ML116455

視聴覚メディア・ノート

BAY: xNOTES: NML studies. 5. Field investigations, Cape Canaveral to Narragansett Bay and Chesapeake Bay to Solomons, Md., May-July, 1964-66: distinctive, knocking pulses associated with the breeding period, usually produced in bursts of ca. 0.5 sec to several seconds duration with similar intervals between bursts. Individual fish may repeat this sequence for several minutes and remain silent for a shorter period before beginning again. Pulse repitition rate much slower than for Cynoscion regalis, ranging between 5-10 pulses/sec, with 8/sec common...Identical knocks and bursts recorded from ripe male specimens on hook and line within 2 m of hydrophone: ...two at Chesapeake Bay Bradge-Tunnel Island no. 1 (June 1964). Fish, M.P. and W.H. Mowbray. 1970. Sounds of the Western North Atlantic fishes: a reference file of biological underwater sounds. Johns Hopkins Press. Baltimore. p. 99.