Submitted Manuscripts
Carlos Nino-Torres et al., High similarities in dorsal fin ratios of bottlenose dolphins (Tursiops truncatus) in the Caribbean Sea. To Marine Mammal Science.
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Peer Reviewed Publications
Google Scholar metrics

  1. Luis, A. R., May-Collado, L. J., Rako-Gospic, N., Gridley, T., Papale, E., Azevedo, A., Silva, M. A., Buscaino, G., Herzing, D., and dos Santos, M. E. 2021. Vocal universals and geographic variations in the acoustic repertoire of the common bottlenose dolphin. Scientific Reports 11847.
  2. Perez-Ortega, B., Daw R., Paradee, B., Gimbrere, E. and L. J. May-Collado. 2021. Dolphin-watching boats affect whistle frequency modulation in bottlenose dolphins.  Frontiers in Marine Science, section Marine Megafauna. Article 618420.
  3. May-Collado, L. J. 2020. Coastal Resources of Bocas del Toro, Panama: Tourism and Development pressures and the quest for sustainability. Coastal Management, 48(3):232-233. https://doi.org/10.1080/08920753.2020.1747915 
  4. Kassamali-Fox, A., Christiansen, F., May-Collado, L. J., Ramos, E. A., and B. A. Kaplin. 2020. Tour boats impact the activity patterns of bottlenose dolphins (Tursiops truncatus) in Bocas del Toro, Panama.  Peer J. https://peerj.com/articles/8804/
  5. Luo, Y., Li  D., Gonzaga M., Santos A., Aiko, T., Yoshida, H., Haddad C., May-Collado, L., Turk, E., Gregoric, M., Kuntner M., and I. Agnarsson. In press. 2020. Global Diversification of Anelosimus Spiders Driven by Long Distance Overwater Dispersal and Neogene Climate Oscillations. Systematic Biology https://doi.org/10.1093/sysbio/syaa017
  6. Chereski, E., LJ., Beck, L., Gamboa-Poveda, M., Palacios-Alfaro, J. D., Monge-Arias, R., Chase, A. R., Coven, B. M., Guzman, A., McManus, N., O’Halloran, R. A., Neuhauss, A. P., Rosen, S. G., and L. J. May-Collado. Online publication 2019. Song structure and singing activity of two separate humpback whales populations wintering off the coast of Caño Island in Costa Rica. JASA Express Letters. https://asa.scitation.org/doi/10.1121/1.5139205.  
  7. Dalia C. Barragán-Barrera, Andrea Luna-Acosta, Laura J. May-Collado, Carlos Polo-Silva, Federico G. Riet-Sapriza, Paco Bustamante, María Paula Hernández-Ávila, Natalia Vélez, Nohelia Farías-Curtidor and Susana Caballero. 2019. Foraging habits and levels of mercury in a resident population of bottlenose dolphins (Tursiops truncatus) in Bocas del Toro Archipelago, Caribbean Sea, Panama. Marine Pollution Bulletin. 145: 343-356. https://www.sciencedirect.com/science/article/pii/S0025326X19303558.
