Stability of white-tailed doe parturition ranges on a refuge in east-central Illinois

1992 ◽  
Vol 70 (5) ◽  
pp. 968-973 ◽  
Author(s):  
Charles M. Nixon ◽  
Lonnie P. Hansen ◽  
Paul A. Brewer ◽  
James E. Chelsvig

Stability and retention of parturition sites were examined for 17 white-tailed does (Odocoileus virginianus) radio-marked on an 800-ha forested area in Piatt County, east-central Illinois. Pre- and post-natal home range sizes were not significantly correlated with density of females, age of doe, litter size (postnatal range only), or sex of litter. As females aged, parturition sites moved closer to prenatal centers of home range activity (P < 0.02), and overlap of both pre- and post-natal home range boundaries increased in consecutive years (P < 0.001). Postnatal core areas of related females evidenced considerable overlap, whereas those of unrelated does were discrete. Breeding does used upland successional forests (< 60 years old) more than expected and bottomland forests less than expected (P < 0.05) as sites for parturition. Through seasonal movements, including migratory and dispersal behaviors, does in east-central Illinois, where forests are scarce, use all available sites suitable for parturition. Selection and retention of these parturition sites promote the development of matriarchal social groups, which ensures continued use of these sites by related females.

Author(s):  
Balázs Trencsényi ◽  
Michal Kopeček ◽  
Luka Lisjak Gabrijelčič ◽  
Maria Falina ◽  
Mónika Baár ◽  
...  

The interwar radicalization of politics in East Central Europe was linked to the proliferation of a discourse of crisis. Symptoms of crisis could be localized in certain social groups, institutions, and social relations, such as the generational cleavage. Since the topos of crisis was not bound to any particular ideology, the very same discourse was used by liberal and leftist intellectuals as well. Nevertheless, the most plausible ideological framework offering a way out of the crisis seemed to be the “conservative revolution,” promising to restore the continuity of traditions that had been interrupted by the breakthrough of modernity. This led to the proliferation of “national metaphysics,” defining the specificity of the respective nation with ontological categories. Another face of this “conservative revolution” was the politicization of religion, linked to the renewed interest in myth and popular religiosity. At the same time, there was also a conservative anti-totalitarian stance and, in a few cases, a left-wing reorientation of certain religious subcultures.


2020 ◽  
pp. 1-33
Author(s):  
Andrea L. Baden ◽  
Jelisa Oliveras ◽  
Brian D. Gerber

Ranging behavior is one important strategy by which nonhuman primates obtain access to resources critical to their biological maintenance and reproductive success. As most primates live in permanent social groups, their members must balance the benefits of group living with the costs of intragroup competition for resources. However, some taxa live in more spatiotemporally flexible social groups, whose members modify patterns of association and range use as a method to mitigate these costs. Here, we describe the range use of one such taxon, the black-and-white ruffed lemur (<i>Varecia variegata</i>), at an undisturbed primary rain forest site in Ranomafana National Park, Madagascar, and characterize sex differences in annual home range area, overlap, and daily distances traveled. Moreover, we characterize seasonal variability in range use and ask whether ranging behaviors can be explained by either climatic or reproductive seasonality. We found that females used significantly larger home ranges than males, though sexes shared equal and moderate levels of home range overlap. Overall, range use did not vary across seasons, although within sexes, male range use varied significantly with climate. Moreover, daily path length was best predicted by day length, female reproductive state, and sex, but was unrelated to climate variables. While the patterns of range use and spatial association presented here share some similarities with “bisexually bonded” community models described for chimpanzees, we argue that ruffed lemurs best conform to a “nuclear neighborhood” community model wherein nuclear (core) groups share the highest levels of home range overlap, and where these groups cluster spatially into adjacent “neighborhoods” within the larger, communally defended territory.


Author(s):  
Rafael Mares ◽  
Ricardo S. Moreno ◽  
Roland W. Kays ◽  
Martin Wikelski

Home range shifts prior to natal dispersal have been rarely documented, yet the events that lead a subadult to abandon a portion of its home range and venture into unfamiliar territories, before eventually setting off to look for a site to reproduce, are probably related to the causes of dispersal itself. Here, we used a combination of manual radio-tracking and an Automated Radio Telemetry System to continuously study the movements of a subadult male ocelot (Leopardus pardalis), a solitary carnivore with sex-biased dispersal, on Barro Colorado Island, Panama, for 18 months from May 2003 through October 2004. The subadult ocelot?s parents were also radio-tracked to record possible parent-offspring interactions within their home ranges. At the age of ca. 21 months the subadult gradually began to shift its natal home range, establishing a new one used until the end of the study, in an area that had previously been used by another dispersing subadult male. Only three parent-offspring interactions were recorded during the four months around the time the range-shift occurred. The apparent peaceful nature of these encounters, along with the slow transition out of a portion of his natal home range, suggest the subadult was not evicted from his natal area by his parents. The timing of the shift, along with the subadult?s increase in weight into the weight range of adult ocelots four months after establishing the new territory, suggests that predispersal home range shifts could act as a low risk and opportunistic strategy for reaching adult size, while minimizing competition with parents and siblings, in preparation for an eventual dispersal into a new breeding territory.


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