CAJ | 학술논문

为了解偏顶蛤Modiolus modiolus最适培育条件,采用实验生态学方法研究了海水盐度、 pH和饵料对偏顶蛤浮游幼虫生长和发育的影响。结果表明：3种生态因子对偏顶蛤浮游幼虫的生长发育均有显著影响(P<0·05)；幼虫生长发育的适宜盐度为25~35,最适盐度为30,但幼虫对高盐度的耐受力比对低盐度的耐受力强；幼虫生长发育的适宜pH为6~9,最适pH为8；饵料试验中,湛江等鞭金藻Isochrysis zhan：jiangensis、新月菱形藻Nitzschia closterium和牟氏角毛藻Chaetoceros muelleri Lemmerman 3种饵料混合投喂的效果最好,牟氏角毛藻单独投喂以及牟氏角毛藻与新月菱形藻混合投喂的效果最差,湛江等鞭金藻基本上能够满足偏顶蛤早期浮游幼虫生长发育的营养需求,单一投喂湛江等鞭金藻和新月菱形藻组与投喂含金藻的混合饵料组对幼虫的饲喂效果无显著性差异(P>0·05)。
위료해편정합Modiolus modiolus최괄배육조건,채용실험생태학방법연구료해수염도、 pH화이료대편정합부유유충생장화발육적영향。결과표명：3충생태인자대편정합부유유충적생장발육균유현저영향(P<0·05)；유충생장발육적괄의염도위25~35,최괄염도위30,단유충대고염도적내수력비대저염도적내수력강；유충생장발육적괄의pH위6~9,최괄pH위8；이료시험중,담강등편금조Isochrysis zhan：jiangensis、신월릉형조Nitzschia closterium화모씨각모조Chaetoceros muelleri Lemmerman 3충이료혼합투위적효과최호,모씨각모조단독투위이급모씨각모조여신월릉형조혼합투위적효과최차,담강등편금조기본상능구만족편정합조기부유유충생장발육적영양수구,단일투위담강등편금조화신월릉형조조여투위함금조적혼합이료조대유충적사위효과무현저성차이(P>0·05)。
The effects of seawater salinity, pH and diet on growth and development of the planktonic larvae in clam Modiolus modiolus were investigated in order to explore the optimum culture conditions. It was found that growth and development of the planktonic larvae were significantly affected by the 3 ecological factors ( P<0 . 05 ) . The planktonic larvae had normal growth and development at a salinity of 25-30 , with the optimal salinity of 30 , show-ing stronger tolerance to high salinity than to low salinity. The suitable pH range for growth was changed from 6 to 9, and the best growth and maximal survival was observed in the larvae at pH 8. In diets experiment, both the best growth and higher survival rate were found in the larvae fed the alga mixture of Isochrysis zhanjiangensis, Nitzschia closterium and Chaetoceros muelleri Lemmerman. However, the worst growth and lower survival were observed in the planktonic larvae fed single Chaetoceros muelleri Lemmerman or mixture of Chaetoceros muelleri Lemmerman with Nitzschia closterium, indicating that Isochrysis zhanjiangensis meets the nutritional requirement of the planktonic lar-vae for early growth and development. There were no significant differences in growth and survival in larvae fed Iso-chrysis zhanjiangensis and Nitzschia closterium only and the mixed microalgae containing Isochrysis zhanjiangensis (P>0. 05).