摘要:

Synchronous audio-video recordings were made of free-livingDascyllus albisellaon coral reefs at Johnston Atoll, Central Pacifc Ocean. Males produced distinct and consistent sounds during courtship and mating. The courtship sound is a well-known feature of pomacentrid behavior, and is produced during the signal jump. MaleD. albisellaalso produced a mating sound, which has not been previously described for any other pomacentrid. The mating sound is produced as the male quivers during spawning. The courtship sound differed from the mating sound by having a greater number of pulses (6±4 vs. 3±1, mean ±SD) and a longer duration (262±57 vs. 127±45 msec). The courtship sounds of larger males were lower in frequency than those of smaller males (r2-0.64, power regression). The median dominant frequency of small males (20 to 40 g) was 390 Hz (n=12 males), compared to 334 Hz (n=7 males) for large males (40 to 60 g).

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753289

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

We developed and field-tested a passive acoustic detector that collects data on sound production by sonic fish. The detector was deployed to measure the timing of sound production by males of the damselfishDascyllus albisella(Pomacentridae), at Johnston Atoll, Central Pacific Ocean. Sound production rates were higher during the reproductive season (April) than during the non-reproductive season (October). The highest rates of sound production occurred on the day before and day of egg-laying. Sound production rates decreased during brood care, and increased again after hatching. The correlation of sound-production rate with the spawning cycle provided a reliable acoustic signal that was monitored by the detector. This new technology provides a capability for obtaining detailed measurements of reproductive activity over long time periods. Multiple detectors can be used simultaneously to monitor reproduction over large spatial scales.

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753290

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753291

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753292

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753293

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753294

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753295

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753296

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:0952-4622    

DOI:10.1080/09524622.1995.9753288

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor