|
|
Species determination of coregonid stocks
Prokeš, Miroslav ; Baruš, Vlastimil ; Peňáz, Milan ; Kubišta, O. ; Melichar, M. ; Špinar, M.
On the basis of results in reproduction biology, early ontogenesis and morphometrics of Coregonus maraena, C. peled and their reciprocal hybrids, the characterization of artificial reproduction development and morphometrical parameter changes in the parental species due to artificial hybridization is represented here from 1970 up to the present. On the example of populations of both aquacultured coregonid species, reared in the region of the Českomoravská vrchovina Highland, the determinative characterization of eggs, eleuterembryos and juvenile specimens are presented. To be the most important determinative characters, considered are: egg size, number of myotomes, size of hatching embryos, number of gill rackers, mouth position, body depth, number of rays and anal fin size. The actual population of C. maraena does not differ morphometrically from its state before 1970, the population of C. peled differs morphometrically from the state after introduction in 1970.
|
guest ::
