Are gobiid fish more susceptible to predation if parasitized by Eustrongylides excisus?: An answer from robbed snakes
2010 (English)In: Ecological research, ISSN 0912-3814, E-ISSN 1440-1703, Vol. 25, no 2, 469-473 p.Article in journal (Refereed) Published
Aspects of the predator-prey relationship between dice snake, Natrix tessellata and gobiid fish infected with Eustrongylides excisus were studied in Lake Sinoe, Romania. A population of snakes residing here shows a high prevalence of subcutaneous larvae of this nematode. The hypothesis of the altered motility in infected fish leading to increased depredation by snakes was tested by comparing gobiids collected from dice snakes with gobiids caught via electrofishing. Out of a total of seven identified gobiid species, three were used for analysis: syrman goby Neogobius syrman, mushroom goby Neogobius eurycephalus, and round goby Neogobius melanostomus. No significant differences in prevalence and intensity of E. excisus infection were found between fish caught by snakes and those obtained by electrofishing. However, significantly higher abundance of E. excisus larvae in fish caught by snakes was reported. These findings suggest limited influence of the presence of E. excisus larvae in studied gobiids regarding their susceptibility to predation by dice snakes.
Place, publisher, year, edition, pages
2010. Vol. 25, no 2, 469-473 p.
Eustrongylides excisus, Natrix tessellata, Neogobius, Gobiidae, Eustrongylidosis, Host-parasite interaction
IdentifiersURN: urn:nbn:se:uu:diva-147446DOI: 10.1007/s11284-009-0676-4ISI: 000275705600024OAI: oai:DiVA.org:uu-147446DiVA: diva2:400381