| directionality in the mechanical response to substrate vibration in a treehopper (hemiptera: membracidae: umbonia crassicornis). | the use of substrate vibrations in communication and predator-prey interactions is widespread in arthropods. in many contexts, localization of the vibration source plays an important role. for small species on solid substrates, time and amplitude differences between receptors in different legs may be extremely small, and the mechanisms of vibration localization are unclear. here we ask whether directional information is contained in the mechanical response of an insect's body to substrate vibrat ... | 2014 | 11016785 |
| a bending wave simulator for investigating directional vibration sensing in insects. | substrate vibrations are important in social and ecological interactions for many insects and other arthropods. localization cues include time and amplitude differences among an array of vibration detectors. however, for small species these cues are greatly reduced, and localization mechanisms remain unclear. here we describe a method of simulating the vibrational environment that facilitates investigation of localization mechanisms in small species. our model species was the treehopper umbonia ... | 2001 | 11508982 |
| negative feedback from maternal signals reduces false alarms by collectively signalling offspring. | within animal groups, individuals can learn of a predator's approach by attending to the behaviour of others. this use of social information increases an individual's perceptual range, but can also lead to the propagation of false alarms. error copying is especially likely in species that signal collectively, because the coordination required for collective displays relies heavily on social information. recent evidence suggests that collective behaviour in animals is, in part, regulated by negat ... | 2012 | 22787019 |
| motor and mechanical bases of the courtship call of the male treehopper umbonia crassicornis. | this study is a physiological, anatomical and biophysical analysis of how plant-borne vibrational signals are produced by the treehopper umbonia crassicornis during courtship, males and females engage in a vibrational duet, with each producing a characteristic call. for males, this consists of a frequency-modulated tonal signal which is accompanied by rhythmic broad-band clicks. although previous studies have described these complex signals in detail, little is known about how they are produced. ... | 2017 | 28302869 |