... investigated the mechanisms underlying detection of frog calls by a mosquito species specialized on eavesdropping on anuran mating signals: Uranotaenia lowii . Behavioral, biomechanical and neurophysiological analyses revealed that the antenna of this frog-biting species can detect frog calls by relying...

.... Colonies were exposed to optimal (25°C) or stressful (33°C) temperatures. We then measured the body size, wing size, antenna and tongue length, as well as the allometry between these traits. We found that workers were smaller and the antennae of both castes were reduced at the higher temperature. However...

... of female crickets on a trackball during lateral antennal stimulation, which was achieved by moving a wire mesh transiently into reach of one antenna. During antennal stimulation alone, females reduced their walking speed, oriented toward the object and actively explored it with antennal movements...

... that are located on each side of the head's dorsal midline. They are situated between the frons and the vertex in an area that is dorsal to the antenna but ventral to the medial-most region of the compound eyes. Antennal APOs contract in synchrony at 1 Hz, which is 45% slower than the heart. By means of histology...

... 7 2010 © 2010. 2010 Drosophila flight olfaction odors olfactory receptor neurons antenna insect anemotaxis Johnston's organ Drosophila melanogaster is a useful model organism for studying olfaction, in part because it offers powerful genetic tools for manipulating...

... with obstacles and they suggest that sensory information about the presence and configuration of obstacles is used to make choices, at very short latencies, about how to respond to obstructions. A good example is that cockroaches moving along a wall can use an antenna to measure the distance between the body...

...-mail: [email protected] ) 6 7 2006 © The Company of Biologists Limited 2006 2006 insect olfaction pheromone transduction moth cyclic nucleotide antenna circadian difference Males of the nocturnal hawkmoth Manduca sexta detect the pulsatile release by female moths...

...Heidi Pye Henninger; Winsor H. Watson, III SUMMARY American lobsters produce carapace vibrations, which also lead to waterborne acoustic signals, by simultaneously contracting the antagonistic remotor and promotor muscles located at the base of the second antenna. These vibrations have a mean...

...Jiro Okada; Yoshihiro Toh SUMMARY To characterize the spatio-temporal patterns of antennal behavior in insects, the voluntary movement of both right and left antennae was examined in the cockroach Periplaneta americana . The position of the tip of the antenna (flagellum) is controlled by two mobile...

... olfaction insect antenna food odour receptor neurone ligand odour coding Research in insect olfaction has produced valuable insights into neural processes involved in sensory coding and processing. The fruitfly Drosophila melanogaster has emerged as a highly suitable model organism...

.... the conversion of acoustic energy into mechanical vibrations and the subsequent transmission of vibrations to the auditory receptors in the base of the antenna. Examination of the mechanical responses of the antennal structures established that the distal antennal parts (the funiculus and the arista) together...

...J. Okada; Y. Toh SUMMARY Arthropods have hair plates that are clusters of mechanosensitive hairs, usually positioned close to joints, which function as proprioceptors for joint movement. We investigated how angular movements of the antenna of the cockroach ( Periplaneta americana ) are coded...

... activity was reduced during voluntary antennal movements. The reduction in activity occurred even after de-efferentation of the antenna, indicating that it had a central origin. Although we do not have experimental evidence for behavioural roles for the descending antennal mechanosensory interneurons...

... in the leakiness of the feathery antennae to air flow occurs at the air velocities produced by fanning. * e-mail: [email protected] 27 06 2000 07 09 2000 © 2000 by Company of Biologists 2000 low Reynolds number olfaction insect antenna biomechanics flow wing Lepidoptera...

... are resonantly tuned mechanical systems that move as simple forced damped harmonic oscillators when acoustically stimulated. The best frequency of the female antenna is around 230 Hz; that of the male is around 380 Hz, which corresponds approximately to the fundamental frequency of female flight sounds...

... keeping the body close to the wall. Sensory inputs from the flagellum of the antenna, and not from its base, appear to evoke the turns in response to wall projections. These flagellar inputs appear to report the position along the antenna of its contact with the wall and/or the position of the consequent...

... at the base of the antenna is not necessary. The antennal flagellum is a multimodal sensory organ, which contains both mechanoreceptors and chemoreceptors. In order to dissect the roles of different flagellar modalities, we treated antennae with zinc sulphate. This suppressed a well-characterized contact...

... effects low Reynolds number olfaction arthropod biomechanics antenna filter feeding Many animals from different phyla use structures bearing arrays of hairs to perform a variety of important functions, such as olfaction, gas exchange, suspension feeding, locomotion and ventilation ( Fig. 1...

... not been demonstrated. The kinematic data showed that when a pulse of ultrasound was presented to one side of the animal (1) the contralateral metathoracic leg abducted and elevated, while the ipsilateral leg remained in place, (2) both antennae swung laterally, but the contralateral antenna moved farther...

...Frank Saager; Michael Gewecke ABSTRACT The control of horizontal motion of the locust antenna was studied by behavioural and electrophysiological investigations. Deflection of the flagellum and the pedicel induced by air currents or a needle were used as mechanical stimuli. The forces...