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Dissertations / Theses on the topic 'Insect population distribution'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Gaston, K. J. "Patterns in the dynamics and distribution of insect populations." Thesis, University of York, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235013.

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2

Sara, Stacey A. "The spatial distribution of Japanese beetles, Popillia japonica, in soybean fields /." View online, 2010. http://repository.eiu.edu/theses/docs/32211131575445.pdf.

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3

Morton, A. C. G. "The population biology of an insect with a restricted distribution : Cupido minimus Fuessly (Lepidoptera: Lycaenidae)." Thesis, University of Southampton, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355653.

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4

Hannunen, Salla. "Trivial movements and redistribution of polyphagous insect herbivores in heterogeneous vegetation /." Uppsala : Swedish Univ. of Agricultural Sciences, Dept. of Entomology, 2003. http://epsilon.slu.se/a376.pdf.

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5

Higgins, Charlene J. "Spatial distribution and reproductive biology of western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera : Thripidae)." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/29873.

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Western flower thrips (WFT), Frankliniella occidentalis (Pergande), are haplodiploids. Virgin females produce sons parthenogenetically but must be mated to produce daughters. As a result, primary and secondary (adult) sex ratios can diverge from the 1:1 ratio commonly observed in diploid systems. Field studies were conducted to examine the spatial distribution of WFT on two greenhouse crops, Bell peppers, Capsicum annuum (Linn.) and Long English cucumbers, Cucumis sativus (Linn.) to determine if there was a correlation between sex ratio and density. Leaf and flower samples were taken weekly. A

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6

Burban, Christian. "Structuration des populations chez un insecte polyphage : "Bemisia tabaci" (Genn.) (Homoptera - Aleyrodidae)." Montpellier 2, 1991. http://www.theses.fr/1991MON20211.

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Bemisia tabaci (genn. ) (homoptera: aleyrodidae) est un insecte ravageur et vecteur de nombreuses maladies virales de plantes, repandu dans les zones tropicales et subtropicales de tous les continents. Cette etude, realisee en cote d'ivoire, s'interesse a la structuration des populations de b. Tabaci en fonction des plantes hotes. Les plantes hotes de b. Tabaci sont recensees et leur importance est evaluee en relation avec le nombre d'insectes qui s'y developpe. L'organisation des populations de b. Tabaci est etudiee par des experiences de transferts d'hotes en conditions controlees et par la

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7

Palumbo, John, Clayton Jr Mullis, Francisco Reyes, Andreas Amaya, Luis Ledesma, and Lisa Cary. "Population Dynamics and Distribution of Aphid Species on Head Lettuce in the Yuma Valley." College of Agriculture, University of Arizona (Tucson, AZ), 2000. http://hdl.handle.net/10150/220015.

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Studies were conducted in the 1999/2000 growing season to examine the population dynamics and field distribution of aphid species on winter and spring head lettuce crops. Seven, 0.25 acre planting of head lettuce were established beginning in October with final harvest occurring in April. Plant samples were conducted weekly to estimate the numbers of both alate (winged) and apterous (wingless) green peach aphids, potato aphids, cowpea aphids and lettuce aphids. Lettuce aphids were more abundant this spring than anticipated, which may indicate that lettuce aphid may be a new pest for Yuma growe

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8

Chapkowski, Andrew J. "Geographical distribution of pediobius foveolatus in New Jersey soybean fields to control the Mexican bean beetle population." Diss., Maryville, Mo. : Northwest Missouri State University, 2008. http://www.nwmissouri.edu/library/theses/ChapkowskiAndrew/index.htm.

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Thesis (M.S.)--Northwest Missouri State University, 2008.<br>The full text of the thesis is included in the pdf file. Title from title screen of full text.pdf file (viewed on July 25, 2008) Includes bibliographical references.

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9

Semeao, Altair Arlindo. "Spatial distribution, dispersal behavior and population structure of Tribolium castaneum herbst (Coleoptera: tenebrionidae)." Diss., Kansas State University, 2011. http://hdl.handle.net/2097/7135.