  8. Gabriel Melo-Santos​, Angélica Lúcia Figueiredo Rodrigues, Rodrigo Hipólito Tardin, Israel de Sá Maciel, Miriam Marmontel, Maria Luisa Da Silva, Laura Johanna May-Collado. 2019.The newly described Araguaian river dolphins, Inia araguaiaensis (Cetartyodactyla, Iniidae), produce a diverse repertoire of acoustic signals. Peer Reviewed Publications. https://peerj.com/articles/6670/
  9. Barragan-Barrera, D. C., May-Collado, L. J., Tezanos-Pinto, G., Islas-Villanueva, V., Correa-Cardenas, C. A., and S. Caballero. 2017. High genetic structure and low mitochondrial diversity in bottlenose dolphins of the Archipelago of Bocas del Toro, Panama: a population at risk? ​https://doi.org/10.1371/journal.pone.0189370
  10. Laura J. May-Collado, Marisol Amador-Caballero, José Julio Casas, Mónica P. Gamboa-Poveda, Frank Garita-Alpízar, Tim Gerrodette, Rocío González-Barrientos, Gabriela Hernández-Mora, Daniel M. Palacios, José D. Palacios-Alfaro, Betzi Pérez, Kristin Rasmussen, Lissette Trejos-Lasso, Javier Rodríguez-Fonseca. 2017. Chapter 12. Ecology and Conservation of Cetaceans of Costa Rica and Panama. In Advances in Marine Vertebrate Research in Latin America (M. Rossi-Santos and C. Finkl eds). Springer Press.Print ISBN: 978-3-319-56984-0; Electronic ISBN: 978-3-319-56985-7
  11. Sitar, A., May-Collado, LJ., Wright, A. J., Peters-Burton, E., Rockwood, L., and E.C.M. Parsons. 2017. Tourists’perspectives on dolphin watching in Bocas del Toro. Tourism in Marine Environments. 12:79-94 https://doi.org/10.3727/154427316X14820977775343​
  12. Sitar, A., May-Collado, LJ., Wright, A. J., Peters-Burton, E., Rockwood, L., and E.C.M. Parsons. 2016. Boat operators in Bocas del Toro, Panama display low levels of compliance with national whale-watching regulations. Marine Policy. 68: 221-228.
  13. May-Collado, L. J., I. Agnarsson, & C. Zambrana. 2016. Global Spatial Analyses of Phylogenetic Conservation Priorities for Aquatic Mammals. In Biodiversity Conservation and Phylogenetic Systematics Preserving our evolutionary heritage in an extinction crisis. Editors: Roseli PELLENS and Philippe GRANDCOLAS. Springer Press.
  14. Jie Liu; May-Collado J Laura, PHD; Stano Pekár, and I. Agnarsson. 2016. A revised and dated phylogeny of cobweb spiders (Araneae, Araneoidea, Theridiidae): a predatory Cretaceous lineage diversifying in the era of the ants. Molecular Phylogenetics and Evolution.  http://www.sciencedirect.com/science/article/pii/S1055790315002997
  15. Esposito, L; Bloom, T; Caicedo-Quiroga L; Alicea-Serrano AM; Sánchez-Ruíz JA ;  May-Collado, LJ;  Binford GJ; Agnarsson I. 2015. Islands within islands: diversification of tailless whip spiders (Amblypygi, Phrynus) in Caribbean caves. Molecular Phylogenetics and Evolution.http://www.sciencedirect.com/science/article/pii/S1055790315002092  
  16. Dines, J., Mesnick, S., Ralls, K., May-Collado, L.J., Agnarsson, I., and D. Matthew. 2015. A tradeoff between precopulatory and postcopulatory trait investment in male cetaceans. Evolution. http://onlinelibrary.wiley.com/doi/10.1111/evo.12676/abstract
  17. May-Collado, L.J., C. W. Kilpatrick and I. Agnarsson. 2015. Mammals from ‘down under’: a multi-gene species-level phylogeny of marsupial mammals (Mammalia: Methateria). PeerJ 3:e805 http://dx.doi.org/10.7717/peerj.805. Nexus file download here
  18. Ruch J, Riehl T, May-Collado LJ & Agnarsson I (2015). Multiple origins of subsociality in crab spiders (Thomisidae). Molecular Phylogenetics and Evolution 82, Part A, 330–340. DOI 10.1016/j.ympev.2014.10.015
  19. May-Collado, L.J. and S. Quinones-Lebron. 2014. Dolphin changes in whistle structure with watercraft activity depends on their behavioral state.  J. Acoust. Soc. Am. EL 135, EL193-198.
  20. May-Collado, L.J. 2013. Guyana dolphins (Sotalia guianensis) from Costa Rica emit whistles that vary with surface behaviours. Journal of the the Acoustic Society of America, Express Letters, 134: EL359-EL365.
