Please use this identifier to cite or link to this item:
Title: Intermediary metabolism in mudskippers, Periophthalmodon schlosseri and Boleophthalmus boddarti, during immersion or emersion
Authors: Ip, Y.K. 
Lim, C.B.
Chew, S.F.
Issue Date: Jul-2006
Citation: Ip, Y.K., Lim, C.B., Chew, S.F. (2006-07). Intermediary metabolism in mudskippers, Periophthalmodon schlosseri and Boleophthalmus boddarti, during immersion or emersion. Canadian Journal of Zoology 84 (7) : 981-991. ScholarBank@NUS Repository.
Abstract: This study aimed to examine effects of 48 h emersion on intermediary metabolism in the mudskippers Periophthalmodon schlosseri (Pallas, 1770) and Boleophthalmus boddarti (Pallas, 1770). The glycogen content increased significantly, while the lactate content remained unchanged, in the muscle of P. schlosseri during 48 h of emersion. Thus, emersion led to either a decrease in glycogen utilization or an increase in glycogen synthesis. Because there was no change in energy charge, P. schlosseri probably used energy stores other than glycogen during emersion. The phosphofructose kinase-1 (PFK) from the muscle of P. schlosseri became more sensitive to ATP inhibition after 6 h of emersion, indicating that a transient decrease in the glycolytic flux indeed occurred at this locus that led to an increase in glycogen content. In contrast, such phenomena were not observed in the muscle of B. boddarti during 48 h of emersion. Emersion also led to a significant increase in the muscle fructose-2,6-bisphosphate (F26P2) content in P. schlosseri, but not in B. boddarti. Based on results obtained from P. schlosseri undergoing forced exercise, we propose that a correlation may exist between the F26P2 content and the utilization of amino acids as an energy source in this mudskipper during emersion. © 2006 NRC.
Source Title: Canadian Journal of Zoology
ISSN: 00084301
DOI: 10.1139/Z06-082
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Jul 10, 2018


checked on Jun 4, 2018

Page view(s)

checked on Mar 12, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.