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Contact info:
geller@mlml.calstate.edu
Office: (831) 771-4436
Lab: (831) 771-4420
Fax: (831) 771-4403

Primary research interests: I am broadly interested in the evolutionary ecology of marine invertebrates, with three major foci: phylogeography, the genetics of biological invasions, and the interface of developmental biology and ecology. Phylogeogrphy is the investigation of intraspecific phylogenies in a geographic context, and the Invertebrate Lab has conducted studies of molluscs, cnidarians and echinoderms from California, the Indo-West Pacific, and South America. We also study the genetic consequences of biological invasions in terms of population genetics, as well as a growing interest in functional genomic approaches. Our studies of "eco-devo" center on the evolution of clonality in sea anemones.

Current Projects: (1) The evolution of gamete receptor proteins in tropical limpets; (2) The role of apoptosis in fission in sea anemones; (3) Phylogeography of cone snails (genus Conus ) in the Indo-West Pacific; (4) Characterization of allorecognition receptors in sea anemones.

Background: Ph.D. UC Berkeley 1988

Bibliography:

Fitzgerald, L. and J.B. Geller. Nuclear intron phylogenies and evolution of clonality among northeastern Pacific Anthopleura . Molecular Evolution and Phylogenetics. In review

Geller, J.B. Fission in sea anemones: integrative studies of life cycle evolution. Journal of Integrative and Comparative Biology. In press

Geller J.B., Meyer, C., and G. Paulay. Fine scale endemism on Pacific coral reefs: evidence from a gastropod. Evolution. In press Geller, J.B. 2003.

A review of apparent 20th century changes in the presence of mussles ( Mytilus trossulus ) and marcroalgae in Arctic Alaska, and of historical and palenotological evidence used to related mollusc distrubtions to climate change. Arctic 56:391-407

Breaking up and getting together: evolution of symbiosis and cloning by fission in sea anemones (genus Anthopleura). Evolution 55(9): 1781-1794.

Ting, J.H., and J.B. Geller. 2000. Clonal diversity in introduced populations of the sea anemone Diadumene lineata (Verill, 1869) (Cnidaria: Anthozoa) revealed by SSCP analysis of the ribosomal ITS region. Biological Invasions, 2:23-32.

Bagley, M.J., and J.B Geller. 2000. Microsatellite DNA analysis of native and invading populations of European Green crabs. Proceedings of the National Conference on Marine Bioinvasions. MIT Sea Grant Publication, Cambridge, MA.

Carlton, J.T, Geller, J.B., Reaka-Kudla, M.L., and Norse, E. 1999. Historical extinctions in the sea. Annu. Rev. Ecol. Syst. 30: 515-538.

Geller, J.B. 1999. Decline of a native species masked by sibling species invasion: The case of Californian marine mussels. Conservation Biology, 13:661-664.

Bagley, M.J., D.L. Lindquist and J.B. Geller. 1999. Microsatellite variation, effective population size and population genetic structure of vermilion snapper, Rhomboplites aurorubens, off the southeastern United States. Marine Biology 134:609-620.

Geller, J.B. 1998. Molecular ecology of marine invasions: two case studies. Recent New Developments in Marine Biotechnology. Y. LeGal and H. Halvorson (eds.) Plenum

Bagley, M., and Geller, J.B. 1998.Characterization of microsatellite loci in the Vermilion snapper, Rhomboplites aurorubens (Percoidei; Lutjanidae). Molecular Ecology, 7:1089-90.

Geller, J.B. 1998. Molecular studies of marine invertebrate biodiversity: status and prospects. Chapter 18 in Cooksey, K.E. (ed). Molecular Studies of the Sea. Chapman, London.

Geller, J.B., Walton, E., Grosholz., E, and Ruiz, G. 1997. Cryptic invasions of the crab Carcinus detected by molecular phylogeography. Molecular Ecology, 6:256-262.

Reid, D.G. and Geller, J.B. 1997. A new ovoviparous species of Tectarius (Gastropoda: Littorinidae) from Niue, South Pacific, with a molecular phylogeny of the genus. J. Molluscan Studies, 63: 207-233.

Suchanek, T., Geller, J.B., Kreiser, B., and Mitton, J.B. 1997. The distributions of Mytilus trossulus, M. edulis, and M. galloprovincialis in the north Pacific with further notes on hybridization. Biological Bulletin 193:191-195. (1997).

Pierce, R.W., Carlton, J.T., Carlton, D.A., Geller, J.B. 1997. Ballast water as a vector for tintinnid transport. Marine Ecology Progress Series, 149:295-297.

Geller, J.B. 1996. Molecular approaches to the study of marine biological invasions. Pages 119-132, in Ferraris, J., Palumbi, S. (eds.) Molecular approaches to zoology. Wiley.

Geller, J.B. 1994. Sex-specific mitochondrial DNA haplotypes and heteroplasmy in Mytilus trossulus and M. galloprovincialis populations. Molecular Marine Biology and Biotechnology, 3:334-337.

Geller, J.B. 1994. Marine biological invasions as models for dispersal: tracking secondary range extension and introgressive gene flow. CALCoFi Reports, 35:68-72.

Geller, J.B., Carlton, J.T., and Powers, D.A. 1994. PCR-based detection of mtDNA haplotypes of native and invading mussels on the northeastern Pacific coast: latitudinal patterns of invasion. Marine Biology 119: 243-249.

Geller, J.B. and Powers, D.A. 1994. Site-directed mutagenesis with the polymerase chain reaction for identification of sibling species of Mytilus. The Nautilus (Invited Paper, Symposium Volume) Suppl 2:141-144.

Carlton, J.T. and Geller, J.B. 1993.Ecological roulette: the global transport and invasion of nonindigenous marine organisms. Science, 261:78-82.

Geller, J.B., Carlton, J.T., and D.A. Powers. 1992. Interspecific and intrapopulation variation of mitochondrial rDNA in Mytilus spp. Marine Molecular Biology and Biotechnology 2(1): 44-50.

Geller, J.B. 1992. Intrapopulation variation in mitochondrial 16S rDNA in Mytilus. Newsletter of Crustacean Molecular Techniques 3:2. (Invited perspective).

Geller, J.B. 1991. Gastropod grazers and algal colonization on a rocky shore in northern California: the importance of body size of grazers. Journal of Experimental Marine Biology and Ecology 150:1-17.

Geller, J.B. 1990. Consequences of a morphological defense: growth, repair and reproduction of thick and thin shelled morphs of Nucella emarginata (Deshayes) (Prosobranchia: Gastropoda). Journal of Experimental Marine Biology and Ecology 144:173-184.

Geller, J.B. 1990. Reproductive responses to shell damage by the gastropod Nucella emarginata. Journal of Experimental Marine Biology and Ecology 136: 77-87.

Geller, J.B. 1983. A note on shell scar frequency in two northern California gastropods: microhabitat differences. Veliger 26:113-115.

Geller, J.B. 1982. Microstructure of shell repair materials in Tegula funebralis (A. Adams, 1855). Veliger 25:155-159.

Geller, J.B. 1982. Chemically mediated avoidance response of a gastropod, Tegula funebralis (A. Adams), to a predatory crab, Cancer antennarius (Stimpson). Journal of Experimental Marine Biology and Ecology 65:19-27.