摘要
大泷六线鱼生长较快，体重生长拐点在３．６龄，性成熟较早，２龄开始成熟，３龄绝大部分成熟。该鱼怀卵量很少，大多数在３０００～５０００粒，通常不超过１００００粒。由于该鱼繁殖力低，资源量小，无大的自然群体，在开发使用时应注意合理适度，一旦资源被破坏即很难恢复。综合大泷六线鱼生长快，性成熟早和繁殖力低等特点，认为较合理的捕捞规格应定于３龄以上，体长最小在２００ｍｍ，纯体重最小在１９０ｇ，保护小于此规格的鱼。年捕捞量以不超过３０００ｔ为宜。
Hexagrammos takii grows fairly quick, and its inflection point of body weight increment is at 3.6 years old. Some of it become mature at 2 years old, but most of it at 3 years old. Its fecundity is usually from 3000-5000 per female and less than 10000. In addition its resource regenerative capacity is too low to form a large natural stock. Therefore the exploitation of it should be rational and moderate. Once its resource is destroyed, it will be very difficult to get it recovered. According to its characteristics of quick growth,early maturity and low fecundity, it is considered the rational catch age should be over 2 years old and the minimum catchable size is 200 mm in body length,190 g in net weight, and the fish less than this size should be protected. It is suitable to keep a yield under 3000t/year.
出处
《大连水产学院学报》
CSCD
1998年第2期24-28,共5页
Journal of Dalian Fisheries University
关键词
大泷六线鱼
资源
合理利用
Hexagrammos otakii
resources
rational utilization
