@article {53132,
	title = {Aggression in male conocephaline grasshoppers (tettigoniidae)},
	journal = {Animal Behaviour},
	volume = {19},
	year = {1971},
	month = {Jan-02-1971},
	pages = {132 - 137},
	abstract = {<p>Fighting occurs under field and laboratory conditions between conspecific males of the long horn grasshoppers O. gladiator, O. vulgare and C. nigropleurum. Approaches of 90 to 180 cm by Orchelimum males culminated in venter-to-venter grappling. Such fights usually ended in the silent withdrawal of one combatant, while the other initiated steady song from the encounter site. Only singing males were approached. Stridulation appears both to trigger the approach and to serve as a navigational aid during its excution. An area is maintained around dominating males that is free of conspecific signers.</p>
},
	issn = {00033472},
	doi = {10.1016/S0003-3472(71)80147-1},
	url = {http://linkinghub.elsevier.com/retrieve/pii/S0003347271801471},
	author = {Glenn K. Morris}
}
@article {17235,
	title = {Song as a possible isolating mechanism in the genus Homorocoryphus (Tettigonioidea, Orthoptera)},
	journal = {Animal Behaviour},
	volume = {19},
	year = {1971},
	month = {Jan-05-1971},
	pages = {390 - 397},
	abstract = {<p>The songs of four species of the genus Homorocoryphus have been recorded in the field in the central region of Uganda. The songs differed in their syllable repetition rates. The effect of artificially produced songs, bearing a close resemblance to the natural song but with a variable repetition rate, has been tested on the activity levels of virgin females of two of the species. It was found that the females responded to the species specific repetition rate. Songs of each of the four species were tested against females of the species H. flavovirens, where a species specific response was established. The implications of the syllable repetition rate and the carrier frequency in this genus was discussed and a possible role in reproductive isolation was postulated.</p>
},
	issn = {00033472},
	doi = {10.1016/S0003-3472(71)80022-2},
	url = {http://linkinghub.elsevier.com/retrieve/pii/S0003347271800222},
	author = {Winston J. Bailey and Robinson, David}
}
