PowerPoint Presentation

Larval IBM results: 5mm and 9mm cod (Trond Kristiansen & Frode Vikebø)

•March 10th

•larvae are limited to foraging in the light window of 8 hours per day, resulting in a long nights with low or no foraging. The individuals rely on stomach reserves. The larvae run empty of energy after ca. 4-6 hours and the rest of the night individuals have negative growth.

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•April 20th

•the temperature of the water column increases slightly (1ºC warmer), but the daylight hours available for foraging have increased to 16 hours. This greatly increases growth for both 5 and 9 mm larvae.

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Light decreases exponentially in the water column, restricting foraging at 20m compared to the surface, at least for 5mm individuals.

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•Turbulence is not included in these calculations.

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