Leather Simon R
Forestry Commission, Northern Research Station, EH25 9SY, Roslin, Midlothian, UK.
Oecologia. 1986 Sep;68(3):367-369. doi: 10.1007/BF01036740.
Gynoparae (autumn migrants) of the bird cherry-oat aphid,Rhopalosiphum padi (L.), were not found to land randomly on their primary host,Prunus padus L. Some trees, although within a few metres of heavily infested trees, were not colonized at all. This phenomenon occurs regularly from year to year.The reasons for this non-random landing pattern are examined in terms of the success of subsequent generations, special attention being paid to the reproductive rate of the oviparae and fundatrices and the success of the developing populations in the spring of the following year.Trees in Scotland and Finland were examined in this manner and the hypothesis developed that the gynoparae ofR. padi show maternal care in selecting hosts that favour their offspring's survival and reproduction.Aphids were reared under controlled conditions in the laboratory on twigs cut from trees of known previous infestation levels. Aphids on twigs from preferred trees had better survival rates and produced more offspring than those aphids on twigs from non-preferred trees.
未发现禾谷缢管蚜（Rhopalosiphum padi (L.)）的雌性蚜（秋季迁飞蚜）会随机降落在其第一寄主稠李（Prunus padus L.）上。有些树木，尽管距离严重受灾的树木只有几米远，却根本没有被蚜虫寄生。这种现象每年都会定期出现。从后代的生存情况来研究这种非随机降落模式的原因，特别关注产卵雌蚜和干母的繁殖率以及次年春季发育中的蚜虫群体的生存情况。以这种方式对苏格兰和芬兰的树木进行了研究，并提出了一个假说，即禾谷缢管蚜的雌性蚜在选择有利于其后代生存和繁殖的寄主时表现出母性关怀。在实验室可控条件下，用从先前已知受侵染程度的树上剪下的嫩枝饲养蚜虫。来自偏好树木嫩枝上的蚜虫比来自非偏好树木嫩枝上的蚜虫有更高的存活率，并且产生更多的后代。
