Dr. A. C. (Ale) Costamagna

Dr. A.C. (Ale) Costamagna       
Ph.D. (Michigan State University)

Associate Professor

Room 217 Entomology Building
Winnipeg Manitoba R3T 2N2 CANADA

Telephone: (204) 474-9007
Facsimile: (204) 474 7628
Email: Ale.Costamagna@umanitoba.ca

Lab Website: http://home.cc.umanitoba.ca/~costamac/index.html

Research Interests:

  • Arthropod-mediated ecosystem services
  • Effects of landscape structure on agricultural pests and beneficial insects
  • Plant resistance to insect pests
  • Bottom-up and top-down controls of herbivores
  • Trophic cascades in agroecosystems
  • Intraguild predation
  • Biological control and integrated pest management
  • Food webs


Peer-reviewed journals:

30. Samaranayake*, KGLI, and AC Costamagna (2018) Levels of predator movement between crop and neighboring habitats explain pest suppression in soybean across a gradient of agricultural landscape complexity.  Agriculture, Ecosystems and Environment 259: 135 - 146

29. Bannerman, JA, McCornack, BP, DW Ragsdale, N Koper, and AC Costamagna (2018) Predators and alate immigration influence the season-long dynamics of soybean aphid (Hemiptera: Aphididae). Biological Control 117: 87-98

28. Ríos Martínez*, AF, and AC Costamagna (2018) Effects of crowding and host plant quality on morph determination in the soybean aphid, Aphis glycines (Hemiptera: Aphididae). Entomologia Experimentalis et Applicata 166: 53-62

27. Vankosky, MA, HA Cárcamo, HA Catton, AC Costamagna, and R De Clerck-Floate (2017) Impacts of the agricultural transformation of the Canadian Prairies on grassland arthropods. Canadian Entomologist 149: 718 – 735.

26. Ríos Martínez*, AF, and AC Costamagna (2017) Dispersal to predator-free space counterweights fecundity costs in alate aphid morphs. Ecological Entomology 42: 645 -656

25. Koch, RL, and AC Costamagna (2017) Reaping benefits America. BioCofrom an invasive species: Role of Harmonia axyridis in natural biological control of Aphis glycines in North America. BioControl 62: 331-340.

24. Costamagna, AC, WN Venables, and NA Schellhorn (2015) Landscape-scale pest suppression is mediated by timing of predator arrival. Ecological Applications 25:1114-1130.

23. Bannerman, JA, Costamagna, AC, BP McCornack, and DW Ragsdale (2015) Comparison of relative bias, precision, and efficiency of sampling methods for natural enemies of soybean aphid (Hemiptera: Aphididae). Journal of Economic Entomology 108: 1381-1397.

22. Hesler, LS, MV Chiozza, ME O'Neal, GC MacIntosh, KJ Tilmon, DI Chandrasena, NA Tinsley, SR Cianzio, AC Costamagna, E Cullen, CD DiFonzo, BD Potter, DW Ragsdale, K Steffey, and KJ Koehler (2013) Performance and prospects of Rag genes for management of soybean aphid. Entomologia Experimentalis et Applicata 147: 201 – 216.

21. Costamagna, A. C., McCornack, B. P., and D. W. Ragsdale. 2013. Alate immigration disrupts soybean aphid suppression by predators. J. Applied Entomology 137: 317-320.

20. Costamagna AC, McCornack BP, Ragsdale DW. 2013. Within-plant bottom-up effects mediate non-consumptive impacts of top-down control of soybean aphids. PLoS ONE 8(2): e56394. doi:10.1371/journal.pone.0056394

19. Macfadyen, S.,  S. Cunningham, A.C. Costamagna, and N.A. Schellhorn. 2012. Managing ecosystem services and biodiversity conservation in agricultural landscapes: are the solutions the same? Journal of Applied Ecology 49: 690 - 694.

18. Costamagna, A. C., and D. A. Landis. 2011. Lack of strong refuges allows top-down control of soybean aphid by generalist natural enemies.  Biological Control 57: 184 – 192.

17. Chenaux, B., A. C. Costamagna, F. J. A. A. Bianchi, and N. A. Schellhorn. 2011. Functional response of two common Australian predators, Dicranolaius bellulus (Guérin-Méneville) (Coleoptera: Melyridae), and Micraspis frenata (Erichson) (Coleoptera: Coccinellidae), attacking Aphis gossypii Glover (Hemiptera: Aphididae). Australian Journal of Entomology 50: 453 - 459

16. Costamagna, A. C., McCornack, B. P., D. W. Ragsdale, and D. A. Landis. 2010. Development and validation of node-based sample units to estimate Aphis glycines densities in field cage experiments. Journal of Economic Entomology 103: 1483 – 1492.

