1976
DOI: 10.2307/2401788
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Population Ecology and Response to Cropping of a Hippopotamus Population in Eastern Zambia

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Cited by 36 publications
(42 citation statements)
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“…Heavier culling would result eventually in an increase in calf production through decrease in calving interval and age in puberty. There was an indication that the latter occurred during the earlier study in the 1970s by Marshall and Sayer (1976) when 5 percent of females in the seven to eleven year age group were pregnant in 1970 and 20 percent in 1971. These data may, however resulted from the marked difference in rainfall that occurred in the two years; the rainfall in 1970 -1971 was double that of 1969 -1970.…”
Section: Cullingmentioning
confidence: 94%
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“…Heavier culling would result eventually in an increase in calf production through decrease in calving interval and age in puberty. There was an indication that the latter occurred during the earlier study in the 1970s by Marshall and Sayer (1976) when 5 percent of females in the seven to eleven year age group were pregnant in 1970 and 20 percent in 1971. These data may, however resulted from the marked difference in rainfall that occurred in the two years; the rainfall in 1970 -1971 was double that of 1969 -1970.…”
Section: Cullingmentioning
confidence: 94%
“…It was the biased sex ratio in favour of females that promoted increased recruitment after culling. Studies on the impact of culling on hippopotamus population in the Luangwa valley by Marshall and Sayer (1976) found a rate of increase of 4.3 percent per annum, which was derived from data for the Nsefu area (blocks A-C: Figure 1) where annual counts were carried out from 1953 to 1966, which later increased to 5.8 percent after culling. The mean age of puberty for females also declined leading to more prevalences of pregnancy and increased births after culling (Sayer and Rhaka, 1974).…”
Section: Cullingmentioning
confidence: 99%
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