A5070693086- Plant and animal studies
- Insect and Arachnid Ecology and Behavior
- Insect and Pesticide Research
- Neurobiology and Insect Physiology Research
- Olfactory and Sensory Function Studies
- Insect Pheromone Research and Control
- Physiological and biochemical adaptations
- Advanced Chemical Sensor Technologies
- Insect Utilization and Effects
- Neurology and Historical Studies
- Neuroscience, Education and Cognitive Function
Georgia Institute of Technology
2021
State Street (United States)
2021
Carl Hayden Bee Research Center
2017-2020
United States Department of Agriculture
2020
Agricultural Research Service
2018-2020
University of Arizona
2009-2017
Free-ranging herbivores have yearly life cycles that generate dynamic resource needs. Honey bee colonies also a cycle might nutritional requirements differ between times of brood rearing and colony expansion in the spring population contraction preparation for overwintering fall. To test this, we analyzed polyfloral mixes fall pollens to determine if nutrient composition differed with season. Next, fed both types seasonal bees reared We compared development food glands (i.e., hypopharyngeal...
Abstract Background An animal navigating to an unseen odor source must accurately resolve the spatiotemporal distribution of that stimulus in order express appropriate upwind flight behavior. Intermittency natural plumes, caused by air turbulence, is critically important for many insects, including hawkmoth, Manduca sexta , odor-modulated search behavior source. When a moth's antennae receive intermittent stimulation, projection neurons (PNs) primary olfactory centers (the antennal lobes),...
The need to detect and process sensory cues varies in different behavioral contexts. Plasticity coding can be achieved by the context-specific release of neuromodulators restricted brain areas. context aversion triggers dopamine insect brain, yet effects on are unknown. In this study, we characterize morphology dopaminergic neurons that innervate each antennal lobes (ALs; first synaptic neuropils olfactory system) moth Manduca sexta demonstrate with electrophysiology enhances odor-evoked...
Nosema sp. is an internal parasite of the honey bee, Apis mellifera, and one leading contributors to colony losses worldwide. This found in bee midgut, has profound consequences on host's physiology. impairs foraging performance bees, yet, it unclear whether this affects bee's neurobiology. In study, we examine odor learning memory brains parasitized bees show differences amino acids biogenic amines. We took newly emerged fed them with a ceranae. At approximate nurse forager ages, employed...
Honey bee colonies have a yearly cycle that is supported nutritionally by the seasonal progression of flowering plants. In spring, grow rearing brood, but in fall, brood declines preparation for overwintering. Depending on where are located, can differ especially overwintering activities. temperate climates Europe and North America, reduce or end fall while warmer bees rear forage throughout year. To test hypothesis nutrients available pollens honey responses to them we analyzed pollen...
Pollen nutrition is necessary for proper growth and development of adult honey bees. Yet, it unclear how pollen affects the bee brain behavior. We investigated whether amino acids in brains caged, nurse-aged bees, what behavioral consequences might be. also tested parasitic stress altered this relationship by analyzing bees infected with prevalent stressor, Nosema ceranae. measured levels 18 individual using Gas Chromatography – Mass Spectrometry at two different ages (Day 7 Day 11). then...
Nitric oxide (NO) is thought to play an important neuromodulatory role in the olfactory system. This modulation has been suggested be particularly for learning and memory antennal lobe (the primary network invertebrates). We are using hawkmoth, Manduca sexta, further investigate of NO memory. Recent findings suggest that affects short-term traces concentration fluctuates with light cycle. gives rise hypothesis may involved connection between circadian rhythms. In this study, we explore...
Abstract Varroa destructor is an ectoparasitic mite of immature and adult honey bees that can transmit several single-stranded RNA viruses to its host. reproduce in brood cells, populations increase as colonies produce spring summer. Mite numbers also sharply rise, particularly the fall, by migration varroa into hives on foragers. Colonies with high levels often die over winter. Feeding pollen might keep virus low improve survival because positive effects immunity colony growth. We compared...
Summary Nitric oxide (NO) is thought to play an important neuromodulatory role in olfaction. We are using the hawkmoth Manduca sexta investigate function of NO signaling antennal lobe (AL; primary olfactory network invertebrates). have found previously that present at baseline levels, dramatically increases response odor stimulation, and alters electrophysiology AL neurons. It unclear, however, how these effects contribute common features systems such as learning memory, detection,...
Honey bees (Apis mellifera) (Hymenoptera: Apidae) are social insects that have evolved a coordinated defensive response to ensure colony survival. Their nests may contain valuable resources such as pollen and nectar attractive range of insect mammalian intruders need protecting. With sufficient provocation, honey will mobilize sting intruders, who likely incur additional stings. To inspect manage their colonies, beekeepers apply smoke decrease the likelihood being stung. The use is...
“More Virulent than Disease” is a chapter from the historical novel, Painted Butterflies. This excerpt written through voice of Santiago Ramon y Cajal (1852 – 1934), Nobel Prize Winner, who credited with being “The Father Modern Neuroscience.” In this piece, in his mid-twenties recounting four years since return Separatist War Cuba (Ten Years War), where he served as head physician remote jungle hospital. Here, ruminates about recovery illnesses which acquired tropics, barely survived. His...