Chinese shrimp (for shrimp East)
Most of China known as the shrimp in our shrimp, prawns, prawns, also known as freshwater shrimp (female), Yellow shrimp (male), Japan is being called the big shrimp, mainly in China, the Bohai Sea, Yellow Sea and northern East China Sea also has a small distribution , is the proliferation of China's major aquaculture species. Its characteristics are:
1 large individual
Natural waters females generally 16 to 20 cm in length and weighing 70 to 80 grams, the largest body for up to 26 cm, weighing 150 g; males is generally 14 to 16 cm in length and weighing 40 to 50 grams. Shrimp general female body length 12 to 15 cm, weight 20 to 30 grams.
(2) rapid growth
General farming 100 to 120 days, average body length of up to 12 cm or more, weighing 20 grams or more.
3. Adaptability
Chinese shrimp is low, euryhaline species; culture period the temperature range of 14 to 30 degrees Celsius, the optimum temperature of 25 degrees Celsius; lethal temperature 4 degrees Celsius, 38 degrees Celsius heat death; suitable salinity range from 0.2% to 4%. In dissolved oxygen as low as 2 mg / l and still grow normally.
4 insufficient seed source
Broodstock winter and artificial breeding technology has matured, can be mass-produced factory nursery, seed source has been resolved.
5 easy-to-capture
Because unlike Japan, has strong potential as shrimp sand habits, it can release on close shrimp, capture method is simple. |