Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 367246
Title A brief note on the relationship between residual feed intake and aggression behaviour in juveniles of African catfish Clarias gariepinus
Author(s) Martins, C.I.; Hillen, B.; Schrama, J.W.; Verreth, J.A.J.
Source Applied Animal Behaviour Science 111 (2008)3-4. - ISSN 0168-1591 - p. 408 - 413.
Department(s) Aquaculture and Fisheries
Publication type Refereed Article in a scientific journal
Publication year 2008
Keyword(s) atlantic salmon - metabolic-rate - dominance hierarchies - social-status - growth - consequences - efficiency - burchell - trout - rates
Abstract Individual differences in maintenance levels have been related with energetically expensive processes such as aggression. This relationship is not fully understood as on one hand individuals with higher maintenance requirements seem to be more aggressive but on the other hand have smaller metabolic scopes and therefore less scope for activity. In this study the relationship between individual differences in maintenance requirements and aggression of African catfish is investigated using the residual feed intake as an approximation of maintenance requirements. Residual feed intake, defined as the difference between actual feed intake and that predicted from mean observed requirements for growth and maintenance was determined in individually housed African catfish. Afterwards, the aggressive behaviour of each individual was tested using pairwise contests. The results suggest that individuals with lower RFI (i.e. more efficient) are more aggressive. The most metabolically efficient individuals may have advantage during short and intense aggressive encounter, such as the one used in this study. Being more efficient in terms of nutrient use may therefore allow a faster but shorter term metabolic response in order to fulfil the energetic demands imposed by aggression.
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