Winter Foraging Selectivity of Blackbuck in Semi-Arid Agricultural Landscapes

Abstract

The blackbuck (Antilope cervicapra), a native grazer of the Indian subcontinent, is increasingly confined to semi-arid, human-modified landscapes. Understanding its seasonal foraging patterns is essential for conservation planning in such habitats. This study examined winter dietary preferences of blackbuck across three agro-pastoral sites--Palla Salu, Rathgaon, and Sikandra Rao--in Aligarh district, Uttar Pradesh, India. Vegetation sampling recorded 4,125 plant individuals, with Prosopis juliflora and Cynodon dactylon dominating the landscape. However, micro-histological analysis of 45 fecal pellet samples identified 18 distinct plant species "comprising a total of 860 identifiable fragments". Of these, C. dactylon, Poa annua, Rumex pulcher, and Atriplex patula were significantly preferred. Despite high field abundance, P. juliflora was consistently avoided, likely due to structural or chemical deterrents. Interestingly, rare species such as Chenopodium vulvaria were overrepresented in the diet, suggesting nutrient-specific selectivity. Bonferroni-adjusted confidence intervals confirmed significant foraging preferences across all sites. These findings highlight the blackbucks adaptive and selective winter feeding strategy and the crucial role of native grasses and forbs during resource-scarce periods. We recommend the control of invasive species and restoration of native forage to enhance habitat quality and support long-term blackbuck conservation in fragmented, human-dominated ecosystems.