LINDSAY, S.M.; JACKSON, J.L.; HE, S.Q.; FOREST, D.; University of Maine, Orono: Losing heads & making connections: anterior regeneration in spionid polychaetes The spionid polychaetes Dipolydora quadrilobata and Pygospio elegans can regenerate lost tails, feeding palps, and anterior segments. Results of anterior ablation experiments indicate the rate of regeneration is slower with increasing amount of […]

MAXMEN, Amy; MARTINDALE, Mark/Q; GIRIBET, Gonzalo; Harvard University; University of Hawaii; Harvard University: Hox Genes in a Basal Group of Euarthropods: Pycnogonida In attempt to understand the underlying mechanisms involved in the evolution of innumerable morphologies, researchers have turned to the Hox genes, a family of transcription factors involved in patterning body segments. The Hox […]

SANTAGATA, Scott; Smithsonian Marine Station: Evolutionary trends in the larval anatomy of the Bryozoa Neuromuscular anatomy and the cytology of the presumptive juvenile tissues of cyclostomate and gymnolaemate bryozoan larvae were investigated with immunohistochemistry, cLSM, SEM, and TEM. Differences in the neuromuscular systems among systematic groups correlate with modifications of swimming and crawling orientations. Ctenostome […]

BROWNE, W.E.; SCHMID, B.G.M.; PATEL, N.H.; WIMMER, E.A.; MARTINDALE, M.Q.; Kewalo Marine Lab, University of Hawaii; Institute of Zoology, Georg-August University Goettingen; HHMI, University of California, Berkeley; Institute of Zoology, Georg-August University Goettingen; Kewalo Marine Lab, University of Hawaii: Developmental Expression of otd Genes and Their Role in Patterning the Embryonic Anterior Head, Anterior Brain, […]

HEJNOL, A.*; SCHNABEL, R.; Technische Universit�t Braunschweig, Spielmannstr. 7, Germany: Comparative developmental studies using 4D-microscopy The development of an organism occurs in space and time and is thus a 4-dimensional process. Here we present a microscope system, originally developed to analyze cell lineage mutants of the nematode Caenorhabditis elegans. This 4D-microscope system (3D-timelapse) can be […]

MEHTA, Rita; MOON, Brad*; UC Davis; University of Louisiana: The Scaling of Constriction Strength Snakes Constriction was probably one of the key innovations that enabled snakes to subdue relatively large prey animals. It involves a snake placing its body around a prey animal and squeezing, which restrains the prey from escaping and defending itself, and […]

KAISER, A.*; KLOK, C.J.; SOCHA, J.; LEE, W.K.; FEZZAA, K.; QUINLAN, M.C.; HARRISON, J.F.; Midwestern University, Glendale, AZ; Arizona State University, Tempe, AZ; Argonne National Laboratory, Argonne, IL; Argonne National Laboratory, Argonne, IL; Argonne National Laboratory, Argonne, IL; Midwestern University, Glendale, AZ; Arizona State University, Tempe, AZ: Structure, function, and allometry of the tracheal system […]

PATEK, Sheila N.*; BAIO, Joseph; SUMMERS, Adam; Univ. of California, Berkeley; Univ. of California, Berkeley; Univ. of California, Irvine: Springs, linkages and latches: a mechanical model of the mantis shrimp�s raptorial appendage Mantis shrimp (Stomatopoda) use a remarkable spring-loaded click mechanism in their raptorial appendages to rapidly capture and process prey. In some mantis shrimp […]

SPAIN, D. D. *; PERALTA, M.; Dominican University of California: Sinking in Sand – An Examination of Burrowing in Sea Cucumbers (Holothuroidea: Echinodermata) There are over 1,400 species of sea cucumbers living in marine environments worldwide. Yet, there are few descriptions of the burrowing process of infaunal holothuroids. This study provides a detailed description of […]

HADDOCK, S.H.D; MBARI: Radiolarian diversity and morphology: structural adaptations to the deep sea Radiolarians are marine protists that form intricate siliceous “skeletons”. Although these forms have drawn attention since the 19th century, currently radiolarians are most familiar to paleontologists and marine geologists who study their sedimented remains. The natural history of living species, especially of […]