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Adult brain neurogenesis does not account for behavioral differences between solitary and social bees.
J Insect Physiol
December 2024
Centre de Recherches sur la Cognition Animale (UMR5169), Centre de Biologie Intégrative, Université de Toulouse, CNRS, UPS, France. Electronic address:
In many taxa, increasing attention is being paid to how group living shapes the expression of brain plasticity and behavioural flexibility. In eusocial insects, the lifelong commitment of workers and queens to a reproductive or non-reproductive caste is accompanied by a loss of behavioural totipotency, and often, by the expression of a limited behavioural repertoire in workers due to their specialisation. On the other hand, individuals of solitary species have a broader behavioural repertoire as they have to perform all the tasks themselves.
View Article and Find Full Text PDFColoniality is strongly shaped by aspects of social foraging behaviour. For example, colonies may be important sources of information, while food competition may increase foraging efforts and limit colony size. Understanding foraging ecology considering these apparent trade-offs is required to develop a better understanding of colonial living.
View Article and Find Full Text PDFAge-related cataract without surgery is related to exacerbated depression symptoms: a cross-sectional study of Chinese adults from Anhui, China.
Front Med (Lausanne)
October 2024
Department of Ophthalmology, The Lu'an Hospital Affiliated to Anhui Medical University, Lu'an, Anhui, China.
Objective: The present study sought to evaluate the relationship between age-related cataracts, a prevalent ocular condition among the elderly, and the occurrence of depressive symptoms within a cohort of Chinese adults residing in Anhui, China.
Methods: A survey involving 252 Chinese individuals aged 65 years and older was conducted at Lu'an People's Hospital. Depressive symptoms were assessed using the Hamilton Depression Scale (HAMD) consisting of 17 items, while age-related cataracts were clinically classified according to the Lens Opacities Classification System (LOCS) III.
Termites and other social insects as emerging model organisms of ageing research: how to achieve a long lifespan and a high fecundity.
J Exp Biol
November 2024
Evolutionary Biology & Ecology, University of Freiburg, D-79104 Freiburg, Germany.
Social insects (termites, ants and some bees and wasps) are emerging model organisms of ageing research. In this Commentary, I outline which advantages they offer compared with other organisms. These include the co-occurrence of extraordinarily long-lived, highly fecund queens together with short-lived workers within colonies that share the same genetic background.
View Article and Find Full Text PDFThe brain atlas of a subsocial bee reflects that of eusocial Hymenoptera.
Genes Brain Behav
December 2024
Department of Biology, York University, Toronto, Ontario, Canada.
The evolutionary transition from solitary life to group-living in a society with cooperative brood care, reproductive division of labor and morphological castes is associated with increased cognitive demands for task-specialization. Associated with these demands, the brains of eusocial Hymenoptera divide transcriptomic signatures associated with foraging and reproduction to different populations of cells and also show diverse astrocyte and Kenyon cell types compared with solitary non-hymenopteran insects. The neural architecture of subsocial bees, which represent evolutionary antecedent states to eusocial Hymenoptera, could then show how widely this eusocial brain is conserved across aculeate Hymenoptera.
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