  21. May-Collado, L.J. and J. Forcada. 2012. Small-scale estimation of relative abundance for the coastal spotted dolphins (Stenella attenuata) in Costa Rica: the effect of habitat and seasonality. Revista de Biologia Tropical 60(2): 133-142.
  22. May-Collado, L.J. and I. Agnarsson. 2011. Phylogenetic analysis of conservation priorities for aquatic mammals and their terrestrial relatives, with a comparison of methods. PLoS One.6(7): e22562. Free download at:  http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0022562
  23. Sobrero, R., May-Collado, L.J., I. Agnarsson, and C. E. Hernandez. 2011. Expensive brains: “brainy” rodents have higher metabolic rate. Frontiers in Evolutionary neuroscience. Vol3/Article2/1. ​http://www.frontiersin.org/Journal/Abstract.aspx?s=411&name=evolutionary_neuroscience&ART_DOI=10.3389/fnevo.2011.00002
  24. Agnarsson, I., Zambrana-Torrelio, C. M., Flores-Saldana, N. P., and L. J. May-Collado. 2011. A time-calibrated species-level phylogeny of bats (Chiroptera, Mammalia). PLoS Currents: Tree of Life. Free download at:  http://currents.plos.org/treeoflife/article/a-time-calibrated-species-level-3chrbtx927cxs-5/
  25. Kuntner, M., May-Collado, L. J. and I. Agnarsson. 2011. Phylogeny and conservation priorities of afrotherian mammals (Afrotheria, Mammalia). Zoologica Scripta. 40:1-15.
  26. Martinez-Fernandez, D., Montero-Cordero, A. and L. J. May-Collado. 2011. Cetaceos de las aguas costeras del Pacifico norte y sur de Costa Rica. Revista de Biologia Tropical. 59 (1): 283-290.
  27. Agnarsson, I., Kuntner, M., and L. J. May-Collado. 2010. Dogs, cats, and kin: a near species-complete phylogeny of Carnivora. Molecular Phylogenetics and Evolution 54: 726-745.Press coverage: http://news.bbc.co.uk/earth/hi/earth_news/newsid_8383000/8383070.stm
  28. May-Collado, L.J.  and D. Wartzok. 2010. Sounds produced by tucuxi dolphins (Sotalia fluviatilis) from the Napo and Aguarico Rivers of Ecuador. Latin American Journal of Aquatic Mammals. Special Issue.  LAJAM 8(1-2): 131-136  .
  29. May-Collado, L. J. 2010. Changes in whistle structure of two dolphin species during interspecific associations. Ethology. 116:1065-1074.
  30. Press coverage: http://news.bbc.co.uk/earth/hi/earth_news/newsid_9045000/9045389.stm
  31. May-Collado, L.J. and D. Wartzok. 2009. A characterization of Guyana dolphin (Sotalia guianensis) whistles from Costa Rica: The importance of broadband recording systems. Journal of the Acoustical Society of America. 125 (2): 1202-1213.
  32. May-Collado, L. J. Chapter 42: Marine Mammals. 2009. In Marine Biodiversity of Costa Rica, Central America. Edited by Wehrmann, I. and J. Cortes. Springer Verglag Academic Press. ​Tables.
  33. Agnarsson, I. and L. J. May-Collado. 2008. The phylogeny of Cetartiodactyla: the importance of dense taxon sampling, missing data, and the remarkable promise of Cytochrome b to provide reliable species-level phylogenies. Molecular Evolution and Phylogenetics. 48:964-985.
  34. May-Collado, L. J. and D. Wartzok. 2008. A comparison of bottlenose dolphin whistle in the Western Atlantic Ocean: insights on factors promoting whistle variation. Journal of Mammalogy. 89:205-216.
  35. May-Collado, L. J., Agnarsson, I., and D. Wartzok. 2007. Phylogenetic review of tonal sound production in whales in relation to sociality. BMC Evolutionary Biology. 7:136 (Highly accessed).
