家蝇幼虫肠道可培养非厌氧细菌对家蝇成虫取食及产卵的影响

Effects of intestinal culturable non-anaerobic bacteria in Musca domestica larvae on feeding and oviposition of M.domestica adults

目的探究家蝇幼虫各种肠道细菌对家蝇成虫取食及产卵的影响。方法采用传统分离培养法分离家蝇3日龄幼虫肠道内可培养非厌氧细菌,并利用这些细菌进行成虫取食选择及产卵选择实验。统计学分析用SPSS 20.0软件,组间比较采用单因素方差分析,独立样本两两比较采用t检验。结果在家蝇幼虫肠道中共分离出9属10种细菌,分别为霍氏肠杆菌、肺炎克雷伯菌、铜绿假单胞菌、贝雷兹不动杆菌、斯氏普罗威登斯菌、阴沟肠杆菌、乳酸乳球菌、纺锤形赖氨酸芽孢杆菌、居幼虫普罗威登斯菌和沙福芽孢杆菌。其中霍氏肠杆菌、乳酸乳球菌和阴沟肠杆菌对家蝇成虫取食有吸引作用,吸引率分别为(80.88±5.60)%、(60.77±4.13)%和(61.59±4.13)%,而其余7种细菌有抑制作用;10种细菌对家蝇成虫产卵均有吸引作用,其中吸引效果最好的有霍氏肠杆菌、阴沟肠杆菌、乳酸乳球菌、纺锤形赖氨酸芽孢杆菌和沙福芽孢杆菌,吸引率均可达100%。结论明确了家蝇幼虫肠道细菌对成虫取食及产卵的影响,阐明了家蝇成虫取食主要受营养调控,产卵主要受气味调控,为家蝇成虫引诱剂或驱避剂研发奠定了基础。

Objective To investigate the effects of intestinal bacteria in Musca domestica larvae on their feeding and oviposition into the adulthood.Methods Traditional methods were used for isolation and culture of culturable nonanaerobic bacteria from the intestinal tracts of 3-day-old M.domestica larvae.These bacteria were used to carry out feeding and oviposition preference experiments on M.domestica adults.With SPSS 20.0 software for statistical analysis,one-way analysis of variance was conducted for comparison between groups,and the t-test was used for comparison between two independent samples.Results Ten bacteria belonging to 9 genera were isolated from the intestinal tracts of M.domestica larvae:Enterobacter hormaechei,Klebsiella pneumoniae,Pseudomonas aeruginosa,Acinetobacter bereziniae,Providencia stuartii,E.cloacae,Lactococcus lactis,Lysinibacillus fusiformis,P.vermicola,and Bacillus safensis.E.hormaechei,L.lactis,and E.cloacae were found to exert attracting effects on feeding of M.domestica adults,yielding attracting rates of(80.88±5.60)%,(60.77±4.13)%,and(61.59±4.13)%,respectively,and the other seven bacteria were found to inhibit feeding.Ten bacteria were all revealed to have attracting effects on oviposition of M.domestica adults.E.hormaechei,E.cloacae,L.lactis,L.fusiformis,and B.safensis showed strongest attracting effects,with attracting rates of 100%.Conclusion It has been confirmed that intestinal bacteria in M.domestica larvae have effects on their feeding and oviposition into their adulthood,and it is clarified that M.domestica adults’feeding and oviposition are mainly regulated by nutrition and odor,respectively.The results lay a foundation for research and development of new bacterial repellents or attractants of M.domestica adults.