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Found 3 essays matching the above criteria.
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1. Wing Shape Variation In A Damselfly: Effects Of Range Margins And Latitude
University essay from Uppsala universitet/Institutionen för biologisk grundutbildningAbstract : An optimal wing shape is necessary for the survival of winged insects since it enables different survival strategies and is expected to vary between environments due to different selection pressures. However, few studies have explored wing shape variation across the whole range of a species. READ MORE
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2. Time Constraint and Genetic (Phenotypic) Variation in Wing Shape in a Damselfly Along a Latitudinal Gradient
University essay from Uppsala universitet/Institutionen för biologisk grundutbildningAbstract : This degree project examined the effect of time constraint on wing shape and phenotypic variation in wing shape along a latitudinal gradient in the damselfly species Lestes sponsa. Fore and hind wings from individuals originating from three different latitudes: North (66°N), Central (59°N) and South (54°N) Europe were treated with their native temperature and photoperiod. READ MORE
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3. Correlation between photoperiod and development rate in the damselfly Lestes sponsa (Hansemann) : A compensating mechanism across latitudes?
University essay from Institutionen för ekologi, miljö och geovetenskapAbstract : Although there is much theoretical and empirical data about the life history responses of time constrained organisms, little is known about the latitude compensating mechanism that enables northern populations’ developmental rates to compensate for latitude. To investigate the importance of photoperiod on development and growth, I collected adults and raised the offspring of the obligatory univoltine damselfly Lestes sponsa from two populations at different latitudes (53º N and 63º N). READ MORE
