Memorial University DAI: The response of Culicidae to visual stimuli

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Document Description

Title	The response of Culicidae to visual stimuli
Author	Browne, Shelley Marie, 1957-
Description	Thesis (M.Sc.)--Memorial University of Newfoundland, 1979. Biology
Date	1979
Pagination	vii, 82 leaves : ill.
Subject	Mosquitoes; Visual discrimination
Degree	M.Sc.
Degree Grantor	Memorial University of Newfoundland. Dept. of Biology
Discipline	Biology
Language	Eng
Notes	Bibliography: leaves 75-80.
Abstract	Response of Culicidae to visual stjmuli of various colours and shapes was studied in the Tintamirre National Wildlife Area, New Brunswick, in 1977 and 1978. Culicidae were collected from three-dimensional, cube-shaped, funnel target traps of five different colours. The collections indicated a differential preference for the five colours. Aedines and Mansonia perturbans preferred black, red and blue as the most attractive colours, while yellow and white were consistently unattractive. M. perturbans showed substantial colour differentiation in the day and night time collections. The percent luminous reflectance of the light reflected from each colour-stimulus target was inversely proportional to the numbers of Culicidae trapped in the target (i.e. a decrease in the luminous reflectance, the more mosquitoes collected). This trend was fairly consistent throughout 1977 and 1978 but discrepancies did occur. - M. perturbans landed in greater numbers of filters transmitting wave-lengths of 480-600 nm and 400-480 nm. A secondary response occurred to 300-400 nm. Low numbers landed on 620 nm and all longer wavelengths. -- Four species of Aedes and M. perturbans were shown to respond in greater numbers to cube targets than pyramids while A. punctor was collected in greater numbers from pyramids. While no species were taken exclusively at any of the levels, most mosquitoes were collected in cube and pyramid targets exposed at the 122 and 183 cm levels. Aedines and M. perturbans differentially selected the end or projecting parts of the rectangular (oblong) targets. Few numbers were collected from the center portion. - Recommendations for further studies are discussed as well as suggested for the application of these findings for personal protection against mosquitoes.
Type	Text
Resource Type	Electronic thesis or dissertation
Format	Image/jpeg; Application/pdf
Source	Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
Local Identifier	75032218
Rights	The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
Collection	Electronic Theses and Dissertations
Scanning Status	Completed
PDF File	(15.72 MB) -- http://collections.mun.ca/PDFs/theses/Browne_ShelleyMarie.pdf
CONTENTdm file name	88267.cpd