Effects of copper sulphate onTisbe holothuriaeHumes (Copepoda) and development of tolerance to copper

✍ Scribed by M. Moraïtou-Apostolopoulou; M. Kiortsis; V. Verriopoulos; S. Platanistioti

• Publisher: Springer
• Year: 1983
• Tongue: English
• Weight: 389 KB
• Volume: 99
• Category: Article
• ISSN: 1573-5141
• DOI: 10.1007/bf00015041

✦ Synopsis

A study was made of the toxicity of copper to the marine copepod Tisbe holothuriae Humes and the development of increased tolerance due to acclimation . In sublethal concentrations, copper causes a prolongation of maturation time and a reduction in offspring production . These effects increased proportionally to the copper concentration used, while the respiratory rate (measured at the highest concentration used : 0 .008 mg 1 -1 Cu) increased . A tendency for higher tolerance due to acclimation was also observed . The copper induced delay in maturation time observed in the F 2 generation, became less pronounced from F 3 onwards . In animals exposed at 0 .008 mg 1 -1 Cu the maturation time of F 3 was not statistically different from that of untreated animals . The LC50 48 h also presented an increase due to acclimation in animals exposed at 0 .004 (F 5 ) and 0 .008 mg 1-1 Cu (F3 and F5 generations), but this increase was not statistically significant .