Freshwater Crayfish 3(1): 141-159 (1977)
PEER REVIEWED RESEARCH ARTICLE
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Watercress-crayfish polyculture as an economic means of stripping nutrients from enriched waters
An experimental watercress – crayfish polyculture system is described. The watercress bed receives nutrient-rich effluent from a connecting trout hatchery and effectively strips nitrates, ammonia, and phosphorous from the waters. The harvested water-cress also provides a clean and easy food source for crayfish. Preliminary feeding trials indicate that the watercress combined with protein supplement provides a satisfactory crayfish diet in terms of both growth and mortality. The development of watercress-crayfish polyculture is economically promising because of three valuable outputs – cleaner water, watercress, and crayfish.
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Rundquist J, Gall G and Goldman CR. (1977). Watercress-crayfish polyculture as an economic means of stripping nutrients from enriched waters. Freshwater Crayfish 3(1):141-159. doi: 10.5869/fc.1977.v3.141
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