摘要
从单胞藻粒径大小、表面结构、生化组成及饵料浓度等角度开展了合浦珠母贝(Pinctada fucata)对不同种类及浓度的单胞藻摄食与消化效果研究。投喂粒径大小相近的牟氏角毛藻(Chaetoceros muelleri)和湛江叉鞭金藻(Dicrateria zhanjiangensis)混合藻,粒径大小不同的亚心形扁藻(Platymonas subcordiformis)和海水小球藻(Marine chlorella)混合藻,用细胞计数法检测剩余混合藻中各单胞藻浓度。分别投喂以上4种不同浓度梯度的单胞藻,观察比较粪便中单胞藻消化状况。结果显示,合浦珠母贝对粒径大小相近的单胞藻没有表现出明显的选择性摄食(P>0.05),对粒径较大的单胞藻摄食率明显高于粒径较小的单胞藻(P<0.05);随着投喂单胞藻浓度的升高,合浦珠母贝对单胞藻的消化程度降低。
An experiment was conducted to explore the effect of ingestion and digestion of pearl oyster( Pinctada fucata) on microalgae of different types and concentrations from aspects of particle size,surface structure,biochemical composition and feed concentration. The mixture of Chaetoceros muelleri and Dicrateria zhanjiangensis with similar size and the mixture of Platymonas subcordiformis and Marine chlorella with different sizes were fed to pearl oysters. Cells count was detected in the remaining mixture microalgae.C. muelleri,D. zhanjiangensis,P. subcordiformis and M. chlorella of different concentrations were fed to pearl oyster to compare the digestion of microalgae in feces. The results show that selective feeding was not significantly different( P > 0. 05) between microalge with similar size,while the ingestion rate raised with increasing size( P < 0. 05). The digestion rate decreased with increase of diet concentration.
出处
《南方水产科学》
CAS
CSCD
北大核心
2016年第3期112-118,共7页
South China Fisheries Science
基金
国家自然科学基金项目(31372525)
现代农业产业技术体系建设专项资金(CARS-48)
广东省海洋渔业科技推广专项(A201201A02
A201201A03
A201201A08
A201301A02
A201301A08
B201300B08)
关键词
合浦珠母贝
单胞藻
选择性摄食
消化
Pinctada fucata
microalgae
selective feeding
digestion