  36. May-Collado, L. J., Agnarsson, I., and D. Wartzok. 2007. Reexamining the relationship between body size and tonal signals frequency in whales: a phylogenetic comparative approach.  Marine Mammal Science. 23 (3): 524–552.
  37. May-Collado, L. J. and D. Wartzok. 2007. Inia geoffrensis high frequency whistles.  Journal of the Acoustical Society of America. 121 (2): 1203-1212.
  38. Montero, A. & L. J. May-Collado. 2007. Ruido antropogenico: nuevo reto para los cetaceos. Ambientico ISSN 1409-214X Nº 163 ABRIL 2007, pg.10.
  39. Agnarsson, I., Coddington, J.A., and L.J. May-Collado. 2007. Elongated pedicillate setae- a putative sensory system and synapomorphy of spiders. Journal of Arachnology. 35: 411-426.
  40. Agnarsson, I., Barrantes, G. and L. J. May-Collado. 2007. Notes on the biology of Anelosimus pacificus Levi, 1963 (Theridiidae, Araneae)-evidence for an evolutionary reversal to a less social state. In press. Journal of Natural History. 40:2681-2687.
  41. May-Collado, L. J. and I. Agnarsson. 2006. Cytochrome b and Bayesian inference of whale phylogeny. Molecular Phylogenetics and Evolution. 38: 344–354 (2nd most downloaded paper between February and March 2006). https://doi.org/10.1016/j.ympev.2005.09.019​ 
  42. May-Collado, L. J. and Morales Ramírez, A. 2005. Presencia y Patrones de comportamiento del delfín manchado costero, Stenella attenuata graffmani (Cetacea: Delphinidae) en el Golfo de Papagayo, Costa Rica. Revista de Biología Tropical. 53:265-276. 
  43. May-Collado, L. J.; Gerrodete, T.; Calambokidis, J.; Rassumen K. and I. Sereg. 2005. Distribution of Cetaceans sightings in the EEZ of Costa Rica. Revista de Biología Tropical. 53: 249-263.​
  44. Rodríguez-Hernández, B. Chinchilla, F. A. and May-Collado, L. J. 2002.  Lista de especies,endemismo, y conservación de los mamíferos de Costa Rica. Revista Mexicana de Mastozoología. 6: 19-41.

Published Abstracts

Quiñones‐Lebrón S. G. and L. J. May‐Collado. 2011. Factores determining whistle emission rate in bottlenose dolphins of Bocas del Toro, Panama. J. Acoustic. Soc. Am. 129, 2671.
May-Collado, L. J. 2011. Whistle variation is associated with surface behavior in the Guyana dolphin (Sotalia guianensis). J. Acoustic. Soc. Am. 129, 2671.
May-Collado, L. J., Aide, M., Alvarez, A., and C. Corrada-Bravo.2010. A comparison of acoustic soundscapes within and among three tropical habitats: Can soundscape heterogeneity be used as an index of α and β diversity? J. Acoustic. Soc. Am. 128, 2412.

International Whaling Commission Meeting Abstracts

  1. Laura May-Collado, Betzi Perez, Dalia Barragan-Barrera, Kahlia Gonzales, Natalia Swack, Monica Gamboa Poveda and Jose David Palacios-Alfaro. 2019. An update of the conservation status of the bottlenose dolphins of Bocas del Toro Panama: Female calving intervals and calf survivorship. SC/68A/WW/WP/03/rev1
  2. Barragán-Barrera DC, May-Collado LJ, Islas-Villanueva, V., Caballero S. Isolated in the Caribbean: low genetic diversity of a bottlenose dolphin in Bocas del Toro, Panama. International Whaling Commission 2015; SC/66a/SM/13
  3. May-Collado, L. J., Trejos, L., Perez B.,  Gamboa-Poveda, M., Casas J.J., Jacome G., and A. Gonzalez. Panacetacea efforts for a participatory conservation planning of the dolphin watching industry in Bocas del Toro, Panama. International Whaling Commission 2015. SC/66a/WW1 _​
  4. May-Collado, L. J. and D. Wartzok. The effect of dolphin watching boat noise levels on the whistle acoustic structure of dolphins in Bocas del Toro, Panama. International Whaling Commission 2015. SC/66a/WW5.
