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  • About
  • 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.
1

The feeding ecology and distribution of Megaloceraea recticornis (Geoffroy)

Wetton, M. N. January 1984 (has links)
No description available.
2

Distribuição espacial e plano de amostragem sequencial para Euschistus heros (Fabricius, 1794) (Heteroptera: Pentatomidae) na cultura da soja convencional e transgênica

Souza, Leandro Aparecido de [UNESP] 17 February 2012 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:25:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-02-17Bitstream added on 2014-06-13T20:08:02Z : No. of bitstreams: 1 souza_la_me_jabo.pdf: 356312 bytes, checksum: 1f99971b769ad33171806e2fce259a1e (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Os percevejos são importantes pragas da soja, e o conhecimento de sua bioecologia e distribuição na cultura, é indispensável para realizar amostragens e determinar o nível de controle. O objetivo do trabalho foi estudar a distribuição espacial de Euschistus heros na cultura da soja em cultivar de soja convencional e transgênica e elaborar um plano de amostragem sequencial. O experimento foi conduzido no ano agrícola 2010/2011, na FCAV/Jaboticabal/SP/Brasil, em dois campos de 10.000 m2, subdivididos em 100 parcelas de 10 m x 10 m. As cultivares semeadas foram M 7908 RR e M-SOY 8001. As amostragens foram semanais, sendo anotado o número de ninfas do 1o ao 5º ínstar e o número de adultos. Para estudo da dispersão dos insetos na área, foram utilizados os índices: razão variância/média, índice de Morisita, Coeficiente de Green e expoente k da distribuição Binomial Negativa. Para estudo dos modelos probabilísticos que descrevem a distribuição espacial dos insetos, foram testados os ajustes às distribuições de Poisson e Binomial Negativa. As ninfas de 1º ao 3º ínstar apresentaram distribuição espacial agregada, ninfas de 4º e 5º ínstar, adultos e ninfas de 4º e 5º ínstar mais adultos, apresentaram variação na disposição, de moderadamente agregada à aleatória. No teste de ajuste às distribuições de probabilidade, o modelo de distribuição Binomial Negativa obteve ajuste para ninfas de 1º ao 3º ínstar, ninfas de 4º e 5º ínstar, adultos e ninfas de 4º e 5º ínstar mais adultos. Foi elaborado um Plano de Amostragem sequencial para percevejos de 4º e 5º ínstar ninfal e adultos, e o número máximo de unidades amostrais para se tomar a decisão foi nove / The stink bugs are important pests of soybean, and the knowledge of their bioecology and distribution in the culture is essential to carry out sampling and determine the control level. Thus, this work aimed to study the spatial distribution of Euschistus heros on transgenic and conventional soybean cultivars, and develop a sequential sampling plan. The experiment was conducted during 2010/2011 agricultural season, in FCAV/Jaboticabal/SP/Brazil, in two 10,000 m2 fields, divided in 100 equal 10 m x 10 m plots. The cultivars seeded were M 7908 RR and M-SOY 8001. Samplings were realized weekly, and the number of first to fifth instar nymphs and the adults were recorded. The follow indexes were used to evaluate the insects dispersion in the area: variance/ mean relationship, Morisita’s index, Green's coefficient and exponent k of Negative Binomial distribution. For the probabilistic models studies that describe the spatial distribution of insects, were tested the adjustments of Poisson distributions and Negative Binomial. The first to third instar nymphs showed aggregated spatial distribution; fourth and fifth instar nymphs, adults and fourth and fifth instar nymphs plus adults showed variation from moderately aggregated to random in disposition. On the adjustment to probability distributions test, the Negative Binomial distribution model fitted for first to third instar nymphs, fourth and fifth instar nymphs, adults and fourth and fifth instar nymphs plus adults. A sequential sampling plan was builted for fourth and fifth instar nymphs plus adults. The maximum number of sample units to make the decision was nine
3

Interactions of the squash bug, Anasa tristis (Degeer) (Coreidae, hemiptera), and six varieties of squash (Cucurbita spp.)

