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亚洲玉米螟越冬幼虫存活和滞育解除与水分摄入的关系
引用本文:文丽萍,周大荣,王振营,何康来. 亚洲玉米螟越冬幼虫存活和滞育解除与水分摄入的关系[J]. 昆虫学报, 2000, 43(-1): 137-142
作者姓名:文丽萍  周大荣  王振营  何康来
摘    要:在22~28℃和16~22℃变温条件下研究了水分对亚洲玉米螟Ostrinia furnacalis (Guenée)越冬幼虫存活、滞育解除及成虫生殖潜力的影响。结果表明:在越冬幼虫复苏后至化蛹阶段,水分是影响越冬幼虫完成滞育发育的关键因子,只有满足其饮水需求,才能解除滞育而化蛹。幼虫的存活和化蛹率随幼虫饮水后体重的增加而增加。幼虫化蛹的早晚受温度和水分的综合影响,在22~28℃下越冬幼虫化蛹进度较快,在复苏后35天时为最佳饮水时间,比在16~22℃下早5~10天。此阶段如能满足幼虫的需水量,幼虫死亡率低,化蛹率高,而只在滞育发育早期或后期饮水时,死亡率高,化蛹率低。同一变温条件下,其滞育发育因饮水时间的推迟而延长。因此可以推测春季温度偏高、干旱的气候条件不利于亚洲玉米螟越冬代的大发生,反之亦然。

关 键 词:亚洲玉米螟  滞育解除  变温  水分  

Effect of water drinking on survival and diapause terminationin the Asian corn borer,Ostrinia furnacalisat alternative temperatures
WEN Li-ping,ZHOU Da-rong,WANG Zhen-ying,HE Kang-lai. Effect of water drinking on survival and diapause terminationin the Asian corn borer,Ostrinia furnacalisat alternative temperatures[J]. Acta Entomologica Sinica, 2000, 43(-1): 137-142
Authors:WEN Li-ping  ZHOU Da-rong  WANG Zhen-ying  HE Kang-lai
Abstract:Effects of water intake on diapause termination and pupation of overwintered larvae of Asian corn borer (ACB) were determined by providing the larvae with water on the 5th, 15th, 25th, 35th, 45th and 55th day after incubation at the alternative temperatures from 22℃ to 28 ℃(22~28℃) and 16℃ to 22℃(16~22℃), respectively. The results showed that the larvae were incapable of terminating diapause and completing prepupal development until they had drank water. The survival and pupation rates of the larvae increased with increase of larval weight because of water drinking. The highest pupation rate at 22~28℃ was recorded when the larvae drank water on the 35th day while that at 16~22℃ occurred when the larvae drank on the 55th day. The diapause development of the larvae was more rapid under 22~28℃than under 16~22℃ whenever water was offered. Therefore, it is concluded that the raining time and precipitation in spring may affect the pupation progress and rate of development of the overwintered ACB larvae in field.
Keywords:Ostrinia furnacalis  terminating diapause  drinking water  alternated temperature
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