| 幼虫食物对甜菜夜蛾生长发育、繁殖及飞行的影响 |
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| 引用本文： | 江幸福 罗礼智. 幼虫食物对甜菜夜蛾生长发育、繁殖及飞行的影响[J]. 昆虫学报, 1999, 42(3): 270-276 |
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| 作者姓名： | 江幸福 罗礼智 |
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| 摘 要： | 报道了人工饲料、圆白菜和玉米苗三种食物对甜菜夜蛾Spodoptera exigua发育历期、蛹重以及成虫产卵和飞行能力的影响。幼虫取食人工饲料时发育历期最短，蛹最重(138 mg)，产卵量最高(643粒)；在12 h的吊飞测试中，成虫飞行距离最远(25.5 km)，飞行时间最长(6.2 h)，飞行超过10 km的个体占67.9%，超过5 h的占60.7%。幼虫取食玉米苗时发育历期最长，蛹最轻(52 mg)，产卵量最低(416粒)，成虫仅能飞行3.3 km，1.7 h，飞行超过10 km或5 h的个体均仅占4.2%，各项指标均显著低于人工饲料组。幼虫取食圆白菜时各项指标与人工饲料组基本相似(幼虫历期和蛹重除外)，而显著优于玉米苗组(幼虫历期除外)。这些结果表明，幼虫食物对甜菜夜蛾的生长发育、产卵及飞行能力均有显著的影响，因而是影响其个体发育、种群增长及种群动态的重要因素之一。同时，由于取食本人工饲料的各项指标均优于其它两种食料植物，因而可作为饲养甜菜夜蛾的实用饲料。
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| 关 键 词： | 甜菜夜蛾 幼虫食物 生长发育 产卵量 飞行能力 |
INFLUENCE OF LARVAL DIETS ON DEVELOPMENT, FECUNDITY AND FLIGHT CAPACITY OF THE BEET ARMYWORM, SPODOPTERA EXIGUA |
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| Jiang Xin-fu,Luo Li-zhi,Hu Yi. INFLUENCE OF LARVAL DIETS ON DEVELOPMENT, FECUNDITY AND FLIGHT CAPACITY OF THE BEET ARMYWORM, SPODOPTERA EXIGUA[J]. Acta Entomologica Sinica, 1999, 42(3): 270-276 |
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| Authors: | Jiang Xin-fu Luo Li-zhi Hu Yi |
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| Abstract: | Effects of larval diets on developmental period, pupal weight, fecundity and flight capacity of the beet armyworm Spodoptera exigua (Hübner) were investigated. Larvae fed with the artificial diet showed a significant shorter larval duration and produced heavier pupae than those fed with maize seedling. Fecundity of the female adults from larvae reared on the artificial diet was significantly greater than that from maize seedling. Based on a 12 hours tethered-flight test of the newly emerged and unfed adults, moths from the larvae reared on the artificial diet and maize seedling could fly 25.5 and 3.3 km and 6.2 and 1.7 h, respectively, and these differences were also significant. The adults flying beyond 10 km and 5 h during the test period accounted for 67.9% and 60.7% of the total in the colony on the artificial diet while both the values only 4.2% in the colony on maize seedling. Most of these parameters from cabbage-fed larvae were similar to or a little poorer than those from the artificial diet-fed ones, but significantly better than those from maize seedling-fed group. These results suggest that growth, development and population dynamics of the beet armyworm must be significantly affected by larval diets. Furthermore, the artificial diet described in this paper might be used as a substitute for the natural foods of the beet armyworm. |
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| Keywords: | Spodoptera exigua (Hübner) larval food growth and development fecundity flight capacity |
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