Effects of sublethal exposure to cadmium on shelter-seeking behavior of juvenile Orconectes rusticus (Girard) crayfish
Sublethal behavioral effect of heavy metals on crayfishes may adversely effect their survival in the environment. They may experience increased predation due to changes in their ability to remain in or under shelter. The effect of sublethal cadmium exposure on the ability of juvenile Orconectes rusticus crayfish to remain in shelter was evaluated. Four different treatment groups were used: a control group not exposed to cadmium, and three experimental groups exposed to 1, 2 ,or 3 mg Cd/L for 7 days. Crayfish were placed, individually, into small glass aquaria containing 3 L of laboratory water, with continuous aeration. Each crayfish was provided with a dark, thigmotactic shelter. Cadmium was introduced into the aquaria on days 1 and 4 to establish and maintain the nominal concentration. On days 5 through 7, observations were taken on each crayfish five times per day, with a minimum of 30 minutes between observations. The locations of the animals were recorded as in cover or in the open area of an aquarium. Repeated measures ANOVA was used to examine the effects of sublethal exposure to cadmium on shelter use by the juveniles.
- OSTI ID:
- 20005500
- Resource Relation:
- Conference: Eighth Symposium on Environmental Toxicology and Risk Assessment: Standardization of Biomarkers for Endocrine Disruption and Environmental Assessment, Atlanta, GA (US), 04/20/1998--04/22/1998; Other Information: PBD: 1999; Related Information: In: Environmental toxicology and risk assessment: Standardization of biomarkers for endocrine disruption and environmental assessment: Eighth volume. Special technical publication 1364, by Henshel, D.S.; Black, M.C.; Harrass, M.C. [eds.], 105 pages.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Ionoregulatory responses of the crayfish Orconectes immunis to selenium in fresh water
Effects of cadmium on the biochemical composition of the freshwater crayfish Procambarus clarkii (Girard, 1852)