Effects of photoperiod on growth and feed utilization of juvenile Black Sea turbot (Psetta maeotica)

Turker A.

ISRAELI JOURNAL OF AQUACULTURE-BAMIDGEH, vol.57, no.3, pp.156-163, 2005 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 57 Issue: 3
  • Publication Date: 2005
  • Journal Name: ISRAELI JOURNAL OF AQUACULTURE-BAMIDGEH
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.156-163
  • Keywords: feed utilization, growth, juveniles, photoperiod, Psetta maeotica, turbot, PARR-SMOLT TRANSFORMATION, SCOPHTHALMUS-MAXIMUS, ATLANTIC SALMON, OXYGEN-CONSUMPTION, DAY LENGTH, TEMPERATURE, LIGHT, SIZE
  • Ondokuz Mayıs University Affiliated: No

Abstract

A study was conducted to determine the effect of different photoperiods on the growth and survival of juveniles of the Black Sea turbot (Psetta maeotica). Juvenile turbot (32.17 +/- 0.1 g) were reared under one of three experimental photoperiod regimes: natural, continuous light, or extended light (18 h light:6 h dark). The turbot were held in sea water (18 ppt) at 15-24 degrees C from May 27 to July 29, 2004. The maximum growth rate, feed efficiency, and specific growth rate were recorded in the fish exposed to the extended light period (p < 0.05). Continuous light may have acted as an irritant, inducing stress, suppressing growth, and reducing feed intake.