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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 36, No. 6, 2015, pp. 320-327
Bioline Code: zr15037
Full paper language: English
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 36, No. 6, 2015, pp. 320-327

 en Accelerated evolution of constraint elements for hematophagic adaptation in mosquitoes
Wang, Ming-Shan; Adeola, Adeniyi C.; Li, Yan; Zhang, Ya-Ping & Wu, Dong-Dong

Abstract

Comparative genomics is a powerful approach that comprehensively interprets the genome. Herein, we performed whole genome comparative analysis of 16 Diptera genomes, including four mosquitoes and 12 Drosophilae. We found more than 540 000 constraint elements (CEs) in the Diptera genome, with the majority found in the intergenic, coding and intronic regions. Accelerated elements (AEs) identified in mosquitoes were mostly in the protein-coding regions (>93%), which differs from vertebrates in genomic distribution. Some genes functionally enriched in blood digestion, body temperature regulation and insecticide resistance showed rapid evolution not only in the lineage of the recent common ancestor of mosquitoes (RCAM), but also in some mosquito lineages. This may be associated with lineage-specific traits and/or adaptations in comparison with other insects. Our findings revealed that although universally fast evolution acted on biological systems in RCAM, such as hematophagy, same adaptations also appear to have occurred through distinct degrees of evolution in different mosquito species, enabling them to be successful blood feeders in different environments.

Keywords
Mosquitoes; Accelerated elements; Constraint elements; Hematophagy

 
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