1,721,240 research outputs found
Temporal relationships, transitions and structure of the behavioural repertoire in male Apennine chamois during the rut
No full textThe reproductive behaviour of adult male Rupicapra pyrenaica ornata was studied in the Abruzzo National Park. Older males grouped and succesesfully defended larger harems, containing a greater number of prime females. Males herded females mainly by the Head Down threat, in both the still and moving postures. The aggressive connotation of the Snort, a usually assumed "alarm' call, is discussed in the harem formation context. The courtship sequences is described. The function of female reactive urination is evaluated in this context. A harem holder did not only have to prevent females from leaving, but he had also to deal with male competitors. -from Author
La socialità nel camoscio appenninico Rupicapra pyrenaica ornata (Neumann, 1899): confronto tra i sessi e suggerimenti di gestione
No full textSexual differences in aggressive behaviour of the Apennine chamois, Rupicapra pyrenaica ornata (Neumann, 1899)
No full textThe aggressive behaviour of female and male Apennine chamois has been compared quantitatively. As opposed to what males did, females significantly attacked each other less often; preferred to gore body regions with a low risk of lethal injury, made a greater use of direct forms of aggression; seldom interacted with the opponent before attacking and gored it more often. Front clashing and fighting were very rare in both sexes. Females live in resident kin‐groups, while young males disperse and adults are solitary. To a large extent habitat separation occurs between the sexes. Sexual differences in patterns of aggressive behaviour may be related to the different gregariousness of females and males, probably influenced by resource availability in the habitats they use. Chamois sexes are nearly monomorphic, females bearing slightly less hooked horns than males. This species may have evolved strongly hooked weapons as a first step to advanced wrestling or butting type horns from the ancestral stiletto shape, as goats and sheep, as well as deer, have done. 1990 Blackwell Verlag Gmb
Clues for dominance in female chamois: age, weight, or horn size?
No full textA study of social interactions among female Apennine chamois Rupicapra pyrenaica ornata was made in Abruzzo National Park, central Italy, between 1981 and 1982. A linear hierarchy among females was observed, rank order being highly correlated with age, weight, and horn size. An analysis of which physical clues are used by females to assess dominance suggests that body weight may be the most important attribute. The percentages of threats and dominance displays decrease beyond 7–8 years of age when females usually start to lose weight, whereas horns keep growing throughout life. Furthermore, the greater effect of weight compared to that of horn size on the rank/age correlation supports our conclusion. Copyright © 1991 Wiley‐Liss, Inc., A Wiley Company
Intrasexual social behaviour of female Apennine chamois
No full textSeventeen behaviour patterns used in female-female interactions were analysed for both their frequencies and temporal relationships in Apennine chamois. Withdrawing and the Approach built up, respectively, 38.4 and 21.3% of all activities. All other behaviour patterns showed much smaller frequencies (< 8%). A close relationship was found between Approach, Lipcurl, Head down, Side Display and Stare: all aggressive patterns. Butt, Chase, Hook and Rush proved to be associated, confirming their intensive bellicose quality. The communicative function of female Lipcurl has been confirmed as an aggressive ritualized behaviour, perhaps of "male mimicry", with elements of submissive behaviour. Low-stretch, Reactive Urination and Withdrawing grouped logether as submissive patterns. Intrasexual female behavioural sequences appeared much more predictable than those of males, which is probably related to the different gregariousness patterns of the two sexes. © 1993 Taylor & Francis Group, LLC
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