15. Johnson, K. D., M. O' Neal, D. W. Ragsdale, C. D. DiFonzo, S. M. Swinton, P. M. Dixon, B. D. Potter, E. W. Hodgson, and A. C. Costamagna. 2009. Probability of cost-effective management of soybean aphid (Hemiptera: Aphididae) in North America. Journal of Economic Entomology 102: 2101 - 2108.

14. Matis, J.H., T.R. Kiffe, W. van der Werf, A.C. Costamagna, T.I. Matis, and W.E. Grant. 2009. Population dynamics models based on cumulative density dependent feedback: A link to the logistic growth curve and a test for symmetry using aphid data. Ecological Modelling, 220: 1745 – 1751.

13. McCornack, BP, AC Costamagna, and DW Ragsdale. 2008. Within-plant distribution of soybean aphid (Hemiptera: Aphididae) and development of node-based sample units for estimating whole-plant densities in soybean. Journal of Economic Entomology 101: 1488 - 1500.

12. Costamagna, A. C., D. A. Landis, and M. J. Brewer. 2008.  The role of natural enemy guilds in Aphis glycines suppression. Biological Control 45: 368–379.

11. Costamagna AC, W van der Werf, FJJ Bianchi, DA Landis. 2007. An exponential growth model with decreasing r captures bottom-up effects on the population growth of Aphis glycines Matsumura (Hemiptera: Aphididae). Agricultural and Forest Entomology  9: 297 – 305.

10. Costamagna, A. C., and D. A. Landis.  2007. Quantifying predation on soybean aphid through direct field observations.  Biological Control 42: 16 – 24.

9.  Costamagna, A. C., D. A. Landis, and C. D. DiFonzo.  2007. Suppression of soybean aphid by generalist predators results in a trophic cascade in soybean. Ecological Applications 17: 441 - 451.

8.  Costamagna, A. C., and D. A. Landis.  2006.  Predators exert top-down control of soybean aphids across a gradient of agricultural management systems.  Ecological Applications 16: 1619 - 1628.

7.  Landis, D.A., F.D. Menalled, A.C. Costamagna and T.K. Wilkinson.  2005. Manipulating plant diversity to enhance beneficial arthropods in agricultural landscapes.  Weed Science 53: 902-908.

6.  Costamagna, A. C., A. M. M. De Remes Lenicov, and M. Zanelli. 2005.  Maize and oat antixenosis and antibiosis against Delphacodes kuscheli (Homoptera: Delphacidae), vector of “Mal de Rio Cuarto” of maize in Argentina.  Journal of Economic Entomology 98: 1374-381.

5.  Landis, D. A., T. B. Fox, and A. C. Costamagna. 2004.  Impact of multicolored Asian lady beetle as a biological control agent.  American Entomologist 50: 153-155.

4.  Costamagna, A. C., Menalled, F.D., and D.A. Landis. 2004.  Host density influences parasitism of the armyworm Pseudaletia unipuncta in agricultural landscapes. Basic and Applied Ecology 5: 347-355.

3.   Costamagna, A. C., and D.A. Landis.  2004.  Effect of food resource provision on adult Glyptapanteles militaris (Walsh) and Meteorus communis (Cresson) (Hymenoptera: Braconidae), parasitoids of the armyworm, Pseudaletia unipuncta (Haworth) (Lepidoptera: Noctuidae).  Environmental Entomology 33: 128 - 137.

2.   Menalled, F.D., A.C. Costamagna, P.C. Marino and D.A. Landis.  2003.  Temporal variation in the response of parasitoids to agricultural landscape structure.  Agriculture, Ecosystems and Environment 96: 29-35.

1.   Remes Lenicov, A.M.M. de, R. Mariani and A.C. Costamagna.  1997.  Morphology, biology, and ecology of Dicranotropis fuscoterminata (Homoptera: Delphacidae) on maize in Argentina.  Neotrópica 43 (109-110): 7-14. (in Spanish with abstract in English)

Book chapters:

Gardiner, M.M., A.K. Fiedler, A.C. Costamagna, and D.A. Landis. 2009. Integrating Natural Control into IPM: Spatial and Temporal Considerations. In E. B. Radcliffe and W. D. Hutchinson, IPM Textbook.

