| ONDRAČKOVÁ, Markéta, Kateřina FRANCOVÁ, Martina DÁVIDOVÁ, Matej POLAČIK a Pavel JURAJDA. Parasite infection and condition status of Neogobius kessleri and N. melanostomus (Gobiidae) in their native and non-native area of the Danube River distribution. In XII European Congress of Ichthyology, 9-13 September 2007, Dubrovnik, Croatia. 2007. |
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@proceedings{749612,
author = {Ondračková, Markéta and Francová, Kateřina and Dávidová, Martina and Polačik, Matej and Jurajda, Pavel},
booktitle = {XII European Congress of Ichthyology, 9-13 September 2007, Dubrovnik, Croatia.},
keywords = {Ponto-Caspian gobies; parasite infection},
language = {eng},
title = {Parasite infection and condition status of Neogobius kessleri and N. melanostomus (Gobiidae) in their native and non-native area of the Danube River distribution},
year = {2007}
}
TY - CONF
ID - 749612
AU - Ondračková, Markéta - Francová, Kateřina - Dávidová, Martina - Polačik, Matej - Jurajda, Pavel
PY - 2007
TI - Parasite infection and condition status of Neogobius kessleri and N. melanostomus (Gobiidae) in their native and non-native area of the Danube River distribution
KW - Ponto-Caspian gobies
KW - parasite infection
N2 - Parasite infection and four different condition indices were analyzed in native and introduced populations of bighhead goby Neogobius kessleri and round goby N. melanostomus. Parasite species richness and mean abundance were higher in bighead goby in both native and introduced populations. In spring the parasite species richness was significantly higher in introduced fish whereas total parasite abundance reached higher values in native fish. In autumn, no differences were found for parasite infection, but higher values of hepatosomatic index in introduced fish and higher values of Fulton condition factor in both spring and autumn were observed in both goby species, indicating a better condition status before overwintering. Both male and female round gobies attained higher gonadosomatic index values in introduced population, indicating increased investment in round goby into reproduction in its new area of distribution. Differences in success of the introduction and establishment in the new area between the two fish species studied may be associated with a relatively low parasite infection, reduced investment into immune defence and higher gonadosomatic index in introduced populations of round goby in comparison to bighead goby
ER -
ONDRAČKOVÁ, Markéta, Kateřina FRANCOVÁ, Martina DÁVIDOVÁ, Matej POLAČIK a Pavel JURAJDA. Parasite infection and condition status of Neogobius kessleri and N. melanostomus (Gobiidae) in their native and non-native area of the Danube River distribution. In \textit{XII European Congress of Ichthyology, 9-13 September 2007, Dubrovnik, Croatia.}. 2007.
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