02434nas a2200241   4500008004100000245011600041210006900157260001600226300001400242490000800256520148900264653002001753653001801773653001401791653001601805653002301821653001801844653002201862653002201884100002201906700002101928856024301949       2010                        eng d00aLong-distance signals influence assessment of close range mating displays in the field cricket, Gryllus integer0 aLongdistance signals influence assessment of close range mating   cJan-08-2010  a856 - 8650 v1003 a<p>Male sexual displays often include components detected across long distances, and those perceived only at close range. Understanding what information females gain from each component of a complex display and how they use these signals to make decisions are questions of major interest in sexual selection research. We evaluated content-based hypotheses (&lsquo;redundant signals&rsquo; and &lsquo;multiple messages&rsquo;) for the courtship displays of field crickets (Gryllus integer) by measuring female responses to males&rsquo; long-distance calling song (calls) and close-range chemical cues. Females&rsquo; responses to a male&rsquo;s calls and chemical cues were uncorrelated, supporting the &lsquo;multiple messages&rsquo; hypothesis. We also tested the &lsquo;inter-signal interaction&rsquo; hypothesis by investigating how long-distance calls influence evaluation of close-range courtship. The relationship between long- and close-range signals was complex and conditional: females accepted close-range courtship more quickly after exposure to attractive calling song than they did after exposure to either unattractive calling song or silence, and unattractive calls were no more or less effective than silence. This inter-signal interaction could affect our understanding of mate choice in species with multiple mating signals because it implies that females may save time and energy by not assessing the close-range signals of attractive long-distance signalers.</p>
10aacoustic signal10achemical cues10acourtship10amate choice10amultimodal signals10amultiple cues10amultiple messages10aredundant signals1 aLeonard, Anne, S.1 aHedrick, Ann, V.  uhttp://blackwell-synergy.com/doi/abs/10.1111/bij.2010.100.issue-4https://academic.oup.com/biolinnean/article-lookup/doi/10.1111/j.1095-8312.2010.01472.xhttps://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8312.2010.01472.x02583nas a2200277   4500008004100000022001300041245012600054210006900180260001600249300001400265490000700279520171500286653002002001653001902021653002502040653001202065653001302077653001802090653002202108653002102130653002102151653002102172100002302193700002302216856006602239       2011                        eng d  a0003347200aEffects of juvenile and adult condition on long-distance call components in the Jamaican field cricket, Gryllus assimilis0 aEffects of juvenile and adult condition on longdistance call com  cJan-01-2011  a135 - 1440 v813 a<p>Complex signals may arise through either content- or efficacy-based selection. Content-based signals are thought to evolve because of the information content they provide to the receiver. Such signals may function as multiple messages, each relaying different information or types of information. For example, some signals or signal components may indicate different aspects of condition, or condition at different life stages (quality signals), while others relay information on signaller location, or function in species recognition. Or they may act as redundant signals of overall condition, or as backup signals of the same aspect of condition. Efficacy-based signals are proposed to evolve because of the way in which they influence the production, transmission, reception or processing of the signal. We manipulated juvenile and adult condition in male Jamaican field crickets, Gryllus assimilis, to test whether changes in components of the male&rsquo;s long-distance acoustic mate attraction signal were consistent with content- or efficacy-based selection. Several call components exhibited condition-dependence, and may be under content-based selection. Interpulse duration, pulse rate and chirp duration appeared to honestly signal juvenile condition, while dominant frequency appeared to signal adult condition. Thus, these signal components appeared to be acting as multiple messages of quality. Pulse number, interchirp duration and chirp rate were highly stereotyped and probably function in species recognition. Call number increased with decreasing condition and was likely under efficacy-based selection. No call components appeared to have the potential to act as redundant signals.</p>
10aacoustic signal10acomplex signal10acondition-dependence10acontent10aefficacy10aField cricket10amultiple messages10amultiple signals10aredundant signal10asexual selection1 aWhattam, Emily, M.1 aBertram, Susan, M.  uhttp://linkinghub.elsevier.com/retrieve/pii/S0003347210003933