大连獐子岛海域虾夷扇贝养殖容量

被引:46
作者
张继红 [1 ]
方建光 [1 ]
王诗欢 [2 ]
机构
[1] 中国水产科学研究院黄海水产研究所
[2] 大连獐子岛渔业集团股份有限公司
关键词
虾夷扇贝; 养殖容量; 食物限制性指标; 獐子岛;
D O I
暂无
中图分类号
S932 [水产资源调查与评估];
学科分类号
090803 ;
摘要
现场测定了獐子岛海域的叶绿素a浓度、初级生产力的季节性变化和养殖虾夷扇贝的种群结构;采用生物沉积法,测定了不同规格的虾夷扇贝的滤水率和虾夷扇贝的基本生物学特性。调查结果显示,叶绿素浓度在1.23~2.85mg·m-3范围内,均值为(1.78±0.57)mg·m-3;初级生产力的平均值为(76.6±41.9)mgC·m-2·d-1,虾夷扇贝单位个体的滤水率为(0.55±0.25)L·h-1。结合虾夷扇贝的年产量、海域面积和有关的水文状况等数据,计算了食物限制性指标的数值,摄食压力和调节比率在0.05和1.0之间,而滤水效率小于0.05。结果显示,由于该海域的叶绿素浓度和初级生产力水平较低,海水流速大,因此,水交换带来的悬浮颗粒物为主要食物来源。目前的虾夷扇贝的养殖量(32亿粒)接近生态容量,如果开展筏式养殖,利用整个海域的水体,养殖量增大20倍的空间并达到养殖容量,预计年产量将达到256亿粒。
引用
收藏
页码:236 / 241
页数:6
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