Rotary marsh shrimp is native to the Indo-Pacific region, is the world's large freshwater shrimp farming species. At present, the world has more than 20 countries to introduce the species, and artificial culture, and the scale is getting bigger and bigger.
The period from 1984 to 1992, the world's production of rosenbergii shrimp increased by about three times, the total production reached 31,200 tons, of which Asia's production accounted for 92% of the world's production. The remainder was produced mainly in North, Central and South America. A small amount of Rottweiler shrimp is produced in Africa, accounting for only 0.2 percent of world production.
The Asian region is the main area of development of the roe shrimp. 1992, Vietnam's roe shrimp production in Asia accounted for 42%, Thailand accounted for 34%.
Between 1991-1992, India's development is faster, its rotenbachia shrimp production in one year increased 10 times, accounting for 7% of the total production in Asia in that year.
Africa's production of Rottweiler shrimp, mainly in Mauritius, Malawi, Zimbabwe and Reunion Island. Small-scale farming also occurs in Egypt, Mozambique, Sierra Leone and South Africa.
Most of the Rottweiler shrimp production in the United States is from Hawaii, the rest from other southern states. in the early 1970s, in the United States, Hawaii solved the technical problems of cultivating large quantities of shrimp fry, the pond acre yield reached 200 to 225 kg.
Hawaii's Rochester shrimp research and production in the Western Hemisphere leading level.
Mexico is the main country in North America rosenbergii shrimp farming, with more suitable natural conditions than the U.S. In 1988 its production peaked at a record 410 tons.
El Salvador's roach production is still very low, but its development potential is very large. 1992, the Dominican **** and the country's production reached 164 tons.
Puerto Rico is actively exploiting the consumer market for Rottweiler shrimp in the United States. During 1990-1992, annual production has remained steady at 100 tons.
In 1992, Martinique, Guadeloupe and Reunion Island in French Africa, French Polynesia in the Pacific, and Guyana*** in South America produced nearly 170 tons of Rottweiler shrimp, and production has been essentially stable.
In South America, Ecuador and Brazil are the main producers of Rottweiler shrimp outside the Asian region, with total production in 1992 of 850 tons and 650 tons, respectively.
Colombia in the mid-1980s, the development of roach shrimp farming. the late 1980s, total production reached more than 100 tons.
In Brazil, the country is distributed hundreds of small-scale Rochester shrimp farms, mostly in the area of 0.2 to 2 hectares or so, a few large-scale farms, its area can reach 10 to 50 hectares. Their total production in 1991-1993 was about 1,200 tons, which accounted for about 24% of their total national shrimp production. Most Brazilian farms utilize a semi-intensive culture model, and in 1993, there were 32 hatcheries throughout the country with a culture area of more than 700 ha. In general, production levels in the southern part of the country range from about 1,000 to 1,500 kg/ha, with a shorter period of time suitable for culture due to the winter season, while the northern and northeastern parts of the country are more productive, with yields of about 1,000 to 2,500 kg/ha. In Brazil, there is a large domestic consumer market for farmed rock shrimp, while large-size (90 grams or more) rock shrimp catches are exported in large quantities to North America and Europe.
It is expected that in the 1990s, the world's aquaculture will continue to grow rapidly, and the main area of development is still in Asia. Although there are still problems in the development of culture, such as seed supply, market demand, breeding diseases, but the overall development trend is widely viewed favorably, mainly due to the following reasons: ① As in recent years in various countries of the culture of the rosenbergii shrimp in the practice of farming, aquaculture technology is becoming more mature. ② Rochester shrimp individual large, fast-growing, nutrient-rich, tasty meat, is an excellent breeding species. ③ With the impact of marine shrimp farming diseases in recent years, the world's total shrimp production declined slightly, while the market demand is growing, the rosenbergii shrimp farming production will partially replace the production of marine shrimp. ④ aquaculture production, most in the pond, the harm to the environment is small, is conducive to maintaining ecological balance. ⑤ production inputs less than the culture of seawater shrimp, the market price is high, the economic benefits are obvious.
In the past 20 years, due to the introduction of many countries, has expanded to North America (South), South America, Oceania, Africa, Europe and other regions. So far, it has become a worldwide freshwater shrimp farming species.