A Comparative Study of the le Conte's and Sharp-Tailed Sparrows
A Comparative Study of the le Conte's and Sharp-Tailed Sparrows
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孔特麻雀与尖尾麻雀的比较研究
DOI：
10.2307/4083496
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发表时间：
1969
期刊：
影响因子：
--
通讯作者：
J. Murray
中科院分区：
文献类型：
--
作者：
J. Murray
许多生态学家认为，种间竞争将导致竞争物种中的一个被淘汰，或者导致差异的进化，从而使两个物种在没有竞争的情况下共存（Lack, 1954, 1966; Mayr, 1963）。这激发了对同域物种生态学的大量研究。研究鸟类种群的生态学家似乎确信，食物是许多种群的有限资源，他们把注意力集中在与觅食有关的形态和行为适应的差异上。同域物种通常占据不同的栖息地，如果没有，则在总体大小、喙的形状或大小或觅食习惯上存在差异（Lack, 1944, 1954）。最近的许多研究似乎支持最初的概括。本研究的对象是孔雀鸟（Ammospiza leconteii）和尖尾麻雀（Ammospiza caudacuta）。后者不仅与北美内陆的Le Conte麻雀同属，而且与大西洋沿岸的海边麻雀（Ammospiza maritima）同属。将Seaside和尖尾麻雀（Woolfenden, 1956）之间的关系与Le Conte和尖尾麻雀之间的关系进行比较，可能会显示其同域亲属如何影响了广泛分布的尖尾麻雀的选择。
MANY ecologists believe that interspecific competition will result in the elimination of one of the competing species or in the evolution of differences that will let the two species coexist without competing (Lack, 1954, 1966; Mayr, 1963). This has stimulated considerable study of the ecology of sympatric species. Ecologists studying avian populations seem convinced that food is the limiting resource of many populations, and they have focused attention on differences in morphological and behavioral adaptations associated with foraging. Sympatric species usually occupy different habitats or, if not, differ in overall size, in shape or size of bill, or in foraging habits (Lack, 1944, 1954). Many recent studies seem to support the original generalizations. The subjects of the present study are the Le Conte's Sparrow (Ammospiza leconteii) and the Sharp-tailed Sparrow (Ammospiza caudacuta). The latter is not only sympatric with the Le Conte's Sparrow in interior North America but also with the Seaside Sparrow (Ammospiza maritima) along the Atlantic coast. A comparison of the relationships between the Seaside and Sharp-tailed Sparrows (Woolfenden, 1956) with those between the Le Conte's and Sharp-tailed Sparrows might show how its sympatric relatives have influenced selection in the wide-ranging Sharptailed Sparrow.