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Rachel Lasley-Rasher

If you need to locate a faculty member with knowledge about particular functions of SMS (e.g., graduate admissions), you can find them on the list of current faculty committees.

Rachel Lasley-Rasher

Contact Information

Rachel Lasley-Rasher



Darling Marine Center
193 Clarks Cove Road 
Walpole, ME  04573


Ph. D. Georgia Institute of Technology 2012


I am interested in how animals that occupy basal trophic levels manage the conflicting demands of acquiring resources while avoiding the many hungry mouths in their environment.   I study how prey alter their behavior when exposed to elevated predation risk and how these behavioral changes can scale up to affect community and ecosystem-level processes.  For my PhD, I studied the role of predatory mysids in limiting the population growth of copepod prey by reducing their mating behavior.  In my postdoctoral research, I will determine the effects of anadromous fish migrations on the distribution and behavior of mysid shrimp over diel and seasonal cycles to better understand this critical link in coastal foodwebs.


  • Lasley-Rasher, R., Brady, D., Smith, B. and P. Jumars (2015). It takes guts to locate mobile crustacean prey. Marine Ecology Progress Series. 538: 1-12
  • Lasley-Rasher RS, Kramer AM, Burdett-Coutts V, Yen J (2014) Assessing the In Situ Fertilization Status of Two Marine Copepod Species, Temora longicornis and Eurytemora herdmani; How Common Are Unfertilized Eggs in Nature? PLoS ONE 9(11): e112920. doi:10.1371/journal.pone.0112920

    For more information: Full Text

  • J. Heuschele, S. Ceballos, C. Andersen Borg, O. Bj√¶rke, S. Isari, R. Lasley-Rasher, E. Lindehoff, A. Souissi, S. Souissi, J. Titelman (2014) Non-consumptive effects of predator presence on copepod reproduction: insights from a mesocosm experiment. Marine Biology. 161(7): 1653-1666

    For more information: Full Text

  • Lasley-Rasher, R., & J. Yen (2012) Predation risk suppresses mating success and reproductive output in the coastal marine copepod, Eurytemora herdmani. Limnology and Oceanography. 57(2):433-440

    For more information: Download file (PDF)

  • Lasley-Rasher, R., D. Rasher, Z. Marion. R. Taylor, M. Hay (2011) Predation constrains host choice for a marine mesograzer. Marine Ecology Progress Series 434:91-99

    For more information: Download file (PDF)

  • Yen, J. and R. Lasley (2011) Chemical communication between copepods: finding the mate in a fluid environment. In T. Breithaupt and M. Thiel (Ed.), Chemical Communication in Crustaceans. Springer New York. p 177-197


  • 2013 to 2015 — $170,000.00 — Ocean Sciences Postdoctoral Research Fellowship from National Science Foundation

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