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The influence of light on the diel vertical migration of young-of-the-year burbot Lota lota in Lake Constance

The influence of light on the diel vertical migration of young-of-the-year burbot Lota lota in Lake Constance

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PROBST, Wolfgang Nikolaus, Reiner ECKMANN, 2009. The influence of light on the diel vertical migration of young-of-the-year burbot Lota lota in Lake Constance. In: Journal of Fish Biology. 74(1), pp. 150-166. ISSN 0022-1112. eISSN 1095-8649

@article{Probst2009influ-8042, title={The influence of light on the diel vertical migration of young-of-the-year burbot Lota lota in Lake Constance}, year={2009}, doi={10.1111/j.1095-8649.2008.02120.x}, number={1}, volume={74}, issn={0022-1112}, journal={Journal of Fish Biology}, pages={150--166}, author={Probst, Wolfgang Nikolaus and Eckmann, Reiner} }

The influence of light on the diel vertical migration of young-of-the-year burbot Lota lota in Lake Constance Eckmann, Reiner 2011-03-24T17:39:28Z eng application/pdf Eckmann, Reiner The diel vertical distribution of young-of-the-year (YOY) burbot Lota lota in the pelagic zone of Lake Constance was compared to light intensity at the surface and to the light intensity at their mean depth. Lota lota larvae inhabited the pelagic zone of Lake Constance from the beginning of May until the end of August. From early June, after the stratification of the water column, fish performed diel vertical migrations (DVM) between the hypolimnion and epilimnion. The amplitude of DVM increased constantly during the summer and reached 70 m by the end of August. Lota lota started their ascent to the surface after sunset and descended into the hypolimnion after sunrise. As the YOY fish grew from May to August, they experienced decreasing diel maximum light intensities: in May and early June L. lota spent the day at light intensities >40 W m-², but they never experienced light intensities >01 W m-² after the end of June. From this time, L. lota experienced the brightest light intensities during dusk and dawn, suggesting feeding opportunities at crepuscular hours. The present study implies, that YOY L. lota in the pelagic zone of Lake Contance increased their DVMamplitude during the summer to counteract a perceived predation risk related to body size and pigmentation. 2009 deposit-license Probst, Wolfgang Nikolaus Probst, Wolfgang Nikolaus 2011-03-24T17:39:28Z First publ. in: Journal of Fish Biology 74 (2009), pp. 150-166

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