SIZE-DEPENDENT TIMING OF METAMORPHOSIS IN MILKWEED BUGS (ONCOPELTUS) AND ITS LIFE-HISTORY IMPLICATIONS
SIZE-DEPENDENT TIMING OF METAMORPHOSIS IN MILKWEED BUGS (ONCOPELTUS) AND ITS LIFE-HISTORY IMPLICATIONS
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DOI：
10.2307/1540786
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发表时间：
1978-01-01
影响因子：
1.6
通讯作者：
GOODNER, SR
中科院分区：
文献类型：
--
作者：
BLAKLEY, N;GOODNER, SR
本文研究了松江长吻鳗Oncopeltus fasciatus和松江长吻鳗O.（半翅目：长蝽科）。若虫生长的实验操作表明，变态不会发生，直到达到一个临界尺寸。当植物不能进入寄主植物（马利筋属）时，种子和饲料的植物组织，生长速度大大减慢。在这些条件下，发育的大小依赖性调节提供了一种延迟变态的手段，直到达到最小尺寸。对于较大的物种O.而女性比男性更有魅力。这可能取决于若虫进入5龄（末龄）时的初始体型。
The relationship between larval body size (indexed by weight) and the timing of adult metamorphosis was studied in Oncopeltus fasciatus and O. cingulifer cingulifer (Hemiptera: Lygaeidae). Experimental manipulation of nymphal growth showed that metamorphosis does not occur until a critical size is attained. When nymphs do not have access to host plant (Asclepias spp.) seeds and feed on plant tissues, growth is slowed considerably. Under these conditions, size-dependent regulation of development provides a means of delaying metamorphosis until a minimal size is attained. This critical size is greater for the larger species, O. fasciatus, and is also greater for females than males. It probably depends on the initial body size of a nymph at the time it enters the 5th (final) instar.