Body colour and genetic variation in winged morph production in the pea aphid
Body colour and genetic variation in winged morph production in the pea aphid
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DOI：
10.1023/a:1018993000281
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发表时间：
2001-05-01
影响因子：
1.9
通讯作者：
Braendle, C
中科院分区：
文献类型：
--
作者：
Weisser, WW;Braendle, C
蚜虫（同翅目：蚜总科）在其生命周期中产生许多不同的表型，其中包括有翅（有翼）和无翅（无翅）变体。 Lowe & Taylor (1964) 和 Sutherland (1969a, b) 首次提出，蚜虫克隆在产生有翅形态的倾向上存在差异，而在豌豆蚜 (Acyrthosiphon pisum Harris) 中，这种倾向与表型的颜色有关。我们通过在诱导翅膀（拥挤）和对照条件下饲养豌豆蚜的红色和绿色克隆个体，测试了翅膀形态生产中遗传变异的发生，并对它们的后代的表型进行了评分。克隆在有翼生产方面存在显着差异，红色克隆平均产生比绿色克隆更高比例的有翅形态。然而，重要的是，相同颜色的克隆之间存在相当大的差异。有翅变形生产的广义遗传力分别为 0.69（拥挤处理）和 0.63（对照）。克隆体产生的后代数量也有所不同。当暴露于拥挤刺激时，蚜虫推迟了后代的产生，导致拥挤处理中产生的后代数量高于对照。
Aphids (Homoptera: Aphidoidea) produce a number of different phenotypes in their life-cycle, among which are winged (alate) and wingless (apterous) morphs. Lowe & Taylor (1964) and Sutherland (1969a, b) were the first to suggest that aphid clones differ in their propensity to produce the winged morph and that in the pea aphid (Acyrthosiphon pisum Harris), this propensity is linked to the colour of the phenotype. We tested for the occurrence of genetic variation in winged morph production by rearing individuals from red and green clones of pea aphid under wing-inducing (crowding) and control conditions, and scored the phenotypes of their offspring. Clones differed significantly in alate production and red clones produced on average a higher proportion of winged morphs than green clones. Importantly, however, there was considerable variation between clones of the same colour. Broad-sense heritabilities of winged morph production were 0.69 (crowding treatment) and 0.63 (control). Clones also differed in the number of offspring they produced. When exposed to the crowding stimulus, aphids deferred offspring production, resulting in a higher number of offspring produced in the crowding treatment than in the control.