Survival, growth, metallothionein and glycogen levels of Nucella lapillus (L.) exposed to sub-chronic cadmium stress: the influence of nutritional state and prey type.

Leung, K.M.Y. and Furness, R.W. (2001) Survival, growth, metallothionein and glycogen levels of Nucella lapillus (L.) exposed to sub-chronic cadmium stress: the influence of nutritional state and prey type. Marine Environmental Research, 52(2), pp. 173-194. (doi:10.1016/S0141-1136(00)00271-3)

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Publisher's URL: http://dx.doi.org/10.1016/S0141-1136(00)00271-3

Abstract

Dogwhelks Nucella lapillus feed mainly on mussels and barnacles, and may experience periods of starvation. We report effects of nutritional state and prey type on the survival, growth, cadmium (Cd) accumulation, metallothionein (NIT) induction and glycogen stores in N. lapillus exposed to Cd in water. Adult dogwhelks, with similar shell length (30.0 +/-1.5 mm), were either starved or fed to satiation with barnacles Semibalanus balanoides, mussels Mytilus edulis or Cd-dosed M. edulis, and kept in filtered natural seawater ( lt 0.01 mug Cd l(-1)) or Cd-contaminated (400 mug Cd l(-1)) seawater for 80 days. Mortality and individual growth rate were determined. Cd, MT and glycogen were measured in different tissues. Prolonged starvation and exposure to Cd significantly reduced the survivorship of N. lapillus, but feeding could help dogwhelks to combat Cd toxicity and minimise mortality. Extended starvation also caused tissue wastage, leading to higher concentrations of Cd and NIT in tissues, whereas fed animals increased in weight and had lower Cd and NIT concentrations because of the tissue dilution effect.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Furness, Professor Bob
Authors: Leung, K.M.Y., and Furness, R.W.
Subjects:Q Science > QL Zoology
G Geography. Anthropology. Recreation > GE Environmental Sciences
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
Journal Name:Marine Environmental Research
ISSN:0141-1136

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