Relaxed selection underlies genome erosion in socially parasitic ant species.
Animals
Ants
/ classification
Evolution, Molecular
Female
Gene Rearrangement
/ genetics
Genome, Insect
/ genetics
Genomics
/ methods
Host-Parasite Interactions
Insect Proteins
/ classification
Male
Parasites
/ classification
Phylogeny
Receptors, Odorant
/ classification
Social Behavior
Species Specificity
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
18 05 2021
18 05 2021
Historique:
received:
07
08
2020
accepted:
06
04
2021
entrez:
19
5
2021
pubmed:
20
5
2021
medline:
16
6
2021
Statut:
epublish
Résumé
Inquiline ants are highly specialized and obligate social parasites that infiltrate and exploit colonies of closely related species. They have evolved many times convergently, are often evolutionarily young lineages, and are almost invariably rare. Focusing on the leaf-cutting ant genus Acromyrmex, we compared genomes of three inquiline social parasites with their free-living, closely-related hosts. The social parasite genomes show distinct signatures of erosion compared to the host lineages, as a consequence of relaxed selective constraints on traits associated with cooperative ant colony life and of inquilines having very small effective population sizes. We find parallel gene losses, particularly in olfactory receptors, consistent with inquiline species having highly reduced social behavioral repertoires. Many of the genomic changes that we uncover resemble those observed in the genomes of obligate non-social parasites and intracellular endosymbionts that branched off into highly specialized, host-dependent niches.
Identifiants
pubmed: 34006882
doi: 10.1038/s41467-021-23178-w
pii: 10.1038/s41467-021-23178-w
pmc: PMC8131649
doi:
Substances chimiques
Insect Proteins
0
Receptors, Odorant
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
2918Commentaires et corrections
Type : ErratumIn
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