Page 724 - The Toxicology of Fishes

704 The Toxicology of Fishes

Khallaf et al. (2003) Faller et al. (2003) Handy et al. (2002b) Dethloff et al. (2001)
Refs. Smolders et al. (2003) Ptashynski et al. (2002) Hemming et al. (2001) Sepúlveda et al. (2004)

Type of Response Effects of pollution were greater than variation in condition factor associated with season or sex differences. Fish in the most polluted canal had the lowest condition factor (2.07), compared to Fish were larger at the reference site (both length and weight), but no site-dependent differences in condition factor were observed. After 4 weeks’ exposure to effluent, condition factor was correlated with changes in energ

2.19–2.39 in other canals. and lipid contents. and between river catchment areas. contaminants causing this effect.

Some Examples of Pollutant Effects on Condition Factors and Organosomatic Indices in Fish

Pesticides and metals in polluted canals in Egypt Sewage effluent from an industrial plant Chronic dietary exposure to nickel: 0–1000 mg Ni per g food for up to 104 days Fish collected from 7 rivers classified as different quality by river ecosystem classes and laboratory conditions Run off from copper mine tailings. Paper-mill effluent exposure in the laboratory for up to 56 days and field collected animals

Toxic Substance River with discharge from a sewage treatment plant Domestic wastewater exposure for 3 weeks in field

TABLE 16.6 Parameter and Species Condition factor Nile tilapia (Oreochromis niloticus) Gudgeon (Gobio gobio) Zebrafish (Danio rerio) Lake whitefish (Coreogonus clupeaformis) Three-spined stickleback (Gasterosteus aculeatus) Fathead minnow (Pimephales promelas) Rainbow trout (Oncorhynchus mykiss) Hepatosomatic index (HIS) Largemouth bass (Micropterus salmoides floridanus)