| 普通大蓟马生长发育与内部结构观察及其对甲维盐胁迫的响应 |
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| 引用本文：黄天宝,赵林燕,俞起航,董文博,李芬,吴少英.普通大蓟马生长发育与内部结构观察及其对甲维盐胁迫的响应.植物保护学报,2026,53(1):226-234 |
| DOI：10.13802/j.cnki.zwbhxb.2026.2025155 |
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| 中文摘要:为明确普通大蓟马Megalurothrips usitatus的发育历期、形态解剖结构及其对甲维盐胁迫的响应，测定普通大蓟马的发育历期，于体视显微镜上观察雌、雄成虫的生殖系统结构，并研究亚致死浓度甲维盐处理后雌、雄成虫生殖结构的发育情况。结果显示：普通大蓟马发育分6个阶段，体型随其发育变大，且体色加深。其消化道由前、中、后肠及4根马氏管构成。雌成虫生殖系统含8根卵巢管的卵巢、受精囊和镰刀状产卵器；雄成虫具有成对精巢、附腺和刺状阳茎。经亚致死浓度LC25甲维盐处理后，普通大蓟马化伪蛹率由84.87%降至66.24%，并且雌成虫的卵巢管与雄成虫的精巢发育畸形。表明亚致死浓度甲维盐能显著抑制普通大蓟马的化伪蛹及变态发育，并对其生殖系统结构造成破坏。 |
| 中文关键词:普通大蓟马 甲维盐 发育历期 消化道 生殖系统 |
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| Growth, development, internal structure and responses of Asian bean thrips Megalurothrips usitatus to emamectin benzoate stress |
| Author Name | Affiliation | E-mail | | Huang Tianbao | Sanya Institute of Breeding and Multiplication, Hainan University, Sanya 572025, Hainan Province, China
School of Tropical Agriculture and Forestry, Hainan University, Danzhou 571737, Hainan Province, China | | | Zhao Linyan | Sanya Institute of Breeding and Multiplication, Hainan University, Sanya 572025, Hainan Province, China | | | Yu Qihang | Sanya Institute of Breeding and Multiplication, Hainan University, Sanya 572025, Hainan Province, China | | | Dong Wenbo | Sanya Institute of Breeding and Multiplication, Hainan University, Sanya 572025, Hainan Province, China | | | Li Fen | Sanya Institute of Breeding and Multiplication, Hainan University, Sanya 572025, Hainan Province, China
School of Tropical Agriculture and Forestry, Hainan University, Danzhou 571737, Hainan Province, China | lifen2010happy@sina.com | | Wu Shaoying | Sanya Institute of Breeding and Multiplication, Hainan University, Sanya 572025, Hainan Province, China
School of Tropical Agriculture and Forestry, Hainan University, Danzhou 571737, Hainan Province, China | wsywsy6000@hainanu.edu.cn |
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| Abstract:To clarify the developmental duration, internal anatomical structures, and responses to emamectin benzoate stress in Asian bean thrips Megalurothrips usitatus, the developmental duration was determined, and the reproductive systems of female and male adults were observed under a stereo microscope. Furthermore, the development of reproductive structures following treatment with sublethal concentrations of emamectin benzoate was investigated. The results showed that the development of M. usitatus comprises six stages, with increasing body size and progressively deepening body coloration. The digestive tract consists of the foregut, midgut, hindgut, and four Malpighian tubules. The female reproductive system includes ovaries with eight ovarioles, a spermatheca, and a sickle-shaped ovipositor; whereas male adults possess paired testes, accessory glands and a spine-like aedeagus. After treatment with a sublethal concentration (LC25) of emamectin benzoate, the“pupation”rate of M. usitatus decreased from 84.87% to 66.24%, and developmental malformations were observed in the ovarioles of female adults and the testes of male adults. These results indicate that sublethal concentrations of emamectin benzoate significantly inhibit“pupation”and metamorphic development in M. usitatus, and cause structural damage to the reproductive system. |
| keywords:Megalurothrips usitatus emamectin benzoate developmental duration digestive tract reproductive system |
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