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 12 of 12 for “"Isoptera"”.
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Mecanismos de defesa em ninhos de cupins (Insecta: Isoptera)
Cupins apresentam um elaborado sistema de defesa, porém seus ninhos são frequentemente invadidos por uma variedade de organismos. Os mecanismos que permitem a invasão em cupinzeiros ainda não foram elucidados. Sendo assim, o objetivo desta disserta¸cão foi compreender os mecanismos de defesa em …
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Endokrine Signale in der Kastendetermination der ursprünglichen Termite Mastotermes darwiniensis Froggatt (Isoptera: Mastotermitidae)
Als „ecosystem engineers“ sind Termiten in subtropischen und tropischen Ökosystemen von wichtiger ökologischer Bedeutung. Gleichzeitig gelten einige Termitenarten als Bauholz- und Agrarschädlinge, die weltweit vorkommen und enorme Schäden anrichten können. Für die Entwicklung effizienter und …
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Hexaflumuron Efficiency and Impact on Subterranean Termite (Reticulitermes spp.) (Isoptera: Rhinotermitidae) Gut Protozoa
The effect of competing food sources on termite consumption of hexaflumuron bait and subsequent mortality was examined. Also, the effect of hexaflumuron on the termite gut fauna was evaluated to determine if hexaflumuron could kill termites via a secondary mode of action. Hexaflumuron consumption …
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Factors Affecting Nitrogen Fixation Rates in Termites (Isoptera: Rhinotermitidae: <i>Reticulitermes</i>) and Termite Nitrogen Contributions of Forest Ecosystems
<p>Termites host symbiotic bacteria that fix atmospheric nitrogen, which makes termites important in the biogeochemical cycling of nitrogen in ecosystems. The objective of this study was to estimate annual nitrogen contributions by termites by examining seasonal rates of nitrogen fixation, seasonal …
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The effect of Moringa Oleifera leaves and termite (Isoptera) powders on nutritional and sensory properties of an instant-maize porridge
… conditions. Moringa oleifera (MO) and termite (Isoptera spp.) are known to contain a substantially high amount of protein. The aim of this study was to determine the effect of powders from MO leaves and termite on the nutritional and sensory properties of instant-maize porridge. Inclusion of MO …
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Secondary Plant Compounds as Feeding Deterrents in the African Subterranean Termite Schedorhinotermes lamanianus Sjöstedt (Isoptera: Rhinotermitidae): A Behavioural and Neurophysiological Approach
In the present study, the influence of plant-derived secondary compounds on feeding behaviour in the subterranean termite Schedorhinotermes lamanianus was investigated. Furthermore, the chemosensory input system responsible for the perception of these compounds was investigated using …
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The effects of heuweltjies and Microhodotermes viator (Isoptera: Hodotermitidae) on invertebrate assemblages and species turnover in the succulent Karoo, Western Cape
Species turnover is a measure of a diversity that attempts to quantify the change in species composition along a spatial, temporal or environmental gradient. One such environmental gradient that has been shown to affect species turnover is local edaphic variation. This is seen in the Western Cape …
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Termite Inquilinism: proximate mechanisms mediating coexistence
… symbiotic relationship. Keywords: Symbiosis, Isoptera, Physiology, Social Insects, Cohabitation
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Comparison of Subterranean Termite (Rhinotermitidae: Reticulitermes) Gut Bacterial Diversity Within and Between Colonies and to Other Termite Species Using Molecular Techniques (ARDRA and 16S rRNA Gene Sequencing)
… were entirely composed of phylotypes specific to Isoptera.
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Regulação de areas de forrageamento e estruturação de comunidades de cupins
… e interações negativas. Os cupins (Insecta: Isoptera) são organismos detritívoros que apresentam grande importância econômica e ecológica. No entanto, ainda não são totalmente conhecidos os mecanismos que estruturam as comunidades destes insetos. Com o intuito de preencher parte desta lacuna, …
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Phylogeny of the Polyneopterous Insects With Emphasis on Plecoptera: Molecular and Morpological Evidence
Polyneoptera is an assemblage of eleven insect orders comprising the "orthopteroid" insects. It includes familiar insects such as grasshoppers, roaches, termites, earwigs and preying mantises; as well as the more obscure web-spinners, angel insects and ice-crawlers. We present a phylogenetic …