Institute of Pure & Applied Biology, Bahauddin Zakariya University, Multan, Pakistan.
Comparison of compensatory growth responses of juvenile three-spined stickleback and minnow following similar food deprivation protocols
Article first published online: 1 APR 2005
Journal of Fish Biology
Volume 58, Issue 4, pages 1149–1165, April 2001
How to Cite
Zhu, X., Cui, Y., Ali, M. and Wootton, R. J. (2001), Comparison of compensatory growth responses of juvenile three-spined stickleback and minnow following similar food deprivation protocols. Journal of Fish Biology, 58: 1149–1165. doi: 10.1111/j.1095-8649.2001.tb00562.x
- Issue published online: 1 APR 2005
- Article first published online: 1 APR 2005
- (Received 16 August 2000, Accepted 20 November 2000)
- growth efficiency;
The compensatory growth responses of individual juveniles of two co- existing species were compared after identical periods of starvation to determine inter-specific similarities and differences. The carnivorous stickleback Gasterosteus aculeatus was compared with the omnivorous minnow Phoxinus phoxinus. Both species experienced 1 or 2 weeks of starvation before being re-fed ad libitum. The two species differed in their response to the starvation periods, with minnows showing a lower weight-specific loss. Both species showed compensatory responses in appetite, growth and to a lesser extent, growth efficiency. Minnows wholly compensated for 1 and 2 weeks of starvation. At the end of the experiment, sticklebacks starved for 2 weeks were still showing a compensatory response and had not achieved full compensation. The compensatory responses of the sticklebacks showed a lag of a week before developing in the re-feeding phase, whereas the response of the minnows was immediate. Analysis of lipid and dry matter concentrations suggested that the compensatory response restored reserve lipids while also bringing the fish back to the growth trajectory of continuously fed fish.