Effects of dimilin on the blue crab, Callinectes sapidus , in shallow-water habitats

摘要: Diffubenzuron (Dimilin) is used as an insecticide for control of the gypsy moth. Because it a chitin synthetase inhibitor, can be potential threat to other arthropods, including crustaceans. We static renewal testing paradigm determine LC50 Dimilin WP-25 juvenile blue crabs (carapace width: 25–60 mm). Both molt stage dose frequency effect toxicity. When we exposed at random stages, LC50=3.5 mg l−1. were on day molt, LC50=300 μg If initial exposure occurred and subsequently repeated doses, LC50=18.5 Effects age molt-stage sensitive. include review data available effects in marine estuarine environments.