The differences in metabolic activity of subitaneous and diapause eggs in Centropages tenuiremis

The respiration and the isoenzymes of subitaneous and diapause eggs of Centropages tenuiremis in Xiamen waters of China were investigated. The results demonstrated that the average oxygen consumption of subitaneous eggs was lower than that of diapause eggs during the pre-diapause stage. The characte...

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Bibliographic Details
Published in:Journal of plankton research 2009-02, Vol.31 (2), p.223-231
Main Authors: Wu, Li-Sheng, Wang, Gui-Zhong, Li, Shao-Jing
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Biological and medical sciences
Centropages
Centropages tenuiremis
Crustacea
Diapause
Eggs
Esterase
Fundamental and applied biological sciences. Psychology
General aspects
Invertebrates
Isoenzymes
Malate dehydrogenase
Oxygen consumption
Respiration
Sorbitol
Spawning
Superoxide dismutase
Synecology
Temperature
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Summary:The respiration and the isoenzymes of subitaneous and diapause eggs of Centropages tenuiremis in Xiamen waters of China were investigated. The results demonstrated that the average oxygen consumption of subitaneous eggs was lower than that of diapause eggs during the pre-diapause stage. The character of respiration in diapause eggs was as follows: the oxygen consumption quickly rose after spawning, and reached a maximal value, then gradually declined to a lower value that was maintained at a lower value (∼20% of the maximal value), the low value of oxygen consumption in diapause eggs was lower than that in subitaneous eggs at the same temperature (∼70%). The experimental results also indicated that among subitaneous, diapause and pre-diapause eggs of Centropages tenuiremis, the pre-diapause eggs were the most sensitive to temperature, the diapause eggs were the most insensitive; the sensitivity of subitaneous eggs to temperature was intermediate. The results also showed that there are obvious differences of isozyme patterns in malate dehydrogenase (MDH), sorbitol dehydrogenase (SDH), superoxide dismutase (SOD) and esterase (EST) between subitaneous eggs and pre-diapause eggs, and the characteristic enzyme bands for pre-diapause eggs were shown to be as follows: MDH61, MDH81, SDH41, SDH60, SOD97, EST48, EST59 and EST61; for subitaneous eggs: MDH59, SDH70 and EST93.
ISSN:0142-7873
1464-3774
DOI:10.1093/plankt/fbn113