Group territoriality in two populations of African lions
Article Abstract:
The trait for male and female lions to declare their territory by roaring has been used in a study designed to assess group territoriality in two populations African lions. Lionesses in the Serengeti region of Tanzania use the number of opponents they hear roaring to assess the likelihood of winning a territory contest in order to avoid unwinnable disputes. A comparison, using playback experiments, between the lionesses of the Serengeti and their counterparts in the Ngorongoro Crater, living at much higher densities, shows that lionesses in the latter group are more aggressive than those on the plain, probably due to the greater difficulty in holding territory.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1997
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Female dispersion and the evolution of monogamy in the dik-dik
Article Abstract:
It is widely believed that monogamy in mammals has evolved because males are unable to defend more than one, widely dispersed, female range. A new study investigates the theory in the monogamous antelope Kirk's dik-dik. The study shows substantial variations in territory quality and finds no link between reproductive success and territory size. It is concluded that female dispersion does not influence monogamy and that monogamy may have evolved because of male mate guarding.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1997
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Small-male advantage in the territorial tropical butterfly Heliconius sara (Nymphalidae): A paradoxical strategy?
Article Abstract:
A natural territorial advantage associated with small size is reported for the first time, in males of the aposematic nymphalid butterfly Heliconius sara in subtropical Brazilian forest. Their wings are around 3% shorter that males caught away from mating territories. Smaller resident returned to territories over longer periods and it was observed that intruders will retreat faster when confronting smaller than average territory owners.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1998
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