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                    U.S. DEPARTMENT OF AGRICULTURE
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- Carissa Wonkka
- Former PMRU Scientists

Robert B Srygley
                     

                     Research Ecologist

                     


                        **Publications**
                                    (Clicking on the reprint icon
                                       Reprint Icon
                                       will take you to the publication reprint.)Prolonged Diapause in Mormon Crickets: Embryonic Responses to Three Measures of Time

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(Peer Reviewed Journal)Srygley, R.B. 2024. Prolonged Diapause in Mormon Crickets: Embryonic Responses to Three Measures of Time. Journal of Insect Physiology. 155:1-7. https://doi.org/10.1016/j.jinsphys.2024.104634.Pervasive convergence in flight patterns enhances mimicry in aposematic butterflies

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(Peer Reviewed Journal)Queste, L.M., Page, E., Rosser, N., Mallet, J.K., Srygley, R.B., Mcmillan, W., Dasmahapatra, K.K. 2024. Pervasive convergence in flight patterns enhances mimicry in aposematic butterflies. Proceedings of the National Academy of Sciences (PNAS). Vol 121 No 11. https://doi.org/10.1073/pnas.2300886121.Illustrated review of Mormon cricket (Anabrus simplex) embryonic development

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(Peer Reviewed Journal)Srygley, R.B., Senior, L.B. 2024. Illustrated review of Mormon cricket (Anabrus simplex) embryonic development. Journal of Orthoptera Research. https://doi.org/10.3897/jor.33.98763.Power bars: Mormon crickets get immunity boost from eating grasshoppers

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(Peer Reviewed Journal)Srygley, R.B., Branson, D.H. 2023. Power bars: Mormon crickets get immunity boost from eating grasshoppers. Insects. 14(11):868. https://doi.org/10.3390/insects14110868.Selective protein self-deprivation by Mormon crickets following fungal attack

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(Peer Reviewed Journal)Srygley, R.B. 2023. Selective protein self-deprivation by Mormon crickets following fungal attack. Journal of Insect Physiology. 149. Article 104555. https://doi.org/10.1016/j.jinsphys.2023.104555.El Niño oscillations impact anti-predator defenses to alter survival of an herbivorous beetle in a neotropical wet forest

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(Peer Reviewed Journal)Vencl, F.V., Srygley, R.B. 2023. El Niño oscillations impact anti-predator defenses to alter survival of an herbivorous beetle in a neotropical wet forest. Journal of Tropical Ecology. 39(e34)1-11. https://doi.org/10.1017/S0266467423000226.Microclimate refugia: Comparing modeled to empirical near-surface temperatures on rangeland

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(Peer Reviewed Journal)Srygley, R.B., Dixon, J.I., Lorch, P.D. 2023. Microclimate refugia: Comparing modeled to empirical near-surface temperatures on rangeland. Geographies. 3:344-358. https://doi.org/10.3390/geographies3020018.Quantifying the aerodynamic power required for flight and testing for adaptive wind drift in passion-vine butterflies Heliconius sara (Lepidoptera: Nymphalidae)

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(Peer Reviewed Journal)Srygley, R.B., Dudley, R., Hernandez, E.J., Kainz, F., Riveros, A.J., Ellington, C.P. 2023. Quantifying the aerodynamic power required for flight and testing for adaptive wind drift in passion-vine butterflies Heliconius sara (Lepidoptera: Nymphalidae). Insects. 14(2). Article 112. https://doi.org/10.3390/insects14020112.Temperature effects Mormon cricket Anabrus simplex embryo development, hatching and nymphal growth: Thermal performance curves change with ontogeny

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(Peer Reviewed Journal)Srygley, R.B. 2022. Temperature effects Mormon cricket Anabrus simplex embryo development, hatching and nymphal growth: Thermal performance curves change with ontogeny. Journal of Thermal Biology. 110. Article 103356. https://doi.org/10.1016/j.jtherbio.2022.103356.Grasshoppers exhibit asynchrony and spatial non-stationarity in response to the El Niño/Southern and Pacific Decadal Oscillations

