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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 29 for “"Apidae"”.
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Population ecology and parasitism in bumble bees (Hymenoptera: apidae)
The development of three colonies of Bombus fervidus (Fabricius) and two of Bombus pennsylvanicus (Degeer) was studied. Population levels and the production of males and young queens varied among colonies and between years. Mean longevity of worker bees decreased significantly toward the end of the …
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Landscape effects on bumble bee (Hymenoptera: Apidae) colony performance and fitness in New York State
Pollinators such as bumble bees are in decline as a result of many factors, including loss of habitat. Initiatives to improve and restore pollinator habitat have become increasingly popular. However, to most effectively conserve pollinators, we need a better understanding of which habitats are …
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Bumble Bees (Apidae: Bombus) Through the Ages: Historical Biogeography and the Evolution of Color Diversity
In the final chapter, I add the rare obligate social parasite Bombus inexspectatus to the phylogeny to assess the evolution of social parasitism. B. inexspectatus is not the sister taxon to its host B. ruderarius, but a close relative, and therefore adheres to the loose version of Emery's rule.
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Molecular Phylogeny of Stingless Bees: Insights Into Divergence Times, Biogeography, and Nest Architecture Evolution (Hymenoptera: Apidae: Meliponini)
The dissertation is concluded with a biological catalog of the Indo-Malayan/Australasian stingless bees including 519 literature references, and deals with 129 proposed names for species-group taxa, of which 89 are considered currently valid. Information is summarized on organisms associated with …
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Phylogeny and color pattern evolution in a New World bumble bee (Hymenoptera: Apidae: Bombus: Pyrobombus) species complex
Bombus ephippiatus is one of the most common and widespread bumble bee species throughout Mexico and Central America. This robust and charismatic species possesses a highly variable color pattern throughout its wide distribution across montane and lowland regions, which raises the question of …
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Uso de Abelhas sem Ferrão (Hymenoptera, Apidae: Meliponini) na polinização do tomate cereja cultivado em casa de vegetação
O presente trabalho teve por objetivo avaliar o efeito da polinização realizada pelas abelhas sem ferrão Melipona quadrifasciata, Melipona bicolor, Nannotrigona testaceicornis e Partamona helleri na qualidade dos frutos do tomate do grupo “Cereja” cultivado em casa de vegetação. Os experimentos …
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Ação da própolis de Scaptotrigona aff. postica (Latreille, 1807) (Hymenoptera, Apidae, Meliponini) em diferentes linhagens de células tumorais
A própolis de abelhas sem ferrão (Apidae, Meliponini) vem sendo estudada nos últimos anos em várias linhagens de células tumorais quanto à citotoxidade de seus componentes. Neste estudo, extratos etanólicos de própolis de Scaptotrigona aff. postica nas concentrações: 1 mg/mL, 0,5 mg/mL, 0,25 mg/mL …
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Developmental timing of pupation and analysis of color pattern response to thermal stress in Bombus impatiens (Hymenoptera: Apidae)
Bumble bees comprise a genus of approximately 250 species that exhibit high diversity in color pattern phenotypes, colony sizes, and habitats across the globe. Nearly two centuries of research have investigated the biological factors leading to their widespread distribution and ecological …
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Estudo dos parâmetros biométricos de Melipona scutellaris Latreille, 1811 (HYMENOPTERA: APIDAE) em diferentes estações do ano no brejo paraibano
Brazil is very rich on its biodiversity, bees are an example of this, being possible to find several species from the north to the south of the country. These insects play a key role in pollination of plant species, and consequently in food production. Because they have the potential to produce …
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Glutamic Acid Decarboxylase and the Gamma-Aminobutyric Acid Pathway in the Supraesophageal Ganglion of the Honeybee, Apis Mellifera (Hymenoptera, Apidae)
Made available in DSpace on 2014-12-11T18:05:31Z (GMT). No. of bitstreams: 1 7105098.pdf: 3708700 bytes, checksum: fe7964e6cd4b948a191c97559688f42f (MD5) Previous issue date: 1970
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Effects of an insecticide/fungicide mixture on queen rearing behavior and hypopharyngeal gland morphology in honey bees (Apis mellifera L.) (Hymenoptera: Apidae)
Almond growers in California’s Central Valley routinely use tank mixes of the diamide insecticide chlorantraniliprole and the triazole fungicide propiconazole for pest management during bloom. Although this mix is considered safe for honey bees, I investigated possible sublethal effects on the …
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Ecology of stingless bees (Apidae, Meliponini) in lowland dipterocarp forests in Sabah, Malaysia, and an evaluation of logging impact on populations and communities
The present thesis reports on four years of field research on stingless bee ecology in Sabah, Malaysia. Hereby, it was the main focus to evaluate the effect of selective logging for timber extraction on communities of bees, and to elucidate causative relationships involved in regulating bee …
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Behavioral Response of Honey Bees (Apis Mellifera L. (Hymenoptera: Apidae)) to Colony Disturbance by Smoke, Acetic Acid, Isopentyl Acetate, Light, Temperature and Vibration
Made available in DSpace on 2014-12-09T20:27:21Z (GMT). No. of bitstreams: 1 6801817.pdf: 2227632 bytes, checksum: e782b07e1887c4cb02cfdc20e975a55c (MD5) Previous issue date: 1967
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Competitive Effects of Honey Bee (Apis melifera) Hives on Morphology and Morphology-Based Abundance of Bumble Bees (Apidae: Bombus) in an Urban Prairie Landscape (City of Red Deer, Alberta)
This thesis aimed to establish whether there were measurable effects of managed honey bees (Apis melifera) on bumble bee (Bombus) populations in the City of Red Deer, with an intent to aid wild bee conservation in the area as well as decision-making regarding possible legislation of honey bee …
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Investigating the morphological adaptations and fungal associations of the small hive beetle, Aethina tumida Murray (Coleoptera: Nitidulidae)
… honey bee, Apis mellifera L. (Hymenoptera: Apidae). Drawn to honey bee hives by volatiles from the yeast Kodamaea ohmeri (Ascomycota: Saccharomycotina), the beetles must avoid injury from the stings of aggressive guard bees while successfully taking advantage of the hive resources. This …
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Grip, slip, petals, and pollinators: Linking the biomechanics, behaviour and ecology of interactions between bees and plants
… was categorised for the large bee family Apidae. Cleft/bifid claws were shown to be present in the majority of the Apidae, often with differences between sexes and clades. Using $\textit{Bombus terrestris}$, there was no evidence that cleft claws are important for pollen collection; …
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Entomofauna y patógenos asociados al marañon (anacardiumoccidentale L.) en León, Nicaragua
… más importantes fueron: Coreidae, Cicadellidae, Apidae, Coccinellidae, Crysopidae, Formicidae, y Vespidae, se encontró que las familias que se presentaron con más frecuencia durante la época de crecimiento vegetativo del cultivo fueron: Cicadellidae, Tenebrionidae, Chrysomelidae, Coccinellidae y …
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A Hive Mind: Bounded Rationality and Bees
… robust when we stratify our capture by family (Apidae and non-Apidae) or sociality (solitary and social). In Chapter 4, we quantified bee community health metrics (abundance, richness, and diversity) in soybean plots in Columbia, Missouri, which were either treated with grower standard …
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Annual Variation in Bee Community Structure in the Context of Disturbance (Niagara Region, South-Western Ontario)
… found in eastern North America (Andrenidae, Apidae, Colletidae, Halictidae and Megachilidae). The bee community was characterized by three distinct periods of flight activity over the four years studied (early spring, late spring/early summer, and late summer). The number of bees collected in …
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