Further Declines in Rhesus Populations of India

Southwick, Charles H.; Siddiqi, M. Farooq; Cohen, Jerry A.; Oppenheimer, John R.; Khan, Jabir Hasan; Ashraf, Syed Waseem Ahmad

doi:10.1007/978-3-642-68300-8_12

Cited by 5 publications

(1 citation statement)

References 7 publications

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“…The Chhatari population has been growing slowly since 1959 [Southwick et al, , 1982, but it is in this population that infants spend the greatest amount of time near their mothers and the least amount of time at dis tances > 3 m ( fig. 3d), the reverse of what one would expect if kin groups were responsi ble for the observed differences.…”

Section: Kin Groupsmentioning

confidence: 99%

Structural Diversity and Mother-Infant Relations among Rhesus Monkeys in India and Nepal

Johnson¹,

Southwick²

1984

IJFP

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Mother-infant spatial relations were examined within three populations of rhesus monkeys (Macaca mulatta) occupying habitats fundamentally different in their physical structure. The development of infant independence was found to be remarkably similar across habitats, and the few observed differences can be related to differences in the risk of infant mortality at each site. Significant differences were found in the structural environments to which infant rhesus were exposed, but these differences do not correlate with the observed developmental differences. We conclude that the environmental structure as observed in this field study exerts little influence upon early infant development.

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Section: Kin Groupsmentioning

confidence: 99%

Structural Diversity and Mother-Infant Relations among Rhesus Monkeys in India and Nepal

Johnson¹,

Southwick²

1984

IJFP

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Population trends of the mantled howler groups of La Pacifica, Guanacaste, Costa Rica

Clarke

Zucker

Scott

1986

American J Primatol

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A complete survey of La Pacifica in Guanacaste Province, Costa Rica was conducted in July 1984 in order to determine whether the howler (Alouatta palliata) population had declined since 1972 as a result of deforestation. During the 6-day survey, 257 howlers were located, representing 16 different social groupings and nine solitary animals. The total number of howlers, the number and location of groups, and the age-sex composition were very similar to a 1972-1976 survey of the same population. Age-sex composition of La Pacifica howler groups was similar to those of another population of mantled howlers in Costa Rica and of populations in Mexico and in Panama, although La Pacifica had a higher mean number of adult females per group. There was no evidence to support the hypothesis that the La Pacifica howler population has declined in recent times.

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Partial recovery and a new population estimate of rhesus monkey populations in India

Southwick

Siddiqi

1988

American J Primatol

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The purpose of this field study has been to assess major changes in rhesus monkey populations of north central India over a period of 28 yrs from 1959 to 1986. Population censuses have been done in Aligarh District three times per year, and extensive regional surveys were done in 1959–1960, 1964–1965, 1977–1978, and 1985–1986. Throughout the 1960s and 1970s, rhesus populations in India declined more than 90%, from an estimated 2 million animals in 1960 to approximately 180,000 by 1980. These declines were attributed to increasing agricultural pressures in India, loss of primate habitats, less protection for monkeys, and high levels of trapping. In the 1970s, as India's agricultural production rose and stronger wildlife conservation programs developed, local populations of rhesus began to increase. These increases became more prominent after 1978, when India imposed a ban on export of monkeys. By 1985 a population in Aligarh District had returned to its 1960 level in total population size, although the number of groups remained low. Other local populations showed even more striking growth and greatly exceeded former levels. Some areas of India, however, have shown no improvement in rhesus populations. Overall, extensive field surveys of rural habitats in 1985–1986 showed a 53% recovery in the number of rhesus groups, and a 129% recovery in total rhesus from their low points in 1977–1978. We estimate the rhesus population of India in 1985 in the vicinity of 410,000–460,000 individuals.

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Further Declines in Rhesus Populations of India

Cited by 5 publications

References 7 publications

Structural Diversity and Mother-Infant Relations among Rhesus Monkeys in India and Nepal

Structural Diversity and Mother-Infant Relations among Rhesus Monkeys in India and Nepal

Population trends of the mantled howler groups of La Pacifica, Guanacaste, Costa Rica

Partial recovery and a new population estimate of rhesus monkey populations in India

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