Comparative foraging ecology of Madagascar vangids (Vangidae)
Comparative foraging ecology of Madagascar vangids (Vangidae)
复制标题
马达加斯加尖吻鳄（Vangidae）的比较觅食生态学
DOI：
10.1111/j.1474-919x.1996.tb04340.x
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发表时间：
2008
期刊：
影响因子：
2.1
通讯作者：
Kazuhiro Eguchi
中科院分区：
文献类型：
--
作者：
S. Yamagishi;Kazuhiro Eguchi
象科是马达加斯加特有的科，有11属14种。在1989年8月至11月和1990年9月至11月期间，对13种跳蚤的觅食行为进行了调查。利用夹持工具的类比，将这些血管按其喙的形状分为六种类型：(1)钳子。(2)无线电钳子，(3)强力钳子，(4)钳子，(5)标准型和(6)平钳型。我们识别出七个觅食生态位：(A)采集树冠，(B)一般，(C)抓地，(D)树干/树枝探测，(E)树叶和树枝/树枝采集/探测，(F)树叶和树枝/树枝采集和(G)树干采集生态位。具有相同觅食生态位的两个或两个以上共存物种的喙类型不同。那些利用类似资源的野兽在它们的喙类型、地理范围和/或觅食生态位上被分开，想必是为了避免激烈的竞争。一些野生动物物种部分占据了生态位，而其他地方的啄木鸟将填补这一生态位。
The Vangidae, an endemic family in Madagascar, contains 14 species in 11 genera. The foraging behaviour of 13 species of vangids was investigated during the periods August-November 1989 and September-November 1990. These vangids are grouped into six bill types according to their bill shape, using the analogy of gripping tools: (1) forceps. (2) radio pliers, (3) strong pinchers, (4) pliers, (5) standard and (6) flat forceps types. We recognized seven foraging niches: (A) canopy-gleaning, (B) general, (C) ground-snatching, (D) trunk/ branch-probing, (E) leaf and twig/branch-gleaning/probing, (F) leaf and twig/branch-gleaning and (G) trunk-gleaning niches. Two or more coexisting species with the same foraging niche differed in their bill types. Those vangids that exploited similar resources segregated in their bill types, geographic ranges and/or foraging niches, presumably to avoid severe competition. Several vangid species partially occupied the ecological niche that would be filled by woodpeckers elsewhere.