Theses and Dissertations
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Item Sociality of Asiatic lion(Wildlife Institute of India, Dehradun, 2018) Chakraborty, Stotra; Jhala, Y.V.In the current study investigate (i) how resources are shared between male partners of Asiatic lion coalition (ii) the cost benefits for male lions in forming alliances (iii) female mating strategies and mate selection in lions. The study area is Gir Protected Area and the adjoining agro-pastoral landscape lying to the south-Western fringes of the PA.Item Reproductive strategy and behaviour of male Asiatic Lions.(Wildlife Institute of India, Dehradun, 2008) Meena, V.; Jhala, Y.V.; Chellam, RaviThe field study was carried out from April 2002 to February 2007 and the intensive study area covered 1075 km2 area of the Gir PA including Sanctuary West and National Park. i) Demographic changes in the Gir lion population were monitored using individual identification profiles for a period of four years. Lion population was estimated using mark-recapture models. Movement patterns, spacing mechanisms and land tenure system of four females (one radio-collared female), five adult males (two radio-collared males) and one subadult male (radio-collared) were obtained. Of these, seven individuals were monitored from 2002–2007. Lion diet was assessed both by intensive search across the study area and record of lion kills as well as analysis of scat. A questionnaire survey was conducted in twenty nesses that included seven nesses in central Gir and thirteen nesses in Gir-west to assess the livestock holding and causes of livestock mortality. Inter-kill intervals were obtained from direct observation of radio-collared lions.Item Land, lion and locals: Understanding the distribution of lions and large carnivore human interactions in the Greater Gir Landscape of Saurashtra(Wildlife Institute of India, Dehradun, 2025) Gogoi, Keshab; Jhala, Y.V.Apart from the Gir Protected Areas, Asiatic lions inhabit various coastal forest patches in Mangrol, Veraval, Kodinar, Mahua, and Rajula-Jafrabad areas. They also reside in Girnar Wildlife Sanctuary (WLS) and within human-dominated landscapes across Amreli, Junagadh, and Bhavnagar districts (Mitiyala WLS), as well as along the Shetrunji river, Hipavadli, Palitana, and Shihor. However, the presence of extensive townships, linear infrastructure, and urban development has led to the fragmentation of lion populations. This fragmentation restricts the efficient exchange of individuals across the matrix of multi-use human-dominated landscapes. Historical corridors that once connected hills, forests, and lion habitats, including protected and un-classed forests, have largely succumbed to agriculture and human settlements. To address this pressing issue, it is crucial to identify and conserve existing habitat corridors that connect these lion patches. Failure to do so could exacerbate repropuctive isolation, leading to genetic bottlenecks and reduced genetic diversity within lion populations. To tackle this challenge effectively, I utilized Circuitscape theory to model connectivity among habitat patches in the Saurashtra landscape at a scale of 1km². Additionally, I employed least-cost pathway tools to determine the shortest pathways with the least total costs. My analysis revealed varying levels of permeability among different lion habitats. For instance, the permeability between the coastal forests of Veraval-Sutrapada and Rajula with Gir PA was found to be high. Similarly, coastal patches around Mahua taluka exhibited high permeability with forest patches around Palitana. However, the permeability between Girnar and Gir Forest was moderate, indicating the need for interventions to maintain suitable lion movement. In the eastern part of the Gir protected area, there is notable connectivity between Mitiyala Wildlife Sanctuary and Gir, as well as other habitat patches along the Shetrunjay river. By prioritizing the identification and conservation of these critical habitat corridors, we can enhance connectivity among lion populations, mitigate the risk of genetic isolation, and safeguard the long-term survival of Asiatic lions in the Saurashtra landscapeItem Investigating the Social Structure of Female Asiatic Lions(Wildlife Institute of India, Dehradun, 2019) Borah, Doli; Kolipakam, Vishnupriya; Jhala, Y.V.In this study the social structure of lion prides in the Gir landscape through behavioural observation discussed. the study was carried out in and around Gir protected area of Gujarat. In India the Gir forest only has the last free ranging population of Asiatic lion.Item Factors Governing the Spatial Distribution and Density of Asiatic Lions (Panthera leo persica) in Gir Protected Area(Wildlife Institute of India, Dehradun, 2015) Gogoi, Keshab; Jhala, Y.V.; Qureshi, QamarThis study is based on population estimation and spatial distribution of Asiatic lion.