Carassius 'gibelio' in the fish communities of the Czech Republic.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F03%3A67030047" target="_blank" >RIV/68081766:_____/03:67030047 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
Carassius 'gibelio' in the fish communities of the Czech Republic.
Original language description
Carassius gibelio is non-indigenous to the ichthyofauna of the Czech Republic. The first specimens penetrated into the area of confluence of the Morava and Dyje rivers in 1975-76. Over 15 years silver crucian carp populated all suitable aquatic habitats.Until the 1990s, the population this species consisted of females only and the reproduction was realised through so-called gynogeny connected with sexual parasitism against males of other cyprinids. First males we found in 1995, their representation inour samples varying between 0 and 18.5%. Our investigations have shown that, besides largely triploid individuals (almost exclusively females ones), there also occur diploid ones (males and some of females) and, occasionally, even tetraploid ones (females). In some habitats the high abundance and biomass of C. gibelio exerts a negative influence on the occurrence of indigenous species mainly, C. carassius and Tinca tinca.
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EG - Zoology
OECD FORD branch
—

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)