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首页> 外文期刊>Annals of Forest Science >Fecundity and larval development of Monochamus galloprovincialis (Coleoptera Cerambycidae) in experimental breeding.
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Fecundity and larval development of Monochamus galloprovincialis (Coleoptera Cerambycidae) in experimental breeding.

机译：在试验育种中， Monochamus galloprovincialis （Coleoptera Cerambycidae）的繁殖力和幼体发育。

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摘要

This study aimed at clarifying basic life traits (fecundity, mortality and development) of Monochamus galloprovincialis, the vector of Bursaphelenchus xylophilus, the causative agent of the Pine Wilt Disease, in Portugal. Mating and oviposition experiments were conducted on Pinus sylvestris logs under laboratory conditions during two years. Larval development was followed outdoors. Fecundity was high, with 138.2 eggs per female. For the first time, the number of larval instars (4) in M. galloprovincialis was recognized and instars were described. Information are provided on the shape and size of the larval galleries. Boring of galleries in sapwood and heartwood started at the third instar. All instars could overwinter but adults emerged simultaneously resulting in a univoltine life cycle for the majority of the individuals. An obligatory diapause in the forth instar was assumed. However, 8.1% of the insects had a two-year development. Important differences in mortality were noted between the two experimental years, which could be explained by differences on the size of the breeding logs. There is a high biological proximity between M. galloprovincialis populations in France and those in Portugal and Northern Europe. However, a higher fecundity and longevity was observed in France, as well as a higher percentage of insects with a two-year development, compared with Portuguese populations.
机译：这项研究旨在阐明葡萄牙松枯病病原体 Bursaphelenchus xylophilus 的载体 Monochamus galloprovincialis 的基本生活特征（生殖力，死亡率和发育） 。在两年的实验室条件下，对樟子松原木进行了交配和产卵实验。在户外跟随幼虫的发展。繁殖力高，每只雌性有138.2个卵。这是第一次，幼虫龄（4）以米为单位。认识到了galloprovincialis ，并描述了幼虫。提供有关幼虫画廊的形状和大小的信息。在第三龄期开始无聊边材和心材画廊。所有的幼虫都可能越冬，但成年成年人同时出现，导致大多数个体的单伏生命周期。假定第四龄期有强制性滞育。但是，有8.1％的昆虫发育了两年。在两个实验年之间注意到了重要的死亡率差异，这可以通过繁殖原木大小的差异来解释。 M之间具有高度的生物学邻近性。法国以及葡萄牙和北欧的galloprovincialis人口。但是，与葡萄牙人口相比，法国的繁殖力和寿命更高，而且两年发展的昆虫百分比更高。

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