Molecular phylogeny of Cosmetocleithrum Kritsky, Thatcher & Boeger, 1986 (Monogenoidea: Dactylogyridae), gill parasites of Neotropical catfishes (Siluriformes)

0559811 - BC 2023 RIV GB eng J - Článek v odborném periodiku
Mendoza-Palmero, Carlos Alonso - Acosta, A.A. - Scholz, Tomáš
Molecular phylogeny of Cosmetocleithrum Kritsky, Thatcher & Boeger, 1986 (Monogenoidea: Dactylogyridae), gill parasites of Neotropical catfishes (Siluriformes).
Journal of Helminthology. Roč. 96, JUL (2022), č. článku e56. ISSN 0022-149X. E-ISSN 1475-2697
Institucionální podpora: RVO:60077344
Klíčová slova: Cosmetocleithrum * Dactylogyridae * Siluriformes * 28s rRNA gene * molecular phylogeny
Obor OECD: Zoology
Impakt faktor: 1.6, rok: 2022
Způsob publikování: Omezený přístup
https://www.cambridge.org/core/journals/journal-of-helminthology/article/abs/molecular-phylogeny-of-cosmetocleithrum-kritsky-thatcher-boeger-1986-monogenoidea-dactylogyridae-gill-parasites-of-neotropical-catfishes-siluriformes/95C37E983CFDFBF5769D866054F1241B

Cosmetocleithrum Kritsky, Thatcher & Boeger, 1986 (Dactylogyridae) represents one of the most species-rich groups (22 species currently recognized as valid) of all dactylogyrid parasites infecting Neotropical catfishes. Species of Cosmetocleithrum exhibit a remarkable affinity towards catfishes of the Doradidae and the Auchenipteridae. However, phylogenetic relationships between members of this genus have not been yet analysed. This study analysed newly obtained partial sequences of the 28S ribosomal RNA gene of seven species of Cosmetocleithrum, including its type species C. gussevi Kritsky, Thatcher & Boeger, 1986, along with several other dactylogyrids infecting siluriform, gymnotiform, perciform and characiform fishes. Cosmetocleithrum appeared as an evolutionary recent group, composed of two well-defined lineages: lineage 1 includes parasites of doradids namely, C. bulbocirrus, C. confusum, C. parvum and C. bifurcum whereas lineage 2 is composed of species from doradids that is, C. rarum, C. gussevi, C. gigas, C. trachydorasi and C. falsunilatum together with parasites of auchenipterids namely, C. laciniatum and C. baculum. The search for synapomorphies to characterize taxonomic groups within Cosmetocleithrum appears challenging, since the morphology of their haptoral elements is quite conservative, and that of the copulatory complex is highly variable between species. The results of the present study support the recent synonymization of Paracosmetocleithrum Acosta, Scholz, Blasco-Costa, Alves & Silva, 2018 with Cosmetocleithrum. Whereas the 28S ribosomal DNA data resolved Cosmetocleithrum as monophyletic, the statistical support for the lineage was low, rendering its phylogenetic position between other Neotropical dactylogyrids yet undefined.
Trvalý link: https://hdl.handle.net/11104/0340100