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(Peer Reviewed Journal)Humphreys Jr., J.M., Srygley, R.B., Lawton, D., Hudson, A.R., Branson, D.H. 2022. Grasshoppers exhibit asynchrony and spatial non-stationarity in response to the El Niño/Southern and Pacific Decadal Oscillations. Ecological Modeling. 471. Article 110043. https://doi.org/10.1016/j.ecolmodel.2022.110043.Grasshoppers and other orthopteran pests

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()Srygley, R.B. 2023. Grasshoppers and other orthopteran pests. In: Eigenbrode, S., Rashad, A., editors. Advances in Understanding Insect Pests Affecting Wheat and Other Cereals. Oxford: Burleigh Dodds Science Publishing. p 33-56.Geographic variation in migratory grasshopper recruitment under projected climate change

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(Peer Reviewed Journal)Humphreys Jr., J.M., Srygley, R.B., Branson, D.H. 2022. Geographic variation in migratory grasshopper recruitment under projected climate change. Geographies. 2(1):12-30. https://doi.org/10.3390/geographies2010003.Increasing temperature reduces cuticular melanism and immunity to fungal infection in a migratory insect

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(Peer Reviewed Journal)Srygley, R.B., Jaronski, S.T. 2022. Increasing temperature reduces cuticular melanism and immunity to fungal infection in a migratory insect. Ecological Entomology. 47(1):109-113. https://doi.org/10.1111/een.13088.Predation landscapes influence migratory prey ecology and evolution

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(Peer Reviewed Journal)Sabal, M.C., Boyce, M.S., Charpentier, C.L., Furey, N.B., Luhring, T.M., Martin, H.W., Melnychuk, M.C., Srygley, R.B., Wagner, C., Wirsing, A.J., Ydenberg, R.C., Palkovacs, E.P. 2021. Predation landscapes influence migratory prey ecology and evolution. Trends in Ecology and Evolution. 36(8):737-749. https://doi.org/10.1016/j.tree.2021.04.010.Elevational and latitudinal changes in cold tolerance of nymph and adult Mormon crickets Anabrus simplex (Orthoptera: Tettigoniidae)

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(Peer Reviewed Journal)Srygley, R.B. 2021. Elevational and latitudinal changes in cold tolerance of nymph and adult Mormon crickets Anabrus simplex (Orthoptera: Tettigoniidae). Environmental Entomology. 50(3):699-705. https://doi.org/10.1093/ee/nvab009.Elevational changes in Mormon cricket life histories: Minimum temperature for nymphal growth declines with elevation

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(Peer Reviewed Journal)Srygley, R.B. 2020. Elevational changes in Mormon cricket life histories: Minimum temperature for nymphal growth declines with elevation. Environmental Entomology. 50(1):167-172. https://doi.org/10.1093/ee/nvaa151.Magnetic material in migratory and non-migratory Neotropical Lepidoptera: A magnetic resonance study

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(Peer Reviewed Journal)Cambraia Alves, O., Wajnberg, E., Esquivel, D.M., Srygley, R.B. 2020. Magnetic material in migratory and non-migratory Neotropical Lepidoptera: A magnetic resonance study. Journal of Magnetism and Magnetic Materials. 513:1-11. https://doi.org/10.1016/j.jmmm.2020.167053.Parental photoperiod affects egg diapause in a montane population of Mormon crickets Anabrus simplex (Orthoptera: Tettigoniidae)

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(Peer Reviewed Journal)Srygley, R.B. 2020. Parental photoperiod affects egg diapause in a montane population of Mormon crickets Anabrus simplex (Orthoptera: Tettigoniidae). Environmental Entomology. 49(4):895-901. https://doi.org/10.1093/ee/nvaa062.Tri-trophic interactions are resilient to large shifts in precipitation levels in a wheat agroecosystem

                                          
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(Peer Reviewed Journal)Rand, T.A., Waters, D.K., Srygley, R.B., Branson, D.H. 2020. Tri-trophic interactions are resilient to large shifts in precipitation levels in a wheat agroecosystem. Agriculture, Ecosystems and Environment. 301:1-10. https://doi.org/10.1016/j.agee.2020.106981.Song of anabrus cerciata male

