Growth differences in different biotypes of the hybrid complex of Cobitis elongatoides x Cobitis tanaitica (Actinopterygii: Cypriniformes: Cobitidae) in the Okna River (Danube River basin), Slovakia

0478257 - ÚBO 2018 RIV PL eng J - Journal Article
Fedorčák, J. - Koščo, J. - Halačka, Karel - Manko, P.
Growth differences in different biotypes of the hybrid complex of Cobitis elongatoides x Cobitis tanaitica (Actinopterygii: Cypriniformes: Cobitidae) in the Okna River (Danube River basin), Slovakia.
Acta Ichthyologica et Piscatoria. Roč. 47, č. 2 (2017), s. 125-132. ISSN 0137-1592. E-ISSN 1734-1515
R&D Projects: GA ČR GA13-12580S
Institutional support: RVO:68081766
Keywords : annulus * back-calculated length * loach * clone * polyploidy
OECD category: Zoology
Impact factor: 0.708, year: 2017

In our study, we first confirmed that yearly increments and maximal age of Cobitis individuals are affected by different ploidy. Contrary, the L-W relations of gutted diploid and triploid females did not differ and they were affected only by sex. We suggest that the intensity of growth is more affected by ploidy, while the L-W of Cobitis is determined by intensity of feeding and stage of gonad development at the local conditions during season. Therefore, in the future studies of Cobitis growth and condition parameters the ploidy level of individuals should also be considered.
Permanent Link: http://hdl.handle.net/11104/0274387