Seasonal adult occurrence of a coccidophagous ladybird,Telsimia nigra(Coleoptera: Coccinellidae), in citrus groves in central Japan
Seasonal adult occurrence of a coccidophagous ladybird,Telsimia nigra(Coleoptera: Coccinellidae), in citrus groves in central Japan
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DOI：
10.1007/s13355-020-00700-y
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发表时间：
2020-10-13
影响因子：
1.3
通讯作者：
Kaneko, Shuji
中科院分区：
文献类型：
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作者：
Kaneko, Shuji
食球虫瓢虫，Telsimia nigra（Weise）（鞘翅目：瓢虫科）可能在抑制日本柑橘园中属于双翅目（半翅目：球虫总科）的介壳虫丰度方面发挥着重要作用，因此可能需要受到保护，免受农药的使用。 T丰度的季节变化。在日本中部静冈市，使用设置在柑橘树冠内的黄色粘虫捕捉器，并通过敲打不同农药施用量的柑橘园中的柑橘树叶来监测黑青蝇成虫。在无农药、有机和减少农药的树林中，用粘虫诱捕器捕获黑青蝇成虫，无农药林中的成虫要多得多，但在传统管理的林中很少有记录。 T 的数量较多。 3月下旬至5月初，诱捕器捕获黑成虫，在无农药的树林中，4月上旬至中旬数量达到高峰，此后直到11月，不断发现数量少得多的成虫。一些成虫主要在四月至五月和十月被困在有机和减少农药的树林中，前几个月有更多成虫。在无农药的树林中，四月和十一月通过敲打柑橘叶收集的成虫往往更为丰富。因此，T.在静冈市的柑橘园中，黑成虫在 4 月至 5 月出现最多，10 月至 11 月出现较少。这一结果表明，4-5月和秋季应避免使用对瓢虫有害的农药，以保护瓢虫。日本中部柑橘园中的黑葡萄种群。
A coccidophagous ladybird,Telsimia nigra(Weise) (Coleoptera: Coccinellidae), may play a significant role in suppressing the abundance of scale insects belonging to Diaspididae (Hemiptera: Coccoidea) in citrus groves in Japan, and therefore might need to be protected from pesticide applications. Seasonal changes in the abundance ofT. nigraadults were monitored using yellow sticky traps set inside citrus tree canopies and by beating citrus foliage in citrus groves with different pesticide application levels in Shizuoka City, central Japan.Telsimia nigraadults were caught on sticky traps in pesticide-free, organic, and reduced-pesticide groves, with far more adults in a pesticide-free grove, but were rarely recorded in conventionally managed groves. A larger number ofT. nigraadults were captured on the traps from late March to early May, with a peak numbers in early to mid-April in the pesticide-free grove, and afterward adults were continually detected in much smaller numbers until November. Some adults were trapped mainly in April-May and October in organic and reduced-pesticide groves, with more adults in the former months. Adults collected by beating citrus foliage tended to be more abundant in April and November in the pesticide-free grove. Thus,T. nigraadults occurred most abundantly in April-May and in smaller numbers in October-November in citrus groves in Shizuoka City. This result suggests that the application of pesticides that are harmful to ladybirds should be avoided in April-May and autumn to conserveT. nigrapopulations in citrus groves in central Japan.