GEPHE SUMMARY Print
Gephebase Gene
Entry Status
Published
GepheID
GP00002138
Main curator
Martin
PHENOTYPIC CHANGE
Trait #1
Trait Category
Trait State in Taxon A
winged males (aphicarus allele)
Trait State in Taxon B
wingless males
Trait #2
Trait Category
Trait State in Taxon A
winged males (aphicarus allele); more active
Trait State in Taxon B
wingless males; less active
Ancestral State
Taxon A
Taxonomic Status
Taxon A
Common Name
pea aphid
Synonyms
Acyrthosiphum pisum; pea aphid; Acyrthosiphon pisum (Harris, 1776); Acyrhosiphum pisum
Rank
species
Lineage
Show more ... oda; Mandibulata; Pancrustacea; Hexapoda; Insecta; Dicondylia; Pterygota; Neoptera; Paraneoptera; Hemiptera; Sternorrhyncha; Aphidomorpha; Aphidoidea; Aphididae; Aphidinae; Macrosiphini; Acyrthosiphon
NCBI Taxonomy ID
is Taxon A an Infraspecies?
No
Taxon B
Common Name
pea aphid
Synonyms
Acyrthosiphum pisum; pea aphid; Acyrthosiphon pisum (Harris, 1776); Acyrhosiphum pisum
Rank
species
Lineage
Show more ... oda; Mandibulata; Pancrustacea; Hexapoda; Insecta; Dicondylia; Pterygota; Neoptera; Paraneoptera; Hemiptera; Sternorrhyncha; Aphidomorpha; Aphidoidea; Aphididae; Aphidinae; Macrosiphini; Acyrthosiphon
NCBI Taxonomy ID
is Taxon B an Infraspecies?
No
GENOTYPIC CHANGE
Presumptive Null
No
Molecular Type
Aberration Type
Insertion Size
-
Molecular Details of the Mutation
the api allele from winged males is a 120kb insertion that includes a copy of the follistatin gene
Experimental Evidence
Authors
Li B; Bickel RD; Parker BJ; Saleh Ziabari O; Liu F; Vellichirammal NN; Simon JC; Stern DL; et al. ... show more
Abstract
Wing dimorphisms have long served as models for examining the ecological and evolutionary tradeoffs associated with alternative phenotypes. Here, we investigated the genetic cause of the pea aphid (Acyrthosiphon pisum) male wing dimorphism, wherein males exhibit one of two morphologies that differ in correlated traits that include the presence or absence of wings. We mapped this trait difference to a single genomic region and, using third generation, long-read sequencing, we identified a 120 kb insertion in the wingless allele. This insertion includes a duplicated follistatin gene, which is a strong candidate gene in the minimal mapped interval to cause the dimorphism. We found that both alleles were present prior to pea aphid biotype lineage diversification, we estimated that the insertion occurred millions of years ago, and we propose that both alleles have been maintained in the species, likely due to balancing selection.

© 2020, Li et al.
Additional References
RELATED GEPHE
Related Genes
No matches found.
Related Haplotypes
No matches found.
EXTERNAL LINKS
COMMENTS
@GeneDuplication @BalancingSelection ; ancient polymorphism in the pea aphid lineage
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