Sessions on Light and aquatic animals at AQUA2024

Two Sessions focusing on the effect of light on different aquatic animals are going to be organised on Thursday, 29^th August 2024, as special events within AQUA2024, to raise the attention of the research society to the significance of the topic.

Many different environmental and physiological parameters have been investigated and monitored to assess their effects on the growth and production of fish and other aquatic animals, and lately also on animal welfare. Though a lot of information is available by now on most important environmental factors, that are already incorporated into production methods and systems, this is not the case with different parameters of light.

Effect of light has been of interest to some aquaculture researchers and developers using the results of science in recent years, yet such attempts have been scarce, sporadic, and have not received much attention, though light has been shown to have a significant effect on fish physiology. The wavelength, length of illumination, colour and intensity of light all affect the function of genes (genetics), growth and sexual maturation (physiology), feed conversion and diet (nutrition), stress responses (immunology) and disease development (health) in fish and other aquatic species of different ages. This suggests that the subject is part of contemporary aquaculture and will become a major issue in the near future.

The aim of the two special sessions is to provide an overview of results already available regarding light, fish and other aquatic species, to enable scientists, producers and all interested to meet up and share their experiences, to raise attention to the topic and to identify the next steps and areas of information need that have the most relevance to be able to improve the welfare and production of aquatic animals.

Please note that the time dedicated for each presentation also includes questions and replies regarding the specific topic.

9.00-12.30
Room: MR 19
Light and Fish
Chair: Christian Philip Unmack (Eurofish)
Convenor: Béla Urbányi (MATE)

9.00-9.30 Lars Ebbesson and Pradeep Lal: REVOLUTIONARY LIGHTING, TECHNOLOGIES AND MACHINE VISION IN AQUACULTURE: ENHANCING EFFICIENCY AND CUTTING COSTS—BUT WHAT ABOUT THE FISH?

9.30-10.00 Maud Alix, Lena Geitung, Tim Dempster, Line Vatne Martinsen, Margareth Møgster, Velimir Nola, Birgitta Norberg, Frode Oppedal: LIGHT, SHADING AND SUBMERGENCE AS METHODS TO CONTROL FARMED COD SEXUAL MATURATION

10.00-10.30 Øyvind Hansen: DEVELOPMENT OF THE USE OF LIGHT IN THE COD FARMING INDUSTRY ON FISH IN SEA-CAGES

10.30-10.45: QUESTIONS AND DISCUSSION

10.45-11.15 Coffee break

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11.15 – 11.45 Ana Gavrilović and Jurica Jug Dujaković: DISTURBANCE IN NUTRITIONAL PROVISION IN RELATION TO PHOTOPERIOD AND TEMPERATURE IN CARP PONDS

11.45-12.15 Yafan Zhu, Akihiro Takemura: DEVELOPMENT OF AQUACULTURE TECHNOLOGY BASED ON THE POTENTIAL SYNERGISTIC EFFECTS OF LIGHT WAVELENGTH AND SALINITY ON THE MALABAR GROUPER EPINEPHELUS MALABARICUS GROWTH PHYSIOLOGY

12.15-12.30: QUESTIONS AND DISCUSSION

14.00-17.30
Room: MR 19
Light and Other Aquatic Organisms
Chair: Christian Philip Unmack (Eurofish)
Convenor: Béla Urbányi (MATE)

14.00-14.30 F. Javier Sánchez Vázquez: LIGHT AND WELFARE IN AQUACULTURE

14.30-15.00 Sebastian Marcus Strauch: ENHANCING SMOLT WELFARE, HEALTH, AND ROBUSTNESS THROUGH NEW INSIGHTS IN BIOLOGY AND ADVANCED LIGHT TECHNOLOGY

15.00-15.30 Jelena Stanivuk, Marcus Stüeken, István Vida, Uroš Ljubobratović: LIGHT SOLUTIONS FOR PIKEPERCH FARMING

15.30-16.00 Edson Panana, Gwendoline Deceuninck, Stefan Teerlinck and Dominique Adriaens: EFFECT OF PHOTOPERIOD REGIME ON THE GROWTH PERFORMANCE, SURVIVAL, SWIM BLADDER INFLATION AND VERTEBRAL ANOMALIES OF PIKEPERCH (SANDER LUCIOPERCA) LARVAE IN RECIRCULATING AQUACULTURE SYSTEMS (RAS)

16.00-16.30 Koushik Roy, Lubos Zabransky, Eva Petraskova, Zdenka Machova, Ales Tomcala, Jan Mraz: DYNAMICS OF AMINO AND FATTY ACIDS IN POND PELAGIC PLANKTON CONSORTIA: LINKS TO TEMPERATURE, PHOTOPERIOD, NUTRIENTS AND CONSUMER GRAZING PRESSURE

16.30-17.00 Borys Skrzypiński:MEASUREMENTS OF OPTICAL RADIATION IN AQUATIC ENVIRONMENTS – CHALLENGES AND BENEFITS OF THE SPECTRORADIOMETRIC APPROACH

17.00-17.30- OVERALL DISCUSSION ON THE TOPIC OF LIGHT, CONCLUSIONS– Christian P. Unmack