Component matching among the auditory organs of insectivorous bats
Objective:To understand the component matching of the insectivorous bats' auditory organs.Methods:The characteristic parameters such as length of the external ear (L),helve length of the malleus (L1),crus longum length of the incus (L2),area of tympanic membrane (S1) and stapes' foot plate (S2),height (H) and bottom width (W) of the cochlea of five insectivorous bat species including Scotomanes ornatus,Pipistrellus abramus,Miniopterus fuliginosus,Rhinolophus macrotis,Hipposideros armiger were determined through microscopic measuring after these components were isolated by micro-dissection,then these data were analyzed statistically.Results:(1) Significant difference existed in these characteristic parameters among different bat species (One-way ANOVA).(2) Distribution range of L1/L2,S1/S2,L1/L2 were 1.81-2.03,15.15-23.21,1.40-1.54,and corresponding average values were 1.92,19.97,1.48,respectively.The ratio of S1/S2 showed the most significant fluctuation.(3) Each parameter pair among tympanic membrane,ossicular and cochlea showed significant positive correlation except L1 and W or S2 and W.(4) There was no significant correlation between length of external ear (L) and all the parameters of middle and inner ear.Conclusion:Reasonable matching between the auditory organs components of insectivorous bats laid the structural foundation for sensitive and effective ultrasound perception.
国家科技期刊平台
NSTL
万方数据
维普
