A new Ergasilus Nordmann, 1832 species (Copepoda: Cyclopoida, Ergasilidae) from gills of two freshwater fishes at Al-Gharraf river, Southern Iraq
Al-Sahlany, B.A.A.; Adday, T.K.; Ali, A.H. (2024). A new Ergasilus Nordmann, 1832 species (Copepoda: Cyclopoida, Ergasilidae) from gills of two freshwater fishes at Al-Gharraf river, Southern Iraq. Egypt. J. Aquat. Biol. Fish. 28(6): 633-643. https://dx.doi.org/10.21608/ejabf.2024.392431
In: Egyptian Journal of Aquatic Biology and Fisheries. Egyptian Society for the Development of Fisheries Resources and Human Health: Cairo. ISSN 1110-6131, meer
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| Trefwoorden |
Aquatic organisms > Freshwater organisms > Fish > Freshwater fish
Parasites > Ectoparasites
Ergasilidae Burmeister, 1835 [WoRMS]
Zoet water |
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| Auteurs | | Top |
- Al-Sahlany, B.A.A.
- Adday, T.K.
- Ali, A.H.
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| Abstract |
A survey of parasitic crustaceans on the gills of two freshwater fish species in Southern Iraq, specifically in the Al-Gharraf River (Thi Qar Province), was conducted from December 2022 to December 2023. The results led to the discovery of a new species: Ergasilus luteusi sp. nov., found on both the yellow barbell, Carasobarbus luteus (Heckel) (type host), and the Abu mullet, Planiliza abu (Heckel). This new species shares a guitar-shaped cephalothorax with 11 other species of Ergasilus; however, Ergasilus luteusi sp. nov. differs from all these species, except for E. iraquensis Amado, 2001, in the armature of legs 1-4. Ergasilus luteusi is very similar to E. iraquensis, but it can be distinguished by possessing three setae in the terminal segment of leg 5 (only two setae in E. iraquensis). The ratio of the second endopod segment to the first endopod segment of the antenna is 65% in E. luteusi, compared to 80% in E. iraquensis. Additionally, the length-to-width ratio of the caudal rami in the new species is 1.5:1, whereas it is 1.1:1 in E. iraquensis. |
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