title: Effect of environment with low dinoflagellate concentration on the toxicity to mice of alcoholic extracts from the sponge Tedania ignis.
abstract: We have examined the toxicity of samples of sponges from mangrove lagoons in Venezuela, rich in dinoflagellates [1972 (1710, 4642) dinoflagellates/liter (median and 90% confidence interval of 4 samples, spanned over an 8 month period)]. After transferring them for 135 days to a coral reef poor in dinoflagellates [35 (18, 87) dinoflagellates/liter (4 samples)] there was an 85% decrease in lethal potency to mice.
mesh_terms: D000818:Animals; D004141:Dinoflagellida; D007928:Lethal Dose 50; D008297:Male; D008387:Marine Toxins / Q000633:toxicity*; D051379:Mice; D011161:Porifera; D014020:Tissue Extracts / Q000633:toxicity
chemical_list: D008387:Marine Toxins; D014020:Tissue Extracts