O aquarismo é um passatempo que cresceu no século 20 e segue em franco crescimento no século atual, especialmente graças à verticalização nas cidades. This is the first report of these two Ovipleistophora species in China which extends their host and geographical range.
High sequence variation in ITS sequence suggests that it can be a reliable molecular marker to explore the population genetics of O. Genetic analysis indicated that the genetic variation in the ITS and LSU sequences was distinct among between-host O. ovariae were for the first time observed to be dimorphic. Sporogony occurred in direct contact with the host cell cytoplasm and sporophorous vesicles were not observed for the new isolates of these two Ovipleistophora species. Both of them exclusively infected fish ovary and were morphologically, ultrastructurally and genetically characterized.
ovariae were firstly reported from Culter alburnus and Xenocypris argentea and Parabramis pekinensis, respectively. In the current study, Ovipleistophora diplostomuri and O.
Microsporidia of the genus Ovipleistophora are generally parasites of fishes and aquatic crustaceans. This study also suggests that the genus Kabatana is a junior synonym of the genus Inodosporus. Such polymorphic life cycle has barely been known among fish microsporidians. has a multi-host life cycle utilizing fish and crustacean hosts and different modes of development in each host. Together with the success of the previous prawn-feeding trials, this study strongly suggests I. Based on the morphological and molecular analyses, we describe Microsporidium sp. In the phylogeny, type 1 was placed within a clade comprising Kabatana spp. RBT-2021 in the trout exhibited the characteristics of the genus Kabatana Lom, Dyková and Tonguthai, 2000. Morphological observations revealed type 1 in the prawn possesses characteristics of the genus Inodosporus Overstreet and Weidner, 1974, while Microsporidium sp. However, intriguingly, the spore morphology and the mode of development in fish and prawn were strikingly different. RBT-2021, indicating they are conspecific. The nucleotide sequence of the small subunit ribosomal RNA gene was identical between type 1 and Microsporidium sp. paucidens in Lake Biwa, Japan was investigated for microsporidian infection and 4 types of spores (types 1-4) were newly found. Involvement of common prawn Palaemon paucidens in its transmission was suggested based on the previous feeding trials, although the microsporidian infection in P. A new microsporidian disease of cultured rainbow trout Oncorhynchus mykiss has recently been confirmed in Japan, and the causative species was tentatively designated as Microsporidium sp.
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