CHROMIUM TOXICITY ON 2 LINKED TROPHIC LEVELS .1. EFFECTS OF CONTAMINATED ALGAE ON DAPHNIA-MAGNA

被引：19

作者：

GORBI, G ^{[1
]}

CORRADI, MG ^{[1
]}

机构：

[1] UNIV PARMA,IST BOT,I-43100 PARMA,ITALY

来源：

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY | 1993年 / 25卷 / 01期

关键词：

D O I：

10.1006/eesa.1993.1007

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effects of feeding Daphnia magna on algae (Scenedesmus acutus) pretreated with different concentrations of Cr(VI) were studied. A positive effect on growth and newborn production rate was observed in the daphnids fed on algae exposed to 1 mg/liter Cr(VI). Fecundity and growth were drastically reduced in daphnids fed on algae exposed to 10 mg/liter Cr(VI). Since the algae, cultured in the presence of these two Cr(VI) concentrations, supplied daphnids with similar amounts of chromium, the observed effects on the population dynamics of D. magna were attributed more to alterations of the nutritional value of the algal food, due to the Cr treatment, than to a toxic effect of the metal. © 1993 Academic Press. All rights reserved.

引用

页码：64 / 71

页数：8

共 18 条

[1] LONGEVITY AND REPRODUCTION OF DAPHNIA-PULEX (DEGEER) EXPOSED TO CADMIUM-CONTAMINATED FOOD OR WATER [J].