Studies on the Toxicity of Mirex to the Estuarine Grass Shrimp, Palaemonetes pugio

Estuarine grass shrimp (Palaemonetes) are common along the Gulf and Atlantic coasts (Faxon 1879, Gunter 1950, Williams 1965, Fleming 1967). These small decapods are found ranging through freshwater areas, brackish estuaries and into inshore saline waters where they are occasionally the predominant animal (Gunter 1950). In view of the trophic significance of these shrimp, static system bioassays were made to determine the sensitivity of Palaemonetes pugio to Mirex in water and to 0.15% Mirex bait granules, since the USDA is continuing the fire ant control program but has plans in the future to substitute 0.15% Mirex bait for the 0.3% bait presently in use (J. I. Lowe 1972, personal communication)

Studies on the Toxicity of Mirex to the Estuarine Grass Shrimp, Palaemonetes pugio

Estuarine grass shrimp (Palaemonetes) are common along the Gulf and Atlantic coasts (Faxon 1879, Gunter 1950, Williams 1965, Fleming 1967). These small decapods are found ranging through freshwater areas, brackish estuaries and into inshore saline waters where they are occasionally the predominant animal (Gunter 1950). In view of the trophic significance of these shrimp, static system bioassays were made to determine the sensitivity of Palaemonetes pugio to Mirex in water and to 0.15% Mirex bait granules, since the USDA is continuing the fire ant control program but has plans in the future to substitute 0.15% Mirex bait for the 0.3% bait presently in use (J. I. Lowe 1972, personal communication)

Project LOBSTAQ : investigations on lobster (Homarus americanus) aquaculture, ecology and tertiary sewage treatment in controlled environmental systems

Research was based on different aspects of incorporating Homarus Americanus cultural into the multi-trophic level marine aquaculture-wastewater treatment system of the Environmental Systems laboratory at Woods Hole. Experiments were directed .toward optimizing food sources available within the system, developing designs to facilitate high density lobster growth, and elucidating the ecology of Homarus. The aquaculture-wastewater treatment system uses secondary sewage effluent or its equivalent as a nutrient source for marine phytoplankton ponds which in turn are fed into raceways containing racks of bivalves. The bivalves produce soluble nutrients used to raise macroalgae, and solid material (biodeposits) used to raise various deposit feeders. Almost all the N and over 50% of the P is removed from the wastewater by the artificial food chain.Prepared under NSF Grant GY-1154