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Doctor of Philosophy<br>Department of Entomology<br>James F. Campbell<br>Phillip E. Sloderbeck<br>Robert "Jeff" J. Whitworth<br>Knowledge of factors influencing the establishment, persistence and distribution of stored-product pests aids the development of effective Integrated Pest Management (IPM) programs in food storage and processing facilities. This research focused primarily on Tribolium castaneum, which is one of the most important pests of mills. Populations of T. castaneum from different food facilities can potentially be interconnected by either their own dispersal behavior or by h

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10

Ribodeau, Michel. "Structuration génétique et spatiale des populations de Bruchus affinis, Frölich (Coleoptera Bruchidae), insecte inféodé à une légumineuse à distribution morcelée, Lathyrus sylvestris L." Pau, 1995. http://www.theses.fr/1995PAUU3014.

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Bruchus affinis Frolich (coleoptera bruchidae) est un coléoptère seminivore univoltin dont les larves se développent au détriment des graines en croissance de trois espèces de légumineuses à distribution morcelée, Lathyrus sylvestris, L. Latifolius et L. Tuberosus. Dès leur émergence les adultes quittent les stations de la plante hôte et gagnent des sites d'hivernation pour une période de diapause reproductive. La reproduction a lieu après le retour des insectes sur les stations de la plante hôte à partir du mois de juin. Une espèce non hôte (elle ne permet pas le développement larvaire), L. P

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11

Hoffsten, Per-Ola. "Rarity in boreal stream insects : patterns, causes and consequences /." Doctoral thesis, Umeå University, Ecology and Environmental Science, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-142.

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<p>Patterns of site occupancy among boreal stream insects were studied in central Sweden with focus on sparsely distributed species and the role of dispersal and niche limitations.</p><p>In the study of dispersal limitation, I found that effects of an extraordinarily harsh winter in small to medium-sized streams were strongest in sites located in small streams and far from lake outlets. Species richness and the total abundance of macroinvertebrates and trout returned to pre-disturbance levels after three years. However, some species showed slow recolonization and the proportion of holoaquatic

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12

Guenda, Wendengoudi. "Etude faunistique, écologique et de la distribution des insectes d'un réseau hydrographique de l'ouest africain : le Mouhoun (Burkina Faso) : rapport avec Simulium damnosum Théobald, vecteur de l'onchocercose." Aix-Marseille 3, 1996. http://www.theses.fr/1996AIX30053.

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Le present travail concerne l'etude hydrobiologique du mouhoun, sur un transect long de mille kilometres environ depuis la source jusqu'au cours inferieur, au burkina faso. Apres la description des biotopes prospectes, les facteurs physico-chimiques sont analyses. Le peuplement benthique est etudie dans 11 stations avec une analyse de la biologie et de l'ecologie des taxons recoltes. Une mention speciale est faite des simuliidae en raison de leur impact sur la sante de l'homme. Une cle simplifiee de determination des nymphes du genre simulium latreille en afrique de l'ouest est proposee. Une a

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13

Ottati, Angelo Luiz Tadeu [UNESP]. "Aspectos bioecológicos do pulgão-gigante-do-pinus, Cinara atlantica (Wilson, 1919) (Hemiptera: Aphididae), em Pinus spp. (Pinaceae)." Universidade Estadual Paulista (UNESP), 2004. http://hdl.handle.net/11449/105428.

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Made available in DSpace on 2014-06-11T19:35:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2004-02-17Bitstream added on 2014-06-13T18:45:55Z : No. of bitstreams: 1 ottati_alt_dr_botfca.pdf: 651467 bytes, checksum: a1b92614d7fbcfa2a73dbf3cf0eb427b (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Universidade Estadual Paulista (UNESP)<br>Empresa Privada<br>Os afídeos são um dos grupos de pragas amplamente distribuídos, causando perdas consideráveis em sistemas agrícolas e florestais. O pulgão-gigante-do-pinus, Cinara atlantica, é atualmente a espécie de pu

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14

Ally, Hadija Mussa. "Genetic diversity and structure of the superabundant whitefly populations, vectors of viruses causing diseases of cassava in three East African countries (Malawi, Tanzania, and Uganda)." Thesis, La Réunion, 2019. http://www.theses.fr/2019LARE0012.

