Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/106874
Title: Profile of cortisol during the ontogeny of the Asian seabass, Lates calcarifer
Authors: Sampath-Kumar, R.
Byers, R.E. 
Munro, A.D. 
Lam, T.J. 
Keywords: Cortisol
Embryology
Lates calcarifer
Pituitary-interrenal axis
Issue Date: 1-May-1995
Citation: Sampath-Kumar, R.,Byers, R.E.,Munro, A.D.,Lam, T.J. (1995-05-01). Profile of cortisol during the ontogeny of the Asian seabass, Lates calcarifer. Aquaculture 132 (3-4) : 349-359. ScholarBank@NUS Repository.
Abstract: Whole-body cortisol was measured by radioimmunoassay from spawning for various periods up to 188 h post-spawning in 5 different broods. Fertilized eggs contained varying levels of cortisol (0.62-2.25 ng/g wet weight; designated "C0") that presumably originated from the mother. These levels declined as embryogenesis proceeded. The rate of decline (0.056 ± 0.004 ng/g/h) was fairly constant and was independent of C0. The decline continued up to about 4 h post-hatching (around 20 h post-spawning) when cortisol reached minimum levels. Soon after attaining the minimum, the levels started rising steadily to reach values as high as 6.10 ng/g by 180 h post-spawning. The rise is presumed to be a result of cortisol production by the larvae. The onset of this rise is much earlier than that reported in other species; it is also earlier than the first immunohistochemical evidence for the activity of the pituitary-interrenal axis, at around 40 h post-spawning. © 1995.
Source Title: Aquaculture
URI: http://scholarbank.nus.edu.sg/handle/10635/106874
ISSN: 00448486
Appears in Collections:Staff Publications

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

Page view(s)

40
checked on Nov 2, 2018

Google ScholarTM

Check


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