Evidence of the American Myxobolus dechtiari was introduced along with its host Lepomis gibbosus in Europe: Molecular and histological data.

Autor:	Goswami U; Institute for Veterinary Medical Research, Centre for Agricultural Research, Budapest, Hungary., Molnár K; Institute for Veterinary Medical Research, Centre for Agricultural Research, Budapest, Hungary., Cech G; Institute for Veterinary Medical Research, Centre for Agricultural Research, Budapest, Hungary., Eiras JC; Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal.; Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR), Terminal de Cruzeiros do Porto de Leixões, Matosinhos, Portugal., Bandyopadhyay PK; University of Kalyani, West Bengal, India., Ghosh S; University of Kalyani, West Bengal, India., Czeglédi I; Balaton Limnological Institute, Centre for Ecological Research, Klebelsberg Kuno u. 3, 8237, Tihany, Hungary., Székely C; Institute for Veterinary Medical Research, Centre for Agricultural Research, Budapest, Hungary.
Jazyk:	angličtina
Zdroj:	International journal for parasitology. Parasites and wildlife [Int J Parasitol Parasites Wildl] 2021 Apr 15; Vol. 15, pp. 51-57. Date of Electronic Publication: 2021 Apr 15 (Print Publication: 2021).
DOI:	10.1016/j.ijppaw.2021.04.005
Abstrakt:	The American pumpkinseed Lepomis gibbosus , was introduced to Europe more than one hundred years ago. Currently it is a common fish in European freshwaters but relatively few specific parasites infect this fish in this new habitat. In Europe only a single species, Myxobolus dechtiari seems to represent the American myxosporean fauna of centrarchid fishes. M. dechtiari was found in both Portugal and Hungary. This species forms plasmodia with elongated shape inside the cartilaginous rays of gill filaments. In the advanced stage of infection, after disruption of plasmodia, small groups of myxospores remain enclosed in the cartilaginous gill rays causing distortions in the filaments. Myxospores were ellipsoidal in frontal view and lemon-shape in sutural, length 12.5 ± 0.46 (12-13.4) μm, width 10 ± 0.37 (9.6-10.4) μm, and thickness 7.4 ± 0.37 (7-8) μm; the polar capsules were pyriform, equal in size, length 5.6 ± 0.21 (5.3-6) μm, width 3.2 ± 0.16 (3-3.6) μm; Seven to eight polar tube coils were arranged perpendicularly to the capsule length. There was a small, round, 0.4 ± 0.1 (0.3-05) (N = 50) intercapsular appendix in the spores. The small subunit ribosomal DNA (ssrDNA) of M. dechtiari differed from other myxozoans sequenced to date. Phylogenetic analysis of the ssrDNA gene sequence placed this species in a clade including actinospores and Myxobolus species: Raabeia type1, Triactinomyxon sp., and Myxobolus osburni infecting the same host fish. The focus of our study was to prove that the pumpkinseed, a fish originated from North-America introduced one of its myxosporean parasite to Europe. Emphasis was put on to demonstrate the unique feature of this parasite causing infection in the cartilaginous gill rays. (© 2021 The Authors. Published by Elsevier Ltd on behalf of Australian Society for Parasitology.)
Databáze:	MEDLINE
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