The Adaptive Significance of Avian MobbingWiley - Tập 48 Số 2 - Trang 184-202 - 1978
Eberhard Curio, Ulrich Ernst, Willy Vieth
AbstractThe “Cultural Transmission Hypothesis” and the “Alerting Others Hypothesis” of enemy recognition in birds was examined in mobbing experiments with captive blackbirds. Observer birds learned to mob a novel non‐raptorial bird more strongly as a consequence of witnessing another bird mob strongly at the site of presentation. Strength of the observer's enhanced...... hiện toàn bộ
Acoustic Spacing by Breeding Males of Uperoleia rugosa (Anura: Leptodactylidae)Wiley - Tập 64 Số 3-4 - Trang 283-297 - 1984
Jeremy Robertson
Abstract and SummaryMales of Uperoleia rugosa called mainly at night in aggregations of regularly distributed males. The advertisement calls had a uniform sound pressure field and their attenuation closely followed the inverse square law, but excess attenuation by absorption and reflection in vegetation also occurred. There was ...... hiện toàn bộ
The Effects of Size on the Mating Decisions of Gammarus pulex (Crustacea, Amphipoda)Wiley - Tập 64 Số 2 - Trang 174-184 - 1984
Paul I. Ward
Abstract and SummaryThe breeding system of the freshwater amphipod, Gammarus pulex, has a precopulatory female guarding phase by which a male ensures his presence when the female moults and he can fertilize her brood and also prevent other males gaining access to her. The duration of the guarding phase is influenced by the sizes...... hiện toàn bộ