My research focuses on the evolutionary causes and consequences of mode of development in marine gastropods. The mode of development (planktonic vs. benthic, feeding vs. non-feeding, encapsulated vs. free-living) has important consequences for dispersal, gene flow, and rates of speciation and extinction. However it is unclear what factors maintain the stunning diversity in mode of development that we observe in many groups of marine invertebrates. My research focuses on documenting the geographic and phylogenetic patterns in development mode and combining these patterns with the results of laboratory experiments to test hypotheses about the factors driving its evolution. Currently, we are beginning to apply NextGen approaches to understanding the differences in development among species of Crepidula (slipper limpets). There are numerous opportunities for Eco-evo-devo studies in this model system. For example, social cues cause sex change in Crepidula and examination of DNA methylation patterns in males and females may provide information on the mechanisms that underlie this unusual sex allocation strategy.
Representative and Recent Publications
- 1. Collin, R. 1995. Sex, size, and position: A test of models predicting the size at sex change in the protandrous gastropod Crepidula fornicata. American Naturalist. 146(6): 815-831.
- 12. Collin, R. 2000. Sex change, reproduction and development of Crepidula adunca and C. lingulata (Gastropoda: Calyptraeidae) The Veliger. 43: 24-33.
- 13. Collin, R. 2001. The effects of mode of development on phylogeography and population structure of North Atlantic Crepidula (Gastropoda: Calyptraeidae). Molecular Ecology. 10: 2249-2262.
- 14. Collin, R. and M. deMaintenon. 2002. Integrative approaches to biogeography: Patterns and processes on land and in the sea. Integrative and Comparative Biology. 42(5): 911-912.
- 15. Chaparro, O., J. L. Carpentier, and R. Collin. 2002. Embryonic velar structure and function in sibling species of Crepidula with different modes of development. Biological Bulletin. 203: 80-86.
- 16. Collin, R. 2002. Another last word on Crepidula convexa and a description of C. ustulatulina sp. nov. (Gastropoda: Calyptraeidae) from the Gulf of Mexico. Bulletin of Marine Science. 70(1): 177-184.
- 17. Collin, R. and Cipriani, R. 2003. Dollo's Law and the re-evolution of shell coiling. Proceedings of the Royal Society, Series B. 270: 2551-2555.
- 18. Collin, R. 2003. Phylogenetic relationships among calyptraeid gastropods and their implications for the biogeography of speciation. Systematic Biology. 52(5): 618-640. [cover] [Publisher's Award for Excellence in Systematic Research]
- 20. Collin, R. 2003. World-wide patterns of development in calyptraeid gastropods. Marine Ecology Progress Series. 247: 103-122.
- 22. Collin, R. 2004. The loss of complex characters, phylogenetic effects, and the evolution of development in a family of marine gastropods. Evolution. 58 (7): 1488-1502.
- 23. Collin, R. 2005. Ecological monitoring and biodiversity surveys at the Smithsonian Tropical Research Institute's Bocas Del Toro Research Station. Caribbean Journal of Science. 41(3): 367-373. [1 citation] & *§Collin, R. M. C. Diaz, J. Norenburg, R. M. Rocha, J. A. Sanchez, A. Schulze, M. Schwartz, and A. Valdes. 2005. Photographic identification guide to some common invertebrates of Bocas del Toro, Panama. Caribbean Journal of Science. 41(3): 638-707. [6 citations] 28. Collin, R. 2005. Development, phylogeny, and taxonomy of Bostrycapulus (Caenogastropoda: Calyptraeidae), an ancient cryptic radiation. Zoological Journal of the Linnean Society 144: 75-101. [13 citations]
- 31. Collin, R. 2006. Sex ratio, life history invariants, and patterns of sex change in a family of protandrous gastropods. Evolution 60: 735-745.
- 33. *§Baeza, J. A., J. M. Reitz, and R. Collin. 2007. Protandric simultaneous hermaphroditism and sex ratio in Lysmata nayaritensis Wicksten, 2000 (Decapoda: Caridea). Journal of Natural History. 41: 2843-2850. [1 citation]
- 36. §Collin, R. and M. Miglietta. 2008. Reversing opinions on Dollo's Law. Trends in Ecology and Evolution. 23(11): 602-609. [14 citations]
- 42. §Holford, M., N. Puillandre, M. V. Modica, M. Watkins, R. Collin, E. Bermingham, and B. M. Olivera. 2009. Correlating molecular phylogeny with venom apparatus occurrence in Panamic Auger snails (Terebridae). PLoS One. 4(11) e7667.
- 43. Collin, R. and M. Z. Salazar. 2010. Temperature-mediated plasticity and genetic differentiation in egg size and hatching size among populations of Crepidula (Calyptraeidae: Gastropoda). Biological Journal of the Linnean Society. 99(3): 489-499. [1 citation]
- 49. H. A. Lessios, S. Lockhart, R. Collin, G. Sotil, P. Sanchez-Jerez, K. S. Zigler, A. de Perez, M. J. Garrido, L. Geyer, G. Bernardi, V. Vacquier, S. T. Williams, R. Haroun, B. D. Kessing. 2011. Phylogeography and bindin evolution in Arbacia, a sea urchin genus with an unusual distribution Molecular Ecology (In Press).