scholarly journals Factors affecting home range size and overlap in Akodon azarae (Muridae: Sigmodontinae) in natural pasture of Argentina

1999 ◽  
Vol 44 ◽  
pp. 37-44 ◽  
Author(s):  
Jose W. Priotto ◽  
Andrea R. Steinmann
Keyword(s):  
Home Range ◽  
Home Range Size ◽  
Range Size ◽  
Factors Affecting ◽  
Natural Pasture ◽  
Akodon Azarae

Mating strategies of Pampean mouse males

2012 ◽  
Vol 62 (4) ◽  
pp. 381-396 ◽  
Author(s):  
Florencia Bonatto ◽  
Daniela Gomez ◽  
Andrea Steinmann ◽  
José Priotto
Keyword(s):  
Body Size ◽  
Sexual Dimorphism ◽  
Home Range ◽  
Space Use ◽  
Home Range Size ◽  
Mating Strategies ◽  
Range Size ◽  
Home Ranges ◽  
Males And Females ◽  
Akodon Azarae

Patterns of space use and sexual dimorphism are frequently used to infer mating systems. We examined body size and home range size and intra- and intersexual overlap degree in order to elucidate mating strategy of Akodon azarae males. We studied spacing patterns using 113 and 129 home ranges established by males and females, respectively, in four 0.25 ha enclosures during the breeding season. Significant differences between sexes in home range size and overlap degree were found. Male home ranges were always larger than those of females. We observed exclusive space use among males and among females. Considering only those males that shared their home ranges with females, average intersexual overlap value was about 50%. Males mainly overlap their home ranges with home ranges of two or three females. Significant differences in body size were found between males and females, with males being larger. We concluded that space use and sexual dimorphism in this species is consistent with patterns characteristic of polygynous rodents, and we propose a polygynous system in A. azarae.

scholarly journals Factors Affecting Home Ranges of Red Foxes in Ikh Nart Nature Reserve, Mongolia

2012 ◽  
Vol 10 (1-2) ◽  
pp. 51-58
Author(s):  
Tserendorj Munkhzul ◽  
◽  
Bayarbaatar Buuveibaatar ◽  
James D. Murdoch ◽  
Richard P. Reading ◽  
...  
Keyword(s):  
Home Range ◽  
Nature Reserve ◽  
Radio Telemetry ◽  
Home Range Size ◽  
Range Size ◽  
Home Ranges ◽  
Red Foxes ◽  
Factors Affecting ◽  
Intrinsic Factors ◽  
Range Dynamics

Changes in red fox home range size in relation to environmental and intrinsic factors were studied using radio-telemetry during 2006–2008 in Ikh Nart Nature Reserve, southeastern Mongolia. We captured a total of 12 red foxes (8 females and 4 males) and fi tted them with VHF radio-collars. Marked animals were tracked up to fi ve times a week to estimate home ranges. We also trapped small mammal and insects in different biotopes for 3 years to estimate relative abundance of prey. Our results showed that mean individual home range sizes varied widely and differed among years. There was variation in home ranges between adults versus juveniles, but no signifi cant difference was found between males versus females. In addition, mean home range size did not differ seasonally for pooled years. Variation in home ranges was best explained by a model that included covariates of year and age. We suggest that spatiotemporal changes in resource availability across years infl uenced home range dynamics of red foxes in our study.

Factors affecting intraspecific variation in home range size of a large African herbivore

2012 ◽  
Vol 27 (10) ◽  
pp. 1523-1534 ◽  
Author(s):  
Robin Naidoo ◽  
Pierre Du Preez ◽  
Greg Stuart-Hill ◽  
L. Chris Weaver ◽  
Mark Jago ◽  
...  
Keyword(s):  
Home Range ◽  
Intraspecific Variation ◽  
Home Range Size ◽  
Range Size ◽  
Factors Affecting

Factors Affecting Home Range Size and Movements of Post-Fledging Grassland Birds

2008 ◽  
Vol 120 (1) ◽  
pp. 120-130 ◽  
Author(s):  
Kimberly M. Suedkamp Wells ◽  
Joshua J. Millspaugh ◽  
Mark R. Ryan ◽  
Michael W. Hubbard
Keyword(s):  
Home Range ◽  
Grassland Birds ◽  
Home Range Size ◽  
Range Size ◽  
Factors Affecting

Factors affecting the home range of Dinaric-Pindos brown bears

2021 ◽  
Author(s):  
Daniele De Angelis ◽  
Djuro Huber ◽  
Slaven Reljic ◽  
Paolo Ciucci ◽  
Josip Kusak
Keyword(s):  
Home Range ◽  
Brownian Bridge ◽  
Home Range Size ◽  
Range Size ◽  
Home Ranges ◽  
Supplemental Feeding ◽  
Mixed Effect ◽  
Brown Bears ◽  
Factors Affecting ◽  
Feeding Sites

Abstract Studying how animals interact with their environment is fundamental to informing conservation and management efforts, especially when examining large, wide-ranging carnivores in human-dominated landscapes. We hypothesized that the home ranges of bears are configured to exploit supplemental food (corn) and avoid people. In 2004–2016, we tracked 10 brown bears from the Dinaric-Pindos population using GPS telemetry, then used Brownian bridge movement models to estimate their home ranges. We related seasonal home range size to circadian period and density of supplemental feeding sites using generalized linear mixed-effect models. We also used ecological-niche factor analysis to study habitat composition within home range core areas in study areas characterized by different levels of human encroachment. We found that home range size was inversely related to density of supplemental feeding sites, and bears had larger home ranges at night (x̅ = 103.3 ± 72.8 km2) than during the day (x̅ = 62.3 ± 16.6 km2). Our results also revealed that bears living in more human-influenced areas concentrated their use far from human settlements and agricultural lands but stayed close to supplemental feeding sites. Our data suggest that bears alter their space-use patterns at the home range level in response to anthropogenic land use and food availability.

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