Novero, Emiliana Sierra January 2011 (has links)
Digitized by Kansas State University Libraries
4

The biology of Zelus renardii Kolenati and Zelus socius Uhler (Hemiptera: Reduviidae)

El-Tom, Hassan Abbas, 1935- January 1965 (has links)
No description available.
5

Notes on the life history of Prospaltella perniciosi Tower: (b) The External anatomy of the squash bug, Anasa tristis DeG. (c) A New hymenopterous parasite on Aspidiotus perniciosus Comst. (d) The Mechanism of the mouth parts of the squash bug, Anasa tristis DeG /

Tower, Daniel G. 01 January 1914 (has links)
The following notes were taken during the early spring, fall and winter of 1913, and the spring of 1914. This parasite, a description of which, both male and female, was published in the Ann. Ent. Soc. Am., vol. VI, No. I, pp. 125-126, is a true internal parasite, the larval forms living within the body tissues of its host, the female San Jose scale, Aspidiotus perniciosus Comst., except during the last part of the second larval stage as at this time the entire contents of the host are consumed by the larva, which, after passing its waste, pupates in the empty skin of the scale. Both male and female parasites emerge from the empty skins of second-stage and early third-stage female scales, but by far the largest number emerge from second-stage scales. The following description of the life cycle of the parasite, which has been worked out, is that of a parasite maturing in and emerging from a second stage scale. No doubt the development of those which emerge from third stage scales is the same.
6

The biology of Trichopoda pennipes Fab. (Diptera; Tachinidae),: a parasite of the common squash bug.

Worthley, Harlan N. 01 January 1923 (has links)
No description available.
7

The Tingidae (Hemiptera: Heteroptera) of Southern Central America (with an Emphasis on Costa Rica)

Knudson, Alexander January 2018 (has links)
The genera of Tingidae of the neotropics are herein diagnosed and a key for their identification is also provided. Five new genera are described from Central America, two from Panama, two from Costa Rica, and one new genus is described from Mexico. This brings the total of neotropical genera to 74. One new species, Mexibyrsa woolleyi is described from Mexico. The Tingidae of southern Central America (Nicaragua, Costa Rica, and Panama) are reviewed in detail. There are now 153 described species spread among 43 genera. Thirty-two new species from southern Central America are described. Identification keys are provided for all species found in the study region. / NDSU Entomology Scholarship Committee / Oswald, John D. (TAMU)
8

Comparative morphology of saldidae and Mesoveliidae (Heteroptera) and its bearing on classification

Gupta, Ayodhya Prasad January 1961 (has links)
On the basis of his study of the female genitalia, Scudder (1959) suggested that in the Heteroptera-Hemiptera, the families Saldidae and Mesoveliidae might be closely related; the present morphological study was undertaken to determine whether a study of other characters also supports their inclusion in a natural group. In these two families, comparison of the head structures revealed that they are quite distinct. The thorax revealed two types: a Saldula type, and a Mesovelia type, and since it is shown that the structure of the thorax is of little taxonomic value in distinguishing the suprafamilial categories, it was considered that the differences between the Saldidae and the Mesoveliidae need not necessarily indicate a fundamental taxonomic difference. In the abdomen, the presence of the clasping organ in the Saldidae completely separates this family from the Mesoveliidae, The present study shows that the Saldidae and the Mesoveliidae are not closely related as might be inferred from comparisons of the female genitalia; they are quite distinct morphologically. The taxonomic position of the two families was also considered. Most authorities believe that the Mesoveliidae are appropriately placed in the Amphibicorisae, and this is supported by the present study. The position of the Saldidae, on the other hand, has heretofore been very uncertain since this family shows some Pentatomomorph features as well as some Cimicomorph features. Two alternatives have been suggested in this thesis regarding the systematic position of the Saldidae. According to the first, the Saldidae may be considered a Cimicomorph which branched off from the main stem of Cimicomorpha, and subsequently developed Pentatomomorph characters - an assumption which presupposes that parallel evolution has occurred. Alternatively, the Saldidae may be considered a branch of the Pentatomomorpha, which arose after the evolution of some Pentatomomorph characters, but before the evolution of the complete Pentatomomorph complex of characters. This latter alternative takes cognisance of the fact that the Pentatomomorph complex of characters evolved gradually and not by a single 'saltation'. It has been concluded, however, that the data available at present are not sufficient to enable one to state which of the two alternatives mentioned above is the correct one, although I am inclined to consider the former as the more plausible. In addition to the foregoing, two general aspects of the morphology of the Heteroptera were considered, namely the interpretation of the head sclerites and the variation in the thoracic structure between apterous and macropterous forms of the two families. / Science, Faculty of / Zoology, Department of / Graduate
9

