HORISAWA, S.; BYRNES, G.T.; DUDLEY, R.; Univ. of California, Berkeley; Univ. of California, Berkeley; Univ. of California, Berkeley: Erratic Flight in Butterflies Palatability of butterflies is correlated with diverse morphological features, flight speeds, and flight trajectories. In particular, palatable butterflies exhibit erratic flight paths which help in evading attack from aerial predators. We determined three-dimensional […]

BERNATIS, JL; MCGAW, IJ; University of Nevada, Las Vegas: Dungeness crabs use behavior to minimize the physiological costs of feeding and digestion in hypoxia The Dungeness crab, Cancer magister, inhabits areas that are frequently subject to periods of hypoxia. These crabs use a variety of physiological mechanisms to survive in these hypoxic conditions. However, this […]

HUSAK, J. F.; LAPPIN, A. K.; Oklahoma State University; Northern Arizona University: A strong bite increases the mating success of collared lizards In territorial, polygynous taxa, individual variation in territory quality and mating success are expected to reflect individual variation in underlying morphological, physiological, and whole-animal performance traits. We studied a highly territorial, polygynous lizard […]

ELLIOTT, Glen RD; Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada: The contractile apparatus of a juvenile freshwater sponge, Ephydatia muelleri Within the metazoa the Porifera is the only phylum that lacks a nervous and muscular system. Nevertheless, freshwater demosponges have a coordinated behaviour that is very like a slow sneeze: in response […]

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 […]

PRICE, A.L.; PATEL, N.H.; University of Chicago, Illinois; Univ. of California, Berkeley: With or without you…The role of mesoderm in ectoderm segmentation in crustaceans The segmental characteristics of the ectoderm and mesoderm as well as the proximity of the germ layers during morphogenesis suggests that signaling may be required between these two layers for proper […]