暗黑鳃金龟成虫产卵量及成活率主要影响因素研究
暗黑鳃金龟成虫产卵量及成活率主要影响因素研究(毕业论文7600字)
摘 要：以暗黑鳃金龟为研究对象，开展了暗黑鳃金龟成虫产卵量及成活率的影响的研究。结果表明，不同种群雌雄比例、种群密度、土壤类型、饲养时间暗黑鳃金龟的产卵量及成活率有很大差别。雌雄比例过高或过低产卵量均不高，雌雄比例大于或等于1:1时有利于成虫产卵提高，当比例为1:4时最有利于成虫产卵提高，此时单个雌虫产卵量为131.05。但从整体上来看1:3最适合实验室暗黑鳃金龟产卵。而按2:1、3:1养殖的暗黑鳃金龟产卵量很少，雄虫太少不利于其产卵提高。在实验室条件下每箱养殖200头比400头合适。在土壤类型比较中，由于壤土稍微比沙土适合暗黑鳃金龟卵的生殖，但由于成虫抵抗力较强两者成活率相差不大。
关键词：暗黑鳃金龟；产卵量；成活率
The Main Factors on Adult Holotrichia Parallela Motschulsky`s Fecundity and Survival
Abstract: Diablo Melolonthidae to as the research object, carried out Diablo Melolonthidae adult fecundity and survival rate of. The results showed that the proportion of male and female population, population density, soil type, feeding time, the amount of dark Melolonthidae spawning and survival rate are very different. Male and female ratio is too high or too low, not high fecundity, male and female ratio greater than or equal to 1:1 in favor oviposition increases, while the ratio of 1:4 increased the most favorable oviposition, when a single female fecundity is 131.05. But the overall point of view 1:3 Lab Diablo Melolonthidae most +suitable spawning. The culture of the Dark by 2:1,3:1 fecundity Melolonthidae little too detrimental to their spawning male increased. Breeding under laboratory conditions 200 per case than the 400 fit. In the comparison of soil types, due to slightly more than the sandy loam dark Melolonthidae eggs for reproduction, but more resistant to both adult survival rate of less the same. [资料来源：https://www.doc163.com]
Key words: Holotrichia parallela Motschulsky；Fecundity；Survival rate；The proportion of male and female；Soil type；Population density
目 录
摘 要 1
关键词 1
1 前言 2
1 材料和方法 3
1．1供试虫源与饲料 3
1．2试验方法 3
1．2．1 雌雄比例对华北大黑鳃金龟生殖和成活率的影响 3
1．2．2种群密度对暗黑鳃金龟产卵和成活率的影响 4
1．2．3 土壤类型对暗黑鳃金龟产卵和成活率的影响 4
1．3数据处理方法 4
2结果与分析 4
2．1雌雄比例不同对暗黑鳃金龟产卵量的影响 4
2．2种群密度对暗黑鳃金龟产卵量的影响 5
[来源：http://Doc163.com]
2．3不同土壤类型对暗黑鳃金龟产卵量的影响 6
2．4雌雄比例不同对暗黑鳃金龟成活率的影响 7
2．5 种群密度不同对暗黑鳃金龟成活率的影响 8
2．6 土壤类型对暗黑鳃金龟成活率的影响 9
3 结论与讨论 10
参考文献 11
致 谢 13