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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.
11

A study and summary of the inheritance of the color patterns in the grouse locust Paratettix texanus Hancock

Yesley, Grace Juanita. January 1950 (has links)
Call number: LD2668 .T4 1950 Y4 / Master of Science
12

Estrutura de comunidade e taxonomia de gafanhotos acridoidea (orthoptera: caelifera) em uma floresta primária na flona de Caxiuanã, Pará, Brasil

Braga , Carlos Elias de Souza 31 July 2015 (has links)
Submitted by Gizele Lima (gizele.lima@inpa.gov.br) on 2016-08-29T13:50:47Z No. of bitstreams: 2 Tese_Doutorado_Carlos_Elias_Braga_Versao_Final.pdf: 12152043 bytes, checksum: a7b7b6014251efdd6515bc62de3a4c6e (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2016-08-29T13:50:47Z (GMT). No. of bitstreams: 2 Tese_Doutorado_Carlos_Elias_Braga_Versao_Final.pdf: 12152043 bytes, checksum: a7b7b6014251efdd6515bc62de3a4c6e (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2015-07-31 / Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq / The Orthoptera are the sixth largest group of insects in number of species, among its representatives stand out the true grasshoppers that are included in the superfamily Acridoidea, which presents terrestrial, semi-aquatic and arboreal habitats, its distribution in the environment depends on vegetable composition and climatic factors. This study aimed to know and to understand the community structure, population dynamics and the taxonomy of Acridoidea grasshoppers in a forest area of eastern Amazonia. For ecological study, sampling was performed monthly from 2008 to 2011, in Flona Caxiuanã (01º57'36.82 "S and 51º36,47'61" W), Portel, Pará, 400 km from Belem. The grasshoppers were collected with entomological nets on two tracks, each of 5 km in length and 1 m in width , the sampling site of PPBio Eastern Amazon. Samples were collected from 8 a.m to 16 p.m., due to the diurnal habit of grasshoppers, so a wide variety of individuals and species could be captured. For the taxonomic study, the captured adults in the sampling were examined, in addition to the Invertebrates Collection of specimens of the Goeldi Museum (MPEG). In total, 10,541 specimens were collected, belonging to three families, eight subfamilies, 19 tribes, 40 genera and 51 species. The Acrididae family was the most abundant (71.7%). Among the captured specimens 60.9% were nymphs and 39.1% adults. Among the adults 56.1% were males and 43.9% females. It was detected the existence of two dominant, four abundant, three common and 42 rare or minimal species. Most species are dendrophilia (58.8%) with gregarious habit (62.7%). A dichotomous key was elaborated for the collected adult specimens in the primary forest and the already existing in the MPEG collection, originating from Caxiuanã. 30 new cases were recorded for Flona Caxiuanã, 14 for the state of Pará, six for Brazil and two for the Amazonian region, a new species (Taeniphora. spp.) and the discovery of 47 endemic species for the Amazon. The population peak for adults occurs in the rainy and for the nymphs in the less rainy season. Temperature and humidity are the climatic factors that most influence the population dynamics of grasshoppers. This study contributed to the expansion of the geographical distribution of Acridoidea species and the occurrence of grasshoppers at Flona Caxiuanã as well as to increase the ecological and taxonomic knowledge of Acridofauna in the Amazon region. / Os ortópteros são o sexto maior grupo de insetos em número de espécies, entre os seus representantes, destacam-se os gafanhotos verdadeiros que estão inseridos na superfamília Acridoidea, os quais apresentam hábito terrestre, semiaquático e arborícola, sua distribuição nos ambientes é dependente da formação vegetal e dos fatores climáticos. Este estudo objetivou conhecer e compreender a estrutura da comunidade, a dinâmica populacional e a taxonomia de gafanhotos Acridoidea em uma área de floresta da Amazônia Oriental. Para o estudo ecológico, a amostragem foi mensal e realizada no período de 2008 a 2011, na Flona de Caxiuanã (01º57’36.82”S e 51º36,47’61”W), Portel, Pará, distante 400 km de Belém. Os gafanhotos foram coletados com rede entomológica em duas trilhas, cada uma de 5 km por 1 m, no sítio de amostragem do PPBio Amazônia Oriental. As coletas foram realizadas das 8h às 16h, devido ao hábito diurno dos gafanhotos, para que pudesse capturar uma grande variedade de indivíduos e espécies. Para o estudo taxonômico, foram examinados apenas os indivíduos adultos capturados na amostragem ecológica, além dos espécimes da Coleção de Invertebrados do Museu Paraense Emílio Goeldi (MPEG) coletados na Flona. Foram coletados 10.541 exemplares, pertencentes a três famílias, oito subfamílias, 19 tribos, 40 gêneros e 51 espécies; Acrididae foi a família mais abundante (71,7%). Entre os espécimes capturados 60,9% eram imaturos e 39,1% adultos; entre os adultos 56,1% foram machos e 43,9% fêmeas. Constatou-se a ocorrência de duas espécies dominantes, quatro abundantes, três comuns e 42 raras ou mínimas. A maioria das espécies é dendrófila (58,8%) e de hábito gregário (62,7%). Elaborou-se uma chave dicotômica para os gafanhotos de floresta primária a partir dos exemplares adultos coletados e pertencentes ao acervo da Coleção do MPEG, oriundos de Caxiuanã. Foram registradas 30 novas ocorrências para a Flona de Caxiuanã, 14 para o estado do Pará, seis para o Brasil e duas para a região Amazônica, uma espécie nova (Taeniphora sp. nov.) e a constatação de 47 espécies endêmicas da Amazônia. As máximas populacionais de adultos ocorrem no período mais chuvoso e dos imaturos no menos chuvoso. A temperatura e a umidade são os fatores climáticos que mais influenciam a flutuação populacional dos gafanhotos. O presente estudo contribuiu para a ampliação da distribuição geográfica das espécies de Acridoidea e da ocorrência de gafanhotos na Flona de Caxiuanã, também para o incremento do conhecimento ecológico e taxonômico da Acridofauna na região Amazônica.
13

