Why tropical squirrels carry seeds out of source crowns
Why tropical squirrels carry seeds out of source crowns
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为什么热带松鼠将种子带出源冠
DOI：
10.1017/s0266467400000237
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发表时间：
1985
影响因子：
1.4
通讯作者：
J. Payne
中科院分区：
文献类型：
--
作者：
P. Becker;M. Leighton;J. Payne
从种子传播及其对植物繁殖的影响的角度来看，松鼠是否从源冠中取出种子的选择压力是有意义的。这些力量的性质将影响植物的进化能力，改变松鼠的行为，以提高其繁殖成功率。与落在母树树冠下的种子相比，远离母树散布的种子被捕食者发现的风险可能会降低（Becker & Wong 1985; Janzen 1970;关于这一主题的最新评论，请参见Clark & Clark 1984和Howe & Smallwood 1982）。在这里，我们讨论了松鼠物种之间的差异，从源树中去除种子，并希望诱导其他人添加到我们不完整的，轶事的观察这种行为的可能解释。我们在马来西亚半岛进行了为期18个月的研究（Payne 1979），在印度尼西亚婆罗洲东加里曼丹进行了为期24个月的脊椎动物果实和果实开发研究（Leighton & Leighton 1983），并在马来西亚半岛对Aglaia sp.（楝科）果实树冠的游客进行了为期两周的观察（Becker &
The selective pressures affecting whether squirrels remove seeds from source crowns are of interest from the standpoint of seed dispersal and its consequences for plant reproduction. The nature of these forces will affect a plant's evolutionary capacity for modifying squirrel behaviour to enhance its reproductive success. Seeds that are dispersed away from the parent tree may have a reduced risk of discovery by predators compared with those dropped beneath the parent crown (Becker & Wong 1985; Janzen 1970; see Clark & Clark 1984 and Howe & Smallwood 1982 for recent reviews of this topic). Here we discuss differences among squirrel species in seed removal from source trees and possible explanations for this behaviour in the hope of inducing others to add to our incomplete, anecdotal observations. We have observed the feeding behaviour of diurnal, arboreal squirrels during an 18-month study in Peninsular Malaysia (Payne 1979), a 24-month study of fruiting and fruit exploitation by vertebrates in East Kalimantan, Indonesian Borneo (Leighton & Leighton 1983), and two weeks of observation on visitors to a fruiting crown of Aglaia sp. (Meliaceae) in Peninsular Malaysia (Becker &