  5. May-Collado, L. J. The acoustic behavior of Bocas del Toro dolphins varies with watercraft activity International Whaling Commission 2015. SC/66a/WW6.
  6. Trejos Lasso, L. and May-Collado, L. J. Bottlenose dolphins tursiops truncatus strandings in Bocas del Toro caused by boat strikes and fishing entanglement. International Whaling Commission 2015. SC/66a/WW7.
  7. May-Collado, L. J., Quiñones-Lebrón, S. G., Barragán-Barrera, D. C., Jose D. Palacios, Monica Gamboa-Poveda, and A. Kassamali-Fox. The Bocas del Toro dolphin watching industry relies on a small community of bottlenose dolphins: implications for  management. International Whaling Commission 2015. SC/66a/WW10.
  8. Kassamali-Fox. A., Christiansen, F., Quinones-Lebron, S., Rusk, A., May-Collado, LJ, and B. Kaplin. Using Markov chains to model the impacts of the dolphin watching industry on the dolphin community of Dolphin Bay, Bocas del Toro, Panama. International Whaling Commission 2015. SC/66a/WW11.
  9. Sitar, A., May-Collado, LJ, Wright, AJ, Peter-Burton, E, Rockwood, L, and ECM Parsons. The effect of whale watching vessels on the behaviour of common bottlenose dolphins (tursiops truncatus) in Bocas del Toro, Panama. International Whaling Commission 2015. SC/66a/WW12.
  10. Sitar, A., May-Collado, LJ, Wright, AJ, Peter-Burton, E, Rockwood, L, and ECM Parsons. Low levels of compliance with national whale watching regulations in dolphin watching boat operators in Bocas del toro, Panama.  International Whaling Commission 2015. SC/66a/WW14.
  11. Sitar, A., May-Collado, LJ, Wright, AJ, Peter-Burton, E, Rockwood, L, and ECM Parsons. Tourists perspectives on dolphin watching in Bocas del Toro, Panama support sustainable and educational tourism. International Whaling Commission 2015. SC/66a/WW15_.
  12. Sitar, A., May-Collado, LJ, Wright, AJ, Peter-Burton, E, Rockwood, L, and ECM Parsons. Opinions and perspectives of the dolphin watching boat operators in Bocas del Toro, Panama. International Whaling Commission 2015. SC/66a/WW16.
  13. May-Collado, L. J., Quiñones-Lebrón, S. G., Barragán-Barrera, D. C., Jose D. Palacios, Monica Gamboa-Poveda. 2014. The dolphin watching industry of Bocas del Toro continues impacting the resident bottlenose dolphin population.  International Whaling Commission, Slovenia. SC/65b/WW06.
  14. Sitar, A., May-Collado, L. J., Parsons E. C. M. 2014. High levels of non-compliance with whale-watching regulations in Bocas del Toro, Panama and effects of non-compliance on bottlenose dolphin behavior.  International Whaling Commission, Slovenia. SC/65b/WW09.
  15. May-Collado, L. J.1,2, Barragán-Barrera, D. C.3, Quiñones-Lebrón, S. G.1, & W. Aquino-Reynoso1. 2012. Dolphin watching boats impact on habitat use and communication of bottlenose dolphins in Bocas delToro, Panama during 2004, 2006-2010. International Whaling Commission. SC/64/WW2. 
  16. Barragán-Barrera DC, May-Collado LJ, Quiñones-Lebrón SG, Caballero S. Population at risk: low genetic diversity in bottlenose dolphins of Bocas del Toro, Panama. International Whaling Commission 2013; SC/65a/SM15: 1–11.
