Research projects
Lab members

Sean O'Donnell , Ph.D.



Underlined, web-active titles are links to a PDF or HTML reprint . If no link is provided, email me to request a copy: so356 "at" drexel.edu


Papers organized by research topic:

 Division of labor, behavioral genetics and behavioral physiology - Brain plasticity & brain evolution - Biology of tropical ants - Thermal ecology and thermal physiology

Bird behavior and ecology - Human-safe insecticide discovery: Erythritol


Papers organized by research site or context:  

The Monteverde collection (Costa Rica) - Tiputini Biodiversity Station and Yasuni Park (Ecuador) - Work with OTS field courses (coordinator, resource faculty, and student)


All papers, listed chronologically:

Submitted manuscripts

O'Donnell, S., S. Bulova, S. Deleon, M. Barrett, & K. Fiocca. Revision in review. Distributed cognition in social brain evolution: brain structure differences between solitary and social wasps are independent of body size allometry. Journal of Comparative Physiology A.

O'Donnell, S. In review. Allometric implications of brain size in small-bodied wasps (Vespidae). Insectes Sociaux.

Soare T.W., A. Kumar, K.A. Naish & S. O'Donnell. In revision. Colony emigrations facilitate maternal gene flow in the army ant Eciton burchellii parvispinum. Insectes Sociaux.



Fiocca, K., M. Barrett, E. Waddell, C. McNair, S. O'Donnell, & D.R. Marenda. In rpress. Mannitol ingestion causes concentration-dependent, sex-biased mortality in adults of the fruit fly (Drosophila melanogaster). PloS ONE.

O'Donnell, S. In press. Observation of a Nocturnal Curassow with fledgling chicks in eastern Ecuador (Nothocrax urumutum Spix 1825) (Galliformes: Cracidae). Cotinga.

O'Donnell, S. In press. Brain evolution and plasticity. Encyclopedia of Social Insects (C.K. Starr. Ed.). Springer Press.

O'Donnell, S. In press. Mischocyttarus. Encyclopedia of Social Insects (C.K. Starr. Ed.). Springer Press.

Baudier, K., C. D'Amelio, E. Sulger, M.P. O'Connor, & S. O'Donnell. 2019. Plastic collective endothermy in a complex animal society (army ant bivouacs: Eciton burchellii parvispinum). Ecography 42: 730-739.



Baudier, K.M. & S. O'Donnell. 2018. Complex worker subcaste differences in thermal tolerances in the army ant Eciton burchellii parvispinum. Journal of Thermal Biology 77: 278-280.

Baudier K.M., C.L. D'Amelio, R. Malhotra, M.P. O'Connor & S. O'Donnell. 2018. Extreme insolation: climatic variation shapes the evolution of thermal tolerance at different scales. American Naturalist 192: 347-359.

Gilkey P., D. Bolshakov, J. Kowala, L. Taylor, S. O'Donnell, D. Marenda, & L. Sirot. 2018. Lethal effects of erythritol on the mosquito Aedes aegypti Linnaeus (Diptera: Culicidae). Journal of Applied Entomology 42: 873-881.

O'Donnell, S., S. Bulova, M. Barrett, & C. von Beeren. 2018. Worker-caste differences in brain investment reflect soldier behavioral specialization (Eciton army ants, Formicidae: Dorylinae). BMC Zoology 3:3 (open access).

O'Donnell, S., K. Fiocca, M. Campbell, S. Bulova, P. Zelanko, & D. Velinsky. 2018. Trophic ecology and reproductive physiology: a stable isotope analysis in a eusocial paper wasp (Mischocyttarus mastigophorus, Hymenoptera: Vespidae). Behavioral Ecology and Sociobiology 76: 86.

O'Donnell, S. 2018. The neurobiology of climate change. Science of Nature/Naturwissenschaften 105: 11.

O'Donnell, S., S.J. Bulova, M. Barrett, & K. Fiocca. 2018. Size constraints and sensory adaptations affect mosaic brain evolution (paper wasps- Vespidae: Epiponini). Biological Journal of the Linnaean Society 123: 302-310.