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Des pullulations d’aleurodes du complexe d'espèces cryptiques de Bemisia tabaci ont été associées à la propagation de deux maladies frappant le manioc en Afrique orientale: la maladie de la mosaïque du manioc (CMD) et, plus récemment (2000), la maladie de la striure brune du manioc (CBSD). Parmi les espèces d’aleurodes de ce complexe, l’espèce SSA2 a été associée à la première épidémie de CMD au cours des années 1990 en Ouganda. Cependant, SSA2 aurait été remplacée par SSA1 dans les années 2000, provoquant une recrudescence de CMD et de CBSD, participant à leur propagation dans plusieurs pays

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15

Ottati, Angelo Luiz Tadeu. "Aspectos bioecológicos do pulgão-gigante-do-pinus, Cinara atlantica (Wilson, 1919) (Hemiptera: Aphididae), em Pinus spp. (Pinaceae)/." Botucatu : [s.n.], 2004. http://hdl.handle.net/11449/105428.

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Orientador: Carlos Frederico Wilcken<br>Banca: Carlos Alberto Hector Flechtmann<br>Banca: Célia Regina Lopes Zimback<br>Banca: Sonia Maria Noemberg Lazzari<br>Banca: Carlos Alberto Fleichmann<br>Banca: Edson Tadeu Iede<br>Resumo: Os afídeos são um dos grupos de pragas amplamente distribuídos, causando perdas consideráveis em sistemas agrícolas e florestais. O pulgão-gigante-do-pinus, Cinara atlantica, é atualmente a espécie de pulgão mais disseminada nos plantios de Pinus no Brasil. Devido à sua importância econômica, esse trabalho objetivou avaliar o efeito de diferentes temperaturas e da esp

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16

Buisson, Juliette. "Hydrobiologie du massif du Vercors (Préalpes calcaires) et d'une rivière type : le Furon : Ecologie des diptères Chironomidae du Furon et de quelques cours d'eau pollués." Université Joseph Fourier (Grenoble ; 1971-2015), 1986. http://www.theses.fr/1986GRE10055.

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Etude des eaux courantes d'un massif prealpin karstique (vercors). Typologie des differents cours d'eau en vue de l'amenagement du parc regional. Etude hydrobiologique du furon et notamment incidence du rejet polluant de lans en vercors. Etude des populations de chironomidae

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17

Robinet, Christelle. "Modélisation mathématique des phénomènes d'invasion en écologie : exemple de la chenille processionnaire du pin." Paris, EHESS, 2006. http://www.theses.fr/2006EHES0077.

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Ce mémoire présente la modélisation mathématique de la dynamique spatio-temporelle d'une population sous influence du changement climatique. Différentes approches sont réunies ici pour étudier la progression d'un insecte défoliateur, la chenille processionnaire du pin, vers le nord. Le modèle de Ricker avec retard montre que le cycle de pullulation de l'insecte a une période de 6 ans. La dynamique de l'expansion dans le Bassin Parisien est décrite par ce modèle de croissance couplé à une contrainte climatique et à un modèle de diffusion prenant en compte la répartition des pins. Nous montrons

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18

Ge, Wen-Zun, and 葛文俊. "Vertical distributions, Seasonal population changes and post-fumigation reinfestation of insect pests in stored rice." Thesis, 1989. http://ndltd.ncl.edu.tw/handle/97113403986663504200.

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19

Getz, Chonat Greer Louise. "Geographic variation in transposable elements and isozymes in Southern African populations of drosophila melanogaster." Thesis, 1990. https://hdl.handle.net/10539/25039.

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A thesis submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg for the Degree of Doctor of Philosophy.<br>This thesis reports on the investigation of two genetic aspects of Southern African populations of Drosophila Melanogaster: the " family of transposable elements and the allelic variation present in several enzyme systems. (Abbreviation abstract)<br>Andrew Chakane 2018

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