scholarly journals INDUCED HOST ODOR ATTRACTION IN THE PEA CRABPINNOTHERES MACULATUS

1980 ◽  
Vol 158 (1) ◽  
pp. 26-33 ◽  
Author(s):  
CHARLES D. DERBY ◽  
JELLE ATEMA
Keyword(s):  
Host Odor ◽  
Odor Attraction

Enhanced Immune Function Decreases Odor Attraction of Male Laboratory Mice

2001 ◽  
pp. 249-253
Author(s):  
Katherine Litvinova ◽  
Irene Kolosova ◽  
Viktoria Mak ◽  
Mikhail Moshkin
Keyword(s):  
Immune Function ◽  
Laboratory Mice ◽  
Odor Attraction

INSECT AND HOST ODORS IN THE AGGREGATION OF THE WESTERN PINE BEETLE

1969 ◽  
Vol 101 (2) ◽  
pp. 113-117 ◽  
Author(s):  
J. P. Vité ◽  
G. B. Pitman
Keyword(s):  
Sex Ratio ◽  
Pinus Ponderosa ◽  
Dendroctonus Ponderosae ◽  
Insect Pheromone ◽  
Dendroctonus Brevicomis ◽  
Western Pine Beetle ◽  
Pine Beetle ◽  
Host Odor ◽  
Host Odors ◽  
Per Se

AbstractDendroctonus brevicomis Lec. responded in flight to combinations of insect- and host-produced volatiles. Emergent female beetles crushed at −70 °C, as well as synthetic exo-7-ethyl-5-methyl-6, 8-dioxabicyclo [3.2.1] octane (“brevicomin”) attracted both sexes of the western pine beetle when offered with oleoresin freshly tapped from the host, Pinus ponderosa Laws. Offered separately, these materials were inactive. Crushed emergent Dendroctonus ponderosae Hopk. males per se, however, attracted flying D. brevicomis in appreciable numbers. Dominance of either host odor or insect pheromone appeared to govern the sex ratio of the responding insects.

scholarly journals Elementary sensory-motor transformations underlying olfactory navigation in walking fruit-flies

eLife ◽  
2018 ◽  
Vol 7 ◽  
Author(s):  
Efrén Álvarez-Salvado ◽  
Angela M Licata ◽  
Erin G Connor ◽  
Margaret K McHugh ◽  
Benjamin MN King ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Drosophila Melanogaster ◽  
Turbulent Boundary Layer ◽  
Neural Circuits ◽  
Neural Function ◽  
Olfactory Behavior ◽  
Sensory Stimuli ◽  
Sensory Motor ◽  
Odor Attraction ◽  
High Throughput Assay

Odor attraction in walking Drosophila melanogaster is commonly used to relate neural function to behavior, but the algorithms underlying attraction are unclear. Here, we develop a high-throughput assay to measure olfactory behavior in response to well-controlled sensory stimuli. We show that odor evokes two behaviors: an upwind run during odor (ON response), and a local search at odor offset (OFF response). Wind orientation requires antennal mechanoreceptors, but search is driven solely by odor. Using dynamic odor stimuli, we measure the dependence of these two behaviors on odor intensity and history. Based on these data, we develop a navigation model that recapitulates the behavior of flies in our apparatus, and generates realistic trajectories when run in a turbulent boundary layer plume. The ability to parse olfactory navigation into quantifiable elementary sensori-motor transformations provides a foundation for dissecting neural circuits that govern olfactory behavior.

scholarly journals Foraging Behavior of the Blue Morpho and Other Tropical Butterflies: The Chemical and Electrophysiological Basis of Olfactory Preferences and the Role of Color

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Alexandra Sourakov ◽  
Adrian Duehl ◽  
Andrei Sourakov
Keyword(s):  
Butyl Acetate ◽  
Signal To Noise Ratio ◽  
Signal To Noise ◽  
Fermentation Products ◽  
Ethyl Butanoate ◽  
Electrophysiological Responses ◽  
Aliphatic Esters ◽  
Olfactory Preferences ◽  
Odor Attraction

Inside a live butterfly exhibit, we conducted bioassays to determine whether the presence of color would facilitate the location of attractants by the butterflies. It was found that color facilitated odor attraction in some species that feed on flowers (Parthenos silvia, Heraclides thoas, Dryas julia, andIdea leuconoe), but not in the exclusively fruit-feeding species, such asMorpho helenor, hence demonstrating that species with different natural diets use different foraging cues. Green, ripe, and fermented bananas were evaluated for their attractiveness to butterflies together with honey and mangoes. The fermented bananas were determined to be the most attractive bait, and the electrophysiological responses to their volatiles were studied inMorpho helenorandCaligo telamonius. During GC-EAD evaluation, fifteen different aliphatic esters, such as isobutyl isobutyrate, butyl acetate, ethyl butanoate, and butyl butanoate (both fermentation products and fruit semiochemicals) were shown to be detected by the butterflies’ sensory apparatus located in the forelegs, midlegs, proboscis, labial palpi, and antennae. Legs, proboscis, and antennae ofMorpho helenorandCaligo telamoniusshowed similar sensitivity, reacting to 11 chemicals, while labial palpi had a lower signal-to-noise ratio and responded to seven chemicals, only three of which produced responses in other organs.

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