The influence of temperature and photoperiod on ovarian development in Culex tarsalis and Culiseta inornata (Diptera: Culicidae) in southern Manitoba

Simple item page
dc.contributor.authorMackay, Andrew Jamesen_US
dc.date.accessioned2012-06-01T19:04:12Z
dc.date.available2012-06-01T19:04:12Z
dc.date.issued1996en_US
dc.degree.disciplineEntomologyen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractOvarian follicle development in Cx. tarsalis Coquillett, and ovarian follicle development and blood meal utilization in Cs. inornata (Williston), were examined under laboratory and field conditions. In the laboratory, photoperiod (L:D 18:6, 14:10 and 12:12) had a significant influence on the number of Cx. tarsalis entering diapause at two temperatures (19oC and 22oC). Temperature did not have an influence on the proportion of Cx. tarsalis in diapause at 18:6 or 12:12 (L:D). In 1992, Cx. tarsalis emerging under natural conditions did not begin to enter diapause until after the middle of August. At two temperatures (16oC and 19oC), Cs. inornata reared in the laboratory entered diapause at 14:10 and 12:12 (L:D), but many females terminated diapause within 34 days after emergence. ln 1993, Cs. inornata emerging under natural conditions in late August were in diapause, and maintained diapause for at least eighteen days. Females emerging in a state of reproductive diapause do not seek a blood meal, and therefore would not vector a pathogen such as Western Equine Encephalomyelitis virus (WEEV). Should another outbreak of WEEV occur in southern Manitoba, the ability to predict the seasonal timing of diapause induction in Cx. tarsalis would be an important factor in evaluating the transmission potential of a pathogen to new hosts.en_US
dc.format.extentx, 125 leaves :en_US
dc.identifier(Sirsi) AJM-5905en_US
dc.identifier.urihttp://hdl.handle.net/1993/7386
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.titleThe influence of temperature and photoperiod on ovarian development in Culex tarsalis and Culiseta inornata (Diptera: Culicidae) in southern Manitobaen_US
dc.typemaster thesisen_US
local.subject.manitobayesen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Mackay_The_influence.pdf
Size:
5.92 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
FGS - Electronic Theses and Practica
Manitoba Heritage Theses