Informace o publikaci
Monogenea parasitizing gills of the capelin, Mallotus villosus, in Petuniabukta, Svalbard
| Autoři | |
|---|---|
| Rok publikování | 2015 |
| Druh | Další prezentace na konferencích |
| Fakulta / Pracoviště MU | |
| Citace | |
| Popis | During the Polar Ecology Course in July 2014 a field research was carried out to study monogenean parasites of arctic fish from Petuniabukta (Billefjorden, central Svalbard). The capelin, Mallotus villosus (Müller, 1776) (Osmeridae), is a small forage fish distributed in the Atlantic and Arctic oceans and it frequently occurs in Petuniabukta. In total 17 individuals of fish were caught with gill nets (benthic and pelagic) and transferred to laboratory for parasitological examination, focused on gill parasites. A subsample of 57 alive individuals of Monogenea was collected. Based on morphological characteristics, three species were determined. Gyrodactyloides andriashewi was the most common species (39 individuals). Another two species, Gyrodactyloides petrushewskii (6 individuals) and Laminiscus gussevi (12 individuals), were found less frequently. A high number of monogenean parasites were found dead because most of the fish died shortly after catching in gill nets and their gills were in bad condition. The gill nets, therefore, seem to be unsuitable method to capture the capelin for parasitological examination because the fish appear to be too fragile to survive. Examination of fish gills for monogenean parasites requires fresh material, so I recommend alternative fish sampling methods for further study of gill parasites of capelin. |