TEMPORAL PATTERNS IN THE EMERGENCE BEHAVIOR OF PIPISTRELLE BATS, PIPISTRELLUS-PIPISTRELLUS, FROM MATERNITY COLONIES ARE CONSISTENT WITH AN ANTIPREDATOR RESPONSE
TEMPORAL PATTERNS IN THE EMERGENCE BEHAVIOR OF PIPISTRELLE BATS, PIPISTRELLUS-PIPISTRELLUS, FROM MATERNITY COLONIES ARE CONSISTENT WITH AN ANTIPREDATOR RESPONSE
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DOI：
10.1016/0003-3472(95)80030-1
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发表时间：
1995-11-01
期刊：
影响因子：
2.5
通讯作者：
KERSLAKE, JE
中科院分区：
文献类型：
--
作者：
SPEAKMAN, JR;STONE, RE;KERSLAKE, JE
许多种类的蝙蝠以非随机的方式从母系群体中诞生。然而，量化出现与随机的差异程度由于出现强度的潜在变化而变得复杂。本文采用克服这些分析困难的经验方法来研究蝙蝠出现模式的功能性质。 1992 年和 1993 年夏天，对包含 102 至 976 只蝙蝠的两个大蝙蝠群的羽化行为进行了监测。两个群落都有两个主要出口孔，蝙蝠从一个孔穿过第二个孔的表面。在两个群体中，第一个孔的出现事件触发了第二个孔的事件，这表明聚集的出现模式不是瓶颈假象。在羽化的前半段，当光照水平较高时，丛生程度最大，表明其具有抗捕食功能。这种模式并不是傍晚出现较高强度的结果。 (C) 1995 动物行为研究协会
Many species of bats emerge from maternity colonies in a non-random manner; however, quantifying the extent to which the emergence differs from random is complicated by the underlying variation in intensity of the emergence. In this paper an empirical method which overcomes these analytical difficulties is used to examine the functional nature of the pattern of bat emergence. The emergence behaviour from two large colonies of pipistrelle bats containing between 102 and 976 individual bats was monitored during the summers of 1992 and 1993. Both colonies had two primary exit holes with bats from one hole crossing the face of the second hole. Emergence events at the first hole triggered events at the second hole at both colonies demonstrating that the clumped emergence pattern was not a bottleneck artefact. The extent of clumping was greatest during the first half of the emergence, when light levels were high, suggesting an anti-predation function. This pattern was not a consequence of a higher emergence intensity early in the evening. (C) 1995 The Association for the Study of Animal Behaviour