Pheromone representation in the ant antennal lobe changes with age

Current Biology, Journal Year: 2024, Volume and Issue: 34(14), P. 3233 - 3240.e4

Published: June 13, 2024

While the neural basis of age-related decline has been extensively studied,1Damoiseaux J.S. Effects aging on functional and structural brain connectivity.Neuroimage. 2017; 160: 32-40https://doi.org/10.1016/j.neuroimage.2017.01.077Crossref PubMed Scopus (348) Google Scholar,2Tamura T. Chiang A.-S. Ito N. Liu H.-P. Horiuchi J. Tully Saitoe M. Aging specifically impairs amnesiac-dependent memory in Drosophila.Neuron. 2003; 40: 1003-1011https://doi.org/10.1016/S0896-6273(03)00732-3Abstract Full Text PDF (0) Scholar,3Swenson B.L. Meyer C.F. Bussian T.J. Baker D.J. Senescence disorders central nervous system.Transl. Med. Aging. 2019; 3: 17-25https://doi.org/10.1016/j.tma.2019.01.002Crossref Scholar less is known about changes function during pre-senescent stages adulthood. Adult plasticity likely a key factor social insect age polyethism, where individuals perform different tasks as they divide labor an age-dependent manner.4Beshers S.N. Fewell J.H. Models division insects.Annu. Rev. Entomol. 2001; 46: 413-440https://doi.org/10.1146/annurev.ento.46.1.413Crossref (674) Scholar,5Richardson T.O. Kay Braunschweig R. Journeau O.A. Rüegg McGregor S. Los Rios P.D. Keller L. Ant behavioral maturation mediated by stochastic transition between two fundamental states.Curr. Biol. 2021; 31: 2253-2260.e3https://doi.org/10.1016/j.cub.2020.05.038Abstract (12) Scholar,6Caminer M.A. Libbrecht Majoe Ho D.V. Baumann P. Foitzik Task-specific odorant receptor expression worker antennae indicates that sensory filters regulate ants.Commun. 2023; 6: 1004https://doi.org/10.1038/s42003-023-05273-4Crossref Scholar,7Ferguson S.T. Bakis I. Edwards N.D. Zwiebel L.J. Age task modulate olfactory sensitivity Florida carpenter ant Camponotus floridanus.Insects. 14: 724https://doi.org/10.3390/insects14090724Crossref Scholar,8Page R.E. Erber Levels organization evolution labor.Naturwissenschaften. 2002; 89: 91-106https://doi.org/10.1007/s00114-002-0299-xCrossref Scholar,9Lucas C. Ben-Shahar Y. The foraging gene modulator labour insects.J. Neurogenet. 35: 168-178https://doi.org/10.1080/01677063.2021.1940173Crossref Primarily, workers from nursing to tasks,5Richardson Scholar,10Robinson G.E. Page Huang Z.-Y. Temporal polyethism insects developmental process.Anim. Behav. 1994; 48: 467-469https://doi.org/10.1006/anbe.1994.1260Crossref become more aggressive, readily display alarm behavior11Robinson Modulation pheromone perception honey bee: evidence for based hormonally regulated response thresholds.J. Comp. Physiol. 1987; 613-619https://doi.org/10.1007/BF00611934Crossref Scholar,12Pokorny Sieber L.-M. Hofferberth J.E. Bernadou A. Ruther Age-dependent release ponerine ant.J. Exp. 2020; 223218040https://doi.org/10.1242/jeb.218040Crossref Scholar,13Norman V.C. Hoppé Hughes W.O.H. Old wise but not size: factors affecting threat behaviour nestmate recognition Acromyrmex echinatior leaf-cutting ants.Insectes Soc. 2014; 61: 289-296https://doi.org/10.1007/s00040-014-0355-5Crossref Scholar,14Togni O.C. Giannotti E. Colony defense behavior primitively eusocial wasp, Mischocyttarus cerberus related age.J. Insect Sci. 2010; 10: 136https://doi.org/10.1673/031.010.13601Crossref (10) Scholar,15Giray Genetic variation temporal colony defensiveness bee, Apis mellifera.Behav. Ecol. 2000; 11: 44-55https://doi.org/10.1093/beheco/11.1.44Crossref Scholar,16Norman Butterfield Drijfhout F. Tasman K. Alarm composition activity fungus-growing ants.J. Chem. 43: 225-235https://doi.org/10.1007/s10886-017-0821-4Crossref get older. it unknown how these dynamics are neurally regulated, could partially be generated altered salience behaviorally relevant stimuli.4Beshers Here, we investigated odor coding antennal lobe (AL) with context communication clonal raider (Ooceraea biroi).17Lopes L.E. Frank E.T. Kárpáti Z. Schmitt Kronauer D.J.C. 49: 1-10https://doi.org/10.1007/s10886-023-01407-4Crossref (1) Similar other insects,11Robinson older ants responded rapidly pheromones, chemical signals danger. Using whole-AL calcium imaging,18Hart D.D. Lopes Olivos-Cisneros Lacy K.D. Trible W. Ritger Valdés-Rodríguez Sparse stereotyped encoding implicates core glomerulus behavior.Cell. 186: 3079-3094.e17https://doi.org/10.1016/j.cell.2023.05.025Abstract then mapped representations five general odorants pheromones young old ants. were represented sparsely at all ages. However, responses within individual glomeruli changed age, either increasing or decreasing. Only became sensitized while same time becoming desensitized odorants. Our results suggest heightened occurs via increased glomeruli, illustrating importance modulation age-associated plasticity.

