SWIMBLADDER MORPHOLOGY OF SOME MESOPELAGIC FISHES IN RELATION TO SOUND SCATTERING.
NAVY ELECTRONICS LAB SAN DIEGO CALIF
Pagination or Media Count:
An examination was made of fresh and preserved specimens of Pacific lantern fishes, hatchet fishes, and hake. Most of the lantern fishes under 50-mm standard length contain gas in their swimbladders and, hence, are probably major sound scatterers. The hatchet fishes possibly contribute to scattering of nonmigratory layers. The resonance depths of the swimbladders differ widely for sound of different frequencies. Because of its larger size, the swimbladder of the hake should resonate at low frequencies.
- Anatomy and Physiology