Feeding behaviour and food preferences of the pest species comprising the Epilachna vigintioctopunctata (F.) complex (Col., Coccinellidae)
Feeding behaviour and food preferences of the pest species comprising the Epilachna vigintioctopunctata (F.) complex (Col., Coccinellidae)
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Epilachna vigintioctopunctata (F.) 复合体（Col.，瓢虫科）害虫的摄食行为和食物偏好
DOI：
10.1111/j.1439-0418.1990.tb00150.x
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
L. W. Filewood
中科院分区：
文献类型：
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作者：
A. Richards;L. W. Filewood
通过对5个科34种植物的食物接受性试验，证实了葫芦瓢虫理查兹专食葫芦科植物，葫芦瓢虫和瓢虫均以葫芦科植物为食。26斑叶蝉26斑叶蝉（Boids.）和E. 28斑（Boisd.）专门吃茄科植物叶子和果实是两种食茄物种的首选。E.葫芦科，甲虫作为授粉媒介。这是第一次记录这种行为的植食性瓢虫。食物偏好受气味、味道、视觉和植物年龄的影响。它还受叶的厚度和粗纤维的比例、薄壁组织和含水量的影响。在同一种或不同植物上的取食位置在明暗条件下有所不同，但E.葫芦科E. 26具点叶的正面。用大肠南瓜E.晚上26点喂食是首选。在食物偏好试验中，E.‐cucurbitae吃得更快，可以比E. 26 punctata在有限的时间内，有一个例外-马铃薯（Solanum tuberosum）是提供给三个epilachnine物种的所有食用植物物种中最优选的。E.通过对葫芦科植物的化学防御作用，分离出叶片的特定取食区。这是在亚洲和澳大利亚的epilachnines这种行为的第一个记录。
Food acceptance trials involving 34 species belonging to five plant families confirm Epilachna cucurbitae Richards feeds exclusively on Cucurbitaceae and both E. 26‐punctata 26‐punctata (Boids.) and E. 28‐punctata pardalis (Boisd.) feed exclusively on Solanaceae. Leaves and fruit are preferred by the two solanivorous species. Flowers, especially pollen, are preferred by E. cucurbitae, with beetles acting as pollinating agents. This is the first record of such behaviour in a phytophagous coccinellid. Food preference is influenced by odour, taste, vision and age of plant. It is also influenced by thickness of leaves and the proportion of crude fibres, parenchymatous tissue and water content present. Feeding positions on the same or different plant species vary in darkness and daylight, but E. cucurbitae prefers the abaxial and E. 26‐punctata the adaxial side of leaves. With E. cucurbitae, there is no specific feeding period, but with E. 26‐punctata night feeding is preferred. In food preference trials, E.‐cucurbitae eat faster and can consume more food than E. 26‐punctata in a limited period of time, with one exception — potato (Solanum tuberosum) is the most preferred of all food plant species offered to the three epilachnine species. Complex trench‐cutting behaviour by E. cucurbitae, to isolate specific feeding areas of leaf from chemical defences produced by cucurbitaceous host plants, is recorded for the first time. This is the first record of such behaviour in Asian and Australasian epilachnines.