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()Srygley, R.B., Senior, L., Westwick, R.R. 2020. Singing insects of North America (SINA): Big-tooth anabrus (Anabrus cerciata). [World Wide Web] The Orthopterists’ Society: Pensoft Publishing. Available: https://sina.orthsoc.org/267a.htm.Coping with drought: Diapause plasticity in katydid eggs at high, mid, and low elevations

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(Peer Reviewed Journal)Srygley, R.B. 2020. Coping with drought: Diapause plasticity in katydid eggs at high, mid, and low elevations. Ecological Entomology. 45(3):485-492. https://doi.org/10.1111/een.12820.Mormon cricket, Anabrus simplex Haldeman, 1852 (Tettigoniidae)

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()Srygley R., Jaronski, S., 2019. Mormon cricket, Anabrus simplex Haldeman, 1852 (Tettigoniidae). In: Lecoq M., Zhang L., editors. Encyclopedia of Pest Orthoptera of the World. Beijing: China Agricultural University Press. p. 219-223.Magnetic compasses in insects

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()Riveros, A.J., Srygley, R.B. 2019. Magnetic compasses in insects. In: Choe, J.C., editor. Encyclopedia of Animal Behavior. 2nd edition. Elsevier/Academic Press. p. 588–597. https://doi.org/10.1016/B978-0-12-809633-8.01251-6.Experimental manipulation of dispersal ability in Neotropical butterfly Anartia fatima (Lepidoptera: Nymphalidae)

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(Peer Reviewed Journal)Srygley, R.B. 2018. Experimental manipulation of dispersal ability in Neotropical butterfly Anartia fatima (Lepidoptera: Nymphalidae). Insects. https://doi.org/10.3390/insects9030107.The laboratory curse: variation in temperature stimulates embryonic development and shortens diapause

                                          
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(Peer Reviewed Journal)Srygley, R.B., Senior, L. 2018. The laboratory curse: variation in temperature stimulates embryonic development and shortens diapause. Environmental Entomology. 47(3):725-733. https://doi.org/10.1093/ee/nvy024.Protein deficiency lowers resistance of Mormon crickets to the pathogenic fungus Beauveria bassiana

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(Peer Reviewed Journal)Srygley, R.B., Jaronski, S. 2018. Protein deficiency lowers resistance of Mormon crickets to the pathogenic fungus Beauveria bassiana. Journal of Insect Physiology. 105:40-45. doi:10.1016/j.jinsphys.2018.01.00.Spatial structure of the Mormon cricket gut microbiome and its predicted contribution to nutrition and immune function

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(Peer Reviewed Journal)Smith, C.D., Srygley, R.B., Healy, F., Swaminath, K., Mueller, U.G. 2017. Spatial structure of the Mormon cricket gut microbiome and its predicted contribution to nutrition and immune function. Frontiers in Microbiology. 8:801. doi:10.3389/fmicb.2017.00801.Structure, and culture of the gut microbiome of the Mormon cricket Anabrus simplex

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()Smith, C.C., Srygley, R.B., Healy, F., Swaminath, K., Mueller, U.G. 2017. Structure, and culture of the gut microbiome of the Mormon cricket Anabrus simplex. bioRxiv. doi: https://doi.org/10.1101/080846.Partitioning the effects of mating and nuptial feeding on the microbiome in gift-giving insects

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(Peer Reviewed Journal)Smith, C.C., Srygley, R.B., Dietrich, E.I., Mueller, U.G. 2017. Partitioning the effects of mating and nuptial feeding on the microbiome in gift-giving insects. Environmental Microbiology Reports. 9(2):104-112. doi:10.1111/1758-2229.12506.Magnetic compasses in insects

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()Srygley, R.B., Riveros, A.J. 2016. Magnetic compasses in insects. In: Fraser, P., editor. Reference Module in Life Sciences. Amsterdam: Elsevier. p. 1-9. doi:10.1016/B978-0-12-809633-8.01251-6.Physiological aeroecology: Anatomical and physiological adaptations for flight

