02/09/2014
SOME FUN INSECT FACTS !
The Flies are not deaf ! The fly uses its antenna as its ear, which resonates in response to courtship songs generated by wing vibration. The antenna of Drosophila is an asymmetric, flagellar structure composed of three segments [a1 (antennal segment) or scape, a2 or pedicelus, and a3 or funiculus] and a feathery arista extending from the distal-most segment. The arista resonates in the presence of the species-specific courtship song and twists a3 relative to a2. The feather-like arista (antennal segments 4, 5, and 6) extends anterolaterally from a3 and slightly downward. The arista is innervated with three sensilla; these are not physiologically involved in hearing, but rather likely in thermosensation. For hearing, the arista is a component of the mechanical operation of the antenna (Caldwell, 2002). The only known acoustic stimulus to which Drosophila responds is the courtship song, produced by the courting male. The D. melanogaster species-specific 'love song' is composed of pulse and sine components.
Read more about Antenna, auditory apparatus, and sound sensation in Drosophila at http://www.sdbonline.org/sites/fly/aimorph/antennaandhearing.htm http://now.uiowa.edu/2013/08/flys-hearing
COPAL THANK Hector Diaz Albiter , Ranger Roo , Nicola Brannagan , Melissa Glenn AND ALL THE EXPERTS OF ENTOMOLOGY FOR THEIR VALUABLE AND SIGNIFICANT SUGGESTION.
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source: www.domyownpestcontrol.com