Results 51 to 60 of about 4,463 (201)
Wide-field motion tuning in nocturnal hawkmoths [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2009 Nocturnal hawkmoths are known for impressive visually guided behaviours in dim light, such as hovering while feeding from nectar-bearing flowers. This requires tight visual feedback to estimate and counter relative motion. Discrimination of low velocities, as required for stable hovering flight, is fundamentally limited by spatial resolution, yet in ...
Theobald, J., Warrant, E., O'Carroll, D.
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Flower tracking in hawkmoths: behavior and energetics [PDF]
Journal of Experimental Biology, 2007 SUMMARY As hovering feeders, hawkmoths cope with flower motions by tracking those motions to maintain contact with the nectary. This study examined the tracking, feeding and energetic performance of Manduca sexta feeding from flowers moving at varied frequencies and in different directions.
Jordanna D H, Sprayberry +1 more
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InsectsHere, the taxonomy of the genus Rhagastis Rothschild & Jordan, 1903 (Lepidoptera, Sphingidae, Macroglossinae, Macroglossini) from China is revised based on differences in wing morphology, male and female genitalia, and the phylogenetic relationship of ...
Zhuo-Heng Jiang +6 more
doaj +1 more source
Generalist‐pollinated Arabis alpina exhibits floral scent variation at multiple scales
Nordic Journal of Botany, EarlyView.Plants that depend on animals for reproduction often use complex floral traits to attract pollinators. Floral scent is recognized as part of the pollinator attraction module and can be shaped by plant‐pollinator interactions. In recent decades, research has started to reveal the dynamic properties of floral scent, identifying patterns of spatial and ...
Hanna Thosteman +5 more
wiley +1 more source
Octopamine regulates antennal sensory neurons via daytime-dependent changes in cAMP and IP3 levels in the hawkmoth Manduca sexta. [PDF]
PLoS ONE, 2015 The biogenic amine octopamine (OA) mediates reward signals in olfactory learning and memory as well as circadian rhythms of sleep and activity. In the crepuscular hawkmoth Manduca sexta, OA changed pheromone detection thresholds daytime-dependently ...
Thomas Schendzielorz +3 more
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Spatial odor discrimination in the hawkmoth, Manduca sexta (L.)
Biology Open, 2021 Flying insects track turbulent odor plumes to find mates, food and egg-laying sites. To maintain contact with the plume, insects are thought to adapt their flight control according to the distribution of odor in the plume using the timing of odor onsets ...
Kalyanasundaram Parthasarathy +1 more
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Automating image analysis by annotating landmarks with deep neural networks [PDF]
, 2017 Image and video analysis is often a crucial step in the study of animal behavior and kinematics. Often these analyses require that the position of one or more animal landmarks are annotated (marked) in numerous images. The process of annotating landmarks
Betke, Margrit +3 more
core +1 more source
Structural Analysis of a Dragonfly Wing [PDF]
, 2010 Dragonfly wings are highly corrugated, which increases the stiffness and strength of the wing significantly, and results in a lightweight structure with good aerodynamic performance.
Jongerius, S.R., Lentink, D.
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Colour Vision in Diurnal and Nocturnal Hawkmoths [PDF]
Integrative and Comparative Biology, 2003 Diurnal and nocturnal hawkmoths (Sphingidae, Lepidoptera) have three spectral types of receptor sensitive to ultraviolet, blue and green light. As avid flower visitors and pollinators, they use olfactory and visual cues to find and recognise flowers.
Almut, Kelber +2 more
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The predatory behavior of ants: an impressive panoply of morphological adaptations
Insect Science, EarlyView.This review focuses on predation in ants, showing the wide diversity of cases from solitary foraging to group hunting tactics, as well as the evolution of mandible shape frequently adapted to capture specific prey. Although most ants are generalist feeders, finding their sugary substances directly on plants or indirectly via sap‐sucking insects, some ...
Alain Dejean +6 more
wiley +1 more source