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Dietary fatty acid composition significantly influenced the proactive-reactive behaviour of Senegalese sole ( Solea senegalensis) post-larvae

By Z. Ibarra-Zatarain, S. Morais, K. Bonacic, C. Campoverde, N. Duncan

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Abstract

Few studies have examined the influence of diet on larval proactive-reactive behavioural dimension of stress coping style responses. The present study evaluated the influence of using different vegetables oils (Linseed; Soybean; Olive) and fish oil (Cod liver) for Artemia metanauplii nutritional enrichment on the proactive-reactive behavioural responses of Senegalese sole ( Solea senegalensis) post-larvae (40 days post hatch). Forty-two Senegalese sole larvae from each of the four replicate tanks per treatment were tested. Two tests were performed: a new environment individual-based test, which evaluate the larvae latency time to move, total activity time and total distance moved; and a risk group-based test, which consisted in evaluating the larval capacity to cross from a "comfort" zone to a "risk" zone. In the group-based test, proactive, intermediate and reactive individuals were identified depending on the time taken to cross between two zones. Larvae fed with Artemia metanauplii enriched with the cod liver oil emulsion were significantly ( P=0.01) larger and in the individual-based test presented significantly higher total activity time ( P=0.08) and total distance moved ( P=0.01) than larvae from the other dietary treatments. No significant correlations ( P>0.05) were observed between larvae total length and latency time to move, total activity time or total distance moved across all treatments or within any dietary treatment. In the group-based test, fish fed with Artemia enriched with the cod liver oil emulsion presented a significantly higher proportion of proactive larvae ( P=0.02) and the lower proportion of reactive larvae. The present study showed for the first time that (i) Senegalese sole presented a defined proactive-reactive behaviour from early ontogenesis and (ii) dietary fatty acid composition significantly influenced the proactive-reactive behavioural dimension of stress coping style of sole larvae. The current study has practical implications that open the possibility to produce organisms that have behavioural styles that could ultimately result in improved aquaculture productivity.

Publication Title Applied Animal Behaviour Science
Volume 171
Pages 233-240
ISBN/ISSN 0168-1591
DOI 10.1016/j.applanim.2015.08.007
Language English
Author Address IRTA, Sant Carles de la Rapita, Carretera de Poble Nou, km 5.5, E-43540 Sant Carles de la Rapita, Tarragona, Spain.neil.duncan@irta.cat
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Tags
  1. acids
  2. Angiosperms
  3. Animal behavior
  4. Animal nutrition
  5. Animals
  6. Aquacultural and fisheries
  7. Aquatic organisms
  8. Arthropods
  9. brine shrimp
  10. Butterflies and moths
  11. Composition
  12. Crustaceans
  13. Diets
  14. Dogs
  15. Enrichment
  16. Fatty acids
  17. Fish
  18. Flowers
  19. Invertebrates
  20. Lipids
  21. Liver
  22. Nutrition
  23. oils
  24. ontogeny
  25. peer-reviewed
  26. Personality
  27. Plants
  28. productivity
  29. Research
  30. shrimps
  31. Soybeans
  32. therapeutics
  33. vegetables
  34. vertebrates
Badges
  1. peer-reviewed