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Found 3 essays matching the above criteria.

1. 1. Nektarresurser för parasitsteklar på vecklare i svensk äppelodling

   University essay from SLU/Dept. of Plant Protection Biology

   Author : Susanna Waara; [2011]
   Keywords : parasitsteklar; äppelodling; habitatmanipulering; vecklare; äpple;

   Abstract : Syftet med den här litteraturstudien är att identifiera vilka blommande växter som skulle kunna fungera som nektarresurser i svenska äppelodlingar och därmed kunna gynna naturliga fiender på vecklare. Vecklare orsakar stora problem i äppleodlingar runt om i världen. READ MORE

3. 2. Importance of temperature for the willow bodyguard Perilitus brevicollis

   University essay from SLU/Dept. of Ecology

   Author : Kwabena Baffoe; [2011]
   Keywords : temperature; development rate; body size; development time; Braconidae; Perilitus brevicolis; Phratora vulgatissima; host-parasitoid interactions; bodyguard; biological control; Salix;

   Abstract : The influence of temperature on the performance of the willow bodyguard, Perilitus brevicollis Haliday, 1835 (Hymenoptera: Braconidae) as well as the impact of temperature and parasitism on its host feeding capacity were assessed. The study also aimed at identifying the similarities and differences among two populations (Swedish and Irish) with regards to parasitoid diversity, size and parasitism rate. READ MORE

4. 3. Parasitering på en expanderande art : har kartfjärilen undkommit sina naturliga fiender?

   University essay from SLU/Dept. of Ecology

   Author : Cecilia Söderlind; [2009]
   Keywords : kartfjäril; parasitoid; flykt från naturliga fiender;

   Abstract : Warmer climate is a driving factor to species expansion northwards. Expansion to new areas can result in escape from natural enemies, resulting in reduced levels of mortality and thereby potentially increasing the rate of expansion. READ MORE