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()Jenni-Eiermann, S., Srygley, R.B. 2017. Physiological aeroecology: Anatomical and physiological adaptations for flight. In: Chilson, P., Frick, W.F., Kelly, J., Liechti, F., editors. Aeroecology. Switzerland: Springer Verlag. p. 87-118.Mormon crickets maximize nutrient intake at the expense of immunity

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(Peer Reviewed Journal)Srygley, R.B. 2016. Mormon crickets maximize nutrient intake at the expense of immunity. Physiological Entomology. 42(1):1-9. doi:10.1111/phen.12155.Diet drives the collective migrations and affects the immunity of Mormon crickets and locusts: A comparison of these potential superspreaders of disease

                                          
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(Peer Reviewed Journal)Srygley, R.B. 2016. Diet drives the collective migrations and affects the immunity of Mormon crickets and locusts: A comparison of these potential superspreaders of disease. Integrative & Comparative Biology. 56(2):268-277. doi:10.1093/icb/icw035.Loss of safety in numbers and a novel driver of mass migration: Radiotelemetry reveals heavy predation on a band of Mormon crickets

                                          
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(Peer Reviewed Journal)Srygley, R.B., Lorch, P.D. 2016. Loss of safety in numbers and a novel driver of mass migration: radiotelemetry reveals heavy predation on a band of Mormon crickets. Royal Society Open Science. 3(5):160113. doi:10.1098/rsos.160113.The butterflies of Barro Colorado Island: Local extinction rates since the 1930's

                                          
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(Peer Reviewed Journal)Basset, Y., Barrios, H., Segar, S., Srygley, R.B., Aiello, A., Warren, A.D., Delgado, F., Coronado, J., Lezcano, J., Arizala, S., Rivera, M., Perez, F., Bobadilla, R., Lopez, Y., Ramirez, J.A. 2015. The butterflies of Barro Colorado Island: Local extinction rates since the 1930's. PLoS One. 10(8):e0136623. doi:10.1371/journal.pone.0136623.Magnetic anisotropy and organization of nanoparticles in heads and antennae of neotropical leaf-cutter ants, Atta colombica

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(Peer Reviewed Journal)Alves, O.C., Srygley, R.B., Riveros, A.J., Barbosa, M.A., Esquivel, D.M., Wajnberg, E. 2014. Magnetic anisotropy and organization of nanoparticles in heads and antennae of neotropical leaf-cutter ants, Atta colombica. Journal of Physics D. 47(43):435401. DOI: 10.1088/0022-3727/47/43/435401.Effects of temperature and moisture on Mormon cricket reproduction with implications for responses to climate change

                                          
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(Peer Reviewed Journal)Srygley, R.B. 2014. Effects of temperature and moisture on Mormon cricket reproduction with implications for responses to climate change. Journal of Insect Physiology. 65:57-62. DOI: 10.1016/j.jinsphys.2014.05.005.Do leaf-cutter ants Atta colombica obtain their magnetic sensors from soil?

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(Peer Reviewed Journal)Riveros, A.J., Esquivel, D.M., Wajnberg, E., Srygley, R.B. 2014. Do leaf-cutter ants Atta colombica obtain their magnetic sensors from soil? Behavioral Ecology and Sociobiology. 68(1):55-62.El Niño, host plant growth, and migratory butterfly abundance in a changing climate

                                          
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(Peer Reviewed Journal)Srygley, R.B., Dudley, R., Oliveira, E.G., Riveros, A.J. 2014. El Niño, host plant growth, and migratory butterfly abundance in a changing climate. Biotropica. 46(1):90-97.Proximate effects of maternal oviposition preferences on defense efficacy and larval survival in a diet-specialized tortoise beetle. Who knows best: mothers or their progeny?