Nelson A.S., T.J. Scott, M. Barczyk, T. P. McGlynn, A. Avalos, E. Clifton, A. Das, A. Figueiredo, L. Figueroa, M. Janowiecki, S. Pahlke, J. Rana, & S.O'Donnell. 2018. Day/night thermal tolerances differ within Ectatomma ruidum ant colonies. Insectes Sociaux 65:183-189.

Driver R.W., S.D. DeLeon, & S. O'Donnell. 2018. Novel observation of a raptor (Micrastur semitorquatus) predating a fleeing snake (Squamata: Serpentina) at an army ant raid front (Eciton burchellii parvispinum). Wilson Journal of Ornithology 130: 792-796.

O'Connor M.P. & S. O'Donnell. 2018. Implications of iterative communication for biological system performance. Journal of Theoretical Biology 436: 93-104.



O'Donnell, S., S.J. Bulova, S. DeLeon, M. Barrett, & K. Fiocca. 2017. Caste-differences in the mushroom bodies of swarm-founding paperwasps: implications for brain plasticity and brain evolution (Vespidae, Epiponini). Behavioral Ecology and Sociobiology 71: 116.

O'Donnell S. & T. McGlynn. 2017. Emigrating on the fly: a novel method of army ant colony movement observed in Eciton mexicanum. Journal of Insect Behavior 30: 471-474.

O'Donnell, S. & S.J. Bulova. 2017. Development and evolution of brain allometry in wasps (Vespidae): Size, ecology and sociality. Current Opinion in Insect Science 22: 54-61.

Baudier, K.M. & S. O'Donnell. 2017. Weak links: How colonies counter the social costs of individual variation in thermal physiology. Current Opinion in Insect Science 22: 85-91.

O'Donnell, S., K.M. Baudier & D.R. Marenda. 2017. Erythritol ingestion impairs adult reproduction and causes larval mortality in Drosophila melanogaster fruit flies (Diptera: Drosophilidae). Journal of Applied Entomology 142: 36-42.

O'Donnell., S. 2017. Evidence for facilitation among avian army-ant attendants: specialization and species associations across elevations. Biotropica 49: 665-674.

Esch, C., J. Peña Jimenez, C. Peretz, H. Uno, & S. O'Donnell. 2017. Thermal tolerances differ between diurnal and nocturnal foragers in the ant Ectatomma ruidum. Insectes Sociaux 64: 439-444.

Lukasik, P., J.A. Newton, J.G. Sanders, Y. Hu, C.S. Moreau, D.J.C. Kronauer, S. O'Donnell, R. Koga, & J.A. Russell. 2017. The structured diversity of specialized gut symbionts of the New World army ants. Molecular Ecology 26: 3808-3825.



Baudier K.M. & S. O'Donnell. 2016. Structure and thermal biology of subterranean army ant bivouacs in a tropical montane forest. Insectes Sociaux 63: 467-476.

O'Donnell, S., K.M. Baudier & D.R. Marenda. 2016. Non-nutritive polyol sweeteners differ in insecticidal activity when ingested by adult Drosophila melanogaster (Diptera: Drosophilidae). Journal of Insect Science. 16: 47.

Bulova S., K. Purce, P. Khodak, E. Sulger & S. O'Donnell. 2016. Into the black, and back: The ecology of brain investment in Neotropical army ants (Formicidae: Dorylinae). Science of Nature/Naturwissenschaften 103: 1-11.



O'Donnell S., S.J. Bulova, S. DeLeon, P. Khodak, S. Miller, & E. Sulger. 2015. Distributed cognition and social brains: reductions in mushroom body investment accompanied the origins of sociality in wasps (Hymenoptera: Vespidae). Proceedings of the Royal Society B 282: 20150791.

Baudier K.M., A. E. Mudd, S.C. Erickson, & S. O'Donnell. 2015. Microhabitat and body size effects on heat tolerance: implications for responses to climate change (army ants: Formicidae, Ecitoninae). Journal of Animal Ecology 84: 1322-1330.

Arcilla N., L.H. Hollbech, & S. O'Donnell. 2015. Severe declines of understory birds follow illegal logging in Upper Guinea forests of Ghana, West Africa. Biological Conservation 188: 41-49.

McCann S., T. Jones, O. Moeri, C. Scott, S. O'Donnell & G. Gries. 2015. Red-throated Caracara, a falconid raptor, rivals predatory impact of army ants on social wasps. Insectes Sociaux 62: 101-108.

