
@article {86516,
	title = {Baffling: a condition-dependent alternative mate attraction strategy using self-made tools in tree crickets.},
	journal = {Proc Biol Sci},
	volume = {287},
	year = {2020},
	month = {2020 Dec 23},
	pages = {20202229},
	abstract = {<p>Intense sexual selection in the form of mate choice can facilitate the evolution of different alternative reproductive strategies, which can be condition-dependent. Tree cricket males produce long-distance acoustic signals which are used by conspecific females for mate localization and mate choice. Our study shows that baffling, an acoustic call amplification strategy employed by male tree crickets using self-made tools, is a classic example of a condition-dependent alternative strategy. We show that though most males can baffle, less preferred males, such as smaller and lower-amplitude callers, predominantly use this alternative strategy. Baffling allows these males to increase their call amplitude and advertisement range, which attracts a higher number of females. Baffling also gives these males a mating benefit because females mate for longer durations with them. Our results suggest that the advantage of baffling in terms of gain in the number of sperm cells transferred while mating is primarily limited to less preferred males, thus maintaining the polymorphism of calling strategies in the population. We summarize that baffling is a condition-dependent strategy used by less preferred tree cricket males to obtain mating benefits.</p>
},
	issn = {1471-2954},
	doi = {10.1098/rspb.2020.2229},
	author = {Deb, Rittik and Modak, Sambita and Balakrishnan, Rohini}
}
@article {17516,
	title = {A statistical approach to understanding reproductive isolation in two sympatric species of tree crickets.},
	journal = {J Exp Biol},
	volume = {220},
	year = {2017},
	month = {2017 Apr 01},
	pages = {1222-1232},
	abstract = {<p>In acoustically communicating animals, reproductive isolation between sympatric species is usually maintained through species-specific calls. This requires that the receiver be tuned to the conspecific signal. Mapping the response space of the receiver onto the signal space of the conspecific investigates this tuning. A combinatorial approach to investigating the response space is more informative as the influence on the receiver of the interactions between the features is also elucidated. However, most studies have examined individual preference functions rather than the multivariate response space. We studied the maintenance of reproductive isolation between two sympatric tree cricket species (Oecanthus henryi and Oecanthus indicus) through the temporal features of the calls. Individual response functions were determined experimentally for O. henryi, the results from which were combined in a statistical framework to generate a multivariate quantitative receiver response space. The predicted response was higher for the signals of the conspecific than for signals of the sympatric heterospecific, indicating maintenance of reproductive isolation through songs. The model allows prediction of response to untested combinations of temporal features as well as delineation of the evolutionary constraints on the signal space. The model can also be used to predict the response of O. henryi to other heterospecific signals, making it a useful tool for the study of the evolution and maintenance of reproductive isolation via long-range acoustic signals.</p>
},
	issn = {1477-9145},
	doi = {10.1242/jeb.146852},
	author = {Bhattacharya, Monisha and Isvaran, Kavita and Balakrishnan, Rohini}
}
