| 多异瓢虫与蠋蝽成虫对甜菜夜蛾的捕食功能反应 |
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| 引用本文：胡芳真,娜迪热·艾则孜,邓梅,王顺利,俞金燕,黎春慧,帕提玛·乌木尔汗,马德英.多异瓢虫与蠋蝽成虫对甜菜夜蛾的捕食功能反应.植物保护学报,2025,52(6):1495-1502 |
| DOI：10.13802/j.cnki.zwbhxb.2025.2025069 |
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| 中文摘要:为明确多异瓢虫Hippodamia variegata或蠋蝽Arma custos成虫对甜菜夜蛾Spodoptera exigua卵和低龄幼虫的捕食潜能以及捕食功能差异，将单头饥饿处理24 h的多异瓢虫或蠋蝽成虫分别与不同密度卵期和1～3龄期甜菜夜蛾进行组合，24 h后统计多异瓢虫或蠋蝽成虫的捕食量，并基于logistic逻辑回归分析结果、捕食功能反应和搜寻效应分析两者的捕食能力。结果显示：多异瓢虫成虫对甜菜夜蛾卵及2龄幼虫、蠋蝽成虫对甜菜夜蛾1～3龄幼虫的捕食功能反应均属于Holling Ⅱ型，理论日最大捕食量分别为71.430粒和45.450、47.600、21.820、23.380头；多异瓢虫成虫对甜菜夜蛾1龄幼虫、蠋蝽成虫对甜菜夜蛾卵的捕食功能反应属于Holling Ⅲ型，理论日最大捕食量为73.870头和69.680粒。多异瓢虫成虫对甜菜夜蛾卵及2龄幼虫、蠋蝽成虫对甜菜夜蛾1～3龄幼虫的搜寻效应均随猎物密度的上升而显著降低，呈现明显的负密度依赖性；蠋蝽成虫表现出更广的捕食范围，可捕食甜菜夜蛾1～3龄幼虫；在试验密度范围内，多异瓢虫对甜菜夜蛾2龄幼虫的捕食效率显著高于蠋蝽对甜菜夜蛾2、3龄幼虫的捕食效率。表明多异瓢虫或蠋蝽成虫对甜菜夜蛾卵和低龄幼虫具有捕食潜能且捕食功能存在一定差异。 |
| 中文关键词:多异瓢虫 蠋蝽 甜菜夜蛾 生物防治 捕食功能 |
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| Predatory functional responses of variegated ladybird Hippodamia variegata and predatory stink bug Arma custos adults to beet armyworm Spodoptera exigua |
| Author Name | Affiliation | E-mail | | Hu Fangzhen | College of Agronomy, Xinjiang Agricultural University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China | | | Aizezi Nadire | College of Agronomy, Xinjiang Agricultural University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China | | | Deng Mei | Agriculture and Rural Bureau of Midong District, Urumqi 830000, Xinjiang Uygur Autonomous Region, China | | | Wang Shunli | Agriculture and Rural Bureau of Midong District, Urumqi 830000, Xinjiang Uygur Autonomous Region, China | | | Yu Jinyan | Agriculture and Rural Bureau of Midong District, Urumqi 830000, Xinjiang Uygur Autonomous Region, China | | | Li Chunhui | College of Agronomy, Xinjiang Agricultural University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China | | | Wumuerhan Patima | College of Agronomy, Xinjiang Agricultural University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China | patima530@126.com | | Ma Deying | College of Agronomy, Xinjiang Agricultural University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China | mdyxnd@163.com |
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| Abstract:To clarify the predation potential and functional differences of adults of the multicolored ladybird beetle Hippodamia variegata and the predatory stink bug Arma custos against the eggs and early-instar larvae of the beet armyworm Spodoptera exigua, individual predators, starved for 24 h were exposed to varying densities of S. exigua eggs or 1 st-3 rd instar larvae. After 24 h, the number of prey consumed was recorded. Predatory capacity was evaluated using logistic regression, functional response models, and searching response efficiency analyses. The results demonstrated that adult H. variegata exhibited Holling type Ⅱ functional responses to S. exigua eggs and 2 nd-instar larvae, whereas adult A. custos displayed type Ⅱ responses to 1 st-3 rd instar larvae. Their theoretical maximum daily consumptions were 71.430 eggs and 45.450 larvae for H. variegata, and 47.600, 21.820, and 23.380 larvae for A. custos（1 st-3 rd instars, respectively）. In contrast, the functional response of adult H. variegata to 1 st-instar larvae and that of A. custos to S. exigua eggs followed Holling Ⅲ, with theoretical maximum daily consumptions of 73.870 and 69.680 prey items, respectively. The searching efficiency of consumptions significantly with increasing prey density, indicating clear negative density dependence. Arma custos adults exhibited a broader prey-instar range（1 st-3 rd instars）, while within the tested density range, H. variegata showed significantly higher predation efficiency on 2 nd-instar larvae than A. custos did on 2 nd-3 rd instars. These findings indicate that both H. variegata and A. custos adults possess strong predation potential against S. exigua eggs and early-instar larvae, though their predatory functional responses differ. |
| keywords:Hippodamia variegata Arma custos Spodoptera exigua biological control functional response |
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