Conclusion
TEs are one of the powerful drivers of the adaptive evolution of organisms. The fig wasps live in the enclosed syconia of fig trees that are restricted in tropical and subtropical regions. The composition and burst patterns of the genomic TEs reflect their adaptation to the syconia microenvironment. Meanwhile, from the perspective of adaptation to the global climate changes, when the fig trees affected by geo-climatic changes and underwent drastic changes in the physiological characters such as the flowering cycle, the fig wasps may self-regulate to adapt to these changes in its habitat of the syconia by regulation of genes related to Circadian entrainment pathways through the changes of TEs in the genomes. In the future, further verification of the functions of TEs on the regulation of related genes will help us understand how this closely related symbiotic system between the figs and fig wasps has been adapted to environmental changes during the evolutionary process.