Hourglass and rhythmic components of photoperiodic time measurement in the pitcher plant mosquito, Wyeomyia smithii

Oecologia ◽  
1998 ◽  
Vol 117 (4) ◽  
pp. 486-495 ◽  
Author(s):  
W. E. Bradshaw ◽  
C. M. Holzapfel ◽  
T. E. Davison
Keyword(s):  
Time Measurement ◽  
Pitcher Plant ◽  
Wyeomyia Smithii

scholarly journals Evolution of photoperiodic time measurement is independent of the circadian clock in the pitcher-plant mosquito, Wyeomyia smithii

2009 ◽  
Vol 195 (4) ◽  
pp. 385-391 ◽  
Author(s):  
Kevin J. Emerson ◽  
Sabrina J. Dake ◽  
William E. Bradshaw ◽  
Christina M. Holzapfel
Keyword(s):  
Circadian Clock ◽  
Time Measurement ◽  
Pitcher Plant ◽  
Wyeomyia Smithii

Rhythmic components of photoperiodic time measurement in the pitcher-plant mosquito, Wyeomyia smithii

Oecologia ◽  
1997 ◽  
Vol 110 (1) ◽  
pp. 32-39 ◽  
Author(s):  
M. C. Wegis ◽  
W. E. Bradshaw ◽  
T. E. Davison ◽  
C. M. Holzapfel
Keyword(s):  
Time Measurement ◽  
Pitcher Plant ◽  
Wyeomyia Smithii

scholarly journals Epistasis Underlying a Fitness Trait Within a Natural Population of the Pitcher-Plant Mosquito, Wyeomyia smithii

Genetics ◽  
2004 ◽  
Vol 169 (1) ◽  
pp. 485-488 ◽  
Author(s):  
William E. Bradshaw ◽  
Brian P. Haggerty ◽  
Christina M. Holzapfel
Keyword(s):  
Natural Population ◽  
Pitcher Plant ◽  
Wyeomyia Smithii ◽  
Fitness Trait

EFFECTS OF FENITROTHION INSECTICIDE ON INHABITANTS OF LEAVES OF THE PITCHER PLANT, SARRACENIA PURPUREA L.

1987 ◽  
Vol 119 (7-8) ◽  
pp. 647-652 ◽  
Author(s):  
W.L. Fairchild ◽  
D.C. Eidt ◽  
C.A.A. Weaver
Keyword(s):  
Sarracenia Purpurea ◽  
Pitcher Plants ◽  
Pitcher Plant ◽  
Wyeomyia Smithii ◽  
Metriocnemus Knabi

AbstractBy injecting fenitrothion into fluid in leaves of pitcher plants, Sarracenia purpurea L., it was determined that the mosquito, Wyeomyia smithii (Coquillett), and the midge, Metriocnemus knabi (Coquillett), are under some risk from fenitrothion forest sprays at the rate of 210 g AI/ha. Wyeomyia smithii is slightly more susceptible than is M. knabi. Other leaf inhabitants, mites and rotifers, were not affected by initial concentrations of fenitrothion in the fluid (up to 9.6 μg/L) that did affect the mosquito and the midge.

FITNESS CONSEQUENCES OF HIBERNAL DIAPAUSE IN THE PITCHER-PLANT MOSQUITO,WYEOMYIA SMITHII

Ecology ◽  
1998 ◽  
Vol 79 (4) ◽  
pp. 1458-1462 ◽  
Author(s):  
W. E. Bradshaw ◽  
P. A. Armbruster ◽  
C. M. Holzapfel
Keyword(s):  
Pitcher Plant ◽  
Wyeomyia Smithii ◽  
Fitness Consequences

Photoperiodic control of development in the pitcher-plant mosquito, Wyeomyia smithii

1972 ◽  
Vol 50 (6) ◽  
pp. 713-719 ◽  
Author(s):  
William E. Bradshaw ◽  
L. Philip Lounibos
Keyword(s):  
Larval Instar ◽  
Pitcher Plant ◽  
Photoperiodic Control ◽  
Wyeomyia Smithii ◽  
Diapause Termination ◽  
Environmental Consequences ◽  
The Third ◽  
Short Day ◽  
Critical Daylength ◽  
Short Days

Wyeomyia smithii diapause in the third larval instar. Long days avert or terminate and short days promote or maintain diapause. Diapause occurs early in the third instar and may be terminated by photoperiodic stimuli without the intervention of chilling or other factors. Fifty percent termination of diapause requires about 3 long days and another [Formula: see text] days are consumed in the third instar for postdiapause development. The critical daylength is identical for both the initiation and termination of diapause, 14.75 h of light per day. But, the photoperiodic clock monitoring diapause decisions is several times as accurate during initiation as in termination, reflecting the more drastic environmental consequences of development misdirection in the fall than in the spring. This accuracy is further enhanced by a prolongation of the second instar under short-day conditions. The doubling in the duration of the second instar exhibits the same critical daylength properties as diapause determination.The third instar is divisible into four distinct developmental periods: prediapause, diapause, termination of diapause, and postdiapause. Methods for quantifying these periods are presented. Similar manipulations could be employed for other diapausing arthropods, regardless of the stage at which dormancy occurs or the cues used in its regulation.

Reproductive value in a complex life cycle: heat tolerance of the pitcher-plant mosquito, Wyeomyia smithii

2005 ◽  
Vol 18 (1) ◽  
pp. 101-105 ◽  
Author(s):  
P. A. Zani ◽  
L. W. Cohnstaedt ◽  
D. Corbin ◽  
W. E. Bradshaw ◽  
C. M. Holzapfel
Keyword(s):  
Life Cycle ◽  
Heat Tolerance ◽  
Complex Life Cycle ◽  
Reproductive Value ◽  
Pitcher Plant ◽  
Wyeomyia Smithii

scholarly journals EVOLUTION OF THE GENETIC ARCHITECTURE UNDERLYING FITNESS IN THE PITCHER-PLANT MOSQUITO,WYEOMYIA SMITHII

Evolution ◽  
1997 ◽  
Vol 51 (2) ◽  
pp. 451-458 ◽  
Author(s):  
Peter Armbruster ◽  
William E. Bradshaw ◽  
Christina M. Holzapfel
Keyword(s):  
Genetic Architecture ◽  
Pitcher Plant ◽  
Wyeomyia Smithii
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