Document Detail

Independent divergence of 13- and 17-y life cycles among three periodical cicada lineages.
MedLine Citation:
PMID:  23509294     Owner:  NLM     Status:  MEDLINE    
The evolution of 13- and 17-y periodical cicadas (Magicicada) is enigmatic because at any given location, up to three distinct species groups (Decim, Cassini, Decula) with synchronized life cycles are involved. Each species group is divided into one 13- and one 17-y species with the exception of the Decim group, which contains two 13-y species-13-y species are Magicicada tredecim, Magicicada neotredecim, Magicicada tredecassini, and Magicicada tredecula; and 17-y species are Magicicada septendecim, Magicicada cassini, and Magicicada septendecula. Here we show that the divergence leading to the present 13- and 17-y populations differs considerably among the species groups despite the fact that each group exhibits strikingly similar phylogeographic patterning. The earliest divergence of extant lineages occurred ∼4 Mya with one branch forming the Decim species group and the other subsequently splitting 2.5 Mya to form the Cassini and Decula species groups. The earliest split of extant lineages into 13- and 17-y life cycles occurred in the Decim lineage 0.5 Mya. All three species groups experienced at least one episode of life cycle divergence since the last glacial maximum. We hypothesize that despite independent origins, the three species groups achieved their current overlapping distributions because life-cycle synchronization of invading congeners to a dominant resident population enabled escape from predation and population persistence. The repeated life-cycle divergences supported by our data suggest the presence of a common genetic basis for the two life cycles in the three species groups.
Teiji Sota; Satoshi Yamamoto; John R Cooley; Kathy B R Hill; Chris Simon; Jin Yoshimura
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2013-03-18
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  110     ISSN:  1091-6490     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  2013 Apr 
Date Detail:
Created Date:  2013-04-24     Completed Date:  2013-06-27     Revised Date:  2013-07-11    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  6919-24     Citation Subset:  IM    
Department of Zoology, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
Data Bank Information
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MeSH Terms
Amplified Fragment Length Polymorphism Analysis
Base Sequence
Bayes Theorem
Biological Evolution*
DNA, Mitochondrial / genetics
Genetic Speciation*
Haplotypes / genetics
Hemiptera / genetics,  physiology*
Life Cycle Stages / genetics,  physiology*
Likelihood Functions
Models, Genetic
Molecular Sequence Data
Sequence Analysis, DNA
Species Specificity
Time Factors
United States
Reg. No./Substance:
0/DNA, Mitochondrial
Comment In:
Proc Natl Acad Sci U S A. 2013 Apr 23;110(17):6620-1   [PMID:  23572580 ]

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