Rehan S.M, S.J. Bulova, & S. O'Donnell. 2015. Cumulative effects of foraging behavior and social dominance on brain development in a facultatively social bee (Ceratina australensis). Brain, Behavior and Evolution 85: 117-124.



O'Donnell S., A. Kumar & C.J. Logan. 2014. Do Nearctic migrant birds compete with residents at army ant raids? A geographical and seasonal analysis. Wilson Journal of Ornithology 126: 474-487.

Sulger E., N. Mcaloon, S.J. Bulova, J. Sapp & S. O'Donnell. 2014. Evidence for adaptive brain tissue reduction in obligate social parasites (Polyergus mexicanus) relative to their hosts (Formica fusca). Biological Journal of the Linnean Society 113: 415-422.

O'Donnell S., M.R. Clifford, S. Deleon, C. Papa, N. Zahedi & S.J. Bulova. 2014. A test of neuroecological predictions using paperwasp caste differences in brain structure (Hymenoptera: Vespidae). Behavioral Ecology & Sociobiology 68: 529-536.

Soare T.W., A. Kumar, K.A. Naish & S. O'Donnell. 2014. Genetic evidence for habitat effects on colony dispersal in the army ant Eciton burchellii. Molecular Ecology 23: 96-109.

Baudier K.M., S.D. Kaschock-Marenda, N. Patel, K.L. Diangelus, S. O'Donnell, & D.R. Marenda. 2014. Erythritol, a non-nutritive sugar alcohol sweetener and the main component of Truvia®, is a palatable ingested insecticide. PLOS ONE. DOI: 10.1371/journal.pone.0098949



O'Donnell, S., & J.H. Hunt. 2013. Group hunting by two species of Neotropical swarm-founding paper wasps (Parachartergus apicalis and Agelaia sp., Hymenoptera: Vespidae). Insectes Sociaux 60: 369-372.

O'Donnell S., M.R. Clifford, S. DeLeon, C. Papa, N. Zahedi & S.J. Bulova. 2013. Brain size and visual environment predict species differences in paperwasp sensory processing brain regions (Hymenoptera: Vespidae, Polistinae). Brain Behavior and Evolution 82: 177-184.

McCann S., O. Moeri, T. Jones, C. Scott, G. Khaskin, R. Gries, S. O'Donnell, & G. Gries. 2013. Strike fast, strike hard: the Red-throated Caracara exploits absconding behavior of social wasps during nest predation. PLOS ONE 8: e84114.



Laurance, W.F, D.C. Useche, J. Rendeiro, … S. O'Donnell, et al. 2012. Averting biodiversity collapse in tropical forest protected areas. Nature. doi:10.1038/nature11318. Published online 25 July 2012.

O'Donnell, S., C.J. Logan & N.S. Clayton. 2012. Specializations of birds that attend army ant raids: an ecological approach to cognitive and behavioral studies. Behavioural Processes 91: 267-274.

Chavarria Pizarro, L., H.F. McCreery, S.P. Lawson, M.E. Winston, & S. O'Donnell. 2012. Sodium-specific foraging by leafcutter ant workers (Atta cephalotes, Hymenoptera: Formicidae). Ecological Entomology 37: 435-438.



Logan, C., S. O'Donnell, & N. Clayton. 2011. A case of mental time travel in ant-following birds? Behavioral Ecology 22: 1149-1153.

O'Donnell, S., M.R. Clifford, & Y. Molina. 2011. A comparative analysis of constraints and caste differences in brain investment among social paper wasps. Proceedings of the National Academy of Sciences. 108: 7107-7112.

Kaspari, M., S. Powell, J. Lattke, & S. O'Donnell. 2011. Predation and patchiness in the tropical litter: do swarm-raiding army ants skim the cream or drain the bottle? Journal of Animal Ecology 80: 818-823.

Soare, T.W., S.I. Tully, S.K. Willson, D.J.C. Kronauer & S. O'Donnell. 2011. Choice of nest site protects army ant colonies from environmental extremes in tropical montane forest. Insectes Sociaux 58: 299-308.

