水产科学
水產科學
수산과학
FISHERIES SCIENCE
2010年
1期
19-22
,共4页
李文姬%薛真福%李华琳%张明%王伟东%鲁学辉%刘项峰%滕炜鸣
李文姬%薛真福%李華琳%張明%王偉東%魯學輝%劉項峰%滕煒鳴
리문희%설진복%리화림%장명%왕위동%로학휘%류항봉%등위명
虾夷扇贝%天然苗种%中间育成率%密度
蝦夷扇貝%天然苗種%中間育成率%密度
하이선패%천연묘충%중간육성솔%밀도
Patinopecten yessoensis%wild spat%intermediate breeding%density
自然海区采集的虾夷扇贝苗种比人工苗种晚2个月,为了实现当年采苗,当年培育成3 cm以上增养殖用苗种,2006-2008年,就虾夷扇贝中间育成技术开展了试验研究.育成密度为90~110个/层,密度对中间育成率影响不显著.密度为70~90个/层,平均壳高达到3.28 cm,群体组成中≥3 cm个体比例为83.33%;密度为120~130个/层,平均壳高3.08 cm,群体组成中≥3 cm个体比例为61%;密度为160~170个/层,平均壳高2.77 cm,群体组成中≥3 cm个体比例仅为22%,密度对苗种生长影响显著.分苗时间早晚对苗种生长有一定影响,分苗时间早,天然苗可充分利用7-8月快速生长期快速生长,提高3 cm以上个体的育成率.中间育成期间的水温对育成率有一定影响,23 ℃以上水温持续时间较长时,育成率下降.
自然海區採集的蝦夷扇貝苗種比人工苗種晚2箇月,為瞭實現噹年採苗,噹年培育成3 cm以上增養殖用苗種,2006-2008年,就蝦夷扇貝中間育成技術開展瞭試驗研究.育成密度為90~110箇/層,密度對中間育成率影響不顯著.密度為70~90箇/層,平均殼高達到3.28 cm,群體組成中≥3 cm箇體比例為83.33%;密度為120~130箇/層,平均殼高3.08 cm,群體組成中≥3 cm箇體比例為61%;密度為160~170箇/層,平均殼高2.77 cm,群體組成中≥3 cm箇體比例僅為22%,密度對苗種生長影響顯著.分苗時間早晚對苗種生長有一定影響,分苗時間早,天然苗可充分利用7-8月快速生長期快速生長,提高3 cm以上箇體的育成率.中間育成期間的水溫對育成率有一定影響,23 ℃以上水溫持續時間較長時,育成率下降.
자연해구채집적하이선패묘충비인공묘충만2개월,위료실현당년채묘,당년배육성3 cm이상증양식용묘충,2006-2008년,취하이선패중간육성기술개전료시험연구.육성밀도위90~110개/층,밀도대중간육성솔영향불현저.밀도위70~90개/층,평균각고체도3.28 cm,군체조성중≥3 cm개체비례위83.33%;밀도위120~130개/층,평균각고3.08 cm,군체조성중≥3 cm개체비례위61%;밀도위160~170개/층,평균각고2.77 cm,군체조성중≥3 cm개체비례부위22%,밀도대묘충생장영향현저.분묘시간조만대묘충생장유일정영향,분묘시간조,천연묘가충분이용7-8월쾌속생장기쾌속생장,제고3 cm이상개체적육성솔.중간육성기간적수온대육성솔유일정영향,23 ℃이상수온지속시간교장시,육성솔하강.
The intermediate culture of wild Japanese scallop Patinopecten yessoensis spats collected two months later than the artificial spat was conducted to produce over 3 cm shell length juveniles for aquaculture from 2006 to 2008. It was found that there was no significant difference in survival at stocking density from 90 to 110 individuals/layer in a net cage. The scallop was 3.28 cm in average shell height at the stocking density of 70~90 ind/layer, in which the individuals with shell height of over 3 cm accounting for 83.33%. When the densities were 120~130 ind/layer, the scallop was 3.08 cm in average shell height, the individuals with shell height of over 3 cm accounting for 61%. The scallop was 2.77 cm in average shell height at stocking density of 160~170 ind/layer, the individuals with shell height of over 3 cm accounting for only 22%. Restocking time affected significantly the growth of the scallop. The wild spat growth was improved in July and August by early restocking and thus large size scallop was obtained. The survival of the wild spats was reduced at water temperature of over 23 ℃ during the intermediate breeding.