Estudo taxonômico das espécies sul-americanas de Bucrates Burmeister, 1838 (Orthoptera: Tettigoniidae: Conocephalinae)

Tavares, Gustavo Costa 03 July 2015 (has links)
Submitted by Inácio de Oliveira Lima Neto (inacio.neto@inpa.gov.br) on 2018-05-21T18:43:04Z No. of bitstreams: 2 Gustavo Tavares.pdf: 5293554 bytes, checksum: 4a609438db484ac8e739197b10ea706c (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-05-21T18:43:04Z (GMT). No. of bitstreams: 2 Gustavo Tavares.pdf: 5293554 bytes, checksum: 4a609438db484ac8e739197b10ea706c (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2015-07-03 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / Bucrates Burmeister, 1838 is a genus of Conocephaloid katydids which all five species within the genus are recorded only to the New World. The species traditionally known were Bucrates capitatus (De Geer, 1773), Bucrates clausus (Scudder, 1878), Bucrates malivolans (Scudder, 1878), Bucrates lanista Rehn, 1918 and Bucrates weissmani Walker, 2014. Most of the descriptions are old and poor in characters, which does not effectively separate the species within the genus, once almost all species were described based only on one or two exemplars. The species within Bucrates are polymorphic, and two or more variations can be found in the same population, which increases the need for a more exhaustive taxonomic study. The species of the monotypic genus Parabucrates Scudder, 1897, Parabucrates brevicauda (Scudder, 1869) was included in this study due to extreme similarity of male genitalia with some species within Bucrates. Other species within Bucrates have male genitalia similar to other closely related genera, which indicates the need of a redescription of the genus, in order to define satisfactorily the characteristics that define Bucrates and its members. This taxonomic study was based on 164 specimens prevenient from depository collections and excursions. The specimens are from Colombia and at least one state of which Brazilian region. Parabucrates brevicauda (Scudder, 1869) was reallocated as Bucrates brevicauda (Scudder, 1869) comb. nov. and Parabucrates was synonymized to Bucrates. The male of B. lanista was described for the first time, as well as a new species for the genus. In addition, a new genus was proposed to allocate the species Gen. nov. clausus (Scudder, 1878) comb. nov.. The distribution of all South-American species was expanded. / Bucrates Burmeister, 1838 é um gênero de esperanças Conocephalinae com todas as cinco espécies registradas apenas para o Novo Mundo. As espécies tradicionalmente conhecidas eram Bucrates capitatus (De Geer, 1773), Bucrates clausus (Scudder, 1878), Bucrates malivolans (Scudder, 1878), Bucrates lanista Rehn, 1918 e Bucrates weissmani Walker, 2014. A maioria das descrições são antigas e pobres em caracteres que possam separar efetivamente as espécies do gênero, uma vez que quase todas foram descritas com base em somente um ou dois exemplares. As espécies de Bucrates são polimórficas, e duas ou mais variações podem ser encontradas em uma mesma população, o que aumenta a necessidade de um estudo taxonômico abrangente. A espécie do gênero monotípico Parabucrates Scudder, 1897, Parabucrates brevicauda (Scudder, 1869) foi incluída neste estudo devido a extrema semelhança da genitália masculina com algumas espécies de Bucrates. Por outro lado, B. clausus apresenta genitália masculina semelhantes à de outros gêneros próximos, o que indica a necessidade de redescrição do gênero, com o objetivo de delimitar de maneira satisfatória as características que definem Bucrates e seus integrantes. Este estudo taxonômico foi realizado com base em 164 exemplares provenientes de empréstimos de coleções depositárias e coletas. Os espécimes são originários da Colômbia e de pelo menos um estado de cada região brasileira. Parbucrates brevicauda (Scudder, 1869) comb. nov. está sendo realocado como Bucrates brevicauda (Scudder, 1869) comb. nov. e Parabucrates está sendo sinonimizado a Bucrates. O macho de B. lanista está sendo descrito pela primeira vez, assim como uma espécie nova para o gênero. Além disso, um novo gênero está sendo proposto para alocar a espécie Gen. nov. clausus (Scudder, 1878) comb. nov.. A distribuição de todas as espécies sul-americanas foi expandida.
14

