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.
Results
Showing 1 to 20 of 26 for “"Apis mellifera L."”.
-
Sublethal dosage effects of carbaryl on honey bee (Apis mellifera (L.)) colonies
… effects of carbaryl were studied in honey bee (Apis mellifera L.) colonies. Carbaryl was fed to colonies during a 14-day period in a 0.95 M sucrose solution. Carbaryl dosages were based on 0.0036, 0.0178, and 0.0356 ug/bee/day, and concentrations approximated 0.09, 0.44, and 0.86 ppm, …
-
Räumliche und zeitliche Expressionsmuster sowie Funktionen der Serotonin-Rezeptor-Subtypen der Honigbiene, Apis mellifera L., 1758
… gekoppelten Rezeptoren (GPCRs). Die Honigbiene Apis mellifera bietet unter anderem aufgrund ihrer eusozialen Lebensweise vielfältige Ansatzpunkte zur Erforschung der Funktionen des serotonergen Systems in Insekten. Bei A. mellifera wurden bereits vier 5-HT-Rezeptor-Subtypen beschrieben und …
-
The role of ATP-sensitive inwardly rectifying potassium channels in the honey bee (Apis mellifera L.)
Honey bees are economically important pollinators of a wide variety of crops that have attracted the attention of both researchers and the public alike due to unusual declines in the numbers of managed colonies in some parts of the world. Viral infections are thought to be a significant factor …
-
The Effects of Miticides on the Reproductive Physiology of Honey Bee (Apis mellifera L.) Queens and Drones
… The first study examined the effects of Apistan (fluvalinate), Check Mite+ (coumaphos), and Apilife VAR (74% thymol) on sperm production and viability in drones. Drones from colonies treated with each miticide were collected at sexual maturity. Sperm production was determined by counting …
-
A Molecular Diagnostic Survey of Pathogens and Parasites of Honey Bees, Apis mellifera L., From Arkansas and Oklahoma
… and viability of colonies of the honey bee, Apis mellifera, in the United States have fluctuated dramatically over the past decade. This poses a substantial threat to agricultural production in this country. Currently, no single factor has been identified for this decline. Rather, it has been …
-
The Effects of Pesticide Exposures on the Nutritional and Immune Health of the Honey Bee, Apis mellifera L.
The honey bee is a widely managed crop pollinator that provides the agricultural industry with the sustainability and economic viability needed to satisfy the food and fiber needs of our society. Excessive use of agrochemicals such as the acaricides coumaphos and tau-fluvalinate, and the fungicide, …
-
Exposure of honeybees (Apis mellifera L.) and other hymenoptera pollinators to different Bacillus thuringiensis based biopesticides in laboratory controlled trials
… dal punto di vista agro-economico troviamo: Apis mellifera, Linnaeus 1758, nota specie eusociale con organizzazione in caste, Osmia cornuta, Latreille 1805 e O. rufa, Linnaeus 1758, due specie di api solitarie che nidificano in forma gregaria di proficuo e agevole impiego su diverse colture …
-
Causes and consequences of variation in the nutrition and endemic microflora of food stores in managed honey bees (Apis mellifera L.)
Honey bees are pollinators, accounting for around 90% of commercial pollination of animal-pollinated plants and approximately 35% of global food production. Global populations of honey bees have declined significantly recently with heavy losses attributed to Colony Collapse Disorder, pesticides, …
-
Development of a Precision Mite Management Program for the Control of the Ectoparasite Varroa destructor in Hives of Apis mellifera L.
The European honey bee, Apis mellifera, is an important pollinator of horticultural and agricultural field crops, providing ≈ 90% of all commercial pollination services (Genersch et al. 2010). The recent rise in colony loss due to Colony Collapse Disorder (CCD) has been a source of concern for both …
-
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 …
-
The costs and benefits of resistance and tolerance behaviors against Varroa mite (Varroa destructor Anderson and Trueman) in honey bee (Apis mellifera L.)
… (with co-infections of N. ceranae and N. apis) suppressed the effectiveness of mite removal behavior within selected bees relative to unselected bees. N. ceranae was more abundant than N. apis. Bees with greater mite removal capacities had higher costs associated with varroa-resistance as …
-
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
-
Waggle Dance Your Own Way: Individuality, Network Structure, and an Herbicide Stressor in Recruitment, Foraging, and Neurobiology in the Honey Bee (Apis mellifera L.)
The waggle dance of the honey bee (Apis mellifera L.) is perhaps the most celebrated animal communication behavior. With a waggle dance, a forager bee who has discovered a profitable resource on the landscape, usually floral nectar or pollen, can inform her nestmates of its location and recruit …
-
Methods for controlling two European Honey bee (Apis mellifera L.) pests: Varroa mites (Varroa destructor, Anderson and Trueman) And Small hive beetles (Aethina tumida)
… the last five decades, European Honey bee (Apis mellifera) colonies have been heavily damaged by invading Varroa mites (Varroa destructor), and, more recently, small hive beetles (Aethina tumida). These pests infest A. mellifera colonies throughout Virginia, with V. destructor feeding upon …
-
Biologia floral e eficiência polinizadora das abelhas Apis mellifera L. (campo aberto) e Melipona quadrifasciata Lep. (ambiente protegido) na cultura da pimenta malagueta (Capsicum frutescens L.) em Minas Gerais, Brasil
… e avaliar a eficiência das abelhas melífera (Apis mellifera L.) e mandaçaia (Melipona quadrifasciata Lep.) na polinização de C. frutescens, em campo aberto e em ambiente protegido, respectivamente. O primeiro estudo foi realizado em área aberta, no período de outubro a dezembro de 2006, no …
-
Investigating the morphological adaptations and fungal associations of the small hive beetle, Aethina tumida Murray (Coleoptera: Nitidulidae)
… facultative hive pest of the western 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 …
-
CHARACTERIZING ECDYSTEROID TITER PROFILES AND THE FUNCTIONAL ROLE OF ECDYSTEROIDS IN ADULT WORKER HONEY BEES (APIS MELLIFERA)
… ecdysteroid profiles of adult worker honey bees (Apis mellifera L.). Ecdysteroids have been thought to play little role in the physiology of adult worker honey bees outside of reproduction because little was known about ecdysteroid production across the lifespan of individual workers. The data …
Page 1 of 2