Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 36 for “"Odonata"”.
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Hormonal control of flight metabolism in Odonata?
… in P. inconspicuum. The AKH peptides of other Odonata were investigated. In the suborder Anisoptera, Ani-AKH was identified in representatives of the Aeshnidae, Cordulegasteridae, and possibly the Corduliidae. Lia¬ AKH was identified in representatives of the Libellulidae and Gomphidae. In the …
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Revisão do genero Oxyagrion Selys, 1876 (Odonata, Coenagrionidae)
A revisionary study of the genus Oxyagrion Selys, 1876 offering an analysis of all scientific literature concerning it, listing of localities with geographical position (Brazilian map on the millionth) and altitude, reexamination of almost all existing types, subsequent designation of individual …
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A contribution to the knowledge of the odonata
… the comparative morphology of fossil and recent Odonata indicates that Protozygoptera and Protanisoptera represent evolutionary side branches, that the Anisozygoptera is polyphyletic, and that Isophlebiidae and Calopterygoidea are the most generalized Odonata known. Previous scenarios explaining …
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Revisão do gênero Zenithoptera Bates, in Selys Longchamps, 1869 (Odonata, Libellulidae)
Zenithoptera Bates, in Selys Longchamps, 1869, is formally characterized, and the synonymy of two Linnean names related to this genus is discussed and Libellula fasciata is proposed as a new synonym of L. americana. Z. americana (L.,1758) Z. viola Ris, 1910, Z. lanei Santos, 1941 and Z. anceps …
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Análise filogenética das espécies de Castoraeschna Calvert, 1952 (Insecta, Odonata, Aeshnidae)
… extensively used in a phylogenetic analysis in Odonata.
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Population genetic structure of Antarctic springtails (Collembola) and New Zealand damselflies (Odonata)
… variability of the New Zealand damselfly genera (Odonata) from sites throughout the North, South and Chatham islands using both allozyme and mtDNA analyses. All morphologically recognized species were clearly discernible on the basis of both mtDNA and allozymes. However, variability within and …
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Diversity, species composition and distribution of odonates (odonata) in Johor state, peninsular Malaysia
Johor is undergoing rapid socioeconomic development; some forms of prioritization of conservation area are needed as the best resemblance of original biodiversity. Through effective management, it would assist the state for a better conservation practice. The purpose of this research is to provide …
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Perch Selection by Male Dragonflies (Odonata, Anisoptera) Related to Competitive Ability and Species Composition
<p>Males of many species of dragonflies (Odonata, Anisoptera) establish territories in aquatic habitats where they compete with other males for access to food and females. Territorial males typically perch on emergent vegetation and chase rival males who intrude into their territories. This …
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Studies on the Odonata and Trichoptera of high-elevation lakes of northern Colorado and southern Wyoming
Freshwater biodiversity loss is a major concern, and global warming is already causing a significant role in species extinctions. The main goal of this research was to provide a baseline for specific aquatic insect species distributions at high-elevation lentic habitats in Northcentral Colorado and …
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Distribuição das espécies de Odonata e o padrão de diversidade beta encontrado entre riachos na Amazônia Central
… beta das espécies que compõem as comunidades de Odonata presentes nas bacias hidrográficas existentes na Reserva Florestal Adolfo Ducke, bem como promover informações dos fatores que determinam o padrão de similaridade de composição de fauna entre locais, visando a escolha de unidades viáveis …
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Environmental controls in the seasonal succession and synchronization of development in some pond species of damselflies (Odonata: Zygoptera)
Environmental factors which control seasonal succession and synchronization of development in seven species of pond-dwelling Zygoptera were investigate. A three phase succession was observed. Three species of Coenagrionidae, Coenagrion angulatum, C. resolutum and Enallagma boreale which …
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Aspectos da variação morfométrica em Triacanthagyna septima (Selys, 1857) (Insecta, Odonata, Aeshnidae), com notas sobre a sua taxonomia
Triacanthagyna septima occurs from South Mexico and Greater Antilles to Southeastern Brazil. This species shows morphological variations of discrete nature in some structures of the wing venation. These variations were analyzed, using statistical methods, in 225 specimens from Southeastern Brazil. …
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Ecology of benthic macroinvertebrates in experimental ponds
… aquatic insects in the orders Ephemeroptera and Odonata, successional patterns over 2 years of pond development, and precision of 15 biological metrics in a series of 6 replicate experimental ponds from March 1989 to April 1990. I determined voltinism, emergence patterns, larval growth rates and …
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Aspectos da biologia, morfologia e ontogenia da larva de Coryphaeschna perrensi (McLachlan, 1887) (Insecta, Odonata, Aeshnidae), com algumas considerações filogenéticas
… of Coryphaeschna perrensi (McLachlan, 1887) (Odonata, Aeshnidae), with some phylogenetic considerations. The larval cycle of the dragonfly Coryphaeschna perrensi was studied based mainly on material collected monthly during two years (1987-1988) in a sand dune swamp located in Maricá, Rio de …
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Composição preliminar e distribuição espacial da Odonatofauna na microbacia do Rio Sousa e no Rio Macacu, Cacheiras de Macacu, RJ com notas sobre dados abióticos (Insecta: Odonata)
The preliminary composition and the distribution of the odonatofauna of the four collect sites, placed in a microbasin and in an upper region of a river were evaluated, based on samples realized for 12 months in Cachoeiras de Macacu, RJ. Climatological and hydrological data from the collect sites …
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Composition, Biomass, and Protein Content of a Lemna trisulca L., Invertebrate Community in a Prairie Wetland
… Protein values for amphipods, gastropods, and Odonata were found to be substantially higher than that of duckweed. Significant associations were found between the biomass and protein content of duckweed and the biomass and densities of specific invertebrates. Amphipoda, Pleidae, Cladocera, …
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Effects of Various Pesticides on Hyalella Azteca
… especially several members of the order Odonata, feed upon Hyalella. Strong (1972) reported that Hyalella is a natural food source for at least six species of fish. Thus, late in the aquatic food chain.
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Variation in fluctuating asymmetry among nine damselfly species.
… comparisons of FA in single damselfly species (Odonata: suborder Zygoptera) from stressed environments have often been inconclusive. We measured levels of FA among multiple species of damselflies from the same environment to determine the relative roles of environmental stress and species …
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Etnoentomologi dalam kalangan kaum Orang Asli dan Melayu di Semenanjung Malaysia
… Orthoptera; Homoptera; Lepidoptera; Hemiptera; Odonata; Blattodea; Mantodea; Phasmatodea; Diptera dan Neuroptera, manakala di luar negara sebanyak 13 order; tidak termasuk Phasmatodea tetapi termasuk Trichoptera dan Plecoptera. Berdasarkan analisis data mendapati serangga mengandungi mineral, …
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