Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 4

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Inter-male aggression in relation to female availability and residence status in corn mice Calomys musculinus

100%
Steinmann A. R., Priotto J. W.
Acta Theriologica
|
2011
|
tom 56
|
nr 1
We conducted an experimental study to test the hypothesis that, at low female availability, males show intrasexual aggressive behaviour and home range owners are more aggressive than home range intruders. Using field dyadic arena test, we carried out 35 male–male trials in four 0.25 ha enclosures, two male-biased (experimental enclosures) and two unbiased (control enclosures). Dyadic encounters were conducted between unrelated and sexually mature males of similar weight and age which established home ranges in the same enclosure at the same trapping session. Each inter-male encounter was performed in the home range of one of the opponents between the home range owner and a home range intruder. When sex ratios were male-biased, inter-male amicable behaviour was absent and we found significant rates of inter-male aggressiveness, being home range owners much more aggressive than intruders. In the unbiased enclosures, inter-male encounters resulted mainly in noninteractive or amicable interactions. We found that inter-male aggression varied in relation to female availability being more evident in home range owners.
2

Factors affecting home range size and overlap in Akodon azarae [Muridae: Sigmodontinae] in natural pasture of Argentina

100%
Priotto J. W., Steinmann A. R.
Acta Theriologica
|
1999
|
tom 44
|
nr 1
Differences in home range size in relation to sex, age, breeding and non-breeding periods were studied Home range size and overlap were examined at different den­sities values in populations of Akodon azarae (Fischer, 1829) on railway banks in southern Cordoba Province (Argentina). The sampling was carried out between October 1994, and February 1997, using the capture-mark-recapture method. Home range size in A, azarae was determined by sex and breeding period, and it was independent of the observed density values. Home range size of males was always larger than that of femaies. Increase of population density during the breeding period affected the degree of intersexual overlap of home range,
3

Size and overlap of home range in Calomys musculinus [Muridae: Sigmodontinae]

80%
Steinmann A. R., Priotto J. W., Castillo E. A., Polop J. J.
Acta Theriologica
|
2005
|
tom 50
|
nr 2
Home range size and overlap ofCalomys musculinus (Thomas, 1913) was examined in relation to sex and breeding periods. The study was carried out in four 0.25 ha enclosures, in a natural pasture, between October 2002 and July 2003. The four enclosures functioned as independent populations and each was considered a replicate. The capture, mark and recapture method was used. Home range size and overlap inC. musculinus depended on sex and period. Home range size of males was always larger than that of females. Females showed a small degree of intra-sexual home range overlap during the breeding period. In general, male home ranges overlapped with females. We conclude that differences in home range size inC. musculinus is determined by sex and breeding period. Moreover, the degree of inter- and intra-sexual home range overlap during the breeding period suggests that both males and females ofC. musculinus use space differently. Females did not share their home range with other females, while males fully shared it with both sexes, and male spacing is influenced by the distribution of females. A promiscuous-polygynous mating system is suggested forC. musculinus.
4

Agricultural land-use intensity and its effects on small mammals in the central region of Argentina

61%
Gomez M. D., Coda J., Simone I., Martinez J., Bonatto F., Steinmann A. R., Priotto J.
Acta Theriologica
|
2015
|
tom 60
|
nr 4
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.