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(Peer Reviewed Journal)Vencl, F.V., Plata, C.A., Srygley, R.B. 2013. Proximate effects of maternal oviposition preferences on defense efficacy and larval survival in a diet-specialized tortoise beetle. Who knows best: mothers or their progeny? Ecological Entomology. 38(6):596-607.Coping with uncertainty: Nutrient deficiencies motivate insect migration at a cost to immunity

                                          
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(Peer Reviewed Journal)Srygley, R.B., Lorch, P.D. 2013. Coping with uncertainty: Nutrient deficiencies motivate insect migration at a cost to immunity. Integrative & Comparative Biology. 53(6):1002-1013.Climate Change and Agriculture: Effects and Adaptation

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()Walthall, C.L., Hatfield, J.L., Marshall, E., Lengnick, L., Backlund, P., Adkins, S.T., Ainsworth, E.A., Booker, F.L., Blumenthal, D.M., Bunce, J.A., Burkey, K.O., Dabney, S.M., Goodrich, D.C., Lewers, K.S., Nearing, M.A., Ort, D.R., Pettigrew, W.T., Polley, H.W., Rosskopf, E.N., Srygley, R.B., Ziska, L.H., Delgado, J.A., Funk, A.J., Glenn, D.M., Morgan, J.A., White, J.W., Timlin, D.J., Mcclung, A.M. 2013. Climate Change and Agriculture: Effects and Adaption. Washington, DC: USDA Technical Bulletin 1935. 186 p.Enemy targeting, trade-offs, and the evolutionary assembly of a tortoise beetle defense arsenal

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(Peer Reviewed Journal)Vencl, F.V., Srygley, R.B. 2013. Enemy targeting, trade-offs, and the evolutionary assembly of a tortoise beetle defense arsenal. Evolutionary Ecology. 27(2): 237-252. Available: DOI 10.1007/s10682-012-9603-1.Ontogenetic changes in immunity and susceptibility to fungal infection in Mormon crickets Anabrus simplex

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(Peer Reviewed Journal)Srygley, R.B. 2012. Ontogenetic changes in immunity and susceptibility to fungal infection in Mormon crickets Anabrus simplex. Journal of Insect Physiology. 58: 342-347.Age- and density-dependent prophylaxis in the migratory Mormon cricket Anabrus simplex (Orthoptera: Tettigoniidae)

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(Peer Reviewed Journal)Srygley, R.B. 2012. Age- and density-dependent prophylaxis in the migratory Mormon cricket Anabrus simplex (Orthoptera: Tettigoniidae). Environmental Entomology. 41(1): 166-171.Urban and natural components of Korean magpie (Pica pica sericea) territories and their effects on prey density

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(Peer Reviewed Journal)Kim, S., Srygley, R.B., Lee, J.Y., Lee, S.I., Choe, J.C. 2012. Urban and natural components of Korean magpie (Pica pica sericea) territories and their effects on prey density. Polish Journal of Ecology. 60: 407-417.Weakness in the band: nutrient-mediated trade-offs between migration and immunity of Mormon crickets, Anabrus simplex

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(Peer Reviewed Journal)Srygley, R.B., Lorch, P.D. 2011. Weakness in the band: nutrient-mediated trade-offs between migration and immunity of Mormon crickets, Anabrus simplex. Animal Behaviour. 81(2): 395-400.Immune Response of Mormon Crickets that Survived Infection by Beauveria Bassiana

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(Peer Reviewed Journal)Srygley, R.B., Jaronski, S. 2010. Immune Response of Mormon Crickets that Survived Infection by Beauveria Bassiana. Psyche. Vol. 2011, 5 pp., Article ID 849038, DOI:10.1155/2011/849038.Antennal Regulation of Migratory Flight in the Neotropical Moth, Urania fulgens

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(Peer Reviewed Journal)Sane, S., Srygley, R.B., Dudley, R. 2010. Antennal Regulation of Migratory Flight in the Neotropical Moth, Urania fulgens. Biology Letters. 6:406-409.Magnetoreception in Eusocial Insects: An Update

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(Peer Reviewed Journal)Wajnberg, E., Acosta-Avalos, D., Cambraia Alves, O., Oliveira, J., Srygley, R.B., Esquivel, D.M. 2010. Magnetoreception in Eusocial Insects: An Update. Journal Royal Society Interface. 7(2): S207-S225.Migration, Orientation and Navigation: Magnetic Compasses in Insects

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()Riveros, A.J., Srygley, R.B. 2010. Migration, Orientation and Navigation: Magnetic Compasses in Insects. In: Breed, M.D., and Moore, J., editors. Encyclopedia of Animal Behavior. Vol. 2. Oxford: Elsevier / Academic Press. pp. 305-313.Immune Response of Mormon Crickets to Infection by Beauveria bassiana.

