Adaptive evolution of vertebrate-type cryptochrome in the ancestors of Hymenoptera | Zendy

Bo Wang | Zendy; Jinhua Xiao | Zendy; ShengNan Bian | Zendy; Haifeng Gu | Zendy; DaWei Huang | Zendy

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Adaptive evolution of vertebrate-type cryptochrome in the ancestors of Hymenoptera

Author(s) -

Bo Wang,

Jinhua Xiao,

ShengNan Bian,

Haifeng Gu,

DaWei Huang

Publication year - 2012

Publication title -

biology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.596

H-Index - 110

eISSN - 1744-957X

pISSN - 1744-9561

DOI - 10.1098/rsbl.2012.0958

Subject(s) - biology , hymenoptera , vertebrate , insect , adaptation (eye) , evolutionary biology , natural selection , pollinator , zoology , gene , genetics , ecology , selection (genetic algorithm) , pollination , pollen , neuroscience , artificial intelligence , computer science

One of the most mysterious aspects of insect clock mechanisms is that some insects, including Hymenoptera and Tribolium, only express a vertebrate-type cryptochrome (cry2). It is unknown whether or not cry2 underwent adaptive evolution in these insects. In the present study, we cloned and sequenced the full-length cry2 from a fig pollinator species, Ceratosolen solmsi (Hymenoptera: Chalcidoidea: Agaonidae), and examined the molecular evolution and daily expression of this gene. Our results suggest that cry2 underwent positive selection in the branch leading to hymenopteran insects. The function of CRY2 might have been fixed since undergoing natural selection in the ancestor of Hymenoptera. Male pollinators showed stronger rhythmicity in the host figs, which reflect an adaptation to their life cycles.

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