Revision of certain pyrgomorphid genera previously included in the Orthacridini (Orthoptera), together with descriptions of closely related new genera.

Singh, Asket. January 1964 (has links)
The first independant treatment of the acridoid family Orthoptera, Pyrgomorphidae, was that of Bolivar (1884). A revision was published later by Bolivar (1904-5) and this was summarised with s1ight modification shortly afterwards (Bolivar, 1909). No comprehensive review has been pub1ished subsequently, although a revision of the tribal arrangement was recently the subject of study by Akbar (1963) who gives a full review of the various changes that have occurred at the suprageneric level up to the present. [...]
15

The genus Atractomorpha Saussure, 1862, with special reference to the phallic structures. (Orthoptera: Acridioidea: Pyrgomorphidae).

Chen, Yuan-Kao. January 1966 (has links)
Atractomorpha Saussure, 1862, is the type genus of the tribe Atractomorphini ( Orthoptera; Acridoidea; Pyrgomorphidae), the modern concept of which is indicated by Kevan and Akbar (1964). Various species of this genus are wide-spread throughout the 0ld World tropics and subtropics, occurring from West Africa to the Indo-Malayan and Papuan regions, and as far east as the Solomon Islands. [...]
16

Karyotype stability and heterochromatin variability in species of Orthoptera.

Fontana, Pier Giorgio. January 1975 (has links)
No description available.
17

Evolutionary implications of variation in the calling song of the cricket Gryllus bimaculatus De Geer (Ortohptera: Gryllidae

Ferreira, Marna. January 2006 (has links)
Thesis (M. Sc.)(Zoology)-- University of Pretoria, 2006. / Includes bibliographical references. Available on the Internet via the World Wide Web.
18

Možnosti využití některých druhů bezobratlých v entomofágii bez narušení stability populací

Kodytek, Jan January 2008 (has links)
No description available.
19

The Taxonomy of Utah orthoptera with notes on distribution

Barnum, Andrew H. 01 June 1952 (has links)
To an entomologist, the Orthoptera1 is in a state of confusion with respect to the available literature. Work has been done, and is now being done on the orthopteran fauna, but manuals tor identification of most species are not available for all sections or the country. Exclusive of a few lim-ited groups, Utah is among the areas that has no complete keys for taxonomic workers. In biological ivenstigations identification is essential: The species being studied must be definitely known. The primary purpose of this study, therefore, is to list the Utah Orthoptera and provide the keys necessary to their critical study.
20

Revision of certain pyrgomorphid genera previously included in the Orthacridini (Orthoptera), together with descriptions of closely related new genera.

Singh, Asket. January 1964 (has links)
No description available.

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