Language: Английский

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Antennal sensilla variability among castes and sexes in the leaf-cutter ant Acromyrmex subterraneus subterraneus

PROTOPLASMA, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 4, 2025

Language: Английский

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Ancestral complexity and constrained diversification of the ant olfactory system

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2025, Volume and Issue: 292(2045)

Published: April 1, 2025

Communication is a cornerstone of social living, allowing the exchange information to align goals and synchronize behaviour. Ants, group highly successful insects, have heightened olfactory abilities that are integral their evolutionary success. Essential for colony cohesion cooperation, female-specific subsystem processes about nestmate recognition cues (cuticular hydrocarbons), including basiconic sensilla on antenna cluster specific glomeruli in antennal lobe. While it has often been linked ants' lifestyle, origins phylogenetic distribution this system remain unknown. We conducted comparative exploration ant across eight major subfamilies, integrating neuroanatomical, chemical behavioural analyses. Our findings reveal sophistication deep roots. Moreover, lobe investment not associated with traits such as size, polygyny or foraging strategies, but correlates cuticular hydrocarbon profile complexity. Despite neuroanatomical differences, different species consistently excel discrimination, indicating adaptation diversity while maintaining reliable recognition. This suggests neuronal neuropil co-evolved sustain discrimination performance.

Language: Английский

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Evolution of the neuronal substrate for kin recognition in social Hymenoptera

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2023, Volume and Issue: 98(6), P. 2226 - 2242

Published: Aug. 1, 2023

In evolutionary terms, life is about reproduction. Yet, in some species, individuals forgo their own reproduction to support the reproductive efforts of others. Social insect colonies for example, can contain up a million workers that actively cooperate tasks such as foraging, brood care and nest defence, but do not produce offspring. societies division labour pronounced, restricted just one or few individuals, most notably queen(s). This extreme eusocial organisation exists only mammals, crustaceans insects, strikingly, it evolved independently nine times order Hymenoptera (including ants, bees wasps). Transitions from solitary lifestyle an organised society occur through natural selection when helpers obtain fitness benefit cooperating with kin, owing indirect transmission genes siblings. However, this process, called kin selection, vulnerable parasitism opportunistic behaviours unrelated individuals. An ability distinguish non-kin, respond accordingly, could therefore critically facilitate evolution eusociality maintenance non-reproductive workers. The question how hymenopteran brain has adapted function fundamental issue neuroethology. Early neuroanatomical investigations proposed social have expanded integrative areas due increased cognitive capabilities context processing information. Later studies challenged assumption instead pointed intimate link between higher existence developed sensory structures involved recognition communication. particular, chemical signalling identity, known be mediated cuticular hydrocarbons (CHCs), may hand specialised chemosensory system Hymenoptera. Here, we compile current knowledge on system, emitted identity signals, molecular neuronal basis detection, particular emphasis its history. Finally, ask whether behaviour driven expansion complex olfactory early origin conservation subsystem dedicated explain abundance species order. Answering will require further comparative provide comprehensive view lineage-specific adaptations pathway

