光照对蒙古裸腹溞摄食强度的影响  

The effect of light on ingestion capacity of Moina mongolica Daday (Cladocera: Moinidae)

作　　者：赵文[1] 郭莉[1] 徐宪仲[1] 何志辉[1] 

机构地区：[1]大连水产学院生命科学与技术学院,大连116023

出　　处：《生态学报》2005年第2期210-214,共5页Acta Ecologica Sinica

基　　金：辽宁省自然科学基金资助项目 (2 0 0 2 2 10 0 ) ;大连水产学院博士启动基金资助项目 (2 0 0 0 ) ;辽宁省教育厅攻关计划资助项目(2 0 2 13 3 2 0 9~~

摘　　要：利用细胞计数法对不同光照强度、光谱成分、光周期对蒙古裸腹摄食强度的影响进行了研究。结果表明 :光强在 70 0 0 lx时蒙古裸腹对小球藻的摄食强度最高 ,成的滤水率和摄食率分别为 0 .5 2 8± 0 .0 0 9ml/ (ind· h)和 1.113± 0 .0 15μg C/ (ind· h) ,幼的滤水率分别为 0 .4 95± 0 .0 14 ml/ (ind· h)和 1.0 5 1± 0 .0 0 8μg C/ (ind· h)。在蓝光下蒙古裸腹对小球藻的摄食强度明显高于绿光组。光周期 L∶ D为 12∶ 12时蒙古裸腹对小球藻的摄食强度最高 ,成和幼的滤水率分别为0 .4 6 1和 0 .35 5 ml/ (ind· h) ,摄食率分别为 1.2 4 2和 1.0 0 5μg C/ (ind· h) ,而在 L∶ D为 0 :2 4时摄食强度最差 ,成和幼的滤水率分别为 0 .0 70和 0 .0 5 0 ml/ (ind· h)。在自然光照下 ,蒙古裸腹对小球藻的摄食强度在 7∶ 0 0～ 11:0 0和 15 :0 0～ 19:0Moina mongolica Daday, which appears to be the only halophilic species of Moina in the old world, distributes from north Africa, across the Middle East and the Central Russia, Aral Sea, Spain. It is a new record of Cladocera in China. Dalian Fisheries University has initiated a saline water research program including its autecology, reproductive biology, feeding ecology and perspective as live food for marine fish larviculture. However, the effect of light on the ingestion capacity is not reported. A direct counting method was used to estimate the ingestion capacity of Moina mongolica Daday at different light intensity (8500 lx, 7000 lx, 5000 lx, 2000lx and 500 lx), photoperiods (L∶D 0∶24, 6∶18, 12∶12, 18∶6 and 24∶0), spectra(blue light and green light) and common light intensity in laboratory. The experimental animals collected from Lake Xiaochi in Yuncheng city, Shanxi Province in China, in1982, were cultured in marine water at laboratory for 22 years, during which they were fed by Chlorella sp.. The experiment was carried out in illumination culture chambers (HPG-400). Water temperature is 25±1℃. The salinity is about 32. pH value is 8.2. The results showed that, the ingestion capacity of M. mongolica at light intensity 7000 lx was highest. The clearance rates of adult and young animal were 0.528 ± 0.009 and 0.495±0.014 ml/((ind·h)), respectively; and grazing rates were 1.113±0.015 and 1.051±0.008 μgC/(ind·h), respectively . At the blue light, the clearance rates and the grazing rates of M. mongolica is better than those at the green group. The ingestion capacity of adult M. mongolica fed on Chlorella sp. was the best in L∶D=12∶12 group. The clearance rates of adult and young animal were 0.461 and 0.355 ml/(ind·h), and grazing rates were 1.242 and 1.005μgC/(ind·h). The worst ingestion capacity was observed in L∶D=0∶24 group. The clearance rates of adult and young M. mongolica were 0.070 and 0.050 ml/(ind·h), respectively. Under common light intensity in laboratory, the in

关 键 词：蒙古裸腹溞 光照强度 光谱组成 光照周期 摄食强度 

分 类 号：Q41[生物学—生理学]