Journalartikel

Jahr der Veröffentlichung: 1977

Seiten: 95-107

Zeitschrift: Archiv für Fischereiwissenschaft

Bandnummer: 28

Heftnummer: 2-3

ISSN: 0003-9063

Verlag: Bundesforschungsanstalt für Fischerei

Abstract: 
The micropyles of 10 fish spp. [Salmo salar, S. trutta, S. trutta f. lactustris, S. gairdneri, Salvelinus alpinus, S. fontinalis, Coregonus fera, C. macrophthalmus, C. wartmanni and Esox lucius] were examined by the scanning electron microscope. The micropyles of 3 of these species are described for the 1st time. The micropyles are criterions for the determination of eggs. The micropyles were of 2 distinct types. Micropyles with flat micropyle-pit and long micropyle-canal and micropyles without micropyle-pit but only with microplyle-canal were found. The sides of the micropyle-canals often are reinforced by annular or helicoid thickenings. Pike eggs can be fertilized when their micropyles are clogged. Egg envelopes must also be penetrable for sperm at other places.

Harvard-Zitierstil: RIEHL, R. and SCHULTE, E. (1977) SCANNING ELECTRON MICROSCOPICAL INVESTIGATIONS OF MICROPYLES OF SELECTED FRESHWATER TELEOST FISHES, Archiv für Fischereiwissenschaft, 28(2-3), pp. 95-107

APA-Zitierstil: RIEHL, R., & SCHULTE, E. (1977). SCANNING ELECTRON MICROSCOPICAL INVESTIGATIONS OF MICROPYLES OF SELECTED FRESHWATER TELEOST FISHES. Archiv für Fischereiwissenschaft. 28(2-3), 95-107.