Dynamics of intracohort cannibalism in cultured fish
By E. Baras, M. Jobling. 2002
268 citations recorded by the source corpus.
Cannibalism is a frequent phenomenon in fish, especially in culture environments where fish are unable to escape predation via habitat segregation or migration. Not all cultured fish species start to exhibit cannibalism at the same age or size, nor is cannibalism equally intense in different species or life stages. Predator to prey size ratios vary substantially between species and life stages, chiefly because cannibalism is governed by gape size limitations and allometric growth of mouthparts. The development of sense organs, hard body parts, swimming and escape capacities in both the predator and the prey also influence prey size selectivity. The dynamics of cannibalism are influenced by these, as well as by environmental, factors that have effects on feed intake, growth depensation and facilitate or complicate the displaying of cannibalistic behaviour. Knowledge about cannibalistic behaviour and the logistics of cannibalism along with environmental enhancement are prerequisites for the mitigation of cannibalism in aquaculture. Also, within the context of strain selection, it is of importance to determine whether cannibals are natural-born killers or just lottery winners. These factors are discussed, chiefly as they apply to intracohort cannibalism. In addition, guidelines are suggested for cannibalistic risk assessment, and methods for mitigation of cannibalism are discussed.
Subfields: Global and Planetary Change, Nature and Landscape Conservation
View Paper: https://www.semanticscholar.org/paper/195018d0e6419ee5c144a3670b6da2b440be9368
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In Global and Planetary Change
In Nature and Landscape Conservation
Citations in the corpus
- Effect of stocking density on the dynamics of cannibalism in sibling larvae of Perca fluviatilis under controlled conditions (2003, background): “Such an information is of great value for predicting forthcoming cannibalism, but is of limited value for understanding how intense cannibalism has been until then (Baras and Jobling, 2002).”
- Effect of weaning age and diet on pikeperch larviculture (2007, background): “It has been demonstrated that cannibalism is influenced by food type and availability, but also positively by the size heterogeneity among the population (Baras and Jobling, 2002; Kestemont et al., 2003) and, thus, can be reduced in larvae weaned at day 12, due to a lower growth rate.”
- A new classification of pre-ovulatory oocyte maturation stages in pikeperch, Sander lucioperca (L.), and its application during artificial reproduction (2012, background): “Asynchronous reproduction has a negative impact on production as it may lead to di¡erentiation in the size of reared larvae and intensi¢cation of cannibalism (Baras & Jobling 2002; Baras, Kestemont & Melard 2003).”
- Intracohort cannibalism and methods for its mitigation in cultured freshwater fish (2017, background): “In addition, at a certain stock density, fish start forming shoals and cannibals become perceptively confused and cannot select a prey (as the number of potential prey is too high) (Baras and Jobling 2002).”
- Suppression of aggressive behaviour in juvenile Atlantic cod (Gadus morhua) by l-tryptophan supplementation (2005, background): “A problem observed during rearing of larvae and juvenile fish is that heterogeneous growth leads to cannibalism (Baras and Jobling, 2002; Kestemont et al., 2003).”