Comparative transcriptomics highlights convergent evolution of energy metabolic pathways in group-living spiders.
Zool Res
; 42(2): 195-206, 2021 Mar 18.
Article
de En
| MEDLINE
| ID: mdl-33709634
ABSTRACT
Although widely thought to be aggressive, solitary, and potentially cannibalistic, some spider species have evolved group-living behaviors. The distinct transition provides the framework to uncover group-living evolution. Here, we conducted a comparative transcriptomic study and examined patterns of molecular evolution in two independently evolved group-living spiders and twelve solitary species. We report that positively selected genes among group-living spider lineages are significantly enriched in nutrient metabolism and autophagy pathways. We also show that nutrient-related genes of group-living spiders convergently experience amino acid substitutions and accelerated relative evolutionary rates. These results indicate adaptive convergence of nutrient metabolism that may ensure energy supply in group-living spiders. The decelerated evolutionary rate of autophagy-related genes in group-living lineages is consistent with an increased constraint on energy homeostasis as would be required in a group-living environment. Together, the results show that energy metabolic pathways play an important role in the transition to group-living in spiders.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Comportement social
/
Araignées
/
Métabolisme énergétique
/
Évolution biologique
Aspects:
Determinantes_sociais_saude
Limites:
Animals
Langue:
En
Journal:
Zool Res
Année:
2021
Type de document:
Article
Pays d'affiliation:
Chine