The acute toxicity of zinc, copper and lead to the marine invertebrate Idotea baltica (Crustacea, Isopoda) was evaluated by static bioassays, calculating the LT50 (lethality time for 50%) for males and females. Survival time decreased with increasing concentrations of zinc, copper and lead. Zinc was more toxic to Idotea than copper and lead. Lead was the least toxic of the metals tested. | Tr. J. of Biology 23 (1999) 465–472 © TÜBİTAK Toxicity of Zinc, Copper and Lead to Idotea baltica (Crustacea, Isopoda)* Levent BAT, Murat SEZGİN, Ayşe GÜNDOĞDU, Mehmet ÇULHA University of Ondokuz Mayıs, Sinop Fisheries Faculty, Division of Basic Sciences, Sinop–TURKEY Received: Abstract: The acute toxicity of zinc, copper and lead to the marine invertebrate Idotea baltica (Crustacea, Isopoda) was evaluated by static bioassays, calculating the LT50 (lethality time for 50%) for males and females. Survival time decreased with increasing concentrations of zinc, copper and lead. Zinc was more toxic to Idotea than copper and lead. Lead was the least toxic of the metals tested. Key Words: Zinc, copper, lead, survival time, lethality time, Idotea baltica, bioassay. Çinko, Bakır ve Kurşun’un Idotea baltica (Crustacea, Isopoda)’lara Toksisitesi Özet: Deniz omurgasızlarından Idotea baltica (Crustacea, Isopoda) kullanılarak çinko, bakır ve kurşunun akut toksisitesi statik biyolojik deneylerle ölçülmüş ve hem erkek hem de dişi bireyler için öldürücü zaman (LT50) hesaplanmıştır. Hayatta kalma süreçleri, çinko, bakır ve kurşun konsantrasyonlarının artmasıyla azalmıştır. Çinko, bakır ve kurşundan daha toksik bulunmuştur. Denenen bu metallerden en az toksik olanı ise kurşundur. Anahtar Sözcükler: Çinko, bakır, kurşun, hayatta kalma süresi, öldürücü zaman, Idotea baltica, biyolojik deney. Introduction Marine pollution studies were started in the 1970s, by which time considerable base–line data for the marine ecosystem were available. Most marine pollution is caused by domestic wastes, industrial wastes, oil wastes, pesticides, insecticides, radioactive wastes and metals. Coastal waters in particular are increasingly affected by such pollutants, some of the most important of which are metals. Some heavy metals such as iron, cobalt, copper and zinc are essential to many organisms, while others such as cadmium, lead and mercury are never benefical and are often harmful
