Thomas Juenger, Short Term Fellow. "Social Organization and Mating System of 

 Tropical Tent-Making Bats," with Stanley Rand, from June 1 to August 30, 

 1990. 



David A. King, Senior Postdoctoral Fellow, University of Wisconsin, Madison. 

 "The Significance of Leaf Arrangement in Tropical Trees," with Egbert 

 Leigh, from August 9, 1990 to August 8, 1991. 



Katarzyna Kubzdela, Short-Term Fellow. "Feeding Ecology and Food Patch 



Abandonment in Ateles qeoffroyi of Barro Colorado Island," with Nicholas 

 Smythe, from June 1 to August 31, 1990. 



Catherine Marler, Short-Term Fellow, University of Texas. "Mechanistic and 



Evolutionary Investigations of Natural Levels of Display Behavior of the 

 Tungara Frog," with Stanley Rand, from July 9 through August 30, 1990. 



Alberto Mena, Exxon Fellow, University of Panama. "Estrategias de 



Nidificacion y Metodo de Captura de Avispas Pompilidas (Himenoptera: 

 pompilidae) en San Bias," with Stanley Rand, from May 7 through August 

 7, 1990. 



Victor Moreno, Exxon Fellow, University of Panama. "Determinacion del Grado 

 de Heterocidad Genetico de las Abejas Africanizadas en Panama," with 

 David Roubik and Felicita Sousa, from February 1 through April 30, 1990. 



Darlyne Murawski, Postdoctoral Fellow, University of Texas. "Causes of 



Genetic Structure in Tropical Tree Populations," with James Hamrick, 

 from September 1, 1989 to September 30, 1990. 



Sean O'Donnell, Short Term Fellow. "The Physiology of Behavioral 



Specialization in Tropical Swarm-Founding Wasps (Hymenoptera: Vespidae: 

 Epiponini)," with Donald Windsor, from June 20 to October 19, 1990. 



Alfredo Reyes, Latin America Fellow, University of Panama. "Balance de 



Energia en Hojas de Arboles a Diferentes Niveles de Altura en el Bosgue 

 Humedo Tropical," with Alan Smith, from July 1 through September 30, 

 1990. 



Cynthia L. Sagers, Predoctoral Fellow, University of Utah. "Variation in 



Secondary Metabolites and Some Effects on Plant Fitness," with Egbert 

 Leigh, from August 24, 1990 to August 23, 1991. 



Oris Sanjur, Exxon Fellow, University of Panama. "Estudio del Numero de 



Cromosomas en el Genero Abudefduf , " with Harilaos Lessios and Eduardo 

 Vega from October 16, 1989 through January 14, 1990. 



Michelle Smith, Short-Term Fellow. "Communication and Behavior Patterns of 



Baird's Tapir ( Tapirus bairdii ) on Barro Colorado Island," with Nicholas 

 Smythe, from September 1 to November 30, 1990. 



David Snyderman, Short-Term Fellow, University of Vermont. "Comparison of the 

 Hydraulic Architecture of Evergreen and Deciduous Trees," with Egbert 

 Leigh and Alan Smith, from October 16 through December 26, 1989. 



62 