O'Donnell, S., M. Kaspari, A. Kumar, J. Lattke & S. Powell. 2011. Elevational and geographic variation in army ant swarm raid rates. Insectes Sociaux 58: 293-298.

Kronauer, D.J.C., S. O'Donnell, J.J. Boomsma, & N.E. Pierce. 2011. Strict monandry in the ponerine army ant genus Simopelta suggests that colony size and complexity drive mating system evolution in social insects. Molecular Ecology 20: 420-428.



O'Donnell, S., M. Garcia, J. Beard, T. Chiwocha, D. Lewis, C. Liu, H. Phillips, & T. Williams. 2010. Leaf cutter ants (Atta cephalotes) harvest baits offering salt rewards. Insectes Sociaux 57: 205-208.

Lattke, J., S. O'Donnell, S. Powell, M. Kaspari. 2010. Las hormigas ecitoninas de Venezuela (Hymenoptera: Formicidae: Ecitoninae): elenco preliminar. Entomotropica, 22: 153-170.

McCann, S., O. Moeri, T. Jones, S. O'Donnell & G. Gries. 2010. Nesting and nest provisioning of the Red-throated Caracara (Ibycter americanus). Journal of Raptor Research 44: 236-240.

O'Donnell, S., A. Kumar & C. Logan. 2010. Army ant raid attendance and bivouac-checking behavior by Neotropical montane forest birds. Wilson Journal of Ornithology 122: 503-512.



Smith, A.R., K.M. Kapheim, S. O'Donnell & W.T. Wcislo. 2009. Social competition but not subfertility leads to a division of labour in the facultatively social sweat bee Megalopta genalis (Hymenoptera: Halictidae). Animal Behaviour 78: 1043-1050. Featured in the In Focus section of journal.

Molina, Y., Harris, R. & S. O'Donnell. 2009. Brain organization mirrors the evolution of caste determination, colony founding and nest architecture in paper wasps (Hymenoptera: Vespidae). Proceedings of the Royal Society B 276: 3345-3351.

Molina, Y. & S. O'Donnell. 2009. Males exhibit novel relationships of dominance with nest departure in the social paper wasp Mischocyttarus mastigophorus (Hymenoptera: Vespidae). Ethology 115: 738-746.

Jones, T.A., N.A. Donlan & S. O'Donnell. 2009. Growth and pruning of mushroom body Kenyon cell dendrites during worker behavioral development in the paper wasp, Polybia aequatorialis (Hymenoptera: Vespidae). Neurobiology of Learning and Memory 92: 485-495 and Journal cover.

O'Donnell, S., J. Lattke, S. Powell & M. Kaspari. 2009. Species and site differences in Neotropical army ant emigration behavior. Ecological Entomology 34: 476-482.

Kumar, A., J.T. Longino, R.K. Colwell & S. O'Donnell. 2009. Elevational patterns of diversity and abundance of eusocial paper wasps (Vespidae) in Costa Rica. Biotropica 41: 338-346.

Molina, Y. & S. O'Donnell. 2009. Worker reproductive competition affects division of labour in a primitively social paperwasp (Polistes instabilis). Insectes Sociaux 56: 14-20.

Kumar, A. & S. O'Donnell. 2009. Elevation and forest clearing effects on foraging differ between surface and subterranean army ants (Formicidae: Ecitoninae). Journal of Animal Ecology 78: 91-97.



Molina, Y. & S. O'Donnell. 2008. A developmental test of the dominance-nutrition hypothesis: Linking adult feeding, aggression, and reproductive potential in the paperwasp Mischocyttarus mastigophorus. Ethology, Ecology & Evolution 20: 125-139.

Smith, A.R., W.T. Wcislo, & S. O'Donnell. 2008. Body size shapes caste expression, and cleptoparasitism reduces body size in the facultatively eusocial bees Megalopta (Halictidae). Journal of Insect Behavior 21: 394-406.

Molina, Y. & S. O'Donnell. 2008. Age, sex, and dominance-related mushroom body plasticity in the paperwasp Mischocyttarus mastigophorus. Developmental Neurobiology 68: 950-959.



O'Donnell, S. & S.J. Bulova. 2007. Worker connectivity: a simulation model of variation in worker communication and its effects on task performance. Insectes Sociaux 54:203-210.

