Hepatic microsporidiosis of mudskipper, Boleophthalmus dussumieri Valenciennes, 1837 (Perciformes: Gobiidae), due to Microgemma sp.

  title={Hepatic microsporidiosis of mudskipper, Boleophthalmus dussumieri Valenciennes, 1837 (Perciformes: Gobiidae), due to Microgemma sp.},
  author={Verma Vandana and Nalini Poojary and Gayatri Tripathi and Pavan Kumar and N. K. Sanil and Kooloth Valappil Rajendran},
  journal={Journal of Parasitic Diseases},
The present study reports a case of hepatic microsporidiosis caused by Microgemma sp. in brackishwater fish, Boleophthalmus dussumieri (Valenciennes, 1837) (n = 60), from the west coast of India. An eight-month study from September 2017 to April 2018 revealed a prevalence of 11.7% for this parasite. The microsporidian showed tissue-specific infection and did not reveal any gross pathology in infected fish. Small whitish cysts containing microspores of size 0.3–0.5 mm were observed in the liver… 



A novel myxozoan parasite, Ellipsomyxa boleophthalmi sp. nov. (Myxozoa: Ceratomyxidae) in the brackishwater fish, Boleophthalmus dussumieri Valenciennes, 1837 (Perciformes: Gobiidae) from India.

The unique morphological and morphometric features of the myxospore, together with the molecular analysis, allowed us to conclude that the present myxozoan is a new species and is named Ellipsomyxa boleophthalmi sp.

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The conversion of M. tincae xenomas into well-visible cyst structures or granulomas reflected an efficient host response involving the infiltration of phagocytic cells, degradation of various parasite stages and formation of a thick fibrous wall.

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It is concluded that this parasite developed in the liver forming whitish xenomas that contained different developmental stages with monokaryotic nuclei, being the first description of this genus from among South America fauna.

Microgemma vivaresi n. sp. (Microsporidia, Tetramicridae), Infecting Liver and Skeletal Muscle of Sea Scorpions, Taurulus bubalis (Euphrasen 1786) (Osteichthyes, Cottidae), an Inshore, Littoral Fish

The ultrastructure of a new microsporidian species Microgemma vivaresi n.

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A new Microsporidium sp. (microsporidia) from the musculature of the mountain whitefish Prosopium williamsoni from British Columbia: morphology and phylogeny.

This organism is described as a new species based on its site of development and its relationship among fish microsporidia based on small subunit ribosomal DNA sequence data, i.e., it was showed that it is not closely related to other microsporaidia for which ribosome DNA sequence is available thus far.

Molecular Phylogeny of Microsporidians with Particular Reference to Species that Infect the Muscles of Fish

Phylogenetic analysis of small subunit rDNA sequences revealed disagreements between the molecular phylogeny and classifications based upon ultrastruclure and showed that the insect parasitizing Pleistophora spp.

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The salient features of fishmicrosporidian xenomas are discussed, such as role of the xenoma, whether its features are host- or microsporidium-dependent, development and demise of the Xenoma in the course of time, and host reaction phenomena.