Diet of the Four-horned Antelope Tetracerus quadricornis (De Blainville, 1816) in the Churia Hills of Nepal

Abstract

The food composition of the Four-horned Antelope Tetracerus quadricornis was studied in the Churia Hills of Nepal during summer, monsoon and the winter seasons of 2012–2013. Microhistological technique was used to determine the diet. The Four-horned Antelope was found to be a mixed feeder feeding on trees, shrubs, forbs, grasses and climbers. Trees and shrubs contribute the major percentage of diet in all the three seasons. The Gramineae family is consumed in highest proportion. Mitragyna parvifolia, Bridelia retusa, Bambusa vulgaris, Hymenodictyon sp. and Ziziphus mauritiana are major tree species while Barleria cristata, Pogostemon benghalensis, Achyranthes sp., Clerodendrum viscosum are among shrubs. Ageratum conyzoides and Blumea virens are the main forbs Eulaliopsis binata and Imperata cylindrica are the principal grass species. Climber Trachelospermum lucidum is consumed in a small proportion. Grasses in monsoon were consumed distinctly at a higher percentage than during the other two seasons. The Four-horned Antelopes are concentrated feeders and browsers with a generalized feeding strategy. Similar studies need to be conducted in other landscapes and with sympatric and potential competitor species to understand its niche overlaps and degree of competition.

Keywords

• Bardia National Park
• Browser
• food composition
• generalist
• Gramineae, micro-histological analysis
• mixed feeder
• niche breadth.