半人工饲料的初步试验,为蓟生物防治甲虫,Cassida rubiginosa

Q3 Agricultural and Biological Sciences
M. Cripps, J. Mills, L. Villamizar, C. van Koten
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引用次数: 0

摘要

蓟生物防治甲虫Cassida rubiginosa生长在新西兰,但通常数量不足以控制杂草Cirsium arvense(加利福尼亚蓟)。甲虫的大量生产可以通过补充和淹没释放来加强生物防治工作。我们对设计用于甲虫实验室大规模生产的半人工饲料(含有寄主植物材料)进行了初步试验。在含有三种不同浓度防腐剂(全、半和无防腐剂)的饲料中测试了幼虫的存活率,并与阳性对照(卷叶草叶片)和阴性对照(水)进行了比较。只有叶盘上的幼虫发育到成虫期。全防腐剂饲料的存活时间最长,平均死亡时间为8.8±0.6 d,最长存活时间为21 d。虽然没有幼虫在日粮上完全发育,但取得了一些重要进展:(1)幼虫在日粮上可以移动;(2)以日粮为食的幼虫;(3)微生物污染得到了充分的控制,但对幼虫没有急性毒性。今后的饲料开发应重点关注幼虫发育所需的营养成分。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Initial test of a semiartificial diet for the thistle biocontrol beetle, Cassida rubiginosa
The thistle biocontrol beetle, Cassida rubiginosa is established in New Zealand, but often not sufficiently abundant to achieve control of the weed, Cirsium arvense (Californian thistle). Mass production of the beetle could enhance biocontrol efforts through supplemental and inundative releases. We carried out an initial test of a semiartificial diet (containing host plant material) designed for laboratory mass production of the beetle. Larval survival rates were tested on diets with three different concentrations of preservatives (full, half, and no preservative), and compared to a positive control (leaf disc of Cirsium arvense), and a negative control (water). Only larvae on the leaf disc developed to the adult stage. Of the diets, the longest survival time was on the full preservative diet, with a mean mortality time of 8.8 ± 0.6 days, and a maximum survival time of 21 days. Although no larvae completed development on the diets, some important progress was achieved: (1) Neonate larvae were mobile on the diet; (2) larvae fed on the diet; and (3) there was adequate control of microbial contamination without being acutely toxic to the larvae. Further development of a diet for Cassida rubiginosa should focus on nutritional components for larval development.
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来源期刊
New Zealand Plant Protection
New Zealand Plant Protection Agricultural and Biological Sciences-Insect Science
CiteScore
1.10
自引率
0.00%
发文量
8
期刊介绍: New Zealand Plant Protection is the journal of the New Zealand Plant Protection Society. It publishes original research papers on all aspects of biology, ecology and control of weeds, vertebrate and invertebrate pests, and pathogens and beneficial micro-organisms in agriculture, horticulture, forestry and natural ecosystems of relevance to New Zealand.
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