Molecular and morphological description of Ceratomyxa scophthalmi sp. nov. (Myxozoa) infecting Scophthalmus maeoticus and first report of Myxidium finnmarchicum in the Black Sea
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Tarih
2022
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Inter-Research
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In the present study, 2 species of myxozoan parasites, the novel Ceratomyxa scophthalmi sp. nov. and Myxidium finnmarchicum, were documented from the gallbladder of Scophthalmus maeoticus inhabiting the Turkish Black Sea coast at Sinop. C. scophthalmi sp. nov. had mostly spherical, clavate, and fine-grained polymorphic plasmodia that ranged in diameter from 16.0 to 29.0 mu m. Spores were arcuate with a convex anterior margin and concave posterior. Valves of spores were highly elongated and unequal in thickness with one valve 1.1-1.3 times thicker than the other. Valves narrowed gradually toward slightly truncated ends. The mean (range) dimensions of spores were 9.4 (8.5-10.0) mu m in length and 49.6 (44.5-55.0) mu m in thickness, with polar capsules that were 3.1 (2.7-3.5) mu m in length and 3.2 (2.7-3.5) mu m in width. Polar filaments were coiled with 4-5 turns. Large numbers of immature forms of C. scophthalmi sp. nov., which were often 'crumpled', and mature forms were found together in the gallbladder bile. Along with morphological differences, phylogenetic analysis based on 18S rDNA, including pairwise nucleotide similarities with other related Ceratomyxa species, suggests C. scophthalmi as a novel species. Moreover, this report provides the first morphological and molecular descriptions of M. finnmarchicum outside of its original geographical location and type host species.
Açıklama
Anahtar Kelimeler
Scophthalmus maeoticus, Black Sea brill, 18S rDNA, Molecular phylogeny, Ceratomyxa scophthalmi, Myxidium finnmarchicum, Cnidaria, Black Sea
Kaynak
Diseases of Aquatic Organisms
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
151