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(Abstract Only)Immediate Protein Dietary Effects on Movement and the Generalised Immunocompetence of Migrating Mormon Crickets Anabrus simplex (Orthoptera: Tettigoniidae)

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(Peer Reviewed Journal)Srygley, R.B., Lorch, P.D., Simpson, S.J., Sword, G.A. 2009. Immediate Protein Dietary Effects on Movement and the Generalised Immunocompetence of Migrating Mormon Crickets Anabrus simplex (Orthoptera: Tettigoniidae). Ecological Entomology. 34(5):663–668.El Niño and Dry Season Rainfall Influence Hostplant Phenology and an Annual Butterfly Migration from Neotropical Wet to Dry Forests

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(Peer Reviewed Journal)Srygley, R.B., Dudley, R., Oliveira, E.G., Aizprua, R., Pelaez, N.Z., Riveros, A.J. 2010. El Niño and Dry Season Rainfall Influence Hostplant Phenology and an Annual Butterfly Migration from Neotropical Wet to Dry Forests. Global Change Biology. 16:936-945.Weakness in the band: Nutrient imbalance and immunodeficiency in mass-migrating cannibalistic katydids

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(Abstract Only)Age of the Jeju pony (Equus caballus) at first reproduction: potential costs for foals and mothers that first reproduce early in life

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(Peer Reviewed Journal)Rho, J.R., Srygley, R.B., Choe, J.C. 2009. Age of the Jeju pony (Equus caballus) at first reproduction: potential costs for foals and mothers that first reproduce early in life. Journal of Ethology. Journal of Ethology. 27(3):483-488.Immediate dietary effects on migrating Mormon cricket immunocompetence

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(Abstract Only)Optimal strategies for insects migrating in the flight boundary layer: Mechanisms and consequences

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(Peer Reviewed Journal)Srygley, R.B., Dudley, R. 2008. Optimal strategies for insects migrating in the flight boundary layer: Mechanisms and consequences. Integrative & Comparative Biology. 48:119-133.Aeroecology: Probing and Modeling the Aerosphere

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(Peer Reviewed Journal)Kunz, T.H., Gauthreaux, Jr., S.A., Hristov, N.I., Horn, J.W., Jones, G., Kalko, E.K., Kelly, T.A., Larkin, R.P., Mccracken, G.F.,  Swartz, S.M., Srygley, R.B., Dudley, R.,  Westbrook, J. K. and Wikelski, M. 2008. Aeroecology: Probing and Modeling the Aerosphere.  Integrative and Comparative Biology. 48(1):1-11.Do leaf-cutter ants orient their path-integrated, home vector with a magnetic compass?

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(Abstract Only)Airspeed adjustment and lipid reserves in migratory Neotropical butterflies

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(Peer Reviewed Journal)Dudley, R., Srygley, R.B. 2008. Airspeed adjustment and lipid reserves in migratory Neotropical butterflies. Functional Ecology. 22(2):264-270.Do leaf-cutter ants Atta colombica orient their path-integrated, home vector with a magnetic compass?

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(Peer Reviewed Journal)Riveros, A.J., Srygley, R.B. 2008. Do leaf-cutter ants Atta colombica orient their path-integrated, home vector with a magnetic compass? Animal Behaviour 75:1273-1281.Optimal strategies for insects migrating in the flight boundary layer: Mechanisms and consequences

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(Abstract Only)El Niño and other determinants of butterfly migrations in a Neotropical wet forest

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(Abstract Only)Evolution of the wave: aerodynamic and aposematic functions of butterfly wing motion

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(Peer Reviewed Journal)Srygley, R.B. 2007. Evolution of the wave: aerodynamic and aposematic functions of butterfly wing motion. Proceedings of the Royal Society of London B. 274(1612):913-917.


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