## Abstract Forty species of aquatic animals belonging to 14 phyla of various levels of organic complexity were examined with reference to their ability to survive increasing hydrostatic pressure. The results of these experiments lead us to seriously question the commonly stated and often quoted hy
The Effects of Hydrostatic Pressure on Living Aquatic Organisms III. Behavior and Tolerance of Euplanktonic Organisms to Increased Hydrostatic Pressure
β Scribed by Dr. Robert Y. George; Dr. James P. Marum
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- English
- Weight
- 784 KB
- Volume
- 59
- Category
- Article
- ISSN
- 1434-2944
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
In the habitat temperature, northern cold planktonic species seem more resistant to pressure than related southern warm species. Generally, a prolonged βhyperactivity phaseβ was recognized between moderate and high hyperbaric levels in most planktonic species. Descriptions of reactions of various planktonic species to increasing pressure are given with reference to stimulated activity (R~1~), onset of tetany (T), and inactivity (I). On the basis of LD~50~ levels, the 16 planktonic species show high, moderate, low or extremely low tolerance to one hour stress conditions of high hydrostatic pressure.
π SIMILAR VOLUMES
## Abstract A survey of the pressure resistance of aquatic animals in different stages of their life cycle shows that adults generally are more tolerant of pressure than the egg and nauplii, but older adults appear less pressure resistant than younger adults. Data on many species of aquatic animals
## Abstract Study on the total spectrum of organisms (72 species) subjected to hydrostatic pressure as of this date allows one to established categories of pressure tolerance (resistance): Extremely high β eurybiotic forms (1000β1200 atm), High β marine littoral, planktonic, freshwater (600β1000 at
## Abstract Capture of living deepβsea animals is reviewed. The conditions for the successful recovery of living animals from the deepβsea are elaborated with examples. Control of pressure, temperature, or both, appears to be a prerequisite for the capture of living deepβsea animals. Deepβsea anima
## Abstract Behavioral responses of marine and aquatic animals are characterized as __R__~1~ (a first response of prolonged excitation), __T__ (tetany or paralysis), __I__ (inactivity and relaxation) and death as measured by the LD~50~. R~1~, __T__, and __I__ are reversible responses and temperatur
## Abstract The methods and pressure chambers used in the experiments are described. Special attention is paid to standardization of results, to problems of operation, adiabatic heating, safety procedures, and philosophy of operation of the pressure systems in the exploration of the problem.