ML112312

הערות

NOTES: PRIMS, April 1955 and Mayaguez, April 1956. Four fresh captives, all in poor condition: no spontaneous sound; only low thumps and grunts with ES. Original internal preamplifier replaced by NML 12AY7 parallel cathode follower. 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. 28.