Morphological and molecular characterization of Chloromyxum dasyatidis n. sp. (Myxosporea: Chloromyxidae) in the common stingray Dasyatis pastinaca (Linnaeus) from Tunisian waters (Central Mediterranean Sea).

Autor: Rangel LF; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), Laboratory of Animal Parasitology and Pathology, University of Porto, Matosinhos, Portugal. luisfiliperangel@sapo.pt.; CIIMAR, Biology Department, Faculty of Sciences, University of Porto, Porto, Portugal. luisfiliperangel@sapo.pt., Elloumi A; Research Laboratory of Biodiversity, Ecology and Parasitology of Aquatic Ecosystems, Faculty of Sciences of Tunis, University of Tunis El Manar, El Manar I, 2092, Tunis, Tunisia., Quilichini Y; UMR SPE 6134 CNRS, University of Corsica Pascal Paoli, Corte, France., Santos MJ; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), Laboratory of Animal Parasitology and Pathology, University of Porto, Matosinhos, Portugal.; CIIMAR, Biology Department, Faculty of Sciences, University of Porto, Porto, Portugal., Bahri S; Research Laboratory of Biodiversity, Ecology and Parasitology of Aquatic Ecosystems, Faculty of Sciences of Tunis, University of Tunis El Manar, El Manar I, 2092, Tunis, Tunisia.
Jazyk: angličtina
Zdroj: Systematic parasitology [Syst Parasitol] 2023 Dec; Vol. 100 (6), pp. 617-630. Date of Electronic Publication: 2023 Sep 09.
DOI: 10.1007/s11230-023-10111-6
Abstrakt: A new species of Chloromyxum Mingazzini, 1890, C. dasyatidis n. sp., is described from the gallbladder of the elasmobranch fish Dasyatis pastinaca (Linnaeus) from the Mediterranean coast off Tunisia. Mature myxospores were subspherical measuring 13.0 ± 0.3 (12.5-13.9) µm in length, 11.3 ± 0.5 (10.2-12.2) µm in width, and 11.8 ± 0.5 (11.4-12.7) µm in thickness. Four pyriform polar capsules 4.4 ± 0.3 (4.0-4.9) µm long and 3.5 ± 0.3 (3.0-3.8) µm wide. Valves were ornamented by 5 to 7 elevated surface ridges and displayed short caudal filaments. Chloromyxum dasyatidis n. sp. had an overall prevalence of infection of 38.5%, with significant seasonal variation, being more prevalent during summer (60.0%) and autumn (70.8%). Phylogenetically, this species grouped within the Chloromyxum sensu stricto lineage, forming a small clade together with the genetically more similar species C. acuminatum and C. myolibati, both from stingray hosts.
(© 2023. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
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