摘要: From September to November 2007,we recorded and analyzed the echolocation calls of Ricketti's big-footed bat(Myotis ricketti) ,in call-recording cages using BatSound software.We also calculated measurements of wing shape for these bats. We compared the parameters of echolocation calls and wing shape between males and females.The results showed that only the interpulse interval was significantly different between males(68.49±10.99 ms) and females(83.61±13.77 ms) (t-test:t=-2.72,P<0.01) ,while the pulse duration(male:4.28±0.34 ms,female:4.64±0.97 ms) ,the dominant frequency(40.31±1.36 kHz,40.20±1.32 kHz) ,the max frequency(72.40±2.37 kHz,72.20±2.66 kHz) ,the min frequency(29.00±1.16 kHz,28.60±1.58 kHz) ,and the measurements of wing shape were not significantly different between males and females. M.ricketti had average wing loading(male:8.61±0.72 N/m2,female:8.51±0.81 N/m2) ,high aspect ratio(7.96±0.31,8.09±0.34) and high wing tip shape index(2.93±1.09,2.48±1.02) .
摘要: Although the distrib ution of Rickett’s big-footed bat (Myotis ricketti Thoma s,1894) had been widely reported from Heilongjiang to Hong Kong, no distribution in Hainan Island is reported. The authors collected 27 specimens of Rickett’s big-footed bat from Mt. Diaoluoshan and Huoshankou of Hainan I s land in 2004, showing that Rickett’s big-footed bat is widely distribute d from Heilongjiang to Hainan Island, ranging from the northernmost to the south ernmost parts in Chin a. The measurements of specimens are less than those of the specimen collected from the mainland of China, and the authors consider it may be necessary to st udy subspe cies differentiation of the Hainan Island population.