  17. Gamboa-Poveda M. and L. J. May-Collado. 2006 Insights on the occurrence, residency, and behavior of two coastal dolphins from Gandoca-Manzanillo, Costa Rica: Sotalia guianensis and Tursiops truncatus (Family Delphinidae). International Whaling Commission. SC/58/SM4. 

Conference Abstracts

  1. Azofeifa Solano, et al. Spatial and temporal variation of the acoustic cues in the low band frequency as proxy of fish acoustic activity in tropical shallow waters. Fish Bioacoustics 14 ICRS Bremen 2020.
  2. May-Collado, et al. Evolutionary shifts in body size and signal frequency suggest independent evolutionary histories. World Marine Mammal Conference. Dec. 2019.
  3. Luis, A. R. et al. Geographic variation in the acoustic repertoires of common bottlenose dolphins in the Atlantic Ocean and the Mediterranean Sea. World Marine Mammal Conference. Dec. 2019.
  4. Rosten et al. Singing activity and song structure of southern humpback whales wintering off the coast of Costa Rica and Panama. World Marine Mammal Conference. Dec. 2019.
  5. Djokic, et al. Building A Dictionary Of Humpback Whale Song Units As A Tool For Assessing Stock Interactions. World Marine Mammal Conference. Dec. 2019.
  6. Gonsalez, et al. Female Productivity and Calf Survivorship of Bottlenose Dolphins (Tursiops truncatus) in Bocas, Panama. World Marine Mammal Conference. Dec. 2019.
  7. Daw et al. Effect of Boat Activity on the Acoustic Communication of Bottlenose Dolphins (Tursiops Truncatus) of Dolphin Bay, Bocas Del Toro, Panama. World Marine Mammal Conference. Dec. 2019.
  8. Barragan-Barrera, Polo-Silva Carlos, Bustamante Paco, May-Collado Laura, Caballero Susana, Luna-Acosta Andrea. 2018. Biomagnificación de mercurio en la cadena alimenticia de los delfines nariz de botella en Bocas del Toro, Panamá. Comité Organizador del XII Congreso de la Sociedad Latinoamericana de especialistas en Mamíferos Acuáticos, Nov 9-8, Lima, Peru.
  9. Barragan-Barrera, Polo-Silva Carlos, Bustamante Paco, May-Collado Laura, Caballero Susana, Luna-Acosta Andrea. 2018. Biomagnificación de mercurio en la cadena alimenticia de los delfines nariz de botella en Bocas del Toro, Panamá. Comité Organizador del XII Congreso de la Sociedad Latinoamericana de especialistas en Mamíferos Acuáticos, Nov 9-8, Lima, Peru.
  10. Perez Ortega P., Hendry, A., and L. J. May-Collado. 2018. Contribution of tour boats to the soundscape and the potential effects on bottlenose dolphins in Bocas del Toro. Poster Presentation, Smithsonian Tropical Research Institute, Panama. 
  11. Melos-Santos, G. et al. May-Collado. 2017. Is there geographical variation in whistles of the genus Sotalia? A distribution-wide approach. 22nd. Biennial Conference on the Biology of Marine Mammals, Halifax, Nova Scotia October 23-27.
  12. Barragan-Barrera, et al. May-Collado and Caballero. 2017. Insights into the foraging ecology of an isolated bottlenose Dolphin population in the Archipelago of Bocas del Toro (Panama). 22nd. Biennial Conference on the Biology of Marine Mammals, Halifax, Nova Scotia October 23-27.
  13. Melo-Santos et al., May-Collado (adviser). 4th International Symposium on Acoustic Communication by Animals, Nebraska, July 18-22, 2017.
  14. ​May-Collado, L.J., Palacios, J.D., Gamboa-Poveda, M., Quesada Alpízar, M., and Ana Guzmán. 2017. Using remote acoustic technology to document fluctuations in marine communities, boat traffic, and habitat use by two cetaceans in the Biological Reserve of Caño Island in Costa Rica. International Marine Protected Areas Congress, Chile September 2017.
