Dissertation > Excellent graduate degree dissertation topics show

Seven kinds of bat echolocation behavior ecological research

Author: ChenMin
Tutor: FengJiang
School: Northeast Normal University
Course: Environmental Science
Keywords: Bat Echolocation Status Gender Age Body type Ecology
CLC: Q958
Type: Master's thesis
Year: 2003
Downloads: 181
Quote: 0
Read: Download Dissertation

Abstract


Bat echolocation research has been a the bat research focus on international and hotspots. Closely linked due to the acoustic characteristics and ecological behavior of bats, such as the main frequency of the sound waves affect the size of the bat can detect prey, the prey can be detected by the distance and prey detection and ability to avoid the bat, sonic structure impact The ability to detect prey bat in the interference environment to study the impact the bat sonic structure and characteristics of the factors to explore the mechanism of the bat acoustic detection and positioning, more in-depth understanding of the ecological behavior of bats. Echolocation issue and analytical processing is not only limited by the the acoustic emission organ and acoustic receivers organ structure, but also by the bat's size, age, state of the bat, the bat predation stage factors. In this thesis, Echolocation Echolocation detector (D980, ULTRASOUND DETECTOR, Pettersson Elektronik AB, Sweden) and a digital recorder (SONY, TCD-D8) recording, professional sound spectrum analysis software Batsound 3.10 (Pettersson Elektronik AB , Sweden) to analyze the recorded sound waves. With a vernier caliper, ruler and day equal measure the morphological characteristics of the bat. Professional statistical software SPSS11.5 for data processing and statistical analysis. Of Yunnan Rhinolophus Rhinolophus, big ears, Platts leaf-nosed bats, two-color Hipposideridae Echolocation analyze, describe its sonic character, is the first of these four kinds of bat echolocation reported, Yunnan Rhinolophus The bat is a unique bat, to its sonic described with Chinese characteristics, and to provide new data and information for the establishment of the International Bat Echolocation library. Morphological and acoustic Comparative Study on mother-to-child Yunnan Rhinolophus bat to explore changes in With Yunnan Rhinolophus growth and development of its morphology and echolocation, described maternal and child communication behavior and determine the exchange of his mother, the young Mainly as sound. Echolocation compared Yunnan Rhinolophus the Platts Hipposideridae flight status and suspension state, describe the the Doppler compensation effect of these two kinds of bats, the suspension status sonic frequency was significantly higher than the state of flight, the time interval of the acoustic pulse significantly longer than the flight status, the FM bandwidth is narrower than the flight status. Comparison and analysis of three species of bats (angle daisy head pieces, clover hoof web and nosed amplitude) morphology and echolocation sexual dimorphism, the results show the presence of bats form no significant sexual dimorphism echolocation sonic character obvious sexual dimorphism, may be due to the gregarious bats gender division of labor or for convenient communications, bats morphology and echolocation calls sexual dimorphism research carried out in the international small, this article on the rise of web gender The dimorphism comparison to fill the domestic blank, the the factory provision of the new areas for bats research.

Related Dissertations

  1. Tang Dynasty women 's status in marriage,K242
  2. Poor Scholars in the Tang Dynasty Mentality of,K242
  3. The construction of the television culture, ecology,G220
  4. Our Country Rural Public Policy of Mass Media Spread the Present Situation and Development of Countermeasures,D422.0
  5. The Research on Mixed-age Regional Activities Management of Kindergarten,G617
  6. Analysis of Gender Culture in Chinese Textbooks,G633.3
  7. The Impoverished Mountainous Area Middle School Carries Out the Sunlight Sports Present Situation Research and Countermeasure,G633.96
  8. Of Guangzhou City,Buddha Secondary School of Taekwondo to carry out the Survey Research,G886.9
  9. Encounter the Utopia : Ecological Marxism Difficult Position and Possible Outlet,X2
  10. Health-based and Ecological Risk Assessment of Contaminated Sites,X820.4
  11. Comparative Analysis of Growth, Digestive Enzyme Activities and Pearl-SAC Development Between Two Different Sized Pinctada Martensii during Pearl Culturing,S917.4
  12. A Study on the Relationship between the Spirituality and Self-Consistency of College Students,B844.2
  13. The Role of Media in the Rural Daily Life,D422.7
  14. Philosophical Thinking on College Students’ Ecological Civilization Viewpoint,G641
  15. Study on the Current Situation and Teaching Strategies of Xi’an College Students,G807.4
  16. The Direction of Our Football Situation Graduate Thesis and Development Strategies,G843
  17. Comparison of Parasitism Behaviors and Study on Interspecific Competition between Trichogramma Ostriniae and Trichogramma Dendrolimi,S476.3
  18. The Difference of Proteome Expression of Low Light Stress and Regular Light Recovery on Growth of Maize Seedling,S513
  19. On Happiness of Eco-socialism,B82-05
  20. A Study on the Relationship among Self-construal, Gender Roles and Social Anxiety of Middle School Students,B844.2
  21. Yunnan rural compulsory education funds guarantee mechanism to the status of implementation of,G522.3

CLC: > Biological Sciences > Zoology > Animal ecology and zoogeography
© 2012 www.DissertationTopic.Net  Mobile