+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Stress responses of brown trout, Salmo trutta L., to the cyanobacterium, Microcystis aeruginosa



Stress responses of brown trout, Salmo trutta L., to the cyanobacterium, Microcystis aeruginosa



Environmental Toxicology and Water Quality 11(3): 187-193



Sublethal effects of exposure for 96 h to lysed cells of the cyanobacteria Microcystis aeruginosa PCC 7820 [a strain that is toxic by mouse bioassay and yields microcystins detectable by high-performance liquid chromatography (HPLC)], and M. aeruginosa CYA 43 (a strain that is nontoxic by the mouse bioassay and does not yield microcystins detectable by HPLC), on brown trout (Salmo trutta) were investigated. Exposure of fish (14-90 g) to lysed M. aeruginosa 7820 cells (24-42 micrograms microcystin-LR L-1; 288 micrograms chlorophyll a L-1) caused an increase in plasma cortisol levels. This response was biphasic with a 10-fold increase (t = 0, 8.87 ng mL-1) after 1 h, and a second significant peak after 8 h, before returning to normal levels at 96 h. Plasma glucose levels rose, reaching a peak after 8 h (from 65 mg 100 mL-1 to 116 mg 100 mL-1) before stabilizing. Plasma CI- concentrations decreased after 4 h exposure; levels stabilized to control values. Plasma Na+ was not affected. For fish immersed in lysed M. aeruginosa CYA 43 cells (288 micrograms chlorophyll a L-1), plasma cortisol, glucose, and ion (Na+ and CI-) levels did not significantly change over the 96 h period. It is concluded that fish respond physiologically to the presence of lysed M. aeruginosa 7820 cells and exhibit a classic stress response. Possible lethal consequences of these stresses are discussed.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 009462396

Download citation: RISBibTeXText

DOI: 10.1002/(sici)1098-2256(1996)11:3<187::aid-tox3>3.0.co;2-5


Related references

The number of eggs which remain in the gastric cavity of the female of the sea-trout (Salmo trutta L.) of the rainbow trout (Salmo irideus Gibb.) and the cross between the trout (Salmo trutta m. fario L.) and the sea-trout (Salmo trutta L.) after the art. Compte Rendu Sci math nat Acad polon, 1-3: 11-12, 1950

Cortisol and thyroid hormone responses to acid stress in the brown trout salmo trutta l. Journal of Fish Biology 35(1): 73-84, 1989

The toxicity of the cyanobacterium Microcystis aeruginosa to rainbow trout, Salmo gairdneri Richardson. Journal of Fish Diseases 8(4): 339-344, 1985

Migrations of the Sea trout (Salmo trutta L. ), Brown trout (Salmo trutta M. fario L.) and their crosses. Part 1. Problems, methods and results of tagging. Polskie Archwm Hydrobiol.: 16: 125-140, 1969

Migrations of the sea trout salmo trutta brown trout salmo trutta m fario and their crosses part 1 problem methods and results of tagging. Polskie Archiwum Hydrobiologii 16(2): 125-140, 1969

Genetic analysis of the number of pyloric ceca in the brown trout salmo trutta and the rainbow trout salmo gairdneri 3. effect of the genotype and egg size on expression of this characteristic in the brown trout. Annales de Genetique et de Selection Animale 11(1): 93-104, 1979

Genetic control of the number of pyloric caeca in the brown trout (Salmo trutta L.) and rainbow trout (Salmo gairdneri, Richardson). 3. Effects of genotype and egg size on the expression of the trait in the brown trout. Annales de Genetique et de Selection Animale 11(1): 93-103, 1979

Migrations of the sea trout salmo trutta brown trout salmo trutta m fario and their crosses part 4 general discussion of results. Polskie Archiwum Hydrobiologii 16(2): 181-192, 1969

Migrations of the Sea trout (Salmo trutta L.),Brown trout (Salmo trutta M. fario L.) and their crosses. Part 4. General discussion of results. Polskie Archwm Hydrobiol.: 16: 181-192, 1969

The structure of compound monsters in the embryos of the Dunajee sea-trout Salmo trutta L. and brown trout Salmo trutta m. fario L. II. C.R. Sci math nat Acad polon, 1-3: 11, 1950

The structure of the compound monsters in the embryos of the Dunajec Sea-trout Salmo trutta L. and Brown-trout Salmo trutta f. fario L. Bulletin International de l'Academie Cracovie Cl math nat, 1950BII1-3: 1-11, 1951

Comparison of the behavioral taste responses in brown trout juveniles Salmo trutta trutta from populations of the Baltic Sea and the White Sea. Doklady Akademii Nauk 343(3): 417-419, 1995

Metabolic responses to prolonged starvation, food restriction, and refeeding in the brown trout, Salmo trutta: oxidative stress and antioxidant defenses. Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology 159(4): 191-196, 2012

Cognitive evolution and morphologic comparison of the lake trout salmo trutta lacustris of lake garda italy with salmo trutta carpio salmo trutta marmoratus salmo trutta fario and salmo trutta gairdneri. Atti del Museo Civico di Storia Naturale di Trieste 36(2): 83-106, 1984