UPR Biology


Rafael L. Joglar

Professor

Ph.D., University of Kansas, 1986

Phone (787)764-0000 ext. 3567

E-mail: rjoglar@upracd.upr.clu.edu y home page: http://home.coqui.net/emart

Fax: (787) 764-2610

Field of Interest: Systematics, ecology, and conservation of West Indian amphibians and reptiles; biology of the Neotropical frogs of the genus Eleutherodactylus; conservation.


The long term goal of our research program is to study the biology of all species of the genus Eleutherodactylus in Puerto Rico. One of our research projects is to conduct long term studies on population fluctuations, relative abundance, reproductive activity, and diversity. Comparisons between different amphibian communities are carried out at different localities in Puerto Rico. Another goal of our research program is conservation and management of endangered threatened and species at risk of amphibians and reptiles in Puerto Rico. In order to investigate the status of these species, we are:

  1. preparing historical and actual distribution maps for each of the declining, threatened and endangered species using information from literature and museums
  2. verifying the presence of populations in the field
  3. determining species status, population density, possible predators and potential problems.

It has become evident that several endemic species of Eleutherodactylus are declining. To investigate the genetic structure of these populations we are performing allozyme electrophoresis (cellulose acetate) using toe clippings as the source of tissue.

Selected Publications:

Joglar, Rafael L. 1999. !Que cante el Coquí¡ Ensayos, Cartas y otros documentos sobre la conservación de la Biodiversidad en Puerto Rico (1987-1999) Proyecto Coquí. San Juan, 160 páginas.

Joglar, R.L. and N. Ríos-López. 1998. Eleutherodactylus coqui. Dominican Republic. Herpetological Review. 29 (2):107.

Joglar, R.L., N. Ríos-López and M. Cardona. 1998. Osteopilus septentrinalis. Puerto Rico, Coamo. Herpetological Review. 29 (2):107.

Joglar, Rafael L. 1998. "Los Coquíes de Puerto Rico: Su historia natural y conservación". Editorial de la Universidad de Puerto Rico. 232 pág.

Thomas R. and R. Joglar, 1996. The Herpetology of Puerto Rico: Past, Present and Future, p.181-200. In:The Scientific Survey of Puerto Rico and the Virgin Islands. An Eighty-year Reassessment of the Island's Natural History. Annals of New York Academy of Science. Volume 766.

Joglar, R.L., P.A. Burrowes and N. Ríos, 1996. Biology of the Puerto Rican cave-dwelling frog, Eleutherodactylus cooki and some recommendations for its conservation, p.251-258. In: Powell, R. and R. Henderson (eds). Contributions to West Indian Herpetology: A Tribute to Albert Schwartz. The Society for the Study of Amphibians and Reptiles. Ithaca (New York). Contribution to Herpetology. Volume 12.

Joglar, R.L. and P.A. Burrowes, 1996. Declining amphibian populations in Puerto Rico. p.371-380. In: Powell, R. and R. Henderson (eds). Contributions to West Indian Herpetology: A Tribute to Albert Schwartz. The Society for the Study of Amphibians and Reptiles. Ithaca (New York). Contribution to Herpetology. Volume 12.

Goldberg, S. R., H.J.Hulshuh and R.L. Joglar, 1996. Eleutherodactylus cooki (Guajón or Demonio de Puerto Rico). Ectoparasite. Herpetological Review 27(1):18.

Joglar, R.L. and N. R¡os, 1995. Osteopilus septentrionalis. Cuban Treefrog, Rana Platanera. Herpetological Review. 26(2):105-106.

Joglar, R.L. and P.A. Burrowes, 1993. Puerto Rico. p.23-24; 79-80. In: Vial, J. and L. Saylor. The status of amphibian populations: A compilation and analysis. IUCN. Species Survival Commission. 98 pp.

Burrowes, P. A. and R.L. Joglar, 1991. A Survey of the population status and ecological evaluation of Puerto Rican frogs. p. 42-46. In: Moreno, J.(ed.). Status y distribución de los anfibios y reptiles de Puerto Rico. Publicación Científica Miscelanea. No. 1. Departamento de Recursos Naturales, San Juan, Puerto Rico.

Joglar, R.L. and P.A. Burrowes, 1991. El efecto del Huracán Hugo sobre una comunidad de anfibios en El Yunque, Puerto Rico y algunas recomendaciones sobre protección de las especies del género Eleutherodactylus. In: Moreno,J.(editor). Status y distribución de los anfibios y reptiles de Puerto Rico. Publicación Científica miscelanea. No. 1:47- 53. Departamento de Recursos Naturales, San Juan, Puerto Rico.

Joglar, R., 1989. A phylogenetic analysis of the West Indian Frogs of the Genus Eleutherodactylus: A Morphological Study. In: C.A. Woods, ed, Biogeography of the West Indies. Sandhill Crane Press, Gainsville, FL, XVII+ 878p.

Joglar, R. and J. A. Rivero, 1986. Sinonimia de Eleutherodactylus ramosi Rivero. Carib. Jour. Sci.22 (1-2):