Vigilance Behaviour in Grazing African Antelopes
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Cites background from "Vigilance Behaviour in Grazing Afri..."
...Since they need to have their heads down to reach the vegetation, vigilance and feeding tend to be negatively correlated in grazing animals (Underwood 1982), and since red deer are generally more vigilant in grassland (Jayakody et al. 2008), foraging may be disturbed to a greater extent there than…...
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...Since they need to have their heads down to reach the vegetation, vigilance and feeding tend to be negatively correlated in grazing animals (Underwood 1982), and since red deer are generally more vigilant in grassland (Jayakody et al....
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26 citations
Cites background from "Vigilance Behaviour in Grazing Afri..."
...However, in ungulates, although many theoretical and field studies have provided important insights into the vigilanceforaging relationship (Underwood 1982; Berger and Cunningham 1988; Elgar 1989; Fortin et al. 2004), this kind of approach remains extremely rare (but see Berger 1991)....
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...Empirical data support both higher levels of predation (Balmford and Turyaho 1992; Lingle 2001) and higher vigilance rates (Jennings and Evans 1980; Underwood 1982; Burger and Gochfeld 1994) for individuals on the edge of a group....
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References
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Additional excerpts
...The 'selfish herd' (HAMILTON, 1971)...
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"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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