  15. May-Collado, LJ, On the evolution of acoustic communication of Cetaceans and their terrestrial relatives.Biennial Conference on the Biology of Marine Mammals, San Francisco Dec 12-18, 2015. Oral Presentation.
  16. Kassamali-Fox. A., Christiansen, F., Quinones-Lebron, S., Rusk, A., May-Collado, LJ, and B. Kaplin. 2015.  Evaluating the effects of dolphin watching boats on the behavior of bottlenose dolphins in Bocas del Toro, Panama: using Markov chains to model the impacts of tourism on a genetically distinct population. Biennial Conference on the Biology of Marine Mammals, San Francisco Dec 12-18, 2015. Oral Presentation.
  17. Barragan-Barrera et al. High population structure of bottlenose dolphin population in Bocas del Toro, Panama.Biennial Conference on the Biology of Marine Mammals, San Francisco Dec 12-18, 2015. Poster Presentation.
  18. Monica Gamboa-Poveda, Giselle Veve, Dalia-Barragan-Barrera, Ayshah Kassamali-Foxand Laura J. May-Collado.Residency and association patterns of two neighboring populations of bottlenose dolphin in the Caribbean coast of Costa Rica and Panama.Biennial Conference on the Biology of Marine Mammals, San Francisco Dec 12-18, 2015. Poster Presentation.
  19. May-Collado LJ and D. Wartzok. 2015. The effect of changing ambient noise levels on the whistle acoustic structure of dolphins in Bocas del Toro, Panama. Watkins Memorial Meeting at Bedfort, MA.
  20. May-Collado, L. J., Quiñones-Lebrón, S. G., Barragán-Barrera, D. C. Jose D. Palacios, Monica Gamboa-Poveda. La observación comercial de delfines afecta el uso de hábitat de los delfines nariz de botella de Bocas del Toro: pasado, presente, y un futuro preocupante. SOLAMAC, Cartagena, Dec. 1-5, 2014. Oral Presentation part of the Whale-Watching Symposium.
  21. May-Collado LJ and SG Quiñones-Lebrón. 2013. Estado del conocimiento de los delfines de Bocas del Toro y su interaccion con la observacion comercial de avistamientos de delfines en Panama. Grupo Argentina/International Whale Commission. Diciembre, Cartagena, Colombia. 
  22. Barragán-Barrera DC, May-Collado LJ, Quiñones-Lebrón SG, Caballero S. Population at risk: low genetic diversity in bottlenose dolphins of Bocas del Toro, Panama. 20 th Biennial Conference on the Biology of Marine Mammals, New Zealand. Poster Presentation.
  23. Mesnick, S. L., May-Collado, L J, Agnarsson, I., Ralls, K., Chan, C., and A. Allen. 2012. Sexual selection sperm competition and the evolution of cetacean mating systems.  49th Annual Meeting of the Animal Behavior Society - June 10-14 2012 (Joint HBES). New Mexico.
  24. May-Collado, L. J. and I. Agnarsson. 2009. Phylogenetic analyses of conservation priorities for cetaceans and pinnipeds. 18th Biennial Conference on the Biology of Marine Mammals, Quebec. Oral Presentation.
  25. Gamboa-Poveda, M. P., Ramirez, O., and L.J. May-Collado. 2009. Population size, distribution, and habitat use of two sympatric dolphin species the Guyana dolphin (Sotalia guianensis) and the Bottlenose dolphin (Tursiops truncatus) from the Southern Caribbean of Costa Rica. 18th Biennial Conference on the Biology of Marine Mammals, Quebec. Poster.
  26. Barragan-Barrera, D. C., Palacios Alfaro, J. D., Taubitz, E., and L. J. May-Collado. 2009. A spatial analysis of habitat use by bottlenose dolphins from Bocas del Toro, Panama. 18th Biennial Conference on the Biology of Marine Mammals, Quebec. Poster.
