. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SECONDS FIGURE 9. Toothplate stridulation of Diodon hystrix in aquarium. FIGURE 10. Toothplate stridulation of Sphcroidcs spcngleri in aquarium. were recorded as a pair of black angelfishes butted several times against a pair of cowfish, Lactophrys tricornis (L.), approximately 6 feet from the hydrophone. No sounds were recorded from the single species of butterflyfish studied, Chaetodon striatus L., nor were sounds recorded from an immature specimen (4-inch, total length) of the French angelfish, Poinacanthits parn (Bloch).
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SECONDS FIGURE 9. Toothplate stridulation of Diodon hystrix in aquarium. FIGURE 10. Toothplate stridulation of Sphcroidcs spcngleri in aquarium. were recorded as a pair of black angelfishes butted several times against a pair of cowfish, Lactophrys tricornis (L.), approximately 6 feet from the hydrophone. No sounds were recorded from the single species of butterflyfish studied, Chaetodon striatus L., nor were sounds recorded from an immature specimen (4-inch, total length) of the French angelfish, Poinacanthits parn (Bloch). Diodontidac, Tetradontidae (Fish, 1948, 1954; Burkenroad, 1931). The porcu- pinefish, Diodon L., and the puffer, Sphcroidcs spcngleri (Bloch), were so similar in acoustical behavior as to merit a single discussion (Table II). Both produce sound during and after inflation by stridulation of the toothplates, the sound being of a klaxon-like variety (Figs. 9, 10). Only feeding sounds were recorded from undisturbed individuals. Frequencies of greatest intensities are similar in chewing and stridulation noises, although these levels vary between the two species (Table II) and may be expected to vary with size. Only a single individual of each was recorded at Bimini. Observations on these species and on the common puffer, Sphcroidcs inaculatus (Bloch and Schneider) of the Woods Hole area suggest that the stridulatory sound is more readily elicited from smaller individuals than from full-grown .4 SECONDS. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass.
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
