4Kobraei M E,White D S. 1996. Effects of 2,4 - dichlorophe- noxyscetic acid on Kentucky algae: simultaneous laboratory and field toxicity testings. Archives of Environmental Con- tamination and Toxicology,31(4) :571-580.
5Albrecht M P,Ferreira M F N,Caramaschi E P. Anatomical features and histology of the digestive tract of two related neotropical omnivorous fishes(Characiormes;Anostomidae) [J]. Journal of Fish Biology,2001,58(2) :419+430.
