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 28 for “"Syrphidae"”.
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Revisão das espécies neotropicais de Xanthandrus Verral, 1901 (Diptera, Syrphidae)
… are easily distinguished from most of the other Syrphidae by their face with central prominence, metathoracic pleuron with fine pile ventrad of spiracle, and broad flat elliptic abdomen with markings. From the twelve species cited by THOMPSON et al., 1976, in the catalogue of the Diptera, six are …
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An ecological study of Batesian mimicry in the British Syrphidae (Diptera)
… is concerned with Batesian mimicry in British Syrphidae (Diptera), and examines the question of whether the ifies gain protection from mimicry. Batesian mimicry is the resemblance of a palatable animal (the mimic) to a distasteful or otherwise protected animal (the model), such that protection …
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A comparative study of the syrphidae (diptera) from different habitats within Bernwood Forest
1. Syrphidae were chosen as indicators of diversity in samples from five Malaise traps chosen to represent the transition from deciduous to coniferous woodland. 20, 234 syrphids of 115 species were captured between 1 April and 30 September 1980 - 1982. 2. Seasonal distribution is bimodal, with …
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The Behavioral Ecology of Certain Syrphidae (Diptera), With Descriptions of The Immature Stages of Mallota Posticata (Fabricius)
Made available in DSpace on 2014-12-14T07:04:01Z (GMT). No. of bitstreams: 1 7804082.pdf: 4088413 bytes, checksum: 3fa7d1ef6832e6f297178cfda42dd961 (MD5) Previous issue date: 1977
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Assessing adaptive winter behaviors of beneficial arthropods, with a focus on the long-distance migratory ecology of Nearctic hover flies (Diptera: Syrphidae)
Temperate climates present significant challenges for many insects. During the winter, insects are met with freezing temperatures and lack of resources that are normally accessible during warmer months. Consequently, insects have evolved behavioral and physiological strategies for surviving winter. …
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Keanekaragaman serangga pada tanaman teh (Camellia sinensis L.) di perkebunan teh PTPN XII Bantaran Blitar
… Muscidae, Micropezidae, Tachinidae, Syrphidae, Stratiomydae, Sciaridae dan Acrididae, 3 famili sebagai predator, 7 famili sebagai Herbivora, 1 famili sebagai Polinator dan 2 famili sebagai parasitoid. Pada stasiun 2 terdiri dari 7 ordo dan 15 famili dengan jumlah total individu 414, …
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Efekt zkušeností a květních vlastností na projev preferencí a věrnosti u Eristalis tenax
… to multiple floral traits in hoverflies (Syrphidae, Diptera), which are an important pollinator group. In this study, I investigated the degree of preference and constancy of common drone fly Eristalis tenax L (Syrphidae) as a function of two floral traits, colour and size, and as a …
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The Use of Buckwheat Border Habitats to Attract Natural Enemies of Cucumber Beetles in a Cucurbit Agroecosystem
… The Order Diptera; the Families Tachinidae and Syrphidae of Diptera; and the Order Hymenoptera. In 1995-1996, rows of squash, Cucurbita pepo (L.) var. melopepo (Alef.) ‘Seneca Prolific’, and cucumbers, Cucumis sativa (L.) ‘Arkansas Littleleaf’, were planted perpendicular to floral border …
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Inaugural studies of the life history and predator/prey associations of Heringia calcarata (Loew)(Diptera: Syrphidae), a specialist predator of the woolly apple aphid, Eriosoma lanigerum (Hausmann)(Homoptera: Eriosomatidae)
The life history of the aphidophagous syrphid fly, Heringia calcarata (Loew), a specialist predator of woolly apple aphid, Eriosoma lanigerum (Hausmann), was studied in Virginia from 2001 to 2003, under field and laboratory conditions. Pronounced differences in the chorionic sculpting of eggs of …
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Das Blüte-Bestäuber-Netz auf Brachflächen : biozönologische Untersuchung zur Bedeutung von Brachen in einer intensiv genutzten Agrarlandschaft
… ausgewählter blütenbesuchender Insektengruppen (Syrphidae, Lepidoptera) untersucht. Die Freilandarbeiten fanden von 1998-2000 im Raum der Feldberger Seenlandschaft, Mecklenburg-Vorpommern, statt. Es werden die beiden Hauptnahrungsquellen Nektar und Pollen betrachtet, dabei fanden Untersuchungen …
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Rate of Food Consumption of Acris Crepitans Blanchardi Harper in South-Central Iowa
… from Aphididae, Cicadellidae, Curculionidae, Syrphidae, and Locustidae. Recommendations. The techniques developed for determining the rate of food passage can be applied to studies of other anurans. Field cages should be used to reduce unnatural conditions.
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The influence of linear landscape features on pollinator behaviour
… were no significant differences in hoverfly (Syrphidae) abundance between patches. Later, the same experimental array was scaled up to fit within the farm landscape structure, using an existing hedgerow as the connection. A similar pattern of flight directions emerged. In a landscape …
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Keanekaragaman makrozoobentos sebagai bioindikator kualitas perairan Ranu Pani - Ranu Regulo Taman Nasional Bromo Tengger Semeru
… Hirudidae 14 ekor, Glossiphoniidae 22 ekor, Syrphidae 1 ekor, Gomphidae 1 ekor, Coanagrionidae 3 ekor dan Gammaridae 1 ekor dan di perairan Ranu Regulo terdiri dari: Coanagrionidae 50 ekor, Aeshnidae 5 ekor dan Asselidae 5 ekor. Keanekaragaman di perairan Ranu Pani dan Ranu Regulo tergolong …
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