Genetics of cannibalism in a viviparous fish and its relationship to population density

Thibault, Roger E.

doi:10.1038/251138a0

Cited by 73 publications

(53 citation statements)

References 9 publications

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“…However, the extent to which cannibalistic behaviour is genetically controlled in fish remains controversial, and it is still unclear if cannibals in many species are ''natural born killers'' or just ''lottery winners'' (Baras and Jobling 2002;Król et al 2013;Yang et al 2015). Some studies have demonstrated that this phenomenon is to some extent genetically determined (Thibault 1974;Ferguson and Noakes 1983;van Damme et al 1989;Amundsen et al 1999;Yang et al 2015). However, the interactions between genotype and environment play a major role in the expression of cannibalism (Baras and Jobling 2002;Yang et al 2015).…”

Section: Causes Occurrence and Developmentmentioning

confidence: 99%

Intracohort cannibalism and methods for its mitigation in cultured freshwater fish

Naumowicz

Pajdak

Terech-Majewska

et al. 2017

Rev Fish Biol Fisheries

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Cannibalism is a common phenomenon that occurs in over 30 fish families. Most of the species are valuable objects of aquaculture and cannibalism is highly undesirable. Cannibalism is an aggressive behaviour, which can be caused by stress induced by various population and environmental factors and can occur in two main forms: early larval and late juvenile (or adult). Each of these forms can lead to severe losses of stock. Losses are caused not only by fish eating each other, but also by an increase in the number of infections (the result of body surface damage). It is important to understand the phenomenon of cannibalism in order to properly prevent, diagnose and reduce it. The main aim of this study was to present and examine some of the well-examined methods of cannibalism mitigation. Most of the methods consist of creating rearing conditions similar to natural conditions and to reduce stress. Moreover, because of large interspecies differences, similar methods can result in different effects depending on the species. Additional studies are needed to better understand the biology of each cultured species with particular emphasis on the impact of domestication, as well as to improve fish rearing conditions.

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Section: Causes Occurrence and Developmentmentioning

confidence: 99%

Intracohort cannibalism and methods for its mitigation in cultured freshwater fish

Naumowicz

Pajdak

Terech-Majewska

et al. 2017

Rev Fish Biol Fisheries

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“…Not surprisingly, a genetic component of cannibalistic behaviour has been demonstrated (Thibault, 1974;Hecht and Pienaar, 1993). Cannibalism may also indirectly be affected by genetic effects because inherent size variation within full-sibling groups tends to be lower than that between mixed-Sibling groups (Knutsen and Tilseth, 1985;Folkvord et al, 1994b).…”

Section: Genetic and Evolutionary Aspectsmentioning

confidence: 96%

Ontogeny of cannibalism in larval and juvenile fishes with special emphasis on Atlantic cod

Folkvord¹

1997

Early Life History and Recruitment in Fish Populations

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“…Pelagic and benthic morphs of Arctic charr within a lake are often genetically distinct and the behavioural and morphological differences may have a genetic component, because differences may persist when fish are reared under identical conditions (Smith & Skúlason 1996;Alexander & Adams 2004). Finally, inherited differences in the propensity for cannibalism are indicated by the fact that hybrids between a cannibalistic species (Poeciliopsis monacha) and a noncannibalistic species (P. lucida) show levels of cannibalism that are intermediate between those of the parental species (Thibault 1974).…”

Section: Inherited Differences In Foraging Methodsmentioning

confidence: 99%

Feeding Biology and Foraging

Jobling

Alanärä

Kadri

et al. 2012

Aquaculture and Behavior

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This chapter, the first of three dealing with feeding behaviour, describes the different kinds of food that fish eat and the many different ways in which this is harvested. The sensory cues used by fish to locate food are considered, as well as the trophic apparatus used to gather and consume food and the way these are adapted to the kinds of food being eaten. The development of effective feeding movements as fish grow and as their nutritional needs change and the role of genetic variation and differential experience in determining fish foraging are also considered. The benefits and costs of eating different food types and of using different foraging strategies and the way these are balanced to enhance Darwinian fitness are described. Attention then shifts to the implications of natural foraging behaviour for aquaculture. Information is given on how cultured fish species are fed and on problems for production, welfare and the environment that arise from the expression of natural feeding behaviour in an aquaculture context. Some effects of domestication and captive rearing on the foraging of cultured fish are also described. Finally, an account is given of possible solutions to these various problems, based on a knowledge of the natural behaviour of the species concerned.

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Genetics of cannibalism in a viviparous fish and its relationship to population density

Cited by 73 publications

References 9 publications

Intracohort cannibalism and methods for its mitigation in cultured freshwater fish

Intracohort cannibalism and methods for its mitigation in cultured freshwater fish

Ontogeny of cannibalism in larval and juvenile fishes with special emphasis on Atlantic cod

Feeding Biology and Foraging

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