Effects of
salinity on egg and early larval characteristics of the black porgy
Acanthopagrus schlegeli
W.B.Huang, T.S. Chiu, C.T. Shih-2000
Israeli Journal of Aquaculture-Bamidgeh, 52 (2) :
61-69 (from Current Contents)
Abstract :
We examined age, body length, yolk volume and oil
globule volume at hatch, and post-hatch life span of the black porgy,
Acanthopagrus schlegeli, subjected to salinities of 28, 31, 34 and 37 ppt.
The hatching rate was 85% at 34 and 37 ppt and 60% at 31 ppt, but no eggs
hatched at 28 ppt. Time to hatch increased with salinity from 31 to 37 ppt,
but body length, yolk volume and oil globule volume at hatch and
post-hatching life span decreased. During the yolk-sac stage, there were
significant salinity effects on body length and oil globule volume, but not
on yolk volume. The findings that high salinity favors hatching rate while
low salinity favors growth and endurance to starvation may be applicable in
aquaculture of the black porgy during its early life.
(2 Chawchow St, Taipei 100, Taiwan, e-mail : bruce@ms1.fa.gov.tw)