O'Donnell, S. & S.J. Bulova. 2007. Worker connectivity: a review of the design of worker communication systems and their effects on task performance in insect societies. Insectes Sociaux 54: 211-218.

Smith, A.R., W.T. Wcislo, & S. O'Donnell. 2007 (Published online). Survival and productivity benefits to social nesting in the sweat bee Megalopta genalis (Hymenoptera: Halictidae). Behavioral Ecology and Sociobiology.

Gardner, K.E., R.L. Foster, & S. O'Donnell. 2007. Experimental analysis of worker division of labor in bumblebee nest thermoregulation (Bombus huntii, Hymenoptera: Apidae). Behavioral Ecology and Sociobiology 61: 783-792.

O'Donnell, S., J. Lattke, S. Powell, & M. Kaspari. 2007. Army ants in four forests: Geographic variation in raid rates and species abundance. Journal of Animal Ecology 76: 580-586.

Molina, Y. & S. O'Donnell. 2007. Mushroom body volume is related to social aggression and ovary development in the paperwasp Polistes instabilis. Brain Behavior and Evolution 70: 137-144.

O'Donnell, S., N.A. Donlan, & T.A. Jones. 2007. Developmental and dominance-associated differences in mushroom body structure in the paper wasp Mischocyttarus mastigophorus. Journal of Neurobiology 67: 39-46 (continued as Developmental Neurobiology).

Kumar, A. & S. O'Donnell. 2007. Fragmentation and elevation effects on bird-army ant interactions in Neotropical montane forest in Costa Rica. Journal of Tropical Ecology 23: 581-590.



O'Donnell, S. 2006. Polybia wasp biting interactions recruit foragers following experimental worker removals. Animal Behaviour 71: 709-715.

O'Donnell, S. & A. Kumar. 2006. Microclimatic factors associated with elevational changes in army ant density in tropical montane forest. Ecological Entomology 31: 491-498.



O'Donnell, S., M. Kaspari, and J. Lattke. 2005. Extraordinary Predation by the Neotropical Army Ant Cheliomyrmex andicola: Implications for the Evolution of the Army Ant Syndrome. Biotropica 37: 706-709.



Foster, R.L., A. Brunskill, D. Verdirame, & S. O'Donnell. 2004. Reproductive physiology, dominance interactions, and division of labour among bumble bee workers. Physiological Entomology 29: 327-334.

O'Donnell, S. & S.N. Beshers. 2004. The role of male disease susceptibility in the evolution of haplodiploid insect societies. Proceedings of the Royal Society of London B 271: 979-983.

O'Donnell, S., N.A. Donlan, & T.A. Jones. 2004. Mushroom body structural plasticity is associated with temporal polyethism in eusocial wasp workers. Neuroscience Letters 356: 159-162.



O'Donnell, S. 2003. The development of biting interactions and task performance in a tropical eusocial wasp. Behaviour 140: 255-267.

Smith, A.R., W.T. Wcislo, & S. O'Donnell. 2003. Assured fitness returns favor sociality in a mass-provisioning sweat bee, Megalopta genalis (Hymenoptera: Halictidae). Behavioral Ecology and Sociobiology.

Kaspari, M. & S. O’Donnell. 2003. High rates of army ant raids in the Neotropics and implications for ant colony and community structure. Evolutionary Ecology Research 5:933-939.



Howard, K.J., A.R. Smith, S. O'Donnell & R.L. Jeanne. 2002. Novel method of swarm emigration by the epiponine wasp, Apoica pallens (Hymenoptera: Vespidae). Ethology, Ecology and Evolution 14: 365-371.

Smith, A.R., S. O'Donnell, & R.L. Jeanne. 2002. Evolution of swarm communication in eusocial wasps (Hymenoptera: Vespidae). Journal of Insect Behavior 15: 751-764.

O'Donnell, S. 2002. Caste. In: V. Resh and R.T. Cardé (eds) Encyclopedia of Insects. Academic Press. pp. 151-154. (Proof)

O'Donnell, S. 2002. Colonies. In: V. Resh and R.T. Cardé (eds) Encyclopedia of Insects. Academic Press. pp. 239-242. (Proof)

O'Donnell, S. and R.L. Jeanne. 2002. The nest as fortress: defensive behavior of Polybia emaciata, a mud-nesting eusocial wasp. 5 pp. Journal of Insect Science, 2.3. Available online: http://insectscience.org/2.3



Markiewicz, D.A. & S. O'Donnell. 2001. Social dominance, task performance and nutrition: implications for reproduction in eusocial wasps. Journal of Comparative Physiology A 187: 327-333.

