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Biology and control of the carrot weevil Listronotus oregonensis (Leconte)Eshbaugh, Elbert Lee. January 1951 (has links)
Call number: LD2668 .T4 1951 E8 / Master of Science
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Life history evolution in the death-watch beetle Xestobium rufovillosum DeGeerMenendez, Guy Tremar January 1990 (has links)
No description available.
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The evolution of larval competition strategies in Callosobruchus maculatus and C. analisColegrave, Nicholas January 1995 (has links)
No description available.
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Observations on the resistance of grain weevils to certain fumigantsAbbott, Cyril E. January 1928 (has links)
Call number: LD2668 .T4 1928 A21
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Olfactory response of red flour beetles, Tribolium castaneum (Herbst), to various forms of wheat, millet and a fungus as determined by a light-sensitive apparatusSeifelnasr, Yousif E January 2011 (has links)
Typescript (photocopy). / Digitized by Kansas Correctional Industries
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The ecology of great diving beetles (Dytiscus spp.) in the Somerset levels and moorsSerjeant, Anthony Frederick January 2013 (has links)
Dytiscid beetles are significant predators in freshwater aquatic ecosystems, playing a major role in structuring macro-invertebrate communities in some habitats (Cobbaert et al 2010). Great Diving Beetles (Dytiscus spp.) can be among the top predators, yet more than one species may be present in a particular physical location, prompting questions regarding how the Dytiscus species co-exist. This study investigated Dytiscus marginalis Linneaus 1758 and the much rarer Dytiscus dimidiatus Bergsträsser 1778 which occur together in drainage ditch ecosystems in the Somerset Levels and Moors in the United Kingdom. Estimates of niche breadths were made in relation to seasonal activity patterns, habitat usage and prey in order to gauge the degree of specialisation displayed by the two species. Findings broadly supported the view that D. marginalis is more of a generalist species than D. dimidiatus, however, a considerable degree of niche overlap was shown to exist. Evidence was found of a stronger preference in D. dimidiatus for shaded watercourses and for sections of ditch with less extensive coverage of duckweed (Lemna spp.) in the early part of the season. There were indications of both inter-specific and intra-specific predation of larvae by adults and larvae of Dytiscus spp. A major challenge overcome during the study concerned how to distinguish the larvae of the two species. Molecular ecological techniques (RAPD, PCRs and gene sequencing) were compared with morphological means to determine species identity. A relatively simple molecular method was found to distinguish the species based on species-specific sequences within a short fragment of the mitochondrial cytochrome oxidase 1 (CO1) gene. This technique successfully identified 90% of 108 individual larvae tested whereas morphology-based analysis failed to resolve them. The implications for conservation practice arising from these observations are discussed in relation to D. dimidiatus, which is considered at risk in the UK.
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Parasites and predators of Dendroctonus ponderosae Hopkins (Coleoptera : Scolytidae) in ponderosa pine /Billings, Ronald Forrest. January 1970 (has links)
Thesis (M.S.)--Oregon State University, 1970. / Typescript. Mounted photographs. Includes bibliographical references (leaves 67-73). Also available on the World Wide Web.
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Carabid beetles (Coleoptera, Carabidae) in boreal managed forests : meso-scale ecological patterns in relation to modern forestry /Koivula, Matti. January 2001 (has links)
Thesis (doctoral)--University of Helsinki, 2001. / Includes bibliographical references.
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Revision of the genus Esthesopus in America north of Mexico (Coleoptera: Elateridae)Rhyand, Thomas Henry, 1950- January 1976 (has links)
No description available.
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The larval taxonomy of nine Arizona species of the genus Phyllophaga, subgenus PhyllophagaRosander, Reginald Wayne, 1942- January 1969 (has links)
No description available.
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