Parasite infection and condition status of Neogobius kessleri and N. melanostomus (Gobiidae) in their native and non-native area of the Danube River distribution

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F07%3A00041719" target="_blank" >RIV/00216224:14310/07:00041719 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Parasite infection and condition status of Neogobius kessleri and N. melanostomus (Gobiidae) in their native and non-native area of the Danube River distribution

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Parasite infection and condition status of Neogobius kessleri and N. melanostomus (Gobiidae) in their native and non-native area of the Danube River distribution

Popis výsledku anglicky

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.

Druh

O - Ostatní výsledky

CEP obor

EG - Zoologie

OECD FORD obor

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Projekt

<a href="/cs/project/LC522" target="_blank" >LC522: ICHTYOPARAZITOLOGIE - centrum základního výzkumu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů