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3 documents found tagged lion-tailed macaque [X]
  • Title
    Captive propagation of threatened primates - the example of the Lion-tailed Macaque Macaca silenus
    Type
    Journal Article
    Description
    Many conservation-oriented breeding programs are not likely to reach their goal of establishing self-sustaining populations. Some zoo biologists propagate to reconsider zoo-based conservation policies and strategies. The Lion-tailed Macaque is a flagship species for in situ conservation and a high priority species in captive propagation. This article reviews the captive management history of the Lion-tailed Macaque, identifies management patterns that might have negatively influenced the development of the programs, and proposes to use this analysis to initiate a new management perspective. In the North American captive Lion-tailed Macaque population under the Species Survival Plan (SSP), the strong reduction in population size and group sizes due to space problems might have contributed to a decrease in population viability. The population over two decades has declined from almost 300 to less than 100 individuals. In the European population under the European Endangered Species Program (EEP), population size was not limited and larger groups were advocated. The population grew slowly but steadily to a present size of more than 350 individuals over about 23 years. The effective population size has remained low in both SSP and EEP populations. A general conceptual framework that focuses on individuals and their phenotypes for in situ and ex situ conservation recently developed by field conservationists is briefly introduced. It is used to suggest improvements in the management of the Lion-tailed Macaque. It is concluded that the size and structure of a breeding population is to be decided so as to provide conditions and materials for successful reproduction rather than by the available zoo space only. For this, large groups and populations with representation of all age-sex classes are advocated. This would result in a further reduction in the number of species kept in zoos. It is indicated that zoo biology needs to develop new concepts that include a large spectrum of concepts of biology and knowledge about the adaptive potential of animal species under altered and fragmented conditions.
    Attribution
    Kaumanns W., Singh M., Silwa A. (2013). Journal of Threatened Taxa 14(5) pp. 4825-4839; doi:10.11609/JoTT.o3625.4825-39
  • Title
    The Lion-tailed Macaque Macaca silenus (Primates: Cercopithecidae): conservation history and status of a flagship species of the tropical rainforests of the Western Ghats, India
    Type
    Journal Article
    Description
    The Lion-tailed Macaque (Macaca silenus) is a threatened species inhabiting the rainforests of the Western Ghats mountain range in southern India. Once assessed to be less than a thousand individuals remaining in the wild habitats, the population is now estimated to be between 3000 and 3500 individuals. However, the rainforest habitats of the species are highly fragmented. During the past three decades or less, the population of this species has severely declined due to habitat degradation and illegal hunting in several areas of its occurrence. In situ conservation programs included notification of certain areas as Lion-tailed Macaque conservation regions. Several captive breeding programs have been initiated in order to have a viable captive population of the species. However, the analysis reveals that both in situ and ex situ conservation programs have not achieved the desired success and the species is even more endangered than it was a few decades ago. In this article, we discuss these conservation programs and suggest further measures for effective conservation of Lion-tailed Macaques.
    Attribution
    Singh M., Kaumanns W., Singh M., Sushma H.S., Molur S. (2009). Journal of Threatened Taxa 3(1) pp. 151-157; doi:10.11609/JoTT.o2000.151-7
  • Title
    Decline of suitablehabitats and conservation of the endangered lion-tailed macaque: land-cover change at a proposed protected area in Sirsi– Honnavara, Western Ghats, India
    Type
    Report
    Description
    Habitat fragmentation, lossof habitat and other anthropogenic activities have caused a population decline in many species, caused restriction in their distribution or even led to their local extinction. We attempted to understand the impact of such pressures on the newly identified and possibly the largest population of the endangered lion-tailed macaque, Macaca silenus in the Reserve Forests of Sirsi and Honnavara, Karnataka, using a temporal series of satellite images. Classified images showed a major increase in open area with a rapid decline in vegetation cover of about 11.5% in the wet evergreen forests over the last decade, amounting to a loss at the rate of 1.9% per year. We thus consider habitat protection and restoration of evergreen forest as the top priority along with the enforcement of conservation steps, including legal action against encroachment, extraction of timber and further fragmentation, to protect this critically important habitat of the lion-tailed macaque.
    Attribution
    Honnavalli N. Kumara , *, N. S. Pritham, K. Santhosh, V. Vijay Mohan Raj and Anindya Sinha