Click here to close Hello! We notice that you are using Internet Explorer, which is not supported by Echinobase and may cause the site to display incorrectly. We suggest using a current version of Chrome, FireFox, or Safari.
Echinobase
ECB-ART-43099
Ecotoxicology 1996 Apr 01;52:115-33. doi: 10.1007/BF00119050.
Show Gene links Show Anatomy links

Sublethal effects of cadmium on arm regeneration in the burrowing brittlestar, Microphiopholis gracillima.

D'Andrea AF , Stancyk SE , Chandler GT .


???displayArticle.abstract???
: To assess the sublethal effects of sediment-bound cadmium on arm regeneration of Microphiopholis gracillima, a burrowing brittlestar, experiments were conducted to quantify the tissue and morphology of regenerating arms, the uptake of cadmium in various tissues and the effect M. gracillima had on the cadmium pools in muddy sediments. Regenerated arms of cadmium-exposed M. gracillima are thinner, with proportionally less soft and skeletal tissue and a greater number of developing ossicles than animals held in sediment without cadmium. Microphiopholis gracillima decreased pore water cadmium concentrations in muddy sediments. Uptake of cadmium in tissues dominated by the calcium carbonate endoskeleton was proportional to the measured sediment cadmium concentration, while concentrations in whole regenerating arms were more closely related to the pore water concentration. Both calcium and cadmium are accumulated in the early stages of arm regeneration with an apparent interaction which interferes with ossicle construction. Sediment-bound cadmium has a negative effect on the organism''s recovery from sublethal tissue loss and, ultimately, its long-term survival.

???displayArticle.pubmedLink??? 24193575
???displayArticle.link??? Ecotoxicology



References [+] :
Borowitz, Evidence for calcium channels in brine shrimp: diltiazem protects shrimp against cadmium. 1992, Pubmed