全球传粉者正在减少,有可能减少人类食物供应和植物多样性。为了支持传粉者种群,鼓励种植不同开花季节的富含花蜜的植物,同时促进风授粉植物,包括草,很少推荐。然而,许多蜜蜂和其他传粉者从用作蛋白质来源的草中收集花粉。除了花粉,膜翅目也可能从感染蚜虫的植物中收集蜜露。在这项研究中,食用或收集甜高粱花粉的昆虫,双色高粱,在谷物高粱田和约翰逊草地区放置平底锅陷阱和黄色粘卡调查时进行了记录,高粱halepense评估膜翅目对高粱蚜虫(SA)排泄的蜜露的反应,Melanaphissorghi.昆虫的五个属,包括蜜蜂,气蝇,和耳朵,观察到甜高粱以花粉为食,根据日期观察到的差异,但不是株高或穗长。从谷物高粱中收集了近2000个属于29个家庭的膜翅目,其中84%与蚜虫感染有关。在SA感染的高粱中收集到的膜翅目数量约为4倍,蚂蚁数量明显增多,halictid蜜蜂,scelionid,Sphecid,encyrtid,mymarid,在出没的高粱地块中发现了黄蜂和黄蜂。在约翰森草地块,从受感染的地块收集到的膜翅目增加了20倍。一起,数据表明,高粱是气蝇的花粉食物来源,Earwigs,易受SA影响的蜜蜂和高粱可以从蜜露中提供能量。未来的研究应该检查在作物田边缘种植易感高粱条是否会有益于膜翅目和传粉者。
Pollinators are declining globally, potentially reducing both human food supply and plant diversity. To support pollinator populations, planting of nectar-rich plants with different flowering seasons is encouraged while promoting wind-pollinated plants, including grasses, is rarely recommended. However, many bees and other pollinators collect pollen from grasses which is used as a protein source. In addition to pollen, Hymenoptera may also collect honeydew from plants infested with aphids. In this study, insects consuming or collecting pollen from sweet sorghum, Sorghum bicolor, were recorded while pan traps and yellow sticky card surveys were placed in grain sorghum fields and in areas with Johnsongrass, Sorghum halepense to assess the Hymenoptera response to honeydew excreted by the sorghum aphid (SA), Melanaphis sorghi. Five genera of insects, including bees, hoverflies, and earwigs, were observed feeding on pollen in sweet sorghum, with differences observed by date, but not plant height or panicle length. Nearly 2000 Hymenoptera belonging to 29 families were collected from grain sorghum with 84% associated with aphid infestations. About 4 times as many Hymenoptera were collected in SA infested sorghum with significantly more ants, halictid bees, scelionid, sphecid, encyrtid, mymarid, diapriid and braconid wasps were found in infested sorghum plots. In Johnsongrass plots, 20 times more Hymenoptera were collected from infested plots. Together, the data suggest that sorghum is serving as a pollen food source for hoverflies, earwigs, and bees and sorghum susceptible to SA could provide energy from honeydew. Future research should examine whether planting strips of susceptible sorghum at crop field edges would benefit Hymenoptera and pollinators.