Description of Henneguya jaczoi sp. n. (myxosporea, myxobolidae) from Perca fluviatilis (L.) (pisces, percidae) with some remarks on the systematics of Henneguya spp. of european fishes

Abstract

A new Henneguya species, H. jaczoi sp. n., is described from perch (Perca fluviatilis) from Lake Balaton, Hungary. This species infects the palatal region of the fish, forming large plasmodia in the thickened caudal part of the buccal cavity and at the dorsal ends of the cartilaginous gill arches. The species differs from the gill-dwelling Henneguya species of perch and pike (Esox lucius) both morphologically and in molecular aspects. The authors conclude that the type species H. psorospermica Thélohan is a specific parasite of pike, while the species forming plasmodia in the gills of perch corresponds to H. texta Cohn, which was hitherto regarded as a synonym of H. psorospermica. Besides the above-mentioned species, H. creplini was frequently found in pikeperch (Sander lucioperca) and Volga pikeperch (Sander volgensis), but no Henneguya infection has been recorded in ruffe (Gymnocephalus cernua), which is a common percid fish of the lake and is known to be the type host species for H. creplini.

Novel insights into immune stress markers associated with myxosporeans gill infection in Nile tilapia (molecular and immunohistochemical studies)

“…brachysporus . The nucleotide sequence of the 18S rRNA locus of Henneguya exhibited similarity with sequences reported by Morsy et al [ 38 ] and Emeish et al [ 15 ] in Egypt, as well as Székely et al [ 39 ] in Hungary and Vieira et al [ 40 ] in Brazil. BLAST analysis of the 18S rRNA gene of M .…”

“…were confirmed as M. tilapiae, M. agolus, and M. brachysporus. The nucleotide sequence of the 18S rRNA locus of Henneguya exhibited similarity with sequences reported by Morsy et al [38] and Emeish et al [15] in Egypt, as well as Sze ´kely et al [39] in Hungary and Vieira et al [40] in Brazil. BLAST analysis of the 18S rRNA gene of M. agolus, M. tilapiae, and M. brachysporus corresponded with findings by Abdel-Gaber et al [12].…”

Henneguya (Cnidaria: Myxosporea: Myxobolidae) infections of cultured barramundi, Lates calcarifer (Perciformes: Latidae) in an estuarine wetlands system of Malaysia: description of Henneguya setiuensis n. sp., Henneguya voronini n. sp. and Henneguya calcarifer n. sp.

“…Myxosporeans (Cnidaria: Myxosporea) are common, diverse parasites of marine and freshwater fishes (Lom and Dyková 2006). The genus Henneguya Thélohan, 1892, in family Myxobolidae, is the third most speciose myxosporean genus after Myxidium and Myxobolus, with > 200 Henneguya species described (Eiras 2002;Eiras and Adriano 2012;Székely et al 2018). While most Henneguya species do not cause overt disease in their hosts, a few are economically important pathogens.…”