Title
Anaerobic dormancy quantified in Artemia embryos: A calorimetric test of the control mechanism
Document Type
Article
Publication Date
1-1-1988
Abstract
Continuous measurement of heat dissipation from brine shrimp embryos during reversible transitions from aerobic development to anaerobic dormancy demonstrates a primary role for intracellular pH (pHi) in this metabolic switching. Artificially elevating the depressed pHi during anoxia by adding ammonia markedly reactivates metabolism, as judged by increases in heat dissipation, trehalose catabolism, and the ratio of adenosine triphosphate to adenosine diphosphate. Energy flow during anaerobic dormancy is suppressed to 2.4 percent of aerobic values, which is the lowest percentage thus far reported for euryoxic animals. Use of diguanosine tetraphosphate stores cannot account for this observed heat dissipation. Thus, mobilizing trace amounts of trehalose may explain the energy metabolism during quiescence.
Publication Source (Journal or Book title)
Science
First Page
1425
Last Page
1427
Recommended Citation
Hand, S., & Gnaiger, E. (1988). Anaerobic dormancy quantified in Artemia embryos: A calorimetric test of the control mechanism. Science, 239 (4846), 1425-1427. https://doi.org/10.1126/science.239.4846.1425