scholarly journals Quantitative analysis of harmonic convergence in mosquito auditory interactions

2016 ◽  
Vol 13 (117) ◽  
pp. 20151007 ◽  
Author(s):  
Andrew Aldersley ◽  
Alan Champneys ◽  
Martin Homer ◽  
Daniel Robert
Keyword(s):  
Beat Frequency ◽  
Time Dependent ◽  
Wing Beat ◽  
Acoustic Interaction ◽  
Harmonic Convergence ◽  
Opposite Sex ◽  
Quantitative Identification ◽  
Female Behaviour ◽  
New Evidence ◽  
Active Phenomenon

This article analyses the hearing and behaviour of mosquitoes in the context of inter-individual acoustic interactions. The acoustic interactions of tethered live pairs of Aedes aegypti mosquitoes, from same and opposite sex mosquitoes of the species, are recorded on independent and unique audio channels, together with the response of tethered individual mosquitoes to playbacks of pre-recorded flight tones of lone or paired individuals. A time-dependent representation of each mosquito's non-stationary wing beat frequency signature is constructed, based on Hilbert spectral analysis. A range of algorithmic tools is developed to automatically analyse these data, and used to perform a robust quantitative identification of the ‘harmonic convergence’ phenomenon. The results suggest that harmonic convergence is an active phenomenon, which does not occur by chance. It occurs for live pairs, as well as for lone individuals responding to playback recordings, whether from the same or opposite sex. Male–female behaviour is dominated by frequency convergence at a wider range of harmonic combinations than previously reported, and requires participation from both partners in the duet. New evidence is found to show that male–male interactions are more varied than strict frequency avoidance. Rather, they can be divided into two groups: convergent pairs, typified by tightly bound wing beat frequencies, and divergent pairs, that remain widely spaced in the frequency domain. Overall, the results reveal that mosquito acoustic interaction is a delicate and intricate time-dependent active process that involves both individuals, takes place at many different frequencies, and which merits further enquiry.

Changes in the wing-beat frequency of bees and wasps depending on environmental conditions: a study with optical sensors

Apidologie ◽  
2021 ◽  
Author(s):  
Antonio R. S. Parmezan ◽  
Vinicius M. A. Souza ◽  
Indrė Žliobaitė ◽  
Gustavo E. A. P. A. Batista
Keyword(s):  
Optical Sensors ◽  
Environmental Conditions ◽  
Beat Frequency ◽  
Wing Beat ◽  
Wing Beat Frequency

scholarly journals Evolution of the wave: aerodynamic and aposematic functions of butterfly wing motion

2007 ◽  
Vol 274 (1612) ◽  
pp. 913-917 ◽  
Author(s):  
Robert B Srygley
Keyword(s):  
Beat Frequency ◽  
Warning Signal ◽  
Colour Pattern ◽  
Butterfly Species ◽  
Wing Beat ◽  
Butterfly Wing ◽  
Motion Cues ◽  
Wing Beat Frequency ◽  
Wing Motion ◽  
Heliconius Cydno

Many unpalatable butterfly species use coloration to signal their distastefulness to birds, but motion cues may also be crucial to ward off predatory attacks. In previous research, captive passion-vine butterflies Heliconius mimetic in colour pattern were also mimetic in motion. Here, I investigate whether wing motion changes with the flight demands of different behaviours. If birds select for wing motion as a warning signal, aposematic butterflies should maintain wing motion independently of behavioural context. Members of one mimicry group ( Heliconius cydno and Heliconius sapho ) beat their wings more slowly and their wing strokes were more asymmetric than their sister-species ( Heliconius melpomene and Heliconius erato , respectively), which were members of another mimicry group having a quick and steady wing motion. Within mimicry groups, wing beat frequency declined as its role in generating lift also declined in different behavioural contexts. In contrast, asymmetry of the stroke was not associated with wing beat frequency or behavioural context—strong indication that birds process and store the Fourier motion energy of butterfly wings. Although direct evidence that birds respond to subtle differences in butterfly wing motion is lacking, birds appear to generalize a motion pattern as much as they encounter members of a mimicry group in different behavioural contexts.

scholarly journals GENETIC VARIABILITY OF FLIGHT METABOLISM IN DROSOPHILA MELANOGASTER. I. CHARACTERIZATION OF POWER OUTPUT DURING TETHERED FLIGHT

Genetics ◽  
1981 ◽  
Vol 98 (3) ◽  
pp. 549-564
Author(s):  
James W Curtsinger ◽  
Cathy C Laurie-Ahlberg
Keyword(s):  
Drosophila Melanogaster ◽  
Power Output ◽  
Beat Frequency ◽  
Wing Beat ◽  
Tethered Flight ◽  
Flight Metabolism ◽  
Flight Parameters ◽  
Wing Stroke ◽  
Stroke Amplitude

