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Analysis and Recognition of Behavioral Response of Selected Insects in Toxic Chemicals for Water Quality Monitoring

수질 모니터링을 위한 유해 물질 유입에 따른 생물체의 행동 반응 분석 및 인식

  • 김철기 (부산대학교 대학원 전자계산학과) ;
  • 차의영 (부산대학교 전자계산학과)
  • Published : 2002.10.01

Abstract

In this paper, Using an automatic tracking system, behavior of an aquatic insect, Chironomus sp. (Chironomidae), was observed in semi-natural conditions in response to sub-lethal treament of a carbamate insecticide, carbofuran. The fourth instar larvae were placed in an observation cage $(6cm\times{7cm}\times{2.5cm)}$ at temperature of $18^\circ{C}$ and the light condition of 10 time (light) : 14 time (dark). The tracking system was devised to detect the instant, partial movement of the insect body. Individual movement was traced after the treatment of carbofuran (0.1ppm) for four days 2days : before treatment, 2 days : after treatment). Along with the other irregular behaviors, "ventilation activity", appearing as a shape of "compressed zig-zag", was more frequently observed after the treatment of the insecticide. The activity of the test individuals was also generally depressed after the chemical treatment. In order to detect behavioral changes of the treated specimens, wavelet analysis was implemented to characterize different movement patterns. The extracted parameters based on Discrete Wavelet Transforms (DWT) were subsequently provided to artificial neural networks to be trained to represent different patterns of the movement tracks before and after treatments of the insecticide. This combined model of wavelets and artificial neural networks was able to point out the occurrence of characteristic movement patterns, and could be an alternative tool for automatically detecting presences of toxic chemicals for water quality monitoring. quality monitoring.

본 논문에서는 자동 추적 시스템을 이용하여 카바메이트 계열의 농약인 카보퓨란의 치명적인 투여에 대하여 반자연적인 조건에서 반응하는 깔따구의 움직임을 관찰하였다. 4령기에 있는 깔따구를 $6cm\times{7cm}\times{2.5cm}$ 크기의 서식 장소와 $18^\circ{C}$의 수온, 명기와 암기를 각각 10시간, 14시간의 조건에서 관찰을 하였다. 추적 시스템은 깔따구 몸체의 부분 점들을 탐지하여 추적하도록 하였다. 모든 실험은 반자연적인(semi-natural) 상태에서 진행되었으며 약제 카보퓨란(Carbofuran 0.1mg/l) 처리 전 후 이틀씩 모두 4일에 걸쳐서 연속적으로 진행되었다. 실험 결과 약제의 처리후에 압축된 지그제그 형태로 나타나는 "떨림 현상"과 같은 비정규적인 행동들이 종종 나타남을 알 수 있었다. 약제 처리된 종들의 행동 변화를 탐지하기 위하여, 웨이블릿 분석이 다른 움직임 패턴들을 특징화하기 위하여 사용되었다. 이산 웨이블릿에 기반하여 추출된 파라미터들은 약제처리 전후의 움직임에 대한 다른 유형의 패턴들을 표현하기 위하여 인공 신경망을 통하여 학습되었다. 이러한 웨이블릿과 인공 신경망의 통합 모델은 특징화된 움직임 패턴들의 발생 시점을 탐지할 수 있었으며, 수질 모니터링을 위한 독성 물질의 유입을 자동으로 탐지할 수 있는 도구로써 사용될 수 있음을 알 수 있었다.을 알 수 있었다.

Keywords

References

  1. Lemly, A. D., Smith, R. J., A 'behavioral assay for assessing effects of pollutants of fish chemoreception,' Ecotoxicology and Environmental Safety 11(2), pp.210-218, 1986 https://doi.org/10.1016/0147-6513(86)90065-5
  2. Dutta, H., Marcelino, J., Richmonds, Ch., 'Brain acetylcholinesterase activity and optomotor behavior in bluegills, Lepomis macrochirus exposed to different concentrations of diazinon,' Arch. Intern. Physiol. Biochim. Biophys., 100(5), pp.331-334, 1992 https://doi.org/10.3109/13813459209000721
  3. Alt, W., Hoffman, G., 'Biological Motion,' Lecture notes in Biomathematics. Springer-Verlag, Berlin, 1989
  4. Tourtellot, M. K., Collins, R. D., Bell, W. J., 'The problem of movelength and turn definition in analysis of orientation data,' Journal of Theoretical Biology 150, pp.287-297,1991 https://doi.org/10.1016/S0022-5193(05)80428-X
  5. Tchernichovski, 0., Benjamini, Y., 'The dynamics of long-term exploration in the rat Part II. An analytical model of the kinematic structure of rat exploratory behavior,' Biological Cybernetics 78, pp.433-440, 1998 https://doi.org/10.1007/s004220050447
  6. Lippmann, R. P., 'An Introduction to Computing with Neural Nets,' IEEE ASSP Magazine, pp.4-22, April, 1987 https://doi.org/10.1109/MASSP.1987.1165575
  7. Zurada, J. M, Introduction to Artificial Neural Systems, West Publishing Company, New York, 1992
  8. Inn-sil Kwak, Tae-Soo Chon, Hyun-Min Kang, Nam-il Chung, Jong-Sang Kim, Sung Cheol Koh, Sung-Kyu Lee and Yoo-Shin Kim, 'Monitoring the Movement Tracks of Medaka (Oryzias latipes) in Response to Sub-Lethal Treatments of an Insecticide by Using Artificial Neural Networks,' Journal of Environmental Pollution (in press), 2002
  9. Rumelhart, D. E., Hinton, G. E., Williams, R. J., 'Learning internal representations by error propagation, in Parallel distributed processing : explorations in the microstructure of cognition,' In : Rumelhart, D. E., McClelland, J. L.(Eds.), MIT Press, Cambridge MA. pp.318-362, 1986
  10. Michael Chester, Neural Networks : A Tutorial, PTR Prentice Hall, 1993
  11. Tomas Clemen, 'The use of scale information for integrating simulation models into environmental information systems,' Journal of Ecological Modeling 108, pp.107-113, 1998 https://doi.org/10.1016/S0304-3800(98)00022-2
  12. C. Sidney Burrus, Ramesh A. Gopinath, and Haitao Guo, Introduction to Wavelets and Wavelet Transforms, Prentice-Hall International, Inc., 1998
  13. Gilbert Strang, Truong Nguyen, Wavelets and Filter Banks, Wellesley-Cambridge Press, 1996
  14. Yves Meyer, Wavelets : algorithms and applications, Siam, 1993
  15. R. D. Collins, R. N. Gargesh, A. D. Maltby, R. J. Roggero, M. K. Tourtellot and W. J. Bell, 'Innate control of local search behaviour in the house fly, Musca domestica,' Journal of Physiological Entomology, Vol.19, pp.165-172, 1994 https://doi.org/10.1111/j.1365-3032.1994.tb01039.x