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《Sichuan Journal of Zoology》 2014-01
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The Response of Pardosa pseudoannulata's Chemoreceptor in Locating the Prey

WANG Bo;HUANG Ting;HAN Meng;WANG Xinlei;CHANG Yuting;HUANG Xinyi;LI Yanyu;YAN Hengmei;School of Life Sciences,Hunan Normal University;Beijing Normal University,Zhuhai Campus;  
To evaluate the function of the wolf spider( Lycosa) olfactory during predation,the sensitivity of wolf spider against odorous and odorless sources of Drosophila melanogaster were compared laboratorially. At close distances,the selection index of the wolf spider for the odorous tissue fluid was significantly higher than that of odorless source. The residence time also showed a similar changing trend. However,with the increasing of distance,the sensitivity of wolf spider against odorous source would be decreased. Significantly decreased selection index was observed when the distance was longer than11 cm. Therefore,the sensitivity of wolf spider to the odor would be elevated along with the decreasing of the distance to the odorous source,whereas the sensitivity would be decreased as the distance increased. Moreover,the distance against odorous source showed clear correlation with the selection index. The result showed that the wolf spider had a high sensitivity to the odor of body fluid of D. melanogaster than the odor of tissue fluid.
【Fund】: 国家自然科学基金资助项目(No.31172107 31372159);; 广东省大学生创新训练项目(No.1317713021 1317712037)
【CateGory Index】: S476.2
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