... health, we monitored daily activity behaviour, recorded song and cheek patch size in males, and measured body size and hormone levels. As compared with controls under 12 h light:12 h darkness (12 h:12 h LD), both P and F1 pairs showed a compromised reproductive success, as evidenced by fewer fledglings...

... recorded male song on reproductive development in migrants and residents on a naturally increasing photoperiod. Second, we tested the sensitivity of migrant-specific life history events (fattening and pre-alternate molt) to song treatment. After 82 days, residents had higher luteinizing hormone and greater...

...Rupert C. Marshall; Bernd Leisler; Clive K. Catchpole; Hubert Schwabl SUMMARY Male song complexity is a sexually selected trait found in many songbirds,including strains of the domestic canary. Studies on several species have shown that male song can affect the hormonal state of females and may...

...Michele Franz; Franz Goller SUMMARY Song production in birds is driven by temporally complex respiratory patterns. In zebra finches ( Taeniopygia guttata ), song consists of repetitions of a stereotyped sequence of distinct syllables (motif). Syllables correspond to distinct expiratory pulses...

...Martin C. Göpfert; Daniel Robert SUMMARY In Drosophila melanogaster , antennal hearing organs mediate the detection of conspecific songs. Combining laser Doppler vibrometry, acoustic near-field measurements and anatomical analysis, we have investigated the first steps in Drosophila audition, i.e...

...Heather Williams SUMMARY As do many songbirds, zebra finches sing their learned songs while performing a courtship display that includes movements of the body, head and beak. The coordination of these display components was assessed by analyzing video recordings of courting males. All birds changed...

... are smooth and appear to be sealed with saliva. The song has a mean centre frequency of 3.2 kHz and is made up of variable-length trills of pulses of mean duration 15.8 ms. Many song pulses had smooth envelopes and their frequency did not vary by more than ±40 Hz from the centre frequency, with a relative...

...Zen Faulkes; Gerald S. Pollack ABSTRACT In crickets ( Teleogryllus oceanicus ), the auditory interneuron omega neuron 1 (ON1) responds to sounds over a wide range of frequencies but is most sensitive to the frequency of conspecific songs (4.5 kHz). Response latency is longest for this same...

... to the abdominal resonator, followed by a sustaining resonant vibration at, or close to, the song frequency. Subsequent pulses maintain the coherent resonance of the song pulse. * e-mail: [email protected] . † The experimental work reported here was largely carried out...

...Jane M. Doolan; David Young ABSTRACT Parameters of the calling song that were necessary to evoke phonotaxis in female bladder cicadas (Cystosoma saundersii) were determined for both long-range and short-range communication between the sexes. Females flew to loudspeakers that were broadcasting model...

...H. C. Bennet-Clark ABSTRACT During burrow digging by the mole cricket Scapteriscus acletus Rehn and Hubbard, the burrow is enlarged and shaped in a series of digging cycles, each lasting 1–2 min, and song chirps are produced after every cycle. The song becomes up to 18 dB louder and acoustically...