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Effects of various culture conditions on survival and reproduction of red swamp crayfish (Procambarus clarkii)
Nelson RG and Dendy JS 
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Abstract
Red swamp crayfish were subjected to various treatments to determine some of their requirements for brood stock and hatchery management. Concrete tanks (0.002 ha) were used to evaluate the effects of water level decrease on reproduction. Egg-laying occurred in tanks with the bottom always covered with water as well as in tanks with some bottom soil exposed. Shelters for individual adult crayfish did not appear to significantly affect survival at ratios of 0, 0.5, 1, or 2 shelters per crayfish. In plastic pools with soil, calcium chloride at 120 ppm total hardness had no effect (P>0.1) on survival of adult crayfish when compared to sodium chloride at the same total ion concentration (250 micromhos conductivity), and survival did not differ from the control.
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Nelson RG and Dendy JS. (1978). Effects of various culture conditions on survival and reproduction of red swamp crayfish (Procambarus clarkii). Freshwater Crayfish 4(1):305-311. doi: 10.5869/fc.1978.v4.305
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