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Experimentelle Untersuchungen an Rivulus cylindraceus (Cyprinidontidae, Rivulinae) zum Einfluß subletaler Konzentrationen ionogener Detergentien auf Embryonen, Larven und Jungfische
Author(s) -
Wienberg Reinhard
Publication year - 1977
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.1977.3510620304
Subject(s) - biology , hatching , larva , embryo , zoology , ecology , fishery
Embryos, larvae and fry of the cyprinidontid Rivulus cylindraceus , subjected to sublethal concentrations of the branched alkyl benzene sulfonate TBS, were investigated with respect to mortality rates, deformities, hatching and activity (frequency of heart pulsation, pectoral fin beating and body movements of the embryos, swimming behaviour and activity of larvae and fry). If environmental conditions are optimal, sublethal concentrations seem to have no effect on an entire larval or young fish stock. On the other hand, if other stressing environmental factors of natural or human origin accompany them, such as lack of nutritional supply, an effect on a stock is possible at low sublethal concentrations.