摘要
本文研究 5种神经递质和 1种神经肽对两种牡蛎幼虫附着和变态的诱导效应 .结果表明 :L 多巴对牡蛎幼虫附着行为的诱导快速而有效 ,浓度 1 0 μmol/dm3 ,2h内有附着行为的幼虫约占 5 0 % ,并使之正常变态 .肾上腺素、去甲肾上腺素和L 多巴均能有效地诱导两种牡蛎幼虫变态 ,它们的最适诱导浓度分别为 5 0、5 0和 5 μmol/dm3 ,诱导变态率分别达 97.1 %、90 .6 %和 70 .5 % (长牡蛎 ) ,74.9%、74.3%和 37.2 % (僧帽牡蛎 ) ;多巴胺的诱导变态效果不显著 ,而γ 氨基丁酸和 5 羟色胺不能有效诱导变态 .两种牡蛎幼虫对上述有效诱导药物的反应 ,长牡蛎优于僧帽牡蛎 .肾上腺素诱导长牡蛎 ,最适处理时机在眼点幼虫后期 ,持续处理时间约
Five neurotransmitters and a neuropeptide were examined for induction of settlement and metamorphosis in larvae of two oysters Crassostrea gigas and Ostrea cucullata .The results indicated that L 3,4 dihydroxyphenylalanine(L DOPA)inductive settlement behavior was rapidly effective with about 50% larvae at concentration 10μmol/dm 3 within 2h,subseequently made them metamorphosis.Epinephrine (EPI) norepinephrine (NE) and L DOPA were effctive to induce larvae metamorphosis,at optimal inductive concentration 50,50 and 5μmol/dm 3 respectivitly,given 97.1%,90.5% and 70.5% metamorphosis for C.gigas and 74.9%,74.3% and 37.2% for O.cucullata .Incontrast,γ aminobutyric acid and 5 hydroxytryptamine were ineffective.Responses of C.gigas metamorphosis to chemical induction was more active than O.cucullata .By examining EPI to C.gigas ,it was indicated that inductive occasion was at post eyed larvea for exposure treatment within 2h.[WT5F1]
出处
《台湾海峡》
CAS
CSCD
2001年第1期20-26,共7页
Journal of Oceanography In Taiwan Strait
基金
福建省重中之重资助项目
