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Keywords = cryptic fig wasp species

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18 pages, 1707 KB  
Article
Comparative Analysis of Cryptic Fig Wasp Species Reveals Sexually Divergent Gene Transcriptional Regulation
by Hongxia Hou, Shasha Liu, Lin Li, Yalei Su, Binbin Gong and Jing Liu
Diversity 2025, 17(10), 722; https://doi.org/10.3390/d17100722 - 16 Oct 2025
Viewed by 579
Abstract
Cryptic species are morphologically indistinguishable but possess genetically distinct taxa. Alternative splicing (AS) regulates physiological processes, thereby facilitating ecological adaptation and evolution. To explore the sex-specific differences in transcriptional regulation among cryptic species, we profiled both AS and gene expression in two cryptic [...] Read more.
Cryptic species are morphologically indistinguishable but possess genetically distinct taxa. Alternative splicing (AS) regulates physiological processes, thereby facilitating ecological adaptation and evolution. To explore the sex-specific differences in transcriptional regulation among cryptic species, we profiled both AS and gene expression in two cryptic species of Wiebesia pumilae (WPDZ19 and WPHS), which differ in Wolbachia infection status. The results showed that 101 and 71 differentially alternatively spliced genes (DASs) were identified in female and male groups, respectively. Functional enrichment revealed that female DASs were significantly enriched in mitotic cell cycle process, cytoskeleton organization, cellular component organization, and DNA damage. On the other hand, male DASs were predominantly related to actin, cytoskeleton, and muscle development. Gene set enrichment analysis of DASs also revealed that the regulation of mitotic nuclear division and meiotic nuclear division were enriched in female and male groups, respectively. We identified 4509 DEGs in females and 3645 in males, with minimal overlap between DASs and DEGs. Moreover, RT-PCR has been used to validate the key genes. Our results revealed sexually divergent transcriptional regulation patterns between WPDZ19 and WPHS, suggesting a potential association with Wolbachia persistence. Our findings provide new insights into the study of adaptive evolution of cryptic species. Full article
(This article belongs to the Special Issue Advances in Hymenoptera Diversity and Biology)
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