Spatial Organization, Activity, and Social Interactions of Culpeo Foxes (Pseudalopex culpaeus) in North-Central Chile

Análisis geográfico y conservación del zorro andino Lycalopex culpaeus (Mammalia, Canidae) en Colombia

“…Este hecho está soportado por los registros recientes en áreas intervenidas, donde individuos de la especie son detectados constantemente en zonas de asentamientos humanos rurales y potreros. Para otros países se ha estimado que la especie incluye hasta en un 85% de su ámbito de acción a zonas cercanas a habitaciones humanas (Salvatori et al, 1999) y es generalista en su dieta (Walker et al, 2007) por lo que puede subsistir sin depender de animales domésticos. Con respecto a la cacería por retaliación, es necesario resaltar que su impacto sobre la especie no fue directamente evaluado en este trabajo, sin embargo en las zonas visitadas otros carnívoros (e.g.…”

Estimating Temporal Independence of Radio-telemetry Data on Animal Activity

“…The mean range value was 110 min (n"33; 95% con"dence limits after lognormal transformation: 89}134). Comparison with the independence interval estimated by methods based on spatial movement of the animals (336 min, Salvatori et al, 1999), showed that the variogram estimate di!ered signi"cantly from the spatial estimate (paired t-test, t"!2.8; d.f. "6; p(0.05).…”

“…Data were collected on individual animals over a 24-hr schedule, with binary readings 0}1 (0"non-active, 1"active) at 15-min intervals, yielding up to 96 observations in each session (Salvatori et al, 1999;Taber et al, 1993). Percentages of activity in the 24 hr were computed hourly as the proportion of active readings.…”

“…In six cases, the problem of data independence was tackled in a subjective way, and an independence interval was set according to the author's perception. In seven studies the time for independence was estimated by objective methods, including the runs test (Branch, 1993), the Markov chains (Arthur & Krohn, 1991), or by applying the same independence interval calculated for spatial analysis of ranging behaviour (Salvatori et al, 1999).…”

Diet, dietary selectivity and density of South American grey fox, Lycalopex griseus, in Central Chile

“…We did not consider the rate of feces decay due to the favorable weather conditions in spring-summer in Lago Peñuelas NR. The way in which L. griseus uses space makes it highly probable that the transects in the study area were used by more than 1 individual, due to the overlapping of their territories (documented for L. culpaeus by Salvatori et al 1999). Fecal pellets collected (N = 52) were dried at 60 °C for 48 h, measured, weighed, separated, broken apart and observed in a stereo microscope 10× to identify the prey consumed.…”