It is reported the parasitization of (Valenciennes, 1836), capturados em Rio Grande, Estado do Rio Grande do Sul, Brasil. Outras espécies de peixes capturados no mesmo local não estavam parasitadas. Os parasitas formavam plasmódios alongados no interior das fibras musculares. Não se observou liquefação do músculo do hospedeiro ou qualquer outra reação dos tecidos. Descrevem-se as características morfológicas e morfométricas dos esporos, os parasitas são comparados com outras espécies de Kudoa, e a importância da parasitose é discutida.

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“…Moreover, myoliquefaction can cause adverse effects in the canning industry (GILMAN & EIRAS, 1998). Myoliquefaction, among other effects, has been described in fish infected with K. camarguensis (PAMPOULIE et al, 1999), K. lateolabracis (YOKOYAMA et al, 2004), K. megacapsula (YOKOYAMA & ITOH, 2005), K. thyrsites (YOKOYAMA et al, 2004) and K. peruvianus (SALAS, 1972). In addition, the sometimes conspicuous cysts within the fish's muscles lead to rejection of these fish in the market.…”

Section: Introductionmentioning

confidence: 99%

Kudoa spp. (Myxozoa, Multivalvulida) parasitizing fish caught in Aracaju, Sergipe, Brazil

Eiras

Fujimoto

Madi

et al. 2016

Rev. Bras. Parasitol. Vet.

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This study reports on Kudoa spp. (Myxozoa, Multivalvulida) from the fish species Lutjanus analis, Bagre marinus, Aspistor luniscutis and Lutjanus jocu, which were caught in Aracaju, state of Sergipe, Brazil. The parasites formed oval plasmodia around the esophagus of L. analis, and elongated plasmodia inside the skeletal muscle of B. marinus, A. luniscutis and L. jocu. Host myoliquefaction was not observed in all the cases studied. The current study provides a morphological and morphometric description of each parasite as well as a comparison with all the species described worldwide. Lack of molecular data impaired specific identification of the parasites. The importance of these parasites is discussed and the need for further studies on infections in Brazilian fish is emphasized because of the high economic impact of some Kudoa species which cause liquefaction in hosts' muscles and render these fish unsuitable for consumption.Keywords: Kudoa, Myxosporea, parasites, marine fish, Brazil. ResumoEste estudo relata Kudoa spp. (Myxozoa, Multivalvulida) de espécies de peixes Lutjanus analis, Bagre marinus, Aspistor luniscutis e Lutjanus jocu que foram capturados na costa litorânea de Aracaju, Estado de Sergipe, Brasil. Os parasitas formavam plasmódios ovais rodeando o esófago em L. analis, enquanto que nas espécies B. marinus, A. luniscutis e L. jocu formavam plasmódios alongados no interior das fibras musculares. Fenômenos de liquefação do músculo do hospedeiro não foram observados. O presente estudo proporciona uma descrição morfológica e morfométrica de cada parasita, sendo feita uma comparação com todas as espécies conhecidas em todo mundo. A inexistência de dados moleculares prejudica a identificação específica dos parasitas. A importância destes parasitas é discutida e a necessidade de mais estudos relacionados a infecções em peixes brasileiros é enfatizada por causa do alto impacto econômico de algumas espécies de Kudoa que causam liquefação nos músculos dos hospedeiros e tornam estes peixes impróprios para consumo.Palavras-chave: Kudoa, Myxosporea, parasitas, peixes marinhos, Brasil.

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Kudoa thyrsites from Japanese Flounder and Kudoa lateolabracis n. sp. from Chinese Sea Bass: Causative Myxozoans of Post-Mortem Myoliquefaction

Cited by 69 publications

References 19 publications

Molecular and Morphological Redescriptions of Enteric Myxozoans, Enteromyxum leei (formerly Myxidium sp. TP) and Enteromyxum fugu comb. n. (syn. Myxidium fugu) from Cultured Tiger Puffer

Molecular and Morphological Redescriptions of Enteric Myxozoans, Enteromyxum leei (formerly Myxidium sp. TP) and Enteromyxum fugu comb. n. (syn. Myxidium fugu) from Cultured Tiger Puffer

<b>Observations on the Infection by <i>Kudoa</i> sp. (Myxozoa, Multivalvulida) in fishes caught off Rio Grande, Rio Grande do Sul State, Brazil

Kudoa spp. (Myxozoa, Multivalvulida) parasitizing fish caught in Aracaju, Sergipe, Brazil

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