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Occurrence of a sport in melasoma (Lina) scripta and its behavior in heredityMcCracken, Mary Isabel. January 1907 (has links)
Thesis (Ph. D.)--Leland Stanford junior university, 1907. / Cover title. eContent provider-neutral record in process. Description based on print version record.
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The mode of inheritance of resistance to phosphine in two species of stored product beetlesAnsell, Mark Richard January 1992 (has links)
No description available.
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Morphological differences between three South African species of Evdes Dejean, 1833(Coleopptera: Buprestidae)MacFadyen, DN, Reilly, BK, Bellamy, CL, Eiselen, RJ January 2007 (has links)
The genus Evides Dejean, 1833 (Coleoptera: Buprestidae) belongs to the family of woodboring
beetles commonly known as jewel beetles. This comparative study was undertaken on
the morphological characteristics of three species from field specimens, private collections
and collections at the Transvaal Museum of Natural History. The genus Evides consists of
eleven species and one subspecies in total worldwide. Nine species and one subspecies are
endemic to Sub-Saharan Africa. One species is recorded from India and further species from
Laos and Vietnam: Bellamy (World Catalogue, in prep.) The objective of the study was to
quantify morphological differences between species representing the genus in South Africa.
Specimens of E. gambiensis (Laporte & Gory, 1835), E. interstitialis (Obenberger, 1924) and
E. pubiventris (Laporte & Gory, 1835) were collected in the Waterberg (Limpopo Province)
and additional specimens of E. pubiventris were collected at Ezemvelo Nature Reserve
(Gauteng Province). All three species are related, difficult to differentiate in the field and
occur on the same host plants, marula (Sclerocarya birrea (A. Rich.) Hochst.) and false
marula (Lannea discolor (Sonder) Engl.). Results indicate that there are morphological
differences and species can be differentiated according to elytra length, total elytron width,
eye size, frons length, frons width and abdomen length.
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Food habits and the feeding mechanism of the khapra beetle larva, Trogoderma granarium EvertsNoon, Zenas Barnard, 1934- January 1957 (has links)
No description available.
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Dispersal in carabidsNewell, Simon C. January 1986 (has links)
The study consisted primarily of a number of surveys in brassica fields, using pitfall and gutter traps. At all sites a number of different species of carabids were marked and released. From the pitfall trapping it was found that different carabid species inhabitated different parts of the field, particularly in relation to the field boundaries. Two common species, Nebria brevicollis and Bembidion lampros, over-wintered in the hedgebanks, moving out into the fields in the spring. Two other common species, Pterostichus melanarius and Harpalus rufipes, were primarily associated with the field, but activity in the field boundaries continued later into the year. Marking concentrated on four species; P. cupreus, P. melanarius, H. rufipes and N. brevicollis. At all sites the recapture rate of rufipes was much lower than that of P. melanarius, though they are of similar size. Using this data, mean displacement/day was calculated for each species. To identify the causes for the differences in recapture rate between the species, two species were individually tracked at night, in the field. Positions every two minutes were recorded and the distance and turn between each point measured. The results showed that H. rufipes had a higher turn rate and moved less than melanarius. The data from tracking was incorporated into a computer simulation model which recreated the beetles' tracks, using the same time interval. Traps were added and the model used to simulate the recapture experiments in the field. Changes in dispersal patterns were used to create differences in the catch in different patches. It was found that changes in turning behaviour could not produce changes in density, because of behaviour at the boundaries. Delaying the change in behaviour produces differences in numbers, but orientation is the most likely mechanism. The relationship between step length, turn and catch was also evaluated.
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Derivation of interspecific Solanum hybrid genotypes with resistance to Colorado potato beetle (Leptinotarsa decemlineata Say) /Wuosmaa, David Harrison, January 1994 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references. Also available via the Internet.
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Occurrence of a sport in melasoma (Lina) scripta and its behavior in heredityMcCracken, Mary Isabel. January 1907 (has links)
Thesis (Ph. D.)--Leland Stanford junior university, 1907. / Cover title. Also issued in print.
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The relation of water to the behavior of the potato beetle in a desert ...Breitenbecher, Joseph Kumler, January 1900 (has links)
Thesis (Ph. D.)--University of Chicago, 1913. / "Private edition, distributed by the University of Chicago libraries, Chicago, Illinois." "Reprinted from Publication 263 of the Carnegie institution of Washington." Bibliography: p. 382-384.
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Dynamics of aggregation formation in Japanese beetles, Popillia japonica /Kowles, Katelyn A., January 2009 (has links) (PDF)
Thesis (M.S.)--Eastern Illinois University, 2009. / Includes bibliographical references.
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Host plants of the tobacco flea beetle, Epitrix parvula F. /Glass, Edward H., January 1940 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute, 1940. / Abstract. Includes bibliographical references (leaf 65). Also available via the Internet.
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