Mark's Feminist Froze to Default in an Implementation String

January 2015 (has links)
abstract: The strips in Mark's Feminist Froze to Default in an Implementation String transfer the lives of feminists absent and imagined, overbearing and empathetic--cross dressers, lethal injectors, expats, planets, and Canadian survivalists--in an autumn to characteristic, unsettle, and reassess controller utterances of masculinity. / Dissertation/Thesis / Masters Thesis Creative Writing 2015
10

Distribuição espacial e plano de amostragem sequencial para Euschistus heros (Fabricius, 1794) (Heteroptera: Pentatomidae) na cultura da soja convencional e transgênica /

Souza, Leandro Aparecido de. January 2012 (has links)
Orientador: Jose Carlos Barbosa / Coorientador: Antonio Carlos Busoli / Banca: Arlindo Leal Boiça Júnior / Banca: Marcos Gino Fernandes / Resumo: Os percevejos são importantes pragas da soja, e o conhecimento de sua bioecologia e distribuição na cultura, é indispensável para realizar amostragens e determinar o nível de controle. O objetivo do trabalho foi estudar a distribuição espacial de Euschistus heros na cultura da soja em cultivar de soja convencional e transgênica e elaborar um plano de amostragem sequencial. O experimento foi conduzido no ano agrícola 2010/2011, na FCAV/Jaboticabal/SP/Brasil, em dois campos de 10.000 m2, subdivididos em 100 parcelas de 10 m x 10 m. As cultivares semeadas foram M 7908 RR e M-SOY 8001. As amostragens foram semanais, sendo anotado o número de ninfas do 1o ao 5º ínstar e o número de adultos. Para estudo da dispersão dos insetos na área, foram utilizados os índices: razão variância/média, índice de Morisita, Coeficiente de Green e expoente k da distribuição Binomial Negativa. Para estudo dos modelos probabilísticos que descrevem a distribuição espacial dos insetos, foram testados os ajustes às distribuições de Poisson e Binomial Negativa. As ninfas de 1º ao 3º ínstar apresentaram distribuição espacial agregada, ninfas de 4º e 5º ínstar, adultos e ninfas de 4º e 5º ínstar mais adultos, apresentaram variação na disposição, de moderadamente agregada à aleatória. No teste de ajuste às distribuições de probabilidade, o modelo de distribuição Binomial Negativa obteve ajuste para ninfas de 1º ao 3º ínstar, ninfas de 4º e 5º ínstar, adultos e ninfas de 4º e 5º ínstar mais adultos. Foi elaborado um Plano de Amostragem sequencial para percevejos de 4º e 5º ínstar ninfal e adultos, e o número máximo de unidades amostrais para se tomar a decisão foi nove / Abstract: The stink bugs are important pests of soybean, and the knowledge of their bioecology and distribution in the culture is essential to carry out sampling and determine the control level. Thus, this work aimed to study the spatial distribution of Euschistus heros on transgenic and conventional soybean cultivars, and develop a sequential sampling plan. The experiment was conducted during 2010/2011 agricultural season, in FCAV/Jaboticabal/SP/Brazil, in two 10,000 m2 fields, divided in 100 equal 10 m x 10 m plots. The cultivars seeded were M 7908 RR and M-SOY 8001. Samplings were realized weekly, and the number of first to fifth instar nymphs and the adults were recorded. The follow indexes were used to evaluate the insects dispersion in the area: variance/ mean relationship, Morisita's index, Green's coefficient and exponent k of Negative Binomial distribution. For the probabilistic models studies that describe the spatial distribution of insects, were tested the adjustments of Poisson distributions and Negative Binomial. The first to third instar nymphs showed aggregated spatial distribution; fourth and fifth instar nymphs, adults and fourth and fifth instar nymphs plus adults showed variation from moderately aggregated to random in disposition. On the adjustment to probability distributions test, the Negative Binomial distribution model fitted for first to third instar nymphs, fourth and fifth instar nymphs, adults and fourth and fifth instar nymphs plus adults. A sequential sampling plan was builted for fourth and fifth instar nymphs plus adults. The maximum number of sample units to make the decision was nine / Mestre

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