Essays about: "Lepidoptera"

Showing result 16 - 20 of 27 essays containing the word Lepidoptera.

1. 16. Feeding preferences and foraging in Larvae of Manduca sexta and Spodoptera littoralis : a laboratory study based on olfaction

   University essay from SLU/Dept. of Biosystems and Technology (from 130101)

   Author : Elin Nyström; [2013]
   Keywords : Manduca sexta; Spodoptera littoralis; larvae; foraging; olfaction; larval dual choice test; induced feeding preference;

   Abstract : Larvae of Lepidopteran Manduca sexta and Spodoptera littoralis are pests of economical importance in several horticultural and agricultural crops. Knowledge of insect feeding preferences and behavior is crucial in order to find economically and ecologically sustainable solutions to the problems caused by these herbivores. READ MORE

3. 17. Insekter i hårt törskateangripna ungtallbestånd i Norrbotten : skadeinventering och artbestämning

   University essay from SLU/Dept. of Forest Ecology and Management

   Author : Andreas Engström; [2012]
   Keywords : Törskate; Cronartium flaccidum; Peridermium pini; tall; Pinus sylvestris; insekter; mott; Dioryctria spp.; allmän tallbarkvecklare; Cydia coniferana; Cronartium rust; Scots pine; insects; moths; Cydia coniferana;

   Abstract : Sedan i början av 2000-talet har nordligaste Sverige drabbats hårt av törskateangrepp och det är konstaterat att skadorna framförallt har orsakats av den värdväxlande varianten C. flaccidum. READ MORE

4. 18. Induced plant volatiles and their effect onSpodoptera littoralis choice of host plant : oviposition on damaged or undamaged cotton or maize

   University essay from SLU/Dept. of Plant Protection Biology

   Author : Thomas Svensson; [2012]
   Keywords : Induced plant volatiles; Spodoptera littoralis; oviposition; cotton; maize; induced defence;

   Abstract : Insects are the main pests of many crops despite many different control measures. There is a need for a better understanding of the factors that affect the relationship between insects and plants. It is important to investigate how insects find and choose their host plants. READ MORE

5. 19. The effect of non-host plant volatiles on the reproductive behaviour of the Egyptian cotton leafworm, Spodoptera littoralis

   University essay from SLU/Dept. of People and Society

   Author : Altaf Hussain; [2012]
   Keywords : Adhatoda vasica; electrophysiology; Justicia adhatoda; Lepidoptera; Noctuidae; non-host plants; reproductive behaviour; semiochemical diversity; socioeconomics; Spodoptera littoralis; spruce;

   Abstract : Spodoptera littoralis is a major pest of cotton in Egypt, causing serious economic losses. Egyptian farmers highly appreciate biological control of the pest as synthetic pesticides are very unsustainable. Phytophagous insects rely on plant volatiles to locate oviposition, feeding and, mating sites. We tested newly emerged S. READ MORE

6. 20. Effect of patch heterogeneity on oviposition in two lepidopteran Brassica pests

   University essay from SLU/Dept. of Ecology

   Author : Tove Maria Nilsson; [2011]
   Keywords : Pieris brassicae; Plutella xylostella; Brassica oleracea; oviposition; host plant; egg distribution; patch heterogeneity;

   Abstract : The plant family of Brassicaceae is widespread around the world and many members of the family are important food and oil-seed crops. There are many insect pests specialized on brassicaceous crops and interactions between crop and pest are well studied. READ MORE