MARTINDALE, M.Q.; FREEMAN, G.; Univ. of Hawaii, Honolulu; Univ. of Texase, Austin: The origin of mesoderm in phoronids. A large number of metazoan phyla (e.g. mollusks, annelids, nemerteans, sipunculids, echiurans) display a highly stereotyped pattern of early development called spiral cleavage. The conservation of the spiralian developmental program allows embryologists to identify homologous cells in […]
sessions: S1-2
Polychaete nervous systems Ground pattern and variation
M�LLER, MCM*; Universit�t Osnabr�ck, Germany: Polychaete nervous systems: Ground pattern and variation In Annelida as well as in other invertebrate taxa the nervous system is considered to be a most conservative organ system. According to the Articulata-hypothesis the specific structure of the rope-ladder-like nervous system is an autapomorphic character that unifies Annelida and Arthropoda. Immunhistochemical […]
Hidden trochophore in nemertean development revealed by confocal microscopy and cell lineage analysis
MASLAKOVA, S; MARTINDALE, M; NORENBURG, J; George Washington Univ., Washington DC; University of Hawaii, Honolulu, HI; NMNH, Smithsonian Institution, Washington DC: Hidden trochophore in nemertean development revealed by confocal microscopy and cell lineage analysis Nemerteans belong to the protostome clade the Trochozoa, which includes annelids, mollusks, sipunculids, echiurids and entoprocts. All trochozoan phyla, except nemerteans […]
Comparative studies of gastropod development insights into the evolution of a novel body plan
PAGE, L.R.; University of Victoria, B.C., Canada: Comparative studies of gastropod development: insights into the evolution of a novel body plan A fundamentally important problem in Biology is to understand how new body plans originate during evolution. Insights into this central issue of evolutionary biology will come from studies on the organization of development. We […]
Thrust augmentation confirmed in self-propelled, tandem flapping foil robots by foil-wake interaction
Meeting Abstract S1-2.5 Jan. 4 Thrust augmentation confirmed in self-propelled, tandem flapping foil robots by foil-wake interaction ANDERSON, E.J.*; LAUDER, G.V.; Harvard University eanderson@oeb.harvard.edu The question of energy �recapture� from the wake of upstream structures or fins of swimming fish by downstream fins has been discussed from a theoretical perspective for many decades. The phenomenon is difficult […]
Sensing moving fluid Hydroreception in the lateral line system of zebrafish
Meeting Abstract S1-2.7 Jan. 4 Sensing moving fluid: Hydroreception in the lateral line system of zebrafish MCHENRY, M.J.*; STROTHER, J.A.; VAN TRUMP, W.J.; NETTEN, VAN, S.M.; U.C. Irvine; U.C. Irvine; U.C. Irvine; Univ. of Groningen, NL mmchenry@uci.edu Fish sense water flow with numerous microscopic structures on the surface of their skin. These structures, known as superficial neuromasts […]
Reactive Forces in Undulatory Swimming, with Reference to the Common Garter Snake (Thamnophis sirtalis)
Meeting Abstract S1-2.4 Jan. 4 Reactive Forces in Undulatory Swimming, with Reference to the Common Garter Snake (Thamnophis sirtalis) MUNK, Y.; Univ. of California, Berkeley yonatanmunk@berkeley.edu Classical studies of the swimming of long and narrow animals have treated anguilliform propulsion as driven largely by resistive (drag-based) forces acting on the body, with �reactive� forces (resulting from the […]
Position Around a Tree Consequences for Pheromone Detection
Meeting Abstract S1-2.10 Jan. 4 Position Around a Tree: Consequences for Pheromone Detection LOUDON, C.*; MILLER, G. L.; FREED, S.; University of California, Irvine cloudon@uci.edu The usual flow pattern expected around a cylindrical object such as a tree in slow wind is predicted from fluid mechanics to have areas of faster flow (upwind) and slower recirculating flow […]
Morphology to Performance to Fitness Biomechanics and Ecology Predict Evolutionary Divergence in a Livebearing Fish
Meeting Abstract S1-2.2 Jan. 4 Morphology to Performance to Fitness: Biomechanics and Ecology Predict Evolutionary Divergence in a Livebearing Fish LANGERHANS, R.B.; Harvard University langerhans@oeb.harvard.edu To examine whether evolutionary outcomes can be predicted from first principles, I test predictions of phenotypic evolution based on biomechanical and ecological knowledge regarding the relationships between body morphology, swimming performance, and […]
Hydrodynamic imaging by blind cave fish
Meeting Abstract S1-2.8 Jan. 4 Hydrodynamic imaging by blind cave fish WINDSOR, S.P.**; MALLINSON, G.D.; MONTGOMERY, J.C.; Univ. of Auckland; Univ. of Auckland; Univ. of Auckland s.windsor@auckland.ac.nz The hypogean (cave-dwelling) form of the fresh water teleost Astyanax fasciatus, commonly known as the blind Mexican cave fish, occurs in deep subterranean caves where there is no light. In […]
