Vigilance Behaviour in Grazing African Antelopes
Citations
100 citations
Cites background from "Vigilance Behaviour in Grazing Afri..."
...Earlier studies on ungulate-prey interactions in NorthAmerican [21,23-25], African [22,26,32] and European [31] ecosystems showed clear relationships between habitat visibility and predation risk effects....
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...Perceived predation risk and habitat visibility Earlier studies on ungulate-prey interactions in NorthAmerican [21,23-25], African [22,26,32] and European [31] ecosystems showed clear relationships between habitat visibility and predation risk effects....
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...The African and American ecosystems where relationships with visibility have been demonstrated are characterised by half-open landscapes, with large contrasts between low-visibility and high visibility habitats....
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...Ungulates in both North American and African ecosystems have been shown to avoid and to be more vigilant in habitats with low visibility and high incidence of escape impediments [21-26]....
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...Studies that showed a relation between ungulate vigilance and habitat visibility were carried out in open or half-open landscapes [21-26,32]....
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98 citations
93 citations
93 citations
Cites background from "Vigilance Behaviour in Grazing Afri..."
...This variable describes the availability of protective cover on winter ranges in the form of tall shrubs and trees (Peek et al. 1982, Underwood 1982)....
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92 citations
Cites background from "Vigilance Behaviour in Grazing Afri..."
...…attack rate: Krause 1994; but see Parrish 1989; vigilance: Lazarus 1978; Jennings and Evans 1980; Inglis and Lazarus 1981; Lipetz and Beckoff 1982; Underwood 1982; Alados 1985; DeRuiter 1986; Petit and Bildstein 1987; Janson 1990b; Burger and Gochfeld 1994; Steenbeek et al. 1999; Burger et al.…...
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...2004 for detailed theoretical and empirical analyses of Hamilton’s model), and numerous studies have found that mortality, per capita attack rate, and vigilance levels are higher in peripheral animals (mortality and attack rate: Krause 1994; but see Parrish 1989; vigilance: Lazarus 1978; Jennings and Evans 1980; Inglis and Lazarus 1981; Lipetz and Beckoff 1982; Underwood 1982; Alados 1985; DeRuiter 1986; Petit and Bildstein 1987; Janson 1990b; Burger and Gochfeld 1994; Steenbeek et al. 1999; Burger et al. 2000)....
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References
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Additional excerpts
...The 'selfish herd' (HAMILTON, 1971)...
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2,088 citations
"Vigilance Behaviour in Grazing Afri..." refers background in this paper
...Such habitat differences may have influenced the evolution of social and anti-predator behaviour in antelope (GEIST, 1974; JARMAN, 1974; ESTES, 1974) and may also affect both predator and prey behaviour on a day to day basis (SCHALLER, 1972; KRUUK, 1972; CURIO, 1976; EDMUNDS, 1974)....
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...If scanning reduces predation, it may take up less of the large animals' time either because both the number and the range of potential predators are smaller (JARMAN, 1974; GEIST, 1974), or because these antelope, being found in large groups, either are (a) less easy for a predator to find, (b) share vigilance with other group members (CARACAO et al....
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...The smaller and, according to JARMAN (1974), the more selective species are those which show significant correlations between the rate of looking and indices of feeding success, supporting the possibility that scanning forms a part of foraging behaviour....
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919 citations
"Vigilance Behaviour in Grazing Afri..." refers background in this paper
...Such habitat differences may have influenced the evolution of social and anti-predator behaviour in antelope (GEIST, 1974; JARMAN, 1974; ESTES, 1974) and may also affect both predator and prey behaviour on a day to day basis (SCHALLER, 1972; KRUUK, 1972; CURIO, 1976; EDMUNDS, 1974)....
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