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首页> 外文学位 >Hyssopus pallidus (Askew): Biology, clutch size and potential in the biological control of the codling moth.
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Hyssopus pallidus (Askew): Biology, clutch size and potential in the biological control of the codling moth.

机译：Hyssopus pallidus（Askew）：，蛾的生物学，离合器大小和生物防治潜能。

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摘要

Hyssopus pallidus (Hymenoptera: Eulophidae) was recently discovered attacking the codling moth in France and has been considered as a potential candidate for introduction into California for the biological control of this fruit-boring pest of apples, pears and walnuts. Studies of its general biology revealed that it is a gregarious synovogenic idiobiont ectoparasitoid that can attack a wide range of larval stages of the host. It has a fecundity of 170 large eggs, a longevity of 55 days at 22-24{dollar}{bsol}sp{bsol}circ{dollar}C with access to honey, and an elaborate host handling behavior.; Manipulative experiments showed that H. pallidus has the ability to adjust its clutch size in relation to host quality, represented by host size and host age; to host condition, represented by previous parasitism by conspecifics and Ascogaster quadridentata (Hymenoptera: Braconidae); and to host relative abundance, represented by frequency of host encounters. A more detailed study of the competitive interaction of H. pallidus and A. quadridentata revealed that larvae parasitized by A. quadridentata are better quality hosts for H. pallidus, probably due to an improved nutritional status of the host, and can support almost twice as many female progeny as healthy host larvae of comparable size.; Adding some complexity to simple difference equation models increases their level of realism and their utility as predictive tools in biological control projects. We show that the addition of age structure to the host population is essential to estimate the impact of different parasitoid guilds and to consider how best to minimize damage caused by the most destructive developmental stages of the host.; Using a novel age-structured host-multiparasitoid model, along with parameter estimates from the literature and current experimental results, we show that the introduction of H. pallidus into California would be beneficial to the present system that contains only the codling moth and A. quadridentata. A sensitivity analysis of the model, to include variation in each of the parameter values in turn, suggests that the predicted reduction in late instar larvae is robust.
机译：Hyssopus pallidus（Hymenoptera：Eulophidae）最近在法国被发现袭击了苹果mo蛾，并被认为是引入加州的潜在候选者，以对这种苹果，梨和核桃的无果害虫进行生物防治。对它的一般生物学研究表明，它是一种群居滑膜成虫的成虫性类异体寄生虫，可侵袭宿主的许多幼体阶段。它的繁殖力为170个大卵，在22-24美元的温度下可存活55天，可以接触蜂蜜，并且具有精心制作的宿主处理行为。操纵性实验表明，苍白螺旋体有能力根据寄主质量调节其离合大小，以寄主大小和寄主年龄为代表；寄主病状，以先前的寄生虫为特征，以同种异体和Ascogaster quadridentata（膜翅目：Braconidae）为代表；并以主持人相遇的频率表示主持人的相对丰度。对苍白螺旋体和四倍体拟南芥竞争性相互作用的更详细研究表明，被四倍螺旋菌寄生的幼虫是苍白螺旋体的优质寄主，这可能是由于寄主的营养状况得到改善，并且可以支撑两倍许多雌性后代为可比大小的健康宿主幼虫。简单差分方程模型增加了一些复杂性，从而提高了它们的真实性水平，并提高了其在生物控制项目中作为预测工具的效用。我们表明，向寄主群体中增加年龄结构对于评估不同的寄生虫行会的影响以及考虑如何最大程度地减少由寄主最具破坏力的发展阶段所造成的损害至关重要。使用新颖的年龄结构的宿主-多寄生动物模型，以及来自文献和当前实验结果的参数估计，我们表明将苍白螺旋体引入加利福尼亚将有益于仅包含co蛾和A的本系统。四边形。对模型的敏感性分析（依次包括每个参数值的变化）表明，预计晚star幼虫的减少是可靠的。

著录项

  • 作者

    Zaviezo, Tania.;

  • 作者单位

    University of California, Berkeley.;

  • 授予单位 University of California, Berkeley.;
  • 学科 Biology Entomology.; Biology Ecology.; Environmental Sciences.; Agriculture Agronomy.
  • 学位 Ph.D.
  • 年度 1997
  • 页码 p.3438
  • 总页数 221
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 昆虫学;
  • 关键词

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