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Ancestral Developmental Potential Facilitates Parallel Evolution in Ants
TLDR
An ancestral developmental potential to produce a “supersoldier” subcaste that has been actualized at least two times independently in the hyperdiverse ant genus Pheidole is uncovered, which may facilitate the adaptive and parallel evolution of phenotypes. Expand
The genome of the fire ant Solenopsis invicta
TLDR
A phylogenetic analysis revealed that an ancestral vitellogenin gene first underwent a duplication that was followed by possibly independent duplications of each of the daughter viteLLogenins, possibly reflecting differential selection acting on the queen and worker castes. Expand
Self-restraint and sterility in workers of Acromyrmex and Atta leafcutter ants
TLDR
It is concluded that Atta workers are sterile, while Acromyrmex workers display reproductive self-restraint, possibly representing an earlier stage in the evolution towards worker sterility. Expand
A simple genetic basis for complex social behaviour mediates widespread gene expression differences
TLDR
Gene ontology analysis showed that SB/SB queens upregulate reproductive genes faster than SB/Sb queens, and results suggest that many genes in the supergene are involved in regulating social organization and queen phenotypes in fire ants. Expand
Antimicrobial Defense Shows an Abrupt Evolutionary Transition in the Fungus-Growing Ants
TLDR
A comparative analysis of the size of the gland reservoir across the fungus-growing ants suggests that the relationship between leaf-cutting ants and their parasites is distinctly different from that for other attine ants, in accord with the hypothesis that multiple mating by queens evolved to improve colony-level disease resistance. Expand
Gnamptogenys hartmani Wheeler (Ponerinae: Ectatommini): an agro-predator of Trachymyrmex and Sericomyrmex fungus-growing ants
TLDR
It is suggested that the presence of long spinules on the larval mandibles in the genus Gnamptogenys, comparable to those found in attine larvae, may have pre-adapted G. hartmani to fungus eating. Expand
Are workers of Atta leafcutter ants capable of reproduction?
TLDR
It is concluded that Atta workers are not completely infertile, but that worker fertility is low compared to the sister genus Acromyrmex, where workers routinely produce normally-size males after queen loss in the laboratory. Expand
Sperm length evolution in the fungus-growing ants
TLDR
It is concluded that sperm production trade-offs in males have been the major selective force affecting sperm length across the fungus-growing ants, rather than storage constraints in females. Expand
Sex allocation in fungus-growing ants: worker or queen control without symbiont-induced female bias
TLDR
The fungal symbiont does not distort the ants' sex ratio in these species, and is consistent with either worker or queen control, but never with fungal control for any realistic value of k. Expand
The economy of worker reproduction in Acromyrmex leafcutter ants
TLDR
It is shown that orphaned nests give priority to raising dispersing queen-derived sexuals (virgin queens, haploid and diploid queen sons) over raising worker sons, and sex allocation, the timing of the switch between raising queen offspring and worker Sons, and differences in body mass between queen and worker sons are estimated. Expand
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