Citas bibligráficas
Capuñay, K., (2022). Composición de la dieta de las vicuñas (Vicugna vicugna) usando técnicas de microhistología en heces [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/5588
Capuñay, K., Composición de la dieta de las vicuñas (Vicugna vicugna) usando técnicas de microhistología en heces []. PE: Universidad Nacional Agraria La Molina; 2022. https://hdl.handle.net/20.500.12996/5588
@misc{renati/1114231,
title = "Composición de la dieta de las vicuñas (Vicugna vicugna) usando técnicas de microhistología en heces",
author = "Capuñay Sanchez, Katherine Susana",
publisher = "Universidad Nacional Agraria La Molina",
year = "2022"
}
The objective of the present study was to determine the diet composition of the vicuña (V. vicugna mensalis) at the end of the drought period (November 2019) in San Cristóbal de Lucanas Community, in the department of Ayacucho, Peru. Eight places were chosen where vicuñas were observed grazing in Pajonal, Césped, Pajonal-césped y Tolar-Césped. The inventory of the vegetation was carried out in transects of 120 meters and 38 species of plants were collected, which were prepared to obtain their epidermis and then the elaboration of an atlas of plant epidermis. For the diet’s botanical composition, fecal samples were collected in 80 dung piles, which were prepared for microhistological analysis and to determine the plants used in the vicuña diet. The diets botanical composition in the different types of vegetation was compared using the Wilcoxon Rank Sums test. The diet diversity was determined using the Shannon-Wiener index (H') while the selectivity of the diet was analyzed using the Ivlev index (E). The results showed that the main component of the vicuña's diet are grasses (63%-77%), while forbs, graminoids and shrubs presented variable participation in the types of vegetation. The diet diversity of the vicuña was moderate (H´= 2.30 - 2.44) and the selectivity was higher for Distichia muscoides (E=1), Eleocharis albibracteata (E=1) and Ephedra americana (E=0.8); and less for Aciachne sp. (E=-0.63), Carex sp. (E=-0.7) and Pycnophyllum molle (E=-0.37). It is concluded that the diet of the vicuña is dominated by grasses, while the other functional groups were an important complement.
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