Postdoctoral Fellow

Competition, guild structure and evolution in the carnivora

PI(s): Julie A Meachen
Start Date: 1-Aug-2009
End Date: 31-Jul-2012
Keywords:

I am examining how mammalian carnivores differentiate their diets and how they compete for resources within carnivore guilds. I will be examining both living guilds from all over the world and extinct guilds from the Pleistocene and Pliocene of North America. I will be looking at carnivore skeletal morphology to see if there is a shift in form or body size depending upon what other carnivore species are present in the guild. This data can ultimately be used to predict what will happen to the world's remaining carnivore species as other carnivore species in their guild become extinct.

For more information, my publications and CV go to:
http://www.duke.edu/~js311/

Related products

Publications
  • Evolution in coyotes (Canis latrans) in response to the megafaunal extinction. Meachen, J. and J.X. Samuels. In Press. Evolution in coyotes (Canis latrans) in response to the megafaunal extinction. Proceedings of the National Academy of Science.
  • Morphological convergence of the prey-killing arsenal of sabertooth predators Julie A. Meachen-Samuels. 2012, Morphological convergence of the prey-killing arsenal of sabertooth predators, Paleobiology, volume 38, issue 1, pp. 1-14
  • Morphological convergence of the prey-killing arsenal of sabertooth predators. Meachen-Samuels, J. In Press. Morphological convergence of the prey-killing arsenal of sabertooth predators. Paleobiology.
  • Aquatic adaptations in the nose of carnivorans: evidence from the turbinates. Van Valkenburgh, B., A. Curtis, J. X. Samuels, D. Bird, B. Fulkerson, J. Meachen-Samuels, and G. Slater. 2011. Aquatic adaptations in the nose of carnivorans: evidence from the turbinates. Journal of Anatomy 218: 298-310.
  • Comparative scaling of humeral crosssections of felids and canids using radiographic images. Meachen-Samuels, J. (2010). Comparative scaling of humeral crosssections of felids and canids using radiographic images. Journal of Mammalian Evolution 17: 193-209.
  • Sexual dimorphism and ontogenetic growth in the American lion and sabertoothed cat from Rancho La Brea Meachen-Samuels, J.A. and W.J. Binder (2010). Sexual dimorphism and ontogenetic growth in the American lion and sabertoothed cat from Rancho La Brea. Journal of Zoology 280(3): 271-279.
  • publication: Radiographs Reveal Exceptional Forelimb Strength in the Sabertooth Cat, Smilodon fatalis. Meachen-Samuels, J.A. and Van Valkenburgh, B. 2010. Radiographs Reveal Exceptional Forelimb Strength in the Sabertooth Cat, Smilodon fatalis. PLoS ONE 5: e11412.
  • Forelimb indicators of prey-size preference in the Felidae Meachen-Samuels, J.A., and B.V. Valkenburgh (2009). Forelimb indicators of prey-size preference in the Felidae. Journal of Morphology 270(6): 729-744.
  • The First Mid-blancan Occurrence of Agriotherium (Ursidae) in North America: a Record from Hagerman Fossil Beds National Monument, Idaho Samuels, J.X., J.A. Meachen-Samuels, and P.A. Gensler (2009). The First Mid-blancan Occurrence of Agriotherium (Ursidae) in North America: a Record from Hagerman Fossil Beds National Monument, Idaho. Journal of Paleontology 83(4): 597-603.
Proposals and Grants
  • Duke Postdoctoral Professional Development Award funded to attend SACNAS 2010 conference in Anaheim, CA in the capacity as a mentor, panelist, speaker and poster judge.
Presentations
  • Short untitled talk to the Pocatello, Idaho Kennel Club on canid turbinates and competition and niche partitioning in extinct canids. November 10, 2009
  • short talk for triangle area SCONCs at NESCent titled, "Smilodon fatalis, a different kind of predator" on November 19, 2009
  • Job interview talk for John Day Fossil Beds National Monument, titled, "Carnivore Morphology and Evolution: Past, Present and Future" given on November 17, 2009
  • Meachen-Samuels, J. and J.X. Samuels. 2011. Bigger, stronger and faster in the Pleistocene: evolutionary change in coyotes (Canis latrans) after the megafaunal extinction. Society for the Study of Evolution Meeting. Norman, OK.
  • Meachen-Samuels, J. 2011. Carnivore morphology and evolution: past, present and future. Marshall University, Huntington, WV.
  • Meachen-Samuels, J. 2010. Carnivore morphology and evolution: past, present and future. College of Charleston, Department of Biology departmental seminar, Charleston, SC.
  • Meachen-Samuels, J. 2010. Changes within carnivore guilds from the Pleistocene and Holocene of North America. 70th Annual Meeting of the Society of Vertebrate Paleontology, Pittsburgh, PA.
  • Talk presented at Society for the Study of Evolution Meeting, Portland, OR.
  • MEAS Departmental seminar at NC State University, titled "Morphology and evolution in the Carnivora: past, present and future" given on February 8, 2010
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