O'Donnell, S. 2001. Worker age, ovary development, and temporal polyethism in the swarm-founding wasp Polybia occidentalis (Hymenoptera: Vespidae). Journal of Insect Behavior 14: 201-213.

Hunt, J.H., S. O'Donnell, N. Chernoff, & C. Brownie. 2001. Observations on two Neotropical Swarm-founding Wasps, Agelaia yepocapa and A. panamaensis (Hymenoptera: Vespidae). Annals of the Entomological Society of America 98: 555-562.

O'Donnell, S. & R.L. Foster. 2001. Thresholds of response in nest thermoregulation by worker bumble bees, Bombus bifarius nearcticus (Hymenoptera: Apidae). Ethology 107: 387-399.

O'Donnell, S. 2001. Worker biting interactions and task performance in a swarm-founding eusocial wasp (Polybia occidentalis, Hymenoptera: Vespidae). Behavioral Ecology12: 353-359.

Smith, A.R., S. O'Donnell, & R.L. Jeanne. 2001. Correlated evolution of colony defense and social structure: a comparative analysis in eusocial wasps (Hymenoptera: Vespidae). Evolutionary Ecology Research 3: 331-344.

O'Donnell, S. & F.J. Joyce. 2001. Seasonality and colony composition in the tropical eusocial wasp Mischocyttarus mastigophorus Richards (Hymenoptera: Vespidae). Biotropica. 33: 468-473.



O'Donnell, S., M. Reichardt, & R.L. Foster. 2000. Individual and colony factors in bumble bee division of labor (Bombus bifarius nearcticus Handl, Hymenoptera: Apidae). Insectes Sociaux 47: 164-170.

Kaspari, M., L. Alonso, & S. O'Donnell. 2000. Three energy variables predict ant abundance at a geographical scale. Proceedings of the Royal Society of London B 267: 485-489.

O'Donnell, S. 2000. Eusocial wasps (Vespidae: Polistinae). In: N.M. Nadkarni and N.T. Wheelright (eds) Monteverde: Ecology and Conservation of a Tropical Cloud Forest. pp. 129-131 and p. 535. Oxford University Press.

Kaspari, M., S. O'Donnell & J.R. Kercher. 2000. Energy, density, and constraints to species richness: ant assemblages along a productivity gradient. The American Naturalist 155: 280-293.

O'Donnell, S. & F. Joyce. 2000. A dual mimicry complex involving eusocial wasps (Hymenoptera: Vespidae). In: N.M. Nadkarni and N.T. Wheelright (eds) Monteverde: Ecology and Conservation of a Tropical Cloud Forest. pp. 131-132. Oxford University Press.



O'Donnell, S. & F.J. Joyce. 1999. Dual mimicry in the dimorphic eusocial wasp, Mischocyttarus mastigophorus Richards. Biological Journal of the Linnean Society 66:501-514.

Ranger, S. & S. O'Donnell. 1999. Genotypic effects on forager behavior in the Neotropical stingless bee Partamona bilineata (Hymenoptera: Meliponidae). Naturwissenschaften 86: 187-190.

O'Donnell, S. 1999. The function of male dominance in the eusocial wasp Mischocyttarus mastigophorus (Hymenoptera: Vespidae). Ethology 105: 273-282.



O'Donnell, S. 1998. Dominance and polyethism in the eusocial wasp Mischocyttarus mastigophorus (Hymenoptera: Vespidae). Behavioral Ecology and Sociobiology 43: 327-331.

O'Donnell, S. 1998. Effects of experimental forager removals on division of labour in the primitively eusocial wasp Polistes instabilis (Hymenoptera: Vespidae). Behaviour 135: 173-193.

O'Donnell, S. 1998. Genetic effects on task performance, but not on age polyethism, in a swarm-founding eusocial wasp. Animal Behaviour 55: 417-426.

