Temperature is important
for development of fish larvae because it can regulate metabolism and feeding behavior.
Temperature directly influences the size of fish larvae at hatching, yolkabsorption, growth, survival, feeding success and digestion.
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| Seriola lalandi |
In many cases, high
mortality and abnormality of fish larvae are attributed to unsuitable temperature
in the rearing system. Within the temperature range of fish tolerance, the
increase of temperature accelerates ontogenetic development, but a high
temperature may reduce fish survival rates at the same time. During ontogenetic
development, the size at metamorphosis tends to increase at low temperature. In
contrast, at high temperatures, yolk-sac absorption of fish larvae is faster
resulting in a shorter endogenous feeding period. Within the range of optimal
temperatures, food intake of fish usually increases with temperature increment,
but falls dramatically at the low end of optimal temperatures. Therefore,
choosing appropriate temperature for rearing fish larvae is essential to
achieve fast growth and high survival in finfish hatcheries. Read more>>>>>>
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