- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 261 to 270 of 1661 (0.011 seconds)| 261 |
The management of arable field margins to enhance natural populations of beneficial arthropodsHarwood, Robert William John January 1994 (has links)
No description available.
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| 262 |
The lethal and sub-lethal effects of lambda-cyalothrin to the syrphid Episyrphus balteatus (Degeer) (Diptera: Syrphidae)Moyle, Justine Louise January 1994 (has links)
No description available.
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| 263 |
Proctolin receptors in the gut of the locust Schistocerca gregariaGray, Alexander S. January 1995 (has links)
No description available.
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| 264 |
Studies on the cuticle of the human body louse, Pediculus humanus humanusLovell, Geoffrey Alan January 1982 (has links)
No description available.
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| 265 |
Effects of azadirachtin on protein synthesis in specific tissues of the desert locust Schistocerca gregariaIqbal, Shagufta January 1999 (has links)
No description available.
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| 266 |
Host exploitation in ScolytidaeStorer, Andrew John January 1993 (has links)
No description available.
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| 267 |
The diversity of Coleoptera assemblages in different habitat types in Sabah, Malaysia, with special reference to herbivoryChung, Arthur Y. C. January 1999 (has links)
No description available.
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| 268 |
Studies on the antihaemostatic repertoire of the bloodsucking fly, Stomoxys calcitransJenkin, Philip January 2001 (has links)
No description available.
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| 269 |
The potential role of biotic mechanisms in baculovirus dispersalBrown, Caroline Mary January 1986 (has links)
The role of biotic mechanisms in baculovirus (BV) dispersal was investigated using three Lepidopteran pests; Plodia interpunctella (Hubner), Ephestia cautella Walker and Mamestra brassicae L. and their respective BVs. The first two, pyralid moths, are pests of stored products, and the third is a pest of brassicas. Detailed host biology and virus mortality studies were undertaken to provide background information for the main investigation of virus dispersal using P.interpunctella. BV infectionincreased larval activity and thus BV dispersal in all three species until the disease at an advanced stage caused sluggish behaviour and mortality. However, larva to larva virus transmission was limited, especially as the integuments of diseased pylarids did not rupture and cannibalism was rare when a suitable food supply was available. P.interpunctella adults which received a sub-lethal BV dose in the larval stages appeared normal but the proportion of eggs oviposited, the viability of the eggs and the survival of the progeny were reduced. However, no BV was detected in the adult stage. Transovum transmission occurred if the adults were externally contaminated with BV. Scavangers, predators and adult parasitoids which fed on diseased prey voided viable BV in their faeces. This contaminated the larval medium and resulted in larval infection. The predators tested readily fed on diseased prey but the parasitoids were less able to compete with BV for hosts, Bracon hebetor Say preferentially avoided diseased hosts. There was little evidence to indicate that BV can be mechanically vectored between host larvae on the ovipositor of a parasitoid or the mouthparts of a predator. The relative potential of the host and other biotic mechanisms to cause BV dispersal is discussed.
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| 270 |
Characterization of a nuclear polyhedrosis virus of the variegated cutworm, Peridroma saucia (Hubner) (Lepidoptera:Noctuidae)Wilson, Marijo Ella, 1954- January 2011 (has links)
Vita. / Digitized by Kansas Correctional Industries
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