02627nas a2200241   4500008004100000022001300041245004800054210004800102260001600150300001600166490000700182520177900189100001901968700002101987700001902008700001802027700002102045700002102066700002502087700001702112700002302129856023302152       2014                        eng d  a0960982200aRapid Convergent Evolution in Wild Crickets0 aRapid Convergent Evolution in Wild Crickets  cJan-06-2014  a1369 - 13740 v243 a<p>The earliest stages of convergent evolution are difficult to observe in the wild, limiting our understanding of the incipient genomic architecture underlying convergent phenotypes [1, 2]. To address this, we capitalized on a novel trait, flatwing, that arose and proliferated at the start of the 21stcentury in a population of field crickets (Teleogryllus oceanicus) on the Hawaiian island of Kauai [3]. Flatwing erases sound-producing structures on male forewings. Mutant males cannot sing to attract females, but they are protected from fatal attack by an acoustically orienting parasitoid fly (Ormia ochracea). Two years later, the silent morph appeared on the neighboring island of Oahu. We tested two hypotheses for the evolutionary origin of flatwings in Hawaii: (1) that the silent morph originated on Kauai and subsequently introgressed into Oahu and (2) that flatwing originated independently on each island. Morphometric analysis of male wings revealed that Kauai flatwings almost completely lack typical derived structures, whereas Oahu flatwings retain noticeably more wild-type wing venation. Using standard genetic crosses, we confirmed that the mutation segregates as a single-locus, sex-linked Mendelian trait on both islands. However, genome-wide scans using RAD-seq recovered almost completely distinct markers linked with flatwing on each island. The patterns of allelic association with flatwing on either island reveal different genomic architectures consistent with the timing of two mutational events on the X chromosome. Divergent wing morphologies linked to different loci thus cause identical behavioral outcomes - silence - illustrating the power of selection to rapidly shape convergent adaptations from distinct genomic starting points.</p>
1 aPascoal, Sonia1 aCezard, Timothee1 aEik-Nes, Aasta1 aGharbi, Karim1 aMajewska, Jagoda1 aPayne, Elizabeth1 aRitchie, Michael, G.1 aZuk, Marlene1 aBailey, Nathan, W.  uhttps://linkinghub.elsevier.com/retrieve/pii/S0960982214005247https://api.elsevier.com/content/article/PII:S0960982214005247?httpAccept=text/xmlhttps://api.elsevier.com/content/article/PII:S0960982214005247?httpAccept=text/plain02511nas a2200253   4500008004100000022001300041245012200054210006900176260001600245300001200261490000800273520169800281653002701979653001502006653002202021653002102043653002702064653002102091653001502112653001702127100002302144700002402167856006602191       2017                        eng d  a0003347200aDivergent mechanisms of acoustic mate recognition between closely related field cricket species ( Teleogryllus  spp.)0 aDivergent mechanisms of acoustic mate recognition between closel  cJan-08-2017  a17 - 250 v1303 a<p>Effective recognition of conspeci fi c mating signals reduces the risk of maladaptive hybridization. Dis- secting the signal recognition algorithms that underlie preferences is a useful approach for testing whether closely related taxa evaluate the same or different signal features to achieve mate recognition. Such data provide information about potential constraints and targets of selection during evolutionary divergence. Using a series of mate choice trials, we tested whether closely related, but genetically and phenotypically divergent, fi eld cricket species ( Teleogryllus oceanicus and Teleogryllus commodus ) use shared or distinct recognition algorithms when evaluating acoustic male calling songs. These species overlap in sympatry, show premating isolation based on female discrimination of male calling songs, yet are capable of producing hybrid offspring. Unexpectedly, female selectivity for features of male song differed between the two species. We found that the two species use a combination of shared and unique signal fi ltering mechanisms, and we characterized how information about male carrier frequency, pulse rate and temporal patterning is integrated to achieve song recognition in each species. These results illustrate how comparatively few, simple modi fi cations in key components of signal recognition algo- rithms can lead to striking interspeci fi c discrimination between closely related taxa, despite apparent signal complexity. The fi nding that some steps during signal recognition and fi ltering are shared between the species, while others differ, can help to identify behavioural traits targeted by selection during evolutionary divergence</p>
10aacoustic communication10adivergence10afemale preference10amate recognition10areproductive isolation10asexual selection10aspeciation10aTeleogryllus1 aBailey, Nathan, W.1 aHennig, R. Matthias  uhttp://linkinghub.elsevier.com/retrieve/pii/S000334721730182300454nas a2200145   4500008004100000022001300041245005600054210005300110260001600163300001400179490000700193100001900200700002300219856006600242       2016                        eng d  a0960982200aSignal Evolution: 'Shaky' Evidence for Sensory Bias0 aSignal Evolution Shaky Evidence for Sensory Bias  cJan-01-2016  aR78 - R800 v261 aPascoal, Sonia1 aBailey, Nathan, W.  uhttp://linkinghub.elsevier.com/retrieve/pii/S0960982215014396