Digital Archives Initiative
Memorial University - Electronic Theses and Dissertations 2
menu off  add document to favorites : add page to favorites : reference url back to results : previous : next
 Search this object:
 0 hit(s) :: previous hit : next hit
  previous page : next page
Document Description
TitleThe response of Culicidae to visual stimuli
AuthorBrowne, Shelley Marie, 1957-
DescriptionThesis (M.Sc.)--Memorial University of Newfoundland, 1979. Biology
Paginationvii, 82 leaves : ill.
SubjectMosquitoes; Visual discrimination
Degree GrantorMemorial University of Newfoundland. Dept. of Biology
NotesBibliography: leaves 75-80.
AbstractResponse 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.
Resource TypeElectronic thesis or dissertation
FormatImage/jpeg; Application/pdf
SourcePaper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
Local Identifier75032218
RightsThe 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.
CollectionElectronic Theses and Dissertations
Scanning StatusCompleted
PDF File(15.72 MB) --
CONTENTdm file name88267.cpd