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应用扫描电镜对黄曲条跳甲Phyllotreta striolata(Fabricius)成虫的触角结构、感器的类型、数量和分布进行了观察,并对雌、雄成虫触角及感器之间的差异进行了比较。结果表明:黄曲条跳甲成虫的触角为线形,共11节,即柄节、梗节和9个鞭小节。雄虫触角的长度略长于雌虫(雄:1.48±0.03 mm;雌:1.42±0.05 mm),其中,雄虫触角鞭节第3亚节长度明显长于雌虫(雄:0.19±0.02 mm;雌:0.15±0.01 mm,t=3.77,P=0.0054),且明显膨大,其余各节长度和形态在雌雄虫间差异不显著。触角感器共9种,分别为毛板形感器、刺形感器、毛形感器1型和2型、锥形感器1型、2型和3型、槽钉形感器和耳形感器。各种感器中除耳形感器仅分布在雄性触角末节外,其他类型感器的分布在雌、雄性个体间无明显差异。雄成虫触角上各种感器数量总和明显多于雌成虫,其中,毛形感器1型、锥形感器1型和耳形感器的数量雄成虫明显多于雌成虫。比较并讨论了黄曲条跳甲触角上不同类型感器的适生意义,研究结果将有助于理解黄曲条跳甲触角感器的功能和行为机制。
Scanning electron microscopy (SEM) was used to observe the antennal structure, the type, number and distribution of sensilla of Phyllotreta striolata (Fabricius) adults. The differences of antennal angle and sensilla between male and female adults were compared. The results showed that the antennae of Bemisia tabaci were linear, with 11 knots, ie, pedicel, pedicel and 9 whip knuckles. The length of antennae of male was slightly longer than that of female (male: 1.48 ± 0.03 mm; female: 1.42 ± 0.05 mm). The length of the third sub-section of male antennae was significantly longer than female (male: 0.19 ± 0.02 mm; female : 0.15 ± 0.01 mm, t = 3.77, P = 0.0054), and obviously enlarged. The length and shape of other sections were not significantly different between male and female. A total of 9 types of antenna sensors, respectively, wool board sensors, barbed sensors, hair sensors 1 and 2, sensors 1, 2 and 3, trough sensors and ear Sensor. In addition to the ear sensor in all kinds of sensory organs, it is only distributed in the distal part of the male antennae. The distribution of other types of sensory organs is not significantly different among the female and male individuals. Male adult antennae on the total number of sensory organs were significantly more than female adults, of which, hairy sensor type 1, cone sensor type 1 and the number of male ear sensors significantly more male adults than female adults. The fitness implications of different types of sensors on the antenna of hopularium were compared and discussed. The results will help to understand the functional and behavioral mechanisms of the antennae of the antenna.