Published Proceedings (peer-reviewed)

Matis, J.H., T.R. Kiffe, W. van der Werf, A.C. Costamagna, T.I. Matis, and G.J. Michels Jr.  2009. Comparisons of two symmetric density function solutions of aphid population growth models. Proceedings of the Conference on Applied Statistics in Agriculture, Kansas State University.

Costamagna, A.C.  1997.  Río Cuarto Maize Disease.  Resistance of six maize lines to vector Delphacodes kuscheli (Homoptera: Delphacidae) in laboratory conditions.  Proc. VI National Congress of Maize, Volume I (I): 73 - 78. (in Spanish)

Presello, D.A., A.C. Costamagna, L. Conci, A.M.M.de Remes Lenicov, F.A. Guzmán and P. Herrera.  1997.  Río Cuarto Maize Disease. Study of vector capacity of Toya propinqua  populations in Pergamino area (Buenos Aires, Argentina).  Proc. VI National Congress of Maize, Volume I (II): 1- 5. (in Spanish)

Remes Lenicov, A.M. M. de, S. Paradell, E. Virla, G. Varela, A.C. Costamagna and R. Mariani.   1997.  Leafhoppers and Planthoppers damaging to maize crop in Argentina (Insecta-Homoptera).  Proc. VI National Congress of Maize, Volume I (II): 58 - 74. (in Spanish)


2014-2018 $451,955 Costamagna, A. C. Mechanisms of resistance to wheat midge in wheat germplasm. Western Grains Research Foundation
2014-2015 $179,672 Sharanowski, B.J., and A. C. Costamagna. High-Throughput Biodiversity Facility in Entomology for Sustainable Agriculture. Canadian Foundation for Innovation.
2012-2017 $125,000 Costamagna, A. C. Multi-scale herbivore regulation in agroecosystems: role of multiple predator assemblages and bottom-up controls. NSERC Discovery Grants – Individual
2012-2015 $96,950 Costamagna, A. C. Soybean Aphid Control by Natural Enemies in Manitoba. Manitoba Pulse Growers Association Research Grants / Growing Forward - ARDI
2012 $7,000 Costamagna, A. C. Mechanisms of herbivore control in perennial versus annual crops: a food web approach. University of Manitoba / URGP
2007-2008 $160,360 Ragsdale, D. W., G. E. Heimpel, A. C. Costamagna, and B. P. McCornack. Incorporating Natural Enemies into the Economic Thresholds for Soybean Aphid.  Rapid Agricultural Response Fund, University of Minnesota.
2005-2006 $205,000 Landis, D.A., M. J. Brewer, A.C. Costamagna, and G. Heimpel.  Does Intraguild Predation Limit Soybean Aphid Parasitoid Impacts?  USDA-National Research Initiative Grant.
2003-2004 $54,000 Landis, D.A., K. Thelen, C. DiFonzo, M. O’Neal, and A.C. Costamagna.  Do Predation and Host Plant Quality Interact to Regulate Soybean Aphid?  Michigan State University Sustainable Agriculture Special Grant.
2001-2002 $1,000 Costamagna, A.C.  Influence of mating status and food and host availability on the longevity and fecundity of Glyptapanteles militaris and Meteorus communis (Hymenoptera: Braconidae), parasitoids of the true armyworm, Pseudaletia unipuncta (Lepidoptera: Noctuidae). Hutson Research Grant, Dept. of Entomology, Michigan State University.
1997 $500 Brentassi, M.E., A.C. Costamagna, and G.L. Varela.  1997.  Feeding ecology of Homoptera Auchenorrhyncha pest of maize in Argentina, in laboratory conditions. (Insecta).  Research support for Graduate Teaching Assistants, College of Natural Sciences, La Plata National University.


Principles of Ecology (AGEC 2370, Fall term)
Physiological Ecology of Insects (ENTM 4520, Winter term even years, with R. Currie)
World of Bugs (ENTM 1000, with T. Galloway, R. Currie, B. Sharanowski, and K. Rochon, Winter term)

Advances in the Physiological Ecology of Insects (ENTM 7240, Winter term even years, with R. Currie)
Advanced Entomology  (ENTM 7150, Winter term, with B. Sharanowski, and K. Rochon)