摘要
在温度 (24 ±1) ℃、盐度30 条件下, 对海湾扇贝 ( Argopecten irradians) 幼贝( 壳长10 ~15 m m) 进行了p H 的亚急性耐受试验和不同p H 条件下氨态氮的急性毒性试验。结果表明: 1) 受试360 h , 幼贝在p H 77 ~82 范围内成活率最高; 2) p H 为763 ,798 , 834 和874 时, 总氨对幼贝的96 h L C50 依次为2001 , 1185 , 332 和055m g/ L;3) 非离子氨的毒性随p H ( ≥834) 的升高而增大, 其毒性大约是离子氨的90倍;4) 对育苗水质的分析表明, 贝苗由室内转入虾池暂养时, p H 对成活率有重要影响。
Under conditions of temperatures (24±1)℃ and salinity 30, the subacute tolerance to pH and the acute toxixity to ammonia at different pH were carried out by using bay scallop \%Argopecten iradiaus\% larvae The results show: 1) the suitable pH for the larvae varies from 7 0~8 6; the most ones are 7 7~8 2; 2) at pH 7 63, 7 98, 8 34, and 8 74, the 96hLC\-\{50\} of total ammonia to the larvae are 20 01, 11 85, 3 32 mg/L and 0 55 mg/L, respectively; 3) when pH are higher than 8 34, pH increasing has doubling and coordinated affect on the toxicity of un-ion ammonia; 4) the toxicity of un-ion ammonia approximately is 90 times larger than that of ion ammonia
出处
《大连水产学院学报》
CSCD
1999年第3期13-18,共6页
Journal of Dalian Fisheries University
关键词
海湾扇贝
幼贝
PH
氨态氮
耐受性
Argopecten iradians\%
pH
ammonia
larvae
tolerance