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- Title
广西扶桑绵粉蚧寄生蜂发生情况调查.
- Authors
李金峰; 邓军; 陈华燕; 杨朗; 周忠实; 姜建军; 黄立飞; 桂富荣; 陈红松
- Abstract
【Objective】 In order to provide scientific reference for the control of Phenacoccus solenopsis Tinsley by natural enemies in Guangxi, the species, population dynamics and control effects of parasitic wasps of P. solenopsis were studied. 【Method】 From October, 2018 to October, 2019, about 450 P. solenopsis individuals were collected from designated locations in Beihai, Qinzhou, Chongzuo, and Fangchenggang separately in the middle of each month and were brought to the laboratory. The single P. solenopsis mummy was placed in a 2 m L centrifuge tube until the emergence of the parasitic wasp. The rest of P. solenopsis were placed on sprouted potatoes to allow continue feeding and were observed daily, the newly formed mummies were placed in a 2 m L centrifuge tube until the wasps emergence. The process lasted for10 d until no more mummies appeared. The number and percentage of P. solenopsis mummies were counted, the species of parasitic wasps were identified, the number of each parasitic wasp was recorded, and thepercentage of P. solenopsis mummies formed by each parasitic wasp was calculated. 【Result】 In total, nine species of parasitic wasps were collected from the four localities, five species of Encyrtidae:Aenasius arizonensis(Girault), Cheiloneurus sp., Anagyrus kamali Moursi, Acerophagus coccois Smith and Prochiloneurus nigricornis(Girault), three species of Aphididae: Marietta picta(André), Myiocnema comperei Ashmead and Promuscidea unfasciativentris Girault, one species of Platygastridae: Allotropa phenacocca Chen, Liu & Xu. A. coccois and Cheiloneurus sp. were gregarious species(more than one wasp individual emerged from one mummy), one mummy could emerge as many as 14 Cheiloneurus sp. adults. The overall parasitic rate of parasitic wasps was low(the rate ranged from 2.83% to 29.56%), but the emergence rate of P. solenopsis mummies was high(92.15%). Beihai was the richest in parasitic wasp resource, the highest parasitic rate and nine species of parasitic wasps were discovered there. Six species of parasitic wasps were collected both in Qinzhou and Fangchenggang, while five species of parasitic wasps were collected in Chongzuo. A. arizonensis and Cheiloneurus sp. were the dominant species, the number of the two species was about 17 times as that of the other seven species, the proportion of the P. solenopsis mummies formed by the two parasitic wasps was more than 80.00%. In the field, A. arizonensis was the absolute dominant species in May, while A. arizonensis and Cheiloneurus sp. predominated alternatively in different cities in other months. 【Conclusion】 The parasitic wasp resource of P. solenopsis in Guangxi is rich. At present, nine species have been disco-vered. A. arizonensis and Cheiloneurus sp. are the dominant species, the two species predominate alternatively.However, the overall parasitic rate of parasitic wasps is relatively low.
- Subjects
GUANGXI Zhuangzu Zizhiqu (China); MARIETTA (Ga.); PARASITIC wasps; FIRE ants; POPULATION dynamics; WASPS; MUMMIES
- Publication
Journal of Southern Agriculture, 2020, Vol 51, Issue 4, p853
- ISSN
2095-1191
- Publication type
Article
- DOI
10.3969/j.issn.2095-1191.2020.04.016