Language: Английский

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Pheromone representation in the ant antennal lobe changes with age

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Feb. 14, 2024

Abstract While the neural basis of age-related decline has been extensively studied ( 1–3 ), less is known about changes in function during pre-senescent stages adulthood. Adult plasticity likely a key factor social insect age polyethism, where individuals perform different tasks as they and divide labor an age-dependent manner 4–9 ). Primarily, workers transition from nursing to foraging 5 , 10 become more aggressive, readily display alarm behavior 11–16 ) get older. it unknown how these behavioral dynamics are neurally regulated, could partially be generated by altered salience behaviorally relevant stimuli 4 6 7 Here, we investigated odor coding antennal lobe (AL) with context pheromone communication clonal raider ant Ooceraea biroi 17 Similar other insects 11 12 16 older ants responded rapidly pheromones, chemical signals for danger. Using whole-AL calcium imaging 18 then mapped representations five general odorants two pheromones young old ants. Alarm were represented sparsely at all ages. However, responses within individual glomeruli changed age, either increasing or decreasing. Only became sensitized while same time becoming desensitized odorants. Our results suggest that heightened response occurs via increased sensitivity core glomeruli, illustrating importance sensory modulation division age-associated plasticity.

Language: Английский

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Sensory evidence for complex communication and advanced sociality in early ants

Science Advances, Journal Year: 2024, Volume and Issue: 10(24)

Published: June 14, 2024

Advanced social behavior, or eusociality, has been evolutionarily profound, allowing colonies of ants, termites, wasps, and bees to dominate competitively over solitary species throughout the Cenozoic. sociality requires not just nestmate cooperation specialization but refined coordination communication. Here, we provide independent evidence that 100-million-year-old Cretaceous ants in amber were social, based on chemosensory adaptations. Previous studies inferred fossil ant from individual preserved adjacent others. We analyzed several for their antennal sensilla, using original rotation imaging microinclusions, found an array specifically alarm pheromone detection recognition, sharing distinctive features with extant ants. Although stem groups, fossilized sensilla confirm hypotheses complex sociality.

Language: Английский

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Reduced Cuticular Hydrocarbon Production in the Ant, Nylanderia fulva, Is Associated with Low Desiccation Resistance and Lack of Intraspecific Aggression in Its Invasive Range

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 25, 2024

Cuticular hydrocarbons (CHCs) are ubiquitous among insects where they form an outer wax layer that helps maintain water balance and prevent desiccation. In social insects, CHCs were subsequently co-opted as semiochemicals in many contexts, including nestmate recognition, which maintains boundaries competing colonies by ousting non-nestmates. some ant populations, workers do not discriminate against This leads to the development of supercolonies, a large network interconnected nests exchanging unrelated individuals. this study, we investigate CHC production their resistance desiccation Nylanderia fulva, exhibits supercolonial behavior within its invasive range USA. We found greatly reduced increased susceptibility toward compared other ants similar body size. relative absence sheds light on species abiotic stress through with implications for potential distribution supercolonies impairing recognition.

Language: Английский

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Cuticular hydrocarbons as host recognition cues in specialist and generalist endoparasitoids

Chemoecology, Journal Year: 2024, Volume and Issue: 34(4), P. 149 - 161

Published: July 29, 2024

Language: Английский

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