Accession Number : AD0635479

Title :   PHYSIOLOGICAL DYNAMICS OF SIPHONOPHORES FROM DEEP SCATTERING LAYERS.

Descriptive Note : Research and development rept. Nov 64-Aug 65.

Corporate Author : NAVY ELECTRONICS LAB SAN DIEGO CALIF

Personal Author(s) : PICKWELL, G. V.

Report Date : 20 APR 1966

Pagination or Media Count : 49

Abstract : Effects of siphonophores on sound propagation in the sea were studied by determining the size of gas bubbles they contain and produce, and the times, volumes, and rates involved in these processes. Major findings were: (1) gases contained in fresh siphonophore floats are generally close to ambient pressure, suggesting release of many bubbles during vertical ascent; (2) oxygen consumption may be elevated during production of CO; (:) diffusion constants for siphonophore floats are close to those for chitin; (4) calculated energy requirements for countering hydrostatic pressures indicate that float refilling times are probably no more than a few hours. (Author)

Descriptors :   (*AQUATIC ANIMALS, PHYSIOLOGY), (*INVERTEBRATES, PHYSIOLOGY), GASES, HYDROSTATIC PRESSURE, ACOUSTIC SIGNALS, SCATTERING, OXYGEN CONSUMPTION, CARBON MONOXIDE, DIFFUSION

Subject Categories : Biological Oceanography
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE