【摘要】 作者对引进的红罗非鱼进行了生物学特性、繁殖育种及海水驯养等方面的试验研究,结果得出:①亲鱼的怀卵量与体长呈正相关(关系式为:Y=124.78L—588.8),在北方地区每年产卵3—4次,产卵量为怀卵量的1/2;②水温25—30℃,11—18d受精卵孵出鱼苗;③红罗非鱼不仅可在淡水中生存,且在自然海水和半咸水中均能生存,是海水养殖的优良品种;④红罗非鱼同虾混养,可提高鱼虾成活率,增大养成规格。更多还原

【Abstract】 The breedings, domestication and other biological characteristics of Red Java tilapia (Oreochormis) were studied in the experiment. The experiment results are: (1) The amount of eggs of the parent fish is in positive interrelation with the body length(L), Y=124.78L - 588.8. In the north part of China, one fish can spawn 3-4 times every year, releasing half of it’s eggs each time. (2) The juvenile fish can be hatched out of the fertilized eggs in 11-18 days in 25-30℃. (3) Red Java tilapia can live not only in fresh water but also in sea water and semi-sea water. Therefor, it is a good strain for culture in saline water. (4) If cultured together with prawn, the survival rate and body size of both fish and prawn can increase.更多还原