Abstract
1. 1. Sea urchin Stronglylocentrotus nudus and starfish Patiria pectinifera are apparent oxyregulators at levels over 3.0 ml O 2 · 1 −1 and 0.66 ml O 2 · 1 −1, respectively. 2. 2. Initial amount of lactic acid in tissues of the sea urchin is 3–4 times higher than that in tissues of the starfish. 3. 3. Initial amount of ATP in ambulacral and gonad tissues of the sea urchin is 3–4 times higher than that in the gut and pyloric caeca. 4. 4. The amount of ATP in ambulacral tissues of animals decreases proportionally to the water oxygen concentration. 5. 5. With decrease in oxygen concentration to 2.5 ml O 2 · 1 −1, the amount of ATP in gonads of sea urchins decreased by 33%, while that in the starfish increased 8 times. The starfish spawned at these low levels of oxygen. 6. 6. The amount of ATP in the tissues of the gut and pyloric caeca of the sea urchin did not depend on the level of oxygen concentration, and equaled 0.18 and 0.7 mg · g wet weight −1, respectively.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Comparative Biochemistry and Physiology -- Part B: Biochemistry and Molecular Biology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