ABSTRACT The mechanical power imparted to the wings during tethered flight of Drosophila melanogaster is estimated from wing-beat frequency, wing-stroke amplitude and various aspects of wing morphology by applying the steady-state aerodynamics model of insect flight developed by Weis-Fogh (1972, 1973). Wing-beat frequency, the major determinant of power output, is highly correlated with the rate of oxygen consumption. Estimates of power generated during flight should closely reflect rates of ATP production in the flight muscles, since flies do not acquire an oxygen debt or accumulate ATP during flight. In an experiment using 21 chromosome 2 substitution lines, lines were a significant source of variation for all flight parameters measured. Broadsense heritabilities ranged from 0.16 for wing-stroke amplitude to 0.44 for inertial power. The variation among lines is not explained by variation in total body size (i.e., live weight). Line differences in flight parameters are robust with respect to age, ambient temperature and duration of flight. These results indicate that characterization of the power output during tethered flight will provide a sensitive experimental system for detecting the physiological effects of variation in the structure or quantity of the enzymes involved in flight metabolism.

scholarly journals Photography of Trichoptera in flight

Zoosymposia ◽  
2011 ◽  
Vol 5 (1) ◽  
pp. 297-318
Author(s):  
W. Geoff McIlleron ◽  
Ferdinand C. De Moor
Keyword(s):  
South Africa ◽  
Beat Frequency ◽  
Behavioural Ecology ◽  
Wing Beat ◽  
Paper Briefly ◽  
High Quality ◽  
Flying Insects ◽  
Single Lens ◽  
A Site ◽  
Selection Of

Whereas photography of insects at rest is used for a wide variety of purposes, including illustrating publications and aiding their identification, photography of insects in flight is more challenging and little practiced. This paper describes a system that uses a digital single-lens-reflex camera combined with commercial-level flashes (with electronic power settings to give very short exposures) and simple electronics in a rig that can be used to capture high quality images of night-flying insects. With such a rig, hundreds of images of free flying Trichoptera have been obtained. Preliminary observations of night-flying Athripsodes bergensis (Leptoceridae) indicate that this system could be used for studying the mechanics of flight, wing beat frequency, aerodynamics, flying speed, aerial activity, and behavioural ecology of night-flying insects in their natural environment.      This paper briefly describes the technique as applied at a site on the banks of the Groot River in the southern Cape region of South Africa between October 2008 and April 2009 and presents a selection of the images obtained.

Nasal Mucociliary Transport: New Evidence for a Key Role of Ciliary Beat Frequency

2002 ◽  
Vol 112 (3) ◽  
pp. 570-573 ◽  
Author(s):  
Wilbert M. Boek ◽  
Kees Graamans ◽  
Hanny Natzijl ◽  
Peter P. van Rijk ◽  
Egbert H. Huizing
Keyword(s):  
Beat Frequency ◽  
Ciliary Beat Frequency ◽  
Mucociliary Transport ◽  
New Evidence ◽  
Ciliary Beat

Automated electronic approaches for detecting disease vectors mosquitoes through the wing-beat frequency

2019 ◽  
Vol 217 ◽  
pp. 767-775 ◽  
Author(s):  
Diego A.A. Santos ◽  
Joel J.P.C. Rodrigues ◽  
Vasco Furtado ◽  
Kashif Saleem ◽  
Valery Korotaev
Keyword(s):  
Beat Frequency ◽  
Disease Vectors ◽  
Wing Beat ◽  
Wing Beat Frequency

scholarly journals Insect wing-beat frequency automatic extraction and experimental verification with a Ku-band insect radar system

2019 ◽  
Vol 2019 (21) ◽  
pp. 7973-7976
Author(s):  
Tianran Zhang ◽  
XiangRong Liu ◽  
Cheng Hu ◽  
Rui Wang ◽  
Changjiang Liu ◽  
...  
Keyword(s):  
Experimental Verification ◽  
Beat Frequency ◽  
Radar System ◽  
Automatic Extraction ◽  
Wing Beat ◽  
Insect Wing ◽  
Wing Beat Frequency ◽  
Ku Band

Time-Dependent Nuclear Decay Parameters: New Evidence for New Forces?

2009 ◽  
Vol 145 (3-4) ◽  
pp. 285-335 ◽  
Author(s):  
E. Fischbach ◽  
J. B. Buncher ◽  
J. T. Gruenwald ◽  
J. H. Jenkins ◽  
D. E. Krause ◽  
...  
Keyword(s):  
Time Dependent ◽  
Nuclear Decay ◽  
Decay Parameters ◽  
New Evidence

2A2-B04 Toward a Hovering Robot with Wings : Wing Beat Frequency and Electric Power Necessary for Float

2007 ◽  
Vol 2007 (0) ◽  
pp. _2A2-B04_1-_2A2-B04_2
Author(s):  
Koji SHIBUYA ◽  
Kei HASEGAWA ◽  
Ryu YONEDA ◽  
Yoichi SHIOMI ◽  
Tetsuya TSUJIKAMI
Keyword(s):  
Electric Power ◽  
Beat Frequency ◽  
Wing Beat ◽  
Wing Beat Frequency
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