Selected Publications

Deuterostome Phylogenies and the Evolution of the Chordates

Swalla, B.J., Cameron, C.B., Corley, L.S. and Garey, J.R. (2000) Urochordates are monophyletic within the deuterostomes. Systematic Biology 49: 122-134. (Online)

Cameron, C.B., Garey, J.R. and Swalla, B. J. (2000) Evolution of the chordate body plan: New insights from phylogenetic analyses of deuterostome phyla. Proc. Natl. Acad. Sci. 97: 4469-4474. (Online)

Riemer, D., Wang, J, Zimek, A., Swalla, B. J. and Weber, K. (2000) Tunicates have unusual nuclear lamins with a large deletion in the carboxyterminal tail domain. Gene 255: 317-325. (Online)

Winchell, C.J., Sullivan, J., Cameron, C.B., Swalla, B. J. and Mallatt, J. (2002) Evaluating hypotheses of deuterostome phylogeny and chordate evolution with new LSU and SSU ribosomal DNA data. Mol. Giol. and Evol. 19:762-776. (Online)

Swalla, B. J. (2006) Building divergent body plans with similar genetic pathways. Heredity 97: 235-243. (Online)

Swalla, B. J. and Smith, A.B. (2008) Deciphering Deuterostome Phylogeny: Molecular, morphological and palaeontological perspectives. Phil. Trans. R. Soc. B 363: 1557-1568. (Online)

Brown, F.D., Prendergast, A. and Swalla, B.J. (2008) Man is but a worm: Chordate Origins Genesis 46: 605-613.

Hemichordate Evolution

Smith, S.E., Douglas, R., Burke da Silva, K., and Swalla, B.J. (2003) Morphological and molecular identification of Saccoglossus species (Hemichordata: Harrimaniidae) in the Pacific Northwest. Can. J. Zool 81: 133-141. (Online)

Rychel, A. L., Smith, S. E., Shimamoto, H. T. and Swalla, B. J. (2006) Evolution and Development of the Chordates: Collagen and Pharyngeal Cartilage. Mol. Biol. Evol. 23 (2): 1-9. (Online)

Rychel, A. L. and Swalla, B. J. (2007) Development and evolution of chordate cartilage. J. Exp. Zoolog. B Mol. Dev. Evol. 308B: 325-335. (Online)

Rychel, A. L. and Swalla, B. J. (2008) Anterior regeneration in the hemichordate, Ptychodera flava. Develop. Dyn. 237 (11): 3222-3232.

Cannon, J.T., Rychel, A.L., Blasczyk, H., Halanych, K.M. and Swalla, B.J. (2009) Molecular phylogeny of Hemichordata Mol. Phylo. Evolution 52: 1724.

Invertebrate Stem Cells and Regeneration

Brown, F.D., Tiozzo, S., Roux, M.M., Ishizuka, K., Swalla, B.J., and De Tomaso A. W. (2009) Early lineage specification of long-lived germline precursors in the colonial ascidian, Botryllus schlosseri Development 136: 3485-3494.

Brown, F.D., Keeling, E.L., Le, A.D. and Swalla, B.J. (2009) Whole body regeneration in a colonial ascidian, Botrylloides violaceus. J. Exp. Zoolog. B Mol. Dev. Evol. 312B (8): 885-900.

Rychel, A.L. and Swalla, B.J. (2009) Stem cells and regeneration in hemichordates. In: Marine Stem Cells, Valeria Matranga and Baruch Rinkevich, ed. Springer Publishing. pp. 245-265.

Manx/Bobcat Gene Complex and the Evolution Of Tailless Ascidians

Swalla, B.J. and Jeffery, W.R. (1996) Requirement of the manx gene for expression of chordate features in a tailless ascidian larva. Science 274:1205-1209. (Online)

Swalla, B.J.,Pederson, E.L., Just M.L. and Jeffery, W.R. (1999) Manx/Bobcat gene complex and the evolution of tailless ascidians: A multigene locus containing the manx and bobcat genes is required for development of chordate features in the ascidian tadpole larva. Development 126:1643-1653. (Online)

Huber, J.L., Burke da Silva, K., Bates, W.R. and Swalla, B.J. (2000) The evolution of anural larvae in molgulid ascidians. Seminars in Develop. Biol., 11:419-426. (Online)

Takada, N., York, J., Davis, J.M., Schumpert, B., Yasuo, H., Satoh, N. and Swalla, B.J. (2002) Brachyury expression in tailless molgulid ascidian embryos. Evolution and Development 4:3, 205-211.

Takada, N., Satoh, N. and Swalla, B.J. (2002) Expression of Tbx-6, a muscle lineage T-box gene, in the tailless embryo of the ascidian Molgula tectiformis. Dev. Genes Evol. 212: 354-356.

Gyoja, F., Satou, Y., Shin-i, T., Kohara, Y., Swalla, B.J., Satoh, N. (2007) Analysis of large scale expression sequenced tags (ESTs) from the anural ascidian, Molgula tectiformis. Develop. Biol. 307(2):460-482.

Shenkar, N. and Swalla, B.J. (2010) Molecular data confirms synonomy of Roscovite molgulid ascidians. Cah. Biol. Mar. 51: 85-87.

Lambert G., Shenkar, N. and Swalla B.J. (2010) First Pacific record of the north Atlantic ascidian Molgula citrina - bioinvasion or circumpolar distribution? Aquatic Invasions. 5(4): 369-378. (Online)

Mechanisms of Ascidian Metamorphosis

Davidson, B. and Swalla, B.J. (2002) A molecular analysis of ascidian metamorphosis reveals activation of an innate immune response. Development 129: 4739-4751. (Online)

Davidson, B., Smith Wallace, S.E., Howsmon, R.A. and Swalla, B.J. (2003) A morphological and genetic characterization of metamorphosis in the ascidian Boltenia villosa. Dev. Genes Evol. 123: 601-611. (Online)

Davidson, B., Jacobs, M. and Swalla, B.J. (2004) The individual as a module: Metazoan evolution and coloniality. In: Modularity in Development and Evolution. Gerhard Schlosser and Günter Wagner, eds. University of Chicago Press. pp 443-465.

Roberts, B., Davidson, B., MacMaster, G., Ma, E., Smith Wallace S., Lockhart, V. and Swalla B. J. (2007) A complement response may activate metamorphosis in the ascidian Boltenia villosa. Dev. Genes & Evol. 217(6): 449-458. (Online)

Review Articles

Swalla, B. J. (2001) Phylogeny of the urochordates: Implications for chordate evolution. In: The Biology of Ascidians; H. Sawada, H. Yokosawa and C. Lambert, eds.; Springer Verlag, Tokyo. pp 219-224.

Swalla, B. J. (2004) Protochordate Gastrulation: Lancelets and Ascidians. In: Gastrulation; Claudio Stern, ed. Cold Spring Harbor Press. pp 139-149

Swalla, B. J. (2004) Procurement and Culture of Ascidian Embryos. In: Methods in Cell Biology: Experimental Analysis of the Development of Sea Urchins and Other Non-Vertebrate Deuterostomes. Chuck Ettenson, Gary Wessell and Greg Wray, ed. Elsevier Science/ Academic Press pp 115-141.

Swalla, B. J. (2007) New insights into vertebrate origins. In: Principles of Developmental Genetics, Sally Moody, ed. Elsevier Press (San Diego, Elsevier) pp. 114-128.