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The origin and evolution of social insect queen pheromones: Novel hypotheses and outstanding problems.
TLDR
It is provided compelling evidence that these pheromones should best be seen as honest signals of fertility as opposed to suppressive agents that chemically sterilize the workers against their own best interests.
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The role of juvenile hormone in dominance behavior, reproduction and cuticular pheromone signaling in the caste-flexible epiponine wasp, Synoeca surinama
TLDR
The endocrine profile of S. surinama shows surprising differences from those of other caste-flexible wasps, although a rise in JH titers in replacement queens is a common theme, and hormones which regulate caste-plasticity can lose these roles even while caste- Plasticity is preserved.
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Co-occurrence of three types of egg policing in the Norwegian wasp Dolichovespula norwegica
TLDR
Results from the monogynous wasp Dolichovespula norwegica are presented, which show that all three kinds of policing—queen policing, worker policing and “selfish” worker policing—co-occur, and that policing workers obtained both direct fitness benefits as well as indirect (inclusive) fitness.
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Reproductive status, endocrine physiology and chemical signaling in the Neotropical, swarm-founding eusocial wasp Polybia micans
TLDR
A significant divergence in hormone function in swarm-founding wasps compared with independently founding ones is found, suggesting that JH may prime the ovaries for further development.
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Hormonal pleiotropy helps maintain queen signal honesty in a highly eusocial wasp
TLDR
Results suggest that queen signal honesty in this system is maintained by queen fertility and queen signal production being under shared endocrine control.
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Extreme Effects of Season on the Foraging Activities and Colony Productivity of a Stingless Bee (Melipona asilvai Moure, 1971) in Northeast Brazil
This study reports the influence of season on foraging activities and internal colonial parameters of Melipona asilvai in an Atlantic forest area of northeast Brazil. We used video cameras connected…
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The University of Chicago Soldiers in a Stingless Bee : Work Rate and Task Repertoire Suggest They Are an Elite Force Author ( s ) :
TLDR
The first test of the “rare specialist” hypothesis in a eusocial bee is reported, and it is found that soldiers worked more and performed a greater variety of tasks than other workers, particularly early in life.
Repeated evolution of soldier sub-castes suggests parasitism drives social complexity in stingless bees
TLDR
The discovery of a guard caste in ten species of stingless bees is found and the evolution of the guard caste is associated with parasitization by robber bees, revealing unexpected diversity in the social organization of Stingless bees.
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Appetite for self-destruction: suicidal biting as a nest defense strategy in Trigona stingless bees
TLDR
The results indicate that suicidal biting may be a widespread defense strategy in stingless bees, but it is not universal and has both parallels and differences with other self-sacrificial worker insects, such as the honey bee.
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Do Primitively Eusocial Wasps Use Queen Pheromones to Regulate Reproduction? A Case Study of the Paper Wasp Polistes satan
TLDR
The results show that although specific compounds were enhanced in dominant, reproductively active females, a blend of five of these compounds did not inhibit development of the ovaries of female nestmates, and the dominant female had to be physically present to prevent subordinate females from reproducing.
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