O'Donnell, S. 1998. Reproductive caste determination in eusocial wasps (Hymenoptera: Vespidae). Annual Review of Entomology 43: 323-346.



O'Donnell, S., J.H. Hunt, & R.L. Jeanne.1997. Gaster-flagging during colony defense in Neotropical swarm-founding wasps (Hymenoptera: Vespidae, Epiponini). Journal of the Kansas Entomological Society 70:175-180.

O'Donnell, S. 1997. How parasites can promote the expression of social behaviour in their hosts. Proceedings of the Royal Society of London B 264: 689-694.



O'Donnell, S. 1996. Reproductive potential and division of labor in wasps: are queen and worker behavior alternative strategies? Ethology Ecology and Evolution 8: 305-308.

O'Donnell, S. 1996. RAPD markers suggest genotypic effects on forager specialization in a eusocial wasp. Behavioral Ecology and Sociobiology 38: 83-88.

O'Donnell, S. 1996. Dragonflies (Gynacantha nervosa Rambur) avoid wasps (Polybia aequatorialis Zavattari and Mischocyttarus sp.) as prey. Journal of Insect Behavior 9: 159-162.



O'Donnell, S. & R.L. Jeanne. 1995. Worker lipid stores decrease with outside-nest task performance in wasps: implications for the evolution of age polyethism. Experientia 51: 749-752.

O'Donnell, S. & R.L. Jeanne. 1995. Implications of senescence patterns for the evolution of age polyethism in eusocial insects. Behavioral Ecology 6: 269-273.

O'Donnell, S. 1995. Division of labor in post-emergence colonies of the primitively eusocial wasp Polistes instabilis de Saussure (Hymenoptera: Vespidae). Insectes Sociaux 42: 17-29.

O'Donnell, S. & R.L. Jeanne. 1995. The roles of body size and dominance in division of labor among workers of the eusocial wasp Polybia occidentalis. Journal of the Kansas Entomological Society 68: 43-50.

O'Donnell, S. 1995. Necrophagy by neotropical swarm-founding wasps (Hymenoptera: Vespidae, Epiponini). Biotropica 27: 133-136.



O'Donnell, S. 1994. Nestmate copulation in the Neotropical eusocial wasp Polistes instabilis de Saussure (Hymenoptera: Vespidae). Psyche 101: 33-36.



O'Donnell, S. & R.L. Jeanne. 1993. Methoprene accelerates age polyethism in workers of a social wasp (Polybia occidentalis). Physiological Entomology 18: 189-194.

O'Donnell, S. 1993. Interactions of predaceous katydids (Orthoptera: Tettigoniidae) with Neotropical social wasps (Hymenoptera: Vespidae): are wasps a defense mechanism or prey? Entomological News 104: 39-42.



O'Donnell, S. & R.L. Jeanne. 1992. Life-long patterns of forager behaviour in a tropical swarm-founding wasp: effects of specialization and activity level on longevity. Animal Behaviour 44: 1021-1027.

O'Donnell, S. & R.L. Jeanne. 1992. Forager success increases with experience in Polybia occidentalis (Hymenoptera: Vespidae). Insectes Sociaux 39: 451-454.

O'Donnell, S. & R.L. Jeanne. 1992. The effects of colony characteristics on longevity and foraging behavior of individual wasps (Polybia occidentalis, Hymenoptera: Vespidae, Epiponini). Insectes Sociaux 39: 73-80.



O'Donnell, S. & R.L. Jeanne. 1991. Interspecific occupation of a tropical social wasp colony (Polistes, Hymenoptera: Vespidae). Journal of Insect Behavior 4: 397-400.



O'Donnell, S. & R.L. Jeanne. 1990. Forager specialization and the control of nest repair in Polybia occidentalis Olivier (Hymenoptera: Vespidae). Behavioral Ecology and Sociobiology 27: 359-364.

O'Donnell, S. & R.L. Jeanne. 1990. Notes on an army ant (Eciton burchelli Westwood) raid of a social wasp nest (Agelaia yepocapa Richards) in Costa Rica. Journal of Tropical Ecology 6: 507-509.



O'Donnell, S. 1989. A comparison of fruit removal by bats and birds from Piper hispidum Sw (Piperaceae), a tropical second growth shrub. Brenesia 31: 25-32.