摘要
对复州湾移植放流日本对虾群体放流后1个月到回捕之间的生长特性研究表明:(1)同体长的日本对虾体重差异很小;(2)我们假定虾苗孵化时间为t=0d,那么体长生长高峰在t=50d至t=90d之间,前期雄虾快于雌虾,后期雌虾快于雄虾;(3)体重增长速度呈倒二次曲线型,其拐点雌性tr=863d,雄性tr=788d;(4)合理的放流日期应在5月20日~6月1日,开捕日期在8月上旬。
In
this paper,the growth characteristics of Penaeus japonicus from one month after releasement to
recapture date was studied.The result was as follows:(1)The weight difference is small among
the same body length shrimps.(2)Suppose the hatching time (t) equals 0 day.then,the growth
peak is between 50 day and 90 day.The growth rate of male shrimp is more than that of female
shrimp in earlier stage;In later stage,the result is the contrary.(3)The increasing body weight
rate present converse squarecurve characteristic.The turning
point:tr=863d(female),tr=788d(male).(4)The duration of optimal releasing is from May,20 to June,
1.The allowed capture date is in the first ten day period of August.
出处
《水产科学》
CAS
北大核心
1999年第4期21-24,共4页
Fisheries Science