  27. Garcia, C., Avila, I. C., Palacios, D., Gerrodette, T., Suarez, M. Soler, G., Trujillo, F., Bessudo, S., Rasmussen, K., May-Collado, L. J., and C. Parson. 2008. Presencia, distribución y amenazas de Stenella attenuata y Tursiops truncatus en el Pacífico de Panamá y Colombia. Mamiferos Acuaticos de Sur America, Uruguay. Poster.
  28. Paulo A.C. Flores, Mariel Bazzalo, Susana Caballero, Marcos C.O. Santos, Marcos R. Rossi-Santos, Fernando Trujillo, Jaime Bolaños-Jimenez, Marta J. Cremer, Laura J. May-Collado, Flávio J. L. Silva, Maria Gabriela Montiel, Alexandre F. Azevedo, Ana C. O. Meirelles, Leonardo Flach, Hector Barrios, Paulo C. Simões-Lopes, Haydée A. Cunha and Koen Van Waerebeek. 2008. Proposed English common name of Sotalia guianensis dolphin. Mamiferos Acuaticos de Sur America, Uruguay. Poster.
  29. May-Collado, L. and D. Wartzok. 2007. The intertwined evolutionary history of tonal sounds and social complexity: a phylogenetic approach.  17th Biennial Conference on the Biology of Marine Mammals, Nov 29-Dec3, Cape Town, South Africa. Poster.
  30. Martínez-Fernández, D., A. Montero-Cordero and L. J. May-Collado. 2007. Evaluation of photo-ID techniques success in Pseudorca crassidens from coastal waters of Costa Rica. 17th Biennial Conference on the Biology of Marine Mammals, Nov. 29th- Dec. 3rd. Cape Town, South Africa. Poster.
  31. May-Collado, L. and M. Gamboa-Poveda. 2006. Insights on the biology of Sotalia guianensis at Gandoca-Manzanillo, Costa Rica: residency, habitat use, acoustics, and reactions to anthropogenic noise. Sotalia Workshop, Rio de Janeiro, Brazil. Abstract.
  32. May-Collado, L. and D. Wartzok. 2005. The evolution of cetacean whistles: a phylogenetic comparative approach. 16th Biennial Conference on the Biology of Marine Mammals, Dec 12-16. San Diego, USA. Oral Presentation.
  33. Martinez-Fernandez, J. D., Cordero-Montero, A., L. May-Collado, and J. Calambokidis. 2005. Photo-ID of false killer whales of Costa Rica. 16th Biennial Conference on the Biology of Marine Mammals, Dec 12-16. San Diego, USA. Poster.
  34. May-Collado, L. Wartzok, D., and M. Gamboa. 2005. Plasticidad en las vocalizaciones de delfines?: efecto del ruido antropogenico en Costa Rica. Primer Congreso de Vida Silvestre Latinoamericano, San Jose Costa Rica, Feb 2005. Poster.
  35. Cordero-Montero, A. and L. J. May-Collado. 2005. Evaluación de la técnica de foto-identificación en el delfín manchado costero, Stenella attenuata graffmani. Primer Congreso de Vida Silvestre Latinoamericano, San Jose Costa Rica, Feb 2005. Poster.
  36. Rasmussen, K.; Calambokidis, J.; Steiger, G.; Saborio, M.; May-Collado, L. and T. Gerrodette. 2001. Extent of geographic overlap of north Pacific and south Pacific humpback whales on their Central American wintering grounds. 14th Biennial Conference on the Biology of Marine Mammals, Nov 28- Dec 3. Vancouver, Canada. Talk.
  37. May-Collado, L. and J. Forcada. 2001. Abundance, Occurrence and Behavior of the coastal spotted dolphin (Stenella attenuata graffmani) in the northern Pacific of Costa Rica.  14th Biennial Conference on the Biology of Marine Mammals, Nov 28-Dec 3. Vancouver, Canada. Poster.

Technical Reports