Bacterial chemotaxis, the movement of motile bacteria toward or away from chemicals, was discovered nearly a century ago by Engelmann (1) and Pfeffer (2,3). The subject was actively studied for about 50 years, but then there were very few reports until quite recently. For reviews of the literature up to about 1960, see Berg (4), Weibull (5), and Ziegler (6). The present review will restrict its...

Em. 118: 85-88 (1986) In the absence of secondary attraction, 2 species of Scolytidae, Zps l&dens (L.eConte) and Hylastes gracilis LeConte, showed significant preference while in flight for highgirdled over non-girdled lodgepole pines, Pinus contorta var. Zutifoliu Engelmann. In contrast, beetles in 2 genera of Elateridae, Ampedus and Ctenicera, showed significant preference for non-girdled ove...

treatments with secretion of female accessory gland and micropyle cap substance. Int. J. Insect Morphol. Embryol. 14, 381391. Engelmann, F. (1970). The Physiology of Insect Reproduction. Pergamon, New York. Gillett, C. 0 988). Arthropoda-Insecta. In Reproductive Biology of invertebrates. Vol III. Accessory Sex Glands. (K. G. and R. G. Adiyodi, Eds.), pp. 319-471. Wiley, New York. Gillott, C. (1...

Boresch, K., Zts. Bot., 13, 65-78 (1921). Emerson, R., and Arnold, W., Jour. Gen. Physiol., 16, 191-205 (1932). Engelmann, Th. W., Bot. Ztg., 41, 1-13 (1883). Gaidukov, N., Anhang Abhandl. preuss. Akad. Wiss., 1-36 (1902). Harder, R., Ber. deutsch. bot. Ges., 40, 26-32 (1922). Harder, R., Zts. Bot., 15, 305-355 (1923). Oltmanns, Fr., Jahrb. wiss. Bot., 23, 349-440 (1893). v. Richter, A., Ber. d...

Various skeletal dysplas ias known to produce c ranial hyperostosis include osteopetrosis, c rani ometaphyseal dysplas ia, hereditary hyperphosphatasia, Van Buchem disease, and Engelmann disease [1]. Neurologic compl ications such as optic atrophy, facial paralysis, or deafn ess may result from progressive encroachment on the cranial foramina due to bony overgrowth at the base of the skull . Na...

We report the progressive otic capsule demineralization around the membranous labyrinth and facial nerve in an adult patient with osteogenesis imperfecta tarda. Whereas the initial CT scan showed bandlike, undermineralized pericochlear areas, 2 years later, repeat CT performed because of hearing deterioration showed progression of these findings to the promontory, the round window niche, and th...

3" Anil Raj, Sidney H. Wang, Heejung Shim, Arbel Harpak, 4" Yang I. Li, Brett Engelmann, Matthew Stephens, Yoav Gilad, 5" Jonathan K. Pritchard " 6" " 7" Department of Genetics, Stanford University, Stanford, CA" 8" Department of Human Genetics, University of Chicago, Chicago, IL" 9" Department of Statistics, University of Chicago, Chicago, IL" 10" Department of Biology, Stanford University, St...

Due to the shifting global climate, frequency and severity of disturbances are increasing, inevitably causing an increase in overlapping time space. Bark beetle epidemics wildfires have historically shaped disturbance regimes Western North American forests. Their interactive effects on stand dynamics recovery inadequately studied Picea engelmannii (Engelmann spruce)-Abies lasiocarpa (subalpine ...