Effects of photoperiod on the phenotype,intestinal microbes and immunity of oriental fruit fly Bactrocera dorsalis
To investigate the ecological effects of photoperiod on oriental fruit fly Bactrocera dorsalis,the changes in the phenotype,intestinal microbes,and immunity of B.dorsalis were studied under three photoperiods:full light(24 L:0 D),full dark(0 L:24 D)and CK(14 L:10 D).The results showed that after exposure to full light and full dark conditions,the larval duration was 5.51 d and 5.40 d,respec-tively,with pupal weights of 14.47 mg and 10.82 mg,significantly lower than those under CK condi-tions.The ovarian development of female adults was significantly inhibited.Under full light and full dark treatments,the Shannon index,Ace index and Chao index in terms of intestinal microbes were sig-nificantly lower than compared to CK,while the Simpson index was significantly higher.After the three photoperiod treatments,the intestinal microbes were richer in CK compared to full light and full dark treatments,with a total of 36 phyla.Concentrated groupings of the intestinal microbial samples for the three photoperiod treatments were observed,with no overlap between groups,and samples from full light and full dark treatments were distant from CK samples.Intestinal microbes after full light and full dark treatments were significantly different from those under CK conditions.Furthermore,and the mor-tality of B.dorsalis infected by nematodes after full light and full dark treatments increased signifi-cantly,reaching 80％and 90％,respectively.
NETL
NSTL
万方数据
维普
