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- Title
Effect of temperature and salinity on hatching and larval survival of yellowfin tuna Thunnus albacares.
- Authors
Kim, Yang-Su; Delgado, Darys; Cano, Ing.; Sawada, Yoshifumi
- Abstract
Effects of temperature and salinity on hatching rate and normal larval rate at hatching, and survival of fasting larvae after hatching (survival activity index; SAI) were investigated using spontaneously spawned eggs of captive yellowfin tuna ( Thunnus albacares, YFT). Within the range of experimental temperatures, 23-35 °C, at 32 psu salinity, hatching and normal larval rates and SAI were highest at 23 and 26 °C. In the experiment exploring the most suitable salinity within the range 23-38 psu, 35 and 38 psu gave the highest hatching rate and normal larval rate; however, SAI was highest at 26 psu. The results of multi-factor experiments in each temperature (23, 26, and 29 °C) with each salinity (32, 35, and 38 psu) indicated interactive effects of temperature and salinity on the three indices and within the experimental ranges gave an optimal combination of 23 °C and 38 psu for YFT hatching and survival.
- Subjects
YELLOWFIN tuna; EFFECT of temperature on fishes; EFFECT of salt on fishes; EGG incubation; FISH larvae; FISH spawning
- Publication
Fisheries Science, 2015, Vol 81, Issue 5, p891
- ISSN
0919-9268
- Publication type
Article
- DOI
10.1007/s12562-015-0901-8