Environmental Biology of Fishes

, 86:121

Feeding, morphological changes and allometric growth during starvation in miiuy croaker larvae

  • Xiu-Juan Shan
  • Liang Cao
  • Wei Huang
  • Shuo-Zeng Dou
Article

DOI: 10.1007/s10641-008-9412-0

Cite this article as:
Shan, X., Cao, L., Huang, W. et al. Environ Biol Fish (2009) 86: 121. doi:10.1007/s10641-008-9412-0

Abstract

We investigated the effects of the timing of first feeding (larvae in F0, F1, F2, F3 and S were first fed on day 3, 4, 5, 6 days after hatching (DAH) and unfed, respectively) on feeding, morphological changes, survival and growth in miiuy croaker larvae at 24°C. The fed larvae initiated feeding on 3 DAH and reached point of no return (PNR) on 6 DAH. Larvae in F0 and F1 groups survived apparently better than F2 group at the end of the experiment on 36 DAH. High larval mortality occurred from 3 to 7 DAH in all feeding groups, accounting for 40% (F0, F1 and F2 groups) to 90% (F3 and S groups) of the total mortality. Larvae in F0 and F1 groups grew better than F2 group throughout the experiment. Eye diameter, body height, head height and mouth gape of the first feeding larvae were more sensitive to starvation than other morphometrics and could be used as indicators for evaluating their nutritional status. Results indicated that delayed first feeding over 1 day after yolk exhaustion could lead to poor larval survival and growth. To avoid starvation and obtain good growth in culturing, larvae feeding should be initiated within 1 day after yolk exhaustion at 24°C.

Keywords

Miichthys miiuy larvaeDelayed feedingMorphometricsGrowth and survival

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Xiu-Juan Shan
    • 1
    • 2
  • Liang Cao
    • 1
    • 2
  • Wei Huang
    • 1
    • 2
  • Shuo-Zeng Dou
    • 1
  1. 1.Institute of OceanologyChinese Academy of SciencesQingdaoPeople’s Republic of China
  2. 2.Graduate SchoolChinese Academy of SciencesBeijingPeople’s Republic of China