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A rice-fish system is a rice polyculture, a practice that integrates rice agriculture with aquaculture, most commonly with freshwater fish. It is based on a mutually beneficial relationship between rice and fish in the same agroecosystem .
Rice polyculture is the cultivation of rice and another crop simultaneously on the same land. The practice exploits the mutual benefit between rice and organisms such as fish and ducks: the rice supports pests which serve as food for the fish and ducks, while the animals' excrement serves as fertilizer for the rice.
By 1989, a semi-intensive (1 kg fish/m −3) seabream and grey mullet pond system by the Gulf of Aqaba on the Red Sea supported dense diatom populations, excellent for feeding oysters. [ 15 ] [ 16 ] Hundreds of kilos of fish and oysters cultured here were sold.
They have a number of distinctive features, including an unusual structure to the jaw, and the presence of an additional bone in the tail. [2] The Japanese rice fish ( O. latipes ), also known as the medaka, is a popular model organism used in research in developmental biology .
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This is a list of census-designated places in the U.S. state of Illinois, by county. Census-designated places (CDPs) are unincorporated communities lacking elected municipal officers and boundaries with legal status. [1] The term "census designated place" has been used as an official classification by the U.S. Census Bureau since 1980. [2]
Illiopolis is a village in Sangamon County, Illinois, United States. The population was 891 at the 2010 census. The population was 891 at the 2010 census. It is part of the Springfield, Illinois Metropolitan Statistical Area .
This is a list of Superfund sites in Illinois designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) environmental law. These sites are listed on the National Priorities List . 13 Sites are listed below.