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IS WHERE YOU LIVE...WHO YOU ARE??? Influence of rearing environment on behaviour and growth of sole ( Solea solea ). Julia Mas-Muñoz 1,2,3 , Hans Komen 2 , Oliver Schneider 3 , Johan Verreth 1 and Johan W. Schrama 1. Objective. Conclusions. - PowerPoint PPT Presentation
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1Aquaculture and Fisheries Group, Wageningen University, The Netherlands2Animal Breeding and Genetics Group, Wageningen University, The Netherlands3Wageningen IMARES, Yerseke, The Netherlands
Address: De Elst 1, P.O. 338 6700AH Wageningen, The NetherlandsTel: (+31) 0317-483307Fax: (+31) 0317-483937Email: [email protected]
IS WHERE YOU LIVE...WHO YOU ARE???
Influence of rearing environment on behaviour and growth of sole (Solea solea) Julia Mas-Muñoz1,2,3, Hans Komen2, Oliver Schneider3 , Johan Verreth 1and Johan
W. Schrama1
Behaviour
Feed intake
Growth
Light &TempSubstrateFeed
Objective
BP SP SR0
50
100
150AFTER
Tim
e sw
im (s
ec)
Results1. Explorative behaviour of fish in a Novel Environment
2. Relationship between individual behaviour and growth
Exploration Novel Environment Test
Indoor Outdoor
BP SP SR BP SP SR
BEFORETime swim (sec)
0.46** -0.19ns 0.01ns 0.07ns 0.16ns -0.06ns
AFTER Time swim (sec)
0.35* 0.03ns 0.20ns 0.08ns 0.20ns -0.07ns
BP SP SR0
50
100
150BEFORE Indoor
Outdoor
Tim
e sw
im (s
ec)
Spearman correlations between swimming activity of fish in a novel environment and growth (g/kg0.8/d)*p<0.05, **p<0.01, ***p<0.001, # p<0.1, N.S not significant
1. Explorative behaviour of sole in a novel environment is context dependant
2. Rearing environment influences the relation between individual behaviour and growth of sole
Conclusions
Novel environment Test
When? BEFORE and AFTER reared in environment
Where?Circular barren bottom tanks
What? Swimming activity (sec) per fish during 10 min observation
OutdoorN=12
SubstrateN=8
Ragworm
SR
Pellets
SP
BarrenN=4
Pellets
BP
IndoorN=12
SubstrateN=8
Ragworm
SR
Pellets
SP
BarrenN=4
PelletsBP
SR
Experimental design
SP BP
Rearing Environments: SR, SP, BP
What? Substrate: Sand (S) vs. Barren (B)Feed : Ragworms (R) vs. Dry feed (P)
Where?Environment: Outdoor vs. IndoorIndoor: Controlled light and TempOutdoor: Variable light and Temp
How?20 fish/tank4 replicates
Duration? Growth period of 40 days
6 treatments:
N.S.
