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 response was
comparable to that ... 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 little variation in the sound intensity of an
individual's calls, but ... 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 of the animals in a pair; larger males guard for longer
than do small... hiện toàn bộ