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Articles by Zhu Guang-Jian
Total Records ( 2 ) for Zhu Guang-Jian
  ZHU Guang-jian , Han Nai-jian , HONG Ti-yu , TAN Min , YU Dong-mei and ZHANG Li-biao
  One male bat was captured by mist-net on a telegraph pole in the Li Autonomous County, Hainan Island in November 2007. It was identified as Nyctalus plancyi (Chiroptera: Vespertilionidae) based on the morphological data and mitochondrial ND1 gene sequence, and presented as the first record from Hainan Island. N. plancyi, which roosted daily on a telegraph pole in Hainan Island, emitted a pulse with an energy frequency between 33 - 34 kHz, and pulse duration between 1.3-1.9 ms, maximum identity based on ND1 sequence analysis between Hainan Island and Sichuan was 99%.
  Zeng Yu , Zhang Xin-Wen , Zhu Guang-Jian , Gong Yan-Yan , Yang Jian and Zhang Li-Biao
  In order to study the relationship between landmarks and spatial memory in short-nosed fruit bat, Cynopterus sphinx (Megachiroptera, Pteropodidae), we simulated a foraging environment in the laboratory. Different landmarks were placed to gauge the spatial memory of C. sphinx. We changed the number of landmarks every day with 0 landmarks again on the fifth day (from 0, 2, 4, 8 to 0). Individuals from the control group were exposed to the identical artificial foraging environment, but without landmarks. The results indicated that there was significant correlation between the time of the first foraging and the experimental days in both groups (Pearson Correlation: experimental group: r=-0.593, P<0.01; control group: r=-0.581, P<0.01). There was no significant correlation between the success rates of foraging and the experimental days in experimental groups (Pearson Correlation: r=0.177, P>0.05), but there was significant correlation between the success rates of foraging and the experimental days in the control groups (Pearson Correlation: r=0.445, P<0.05). There was no significant difference for the first foraging time between experimental and control groups (GLM: F0.05,1=4.703, P>0.05); also, there was no significant difference in success rates of foraging between these two groups (GLM: F0.05,1=0.849, P>0.05). The results of our experiment suggest that spatial memory in C. sphinx was formed gradually and that the placed landmarks appeared to have no discernable effects on the memory of the foraging space.
 
 
 
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