Resumo

LORENZO, Consuelo; RIOJA, Tamara M.; CARRILLO, Arturo  e  CERVANTES, Fernando A.. Population fluctuations of Lepus flavigularis (Lagomorpha: Leporidae) at Tehuantepec Isthmus, Oaxaca, Mexico. Acta Zool. Mex [online]. 2008, vol.24, n.1, pp.207-220. ISSN 2448-8445.

Through six years Lepus flavigularis population density data were analyzed, at two localities south Tehuantepec Isthmus, Oaxaca, Mexico. The fluctuation index (FI) was calculated for this lagomorph in two localities. FI refers to ranges in fluctuations between maximum and minimum population levels evaluated according to the average number of years required for the changes to take place. Density was obtained by the fixed-width transect method. Lepus flavigularis exhibited low density values in both populations. High FI values in Montecillo Santa Cruz indicate high amplitude of change in population's size in a short period of time. This probably caused by extensive grazing and prescribed burnings. In San Francisco del Mar Viejo L. flavigularis exhibited low FI values, indicating low population changes over the same period of time. This probably because there is slight grazing and no prescribed burns.

Palavras-chave : population fluctuation; lagomorph; Lepus flavigularis; Tehuantepec Isthmus; Oaxaca; Mexico.

        · resumo em Espanhol     · texto em Inglês     · Inglês ( pdf )