Meeting Abstract S2-1.6 Jan. 4 Heads or tails? Amphioxus and the evolution of axial patterning in chordates YU, J-K.; ONAI, T.; HOLLAND, L. Z.*; California Institute of Technology , Univ. California, San Diego; Univ. California, San Diego; Univ. of California, San Diego lzholland@ucsd.edu Within the vertebrates, the mode of gastrulation is highly variable. Consequently, the evolutionary origin […]
sessions: S2-1
Craniofacial evolution from a developmental perspective
Meeting Abstract S2-1.1 Jan. 4 Craniofacial evolution from a developmental perspective KURATANI, Shigeru; Center for Developmental Biology, RIKEN, Kobe, Japan saizo@cdb.riken.jp In the craniofacial development of vertebrates, some developmental stages are conserved across species, representing particular developmental constraints such as the Hox code clearly expressed in pharyngula. By this stage, primarily unsegmented cephalic mesoderm is subdivided by […]
Segmenting the Mosaic Head
Meeting Abstract S2-1.3 Thursday, Jan. 3 Segmenting the Mosaic Head KIMMEL, C. B.*; EBERHART, J. K.; MOENS, C. B.; University of Oregon, Eugene; University of Oregon, Eugene; Fred Hutchinson Cancer Center, Seattle kimmel@uoneuro.uoregon.edu Segmental patterning provides for evolvability, and hence is of great evo devo interest. Two prominent series of segments lie almost in register in the […]
Segmentation of neurogenic placodes
Meeting Abstract S2-1.4 Thursday, Jan. 3 Segmentation of neurogenic placodes SCHLOSSER, Gerhard; Brain Research Institute, University of Bremen, 28334 Bremen, Germany gschloss@uni-bremen.de One of the distinguishing features of the vertebrate head is its branchiomeric segmentation with matching segmental units in pharyngeal endoderm and ectoderm (e.g. neural crest streams, rhombomeres). Here I review briefly how segmentation is established […]
Neuromeres segmentation and trigeminal nerve projections in the developing vertebrate brain
Meeting Abstract S2-1.5 Thursday, Jan. 3 Neuromeres segmentation and trigeminal nerve projections in the developing vertebrate brain MURAKAMI, Yasunori; Ehime University bothrops@sci.ehime-u.ac.jp Vertebrate brains exhibit remarkable diversity in each animal group, reflecting evolutionary changes at the molecular-level developmental program of the nervous system that vertebrates have experienced. We focused on the developmental morphological plan of the brain […]
Neural Crest Segments in Zebrafish
Meeting Abstract S2-1.7 Thursday, Jan. 3 Neural Crest Segments in Zebrafish SCHILLING, T.F.; Univ. of California, Irvine tschilli@uci.edu In the vertebrate head, cranial neural crest (NC) cells migrate from specific segmental levels of the hindbrain to form skeletal elements of the pharyngeal arches, as well as segmentally organized neurons and glia of the peripheral nervous system. Our […]
Head organization and the headtrunk relationship in protochordates problems and prospects
Meeting Abstract S2-1.6 Thursday, Jan. 3 Head organization and the head/trunk relationship in protochordates: problems and prospects LACALLI, T.C.; Univ. of Victoria, Victoria, B.C. lacalli@uvic.ca The fossil record is an invaluable aid for reconstructing the major events of vertebrate evolution. Because there is no comparable record for invertebrate chordates, we have no way of directly testing hypotheses […]
Amphioxus and the Evolution of Head Segmentation
Meeting Abstract S2-1.2 Thursday, Jan. 3 Amphioxus and the Evolution of Head Segmentation HOLLAND, L. Z.*; RASMUSSEN, S. L. K.; BEASTER-JONES, L.; KOOP, D.; Univ. of California at San Diego; Univ. of California at San Diego; Univ. Calif. San Diego, Augustana College; Univ. of California at san Diego lzholland@ucsd.edu In the basal chordate amphioxus (Branchiostoma), all three […]
A Brief History of Theories Regarding Vertebrate Head Organization
Meeting Abstract S2-1.1 Thursday, Jan. 3 A Brief History of Theories Regarding Vertebrate Head Organization NORTHCUTT, R. Glenn; University of California, San Diego rgnorthcutt@ucsd.edu In vertebrate heads, morphology is extremely complex and comprises numerous iterative structures arising from all embryonic germ layers. The search for a fundamental plan uniting these serial structures dates back 200 years. The […]
Twenty-four years in the mud what have we learned about the natural history and ecology of Kryptolebias marmoratus
Meeting Abstract S2-1.1 Wednesday, Jan. 4 Twenty-four years in the mud: what have we learned about the natural history and ecology of Kryptolebias marmoratus? TAYLOR, D. Scott; Brevard County Environmentally Endangered Lands Program scott.taylor@brevardparks.com Although first described in 1880, K. marmoratus avoided scientific scrutiny until 1961, when it was identified as the only known selfing hermaphroditic vertebrate. […]
