Susceptibility of Prussian carp infected by metacercariae of Posthodiplostomum cuticola (v. Nordmann, 1832) to fish predation

0040715 - ÚBO 2007 RIV JP eng J - Článek v odborném periodiku
Ondračková, Markéta - Dávidová, M. - Gelnar, M. - Jurajda, Pavel
Susceptibility of Prussian carp infected by metacercariae of Posthodiplostomum cuticola (v. Nordmann, 1832) to fish predation.
[Vnímavost karasa stříbřitého infikovaného metacerkariemi Posthodiplostomum cuticola k predaci dravou rybou.]
Ecological Research. Roč. 21, č. 4 (2006), s. 526-529. ISSN 0912-3814. E-ISSN 1440-1703
Grant CEP: GA MŠMT LC522
Výzkumný záměr: CEZ:AV0Z60930519
Klíčová slova: Parasite * Predation * Digenea * Intermediate host
Kód oboru RIV: EH - Ekologie - společenstva
Impakt faktor: 1.012, rok: 2006

The susceptibility of prey fish infected by metacercariae of Posthodiplostomum cuticola (Digenea: Diplostomatidae) to the predation of non-host predators under experimental conditions was investigated. Parasitized young-of-the-year Prussian carp Carassius auratus were consumed significantly more often by perch Perca fluviatilis compared to non-parasitized individuals, independent of Prussian carp density. The proportion of parasitized and non-parasitized fish consumed by the predator remained stable at four different prey densities. The probability of predation did not increase with the intensity of parasite infection. The effect of P. cuticola on the host seems to result mostly from pathological changes (poor condition, black spots). However, our results provide evidence of higher probability of parasitized Prussian carp being consumed by fish predators under experimental conditions.

Vnímavost karasa stříbřitého infikovaného metacerkariemi Posthodiplostomum cuticola k predaci dravou rybou (okoun říční) byla sledována v experimentálních podmínkách. Juvenilní karasi parazitovaní byli v experimentu významně častěji konzumováni dravou rybou než neparazitované ryby nezávisle na hustotě kořisti (karasa stříbřitého). Pravděpodobnost predace nebyla ovlivněna intenzitou infekce parazita.
Trvalý link: http://hdl.handle.net/11104/0134375