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Ancestral Monogamy Shows Kin Selection Is Key to the Evolution of Eusociality
It is found that mating with a single male, which maximizes relatedness, is ancestral for all eight independent eusocial lineages that are investigated, and monogamy was critical in the evolution of eussociality, strongly supporting the prediction of inclusive fitness theory. Expand
Can alloethism in workers of the bumblebee, Bombus terrestris, be explained in terms of foraging efficiency?
This work established whether workers of the bumblebee, Bombus terrestris (L.) (Hymenoptera; Apidae), exhibit alloethism, and quantified the size of workers engaging in foraging compared to those that remain in the nest, and confirmed that it is the larger bees that tend to forage. Expand
Trade-offs in group living: transmission and disease resistance in leaf-cutting ants
Both grooming and antibiotic secretions appeared to be important in resistance against the parasite, with the defences of small workers being particularly effective and group living in these ants may actually be associated with a net benefit in terms of disease dynamics. Expand
Worker caste polymorphism has a genetic basis in Acromyrmex leaf-cutting ants
It is shown that worker caste development in the leaf-cutting ant Acromyrmex echinatior has a significant genetic component, suggesting that a significant role of genetics may have been overlooked in the understanding of other complex polymorphisms of social insects. Expand
Multiple paternity or multiple queens: two routes to greater intracolonial genetic diversity in the eusocial Hymenoptera
It is suggested that fitness benefits resulting from increased intracolonial genetic diversity have played an important role in the evolution of polyandry, and possibly polygyny, in social insects. Expand
Molecular signatures of plastic phenotypes in two eusocial insect species with simple societies
Significance In eusocial insect societies, such as ants and some bees and wasps, phenotypes are highly plastic, generating alternative phenotypes (queens and workers) from the same genome. TheExpand
The Trojan hives: pollinator pathogens, imported and distributed in bumblebee colonies
It is demonstrated that commercially produced bumblebee colonies carry multiple, infectious parasites that pose a significant risk to other native and managed pollinators and more effective disease detection and management strategies are urgently needed to reduce the pathogen spillover threat. Expand
Emerging dangers: deadly effects of an emergent parasite in a new pollinator host.
The parasite N. ceranae is found in all seven wild bumblebee species sampled, and at multiple sites, with many of the bees having spores from this parasite in their guts, confirming that the parasite can infect bumblebees. Expand
Parasites in bloom: flowers aid dispersal and transmission of pollinator parasites within and between bee species
The results suggest that flowers are likely to be hotspots for the transmission of pollinator parasites and that considering potential vector, as well as host, species will be of general importance for understanding the distribution and transmission of parasites in the environment and between pollinators. Expand
Identity and Function of Scent Marks Deposited by Foraging Bumblebees
The chemical components of the tarsal glands were analyzed by combined gas chromatography–mass spectrometry for three species of bumblebee, Bombus terrestris, B. lapidarius, and B. pascuorum to determine which were important in inducing a repellent effect in workers. Expand