THE INFLUENCE OF PREDATORS ON THE MOVEMENT OF APTEROUS PEA APHIDS BETWEEN PLANTS
THE INFLUENCE OF PREDATORS ON THE MOVEMENT OF APTEROUS PEA APHIDS BETWEEN PLANTS
复制标题
捕食者对无翅豌豆蚜植株间运动的影响
DOI：
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发表时间：
1979
期刊：
影响因子：
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通讯作者：
B. D. Frazer
中科院分区：
文献类型：
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作者：
B. Roitberg;J. Myers;B. D. Frazer
摘要 (1) 本文在实验室和野外研究了捕食者对无翅豌豆蚜传播的影响。 (2) 根据豌豆蚜从寄主植物上掉落后表现出的行为，可以将单个豌豆蚜分为两类之一：搜索者和奔跑者。 (3) 在田间网箱中，当有捕食者存在时，豌豆蚜很容易分散到新的寄主植物上。当没有活跃的捕食者时，无翅蚜虫的扩散很少见。 (4) 有证据表明，蚜虫扩散后的第二天，繁殖力就会降低。 (5)蚜虫传播距离与植株蚜叶上蚜虫密度呈正相关。 (6) 根据所提供的证据讨论了无翅蚜虫传播的意义。
SUMMARY (1) This paper examines the influence of predators on the dispersal of apterous pea aphids in the laboratory and field. (2) Individual pea aphids can be placed in one of two categories, searchers and runners, depending upon the behaviour they exhibit after dropping from their host plant. (3) In field cages, pea aphids readily disperse to new host plants in the presence of predators. Dispersal of apterous aphids is rare when active predators are absent. (4) Evidence is presented which suggests fecundity is reduced the day after an aphid disperses. (5) The distance dispersed by aphid nymphs is positively correlated with the density of aphids on the plant the aphid leaves. (6) The significance of dispersal by apterous aphids is discussed in the light of evidence presented.