Use of blood parameters in fish to assess acidic stress and chloride pollution in French running waters.
The study investigated whether plasmatic parameters in fish such as Cl- content could serve as physiological indicators to evaluate water quality. The variations of plasma Cl- content in two fish species caught in a wide range of rivers representative of the hydrographic system of Lorraine (N-E France) were investigated. First, we studied autochthonous populations of chub (Leuciscus cephalus) which is a widespread species in the rivers of Lorraine. Organisms living in highly mineralised rivers (>1500 microScm(-1))--either naturally or due to salt mine contamination--showed plasma Cl- content significantly greater than organisms living in river with a lower mineralisation. Second, we investigated plasma Cl- content of brown trout (Salmo trutta fario) in poorly mineralised streams (<80 microS cm(-1)) with different degrees of acidification, both on autochthonous and transferred organisms. While indigenous trout maintained their Cl- content even in the acidic streams, transferred trout exhibited an important decrease of Cl- content after 48 h of exposure under acidic conditions.
Masson
Nathalie
N
Laboratoire Ecotoxicité, Biodiversité, Santé Environnementale, Université de Metz, France.
Guérold
François
F
Dangles
Olivier
O
D000818:Animals; D000838:Anions / Q000737:chemistry; D002412:Cations / Q000737:chemistry; D002712:Chlorides / Q000097:blood*; D004784:Environmental Monitoring / Q000379:methods; D005399:Fishes / Q000097:blood*; D005602:France; D005618:Fresh Water / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D014874:Water Pollutants, Chemical / Q000097:blood*; D014877:Water Pollution, Chemical / Q000032:analysis*
D000838:Anions; D002412:Cations; D002712:Chlorides; D014874:Water Pollutants, Chemical