منابع مشابه
Jumping performance of froghopper insects.
The kinematics of jumping in froghopper insects were analysed from high speed sequences of images captured at rates up to 8000 s(-1). In a jump, the attitude of the body is set by the front and middle legs, and the propulsion is delivered by rapid and synchronous movements of the hind legs that are 1.5 times longer than the other legs, but are only about half the length of the body and represen...
متن کاملSHORT COMMUNICATION Bird predation on insects reduces damage to the foliage of cocoa trees (Theobroma cacao) in western Panama
In the Neotropics, crops that are grown in agroforestry systems with shade trees support high levels of bird diversity compared with crops grown without shade (Estrada & Coates-Estrada 2005, Faria et al. 2006). Several experiments in shaded coffee farms have explored how insectivorous birds reduce herbivore numbers and their damage to plants and have simultaneously approached ecological questio...
متن کاملNeural control and coordination of jumping in froghopper insects.
The thrust for jumping in froghopper insects is produced by a rapid, synchronous depression of both hind legs generated by huge, multipartite trochanteral depressor muscles in the thorax and smaller levator muscles in the coxae. A three-phase motor pattern activates these muscles in jumping. First, a levation phase lasts a few hundred milliseconds, in which a burst of spikes in the trochanteral...
متن کاملThe mechanics of azimuth control in jumping by froghopper insects.
Many animals move so fast that there is no time for sensory feedback to correct possible errors. The biomechanics of the limbs participating in such movements appear to be configured to simplify neural control. To test this general principle, we analysed how froghopper insects control the azimuth direction of their rapid jumps, using high speed video of the natural movements and modelling to un...
متن کاملForaging ecology of howler monkeys in a cacao (Theobroma cacao) plantation in Comalcalco, Mexico.
Recent evidence indicates that primate populations may persist in neotropical fragmented landscapes by using arboreal agroecosystems, which may provide temporary habitats, increased areas of vegetation, and connectivity, among other benefits. However, limited data are available on how primates are able to sustain themselves in such manmade habitats. We report the results of a 9-month-long inves...
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ژورنال
عنوان ژورنال: Bulletin of Entomological Research
سال: 1922
ISSN: 0007-4853,1475-2670
DOI: 10.1017/s0007485300045351