A long-day short-day effect in the photoperiodic control of the pupal diapause of the bollworm, Heliothis zea (Boddie)
A long-day short-day effect in the photoperiodic control of the pupal diapause of the bollworm, Heliothis zea (Boddie)
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长日照和短日照效应对棉铃虫蛹滞育的光周期控制，Heliothis zea (Boddie)
DOI：
10.1016/0022-1910(66)90160-0
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发表时间：
1966
影响因子：
2.2
通讯作者：
P. Adkisson
中科院分区：
文献类型：
--
作者：
S. G. Wellso;P. Adkisson
棉铃虫滞育的诱导被认为是依赖于温度和光周期。在相同的光周期条件下，21° C比27°C饲养的棉铃虫滞育更多。诱导蛹滞育的光周期要求，在自然条件下的人口的相当大的比例，需要以前的父母和鸡蛋阶段暴露于较长的光比随后的幼虫后代。结果表明，秋季滞育诱导曲线呈钟形是由于亲卵有一套光周期要求，幼虫期有另一套光周期要求。滞育可能只会导致当所有三个生活史阶段的临界光周期要求重叠。因此，滞育仅限于一个相对狭窄的范围内的光周期和学院站，得克萨斯州，只发生在9月下旬至11月中旬。这为棉铃虫提供了一种区分春季和秋季日长的机制。实验还表明，可能有一个母亲的影响，使个体在产卵前开始进入滞育状态;然而，这种处理可以通过改变从卵到蛹的发育期间的光周期暴露顺序来逆转。
Diapause induction in the bollworm was found to be dependent upon both temperature and photoperiod. More bollworms diapaused when reared at 21° than 27°C under identical photoperiodic regimens. The photoperiodic requirement for inducing the pupal diapause, in a substantial percentage of a population under natural conditions, requires that the previous parent and egg stages be exposed to longer photofractions than the subsequent larval progeny. Results suggest that the bell-shape of the diapause induction curve in the autumn is due to the parents and eggs having one set of photoperiodic requirements and the larval stages having another. Diapause may be induced only when the critical photoperiodic requirements of all three life-history stages overlap. Thus, diapause is restricted to a relatively narrow range of photoperiods and at College Station, Texas, occurs only from late September to mid-November. This provides the bollworm with a mechanism for distinguishing between spring and autumn day-lengths.The experiments also indicate that there may be a maternal influence which initiates the individual toward the diapause condition prior to the deposition of eggs; however, this treatment may be reversed by altering the sequence of photoperiodic exposure during the developmental period from egg to pupae.