01824nas a2200205   4500008004100000245012200041210006900163300001200232490000800244520115400252653002701406653003001433653001201463653001901475653002701494653001501521100002401536700001701560856004101577       1998                        eng d00aRepresentation of behaviorally relevant sound frequencies by auditory receptors in the cricket teleogryllus oceanicus0 aRepresentation of behaviorally relevant sound frequencies by aud  a155-1630 v2013 a<p>Teleogryllus oceanicus is particularly sensitive to two ranges of sound frequency, one corresponding to intraspecific acoustical signals (4-5 kHz) and the other to the echolocation cries of bats (25-50 kHz). We recorded summed responses of the auditory nerve to stimuli in these two ranges. Nerve responses consist of trains of compound action potentials (CAPs), each produced by the summed activity of a number of receptor neurons. The amplitude of the CAP is up to four times larger for stimuli at 4.5 kHz than for stimuli at 30 kHz, suggesting either that the extracellular spikes produced by receptors that respond to 4.5 kHz are larger than those that respond to 30 kHz, or that receptors fire more synchronously in response to stimulation at 4.5 kHz, or that more receptors respond to stimulation at 4.5 kHz. Neither unit spike amplitude nor conduction velocity (which is expected to vary with spike amplitude) differs for the two frequencies, and the responses to 4.5 kHz are not produced by more tightly synchronized receptor populations, as judged by CAP breadth. We conclude that more receptors respond to 4. 5 kHz than to 30 kHz.</p>
10aacoustic communication10acompound action potential10acricket10asensory coding10aTeleogryllus oceanicus10aultrasound1 aPollack, Gerald, S.1 aFaulkes, Zen  uhttps://bio.acousti.ca/ja/node/5761801541nas a2200169   4500008004100000022001300041245011100054210006900165260001600234300000800250490000700258520098500265100001701250700002501267700002301292856005601315       1998                        eng d  a0014382000aCalling Songs of Field Crickets (Teleogryllus oceanicus) With and Without Phonotactic Parasitoid Infection0 aCalling Songs of Field Crickets Teleogryllus oceanicus With and   cJan-02-1998  a1660 v523 a<p>The field cricket Teleogryllus oceanicus has been introduced to Hawaii, where it is parasitized by an acoustically orienting parasitoid fly, Ormia ochracea. Previous work showed that call parameters from parasitized populations differ from those in unparasitized populations in a direction expected if selection by flies is occurring. Here we examined songs of males collected in the field and compare calling song characters of crickets later found to harbor parasitoid larvae with those of males free of parasitoids. The two groups differ significantly in several song characteristics, particularly the trill-like long chirp given at the beginning of each song. Males with longer long chirps containing shorter interpulse intervals are more likely to be parasitized, suggesting that the flies find such males more attractive. Depending on the traits females prefer, sexual selection may oppose natural selection in altering T. oceanicus song in parasitized populations.</p>
1 aZuk, Marlene1 aRotenberry, John, T.1 aSimmons, Leigh, W.  uhttp://www.jstor.org/stable/2410931?origin=crossref