Zobrazeno 1 - 10
of 69
pro vyhledávání: '"A. D. Blest"'
Autor:
Michael F. Land, Dan-E Nilsson, Eric J. Warrant, David C. O'Carroll, Marie Dacke, A. D. Blest
Publikováno v:
Nature. 401:470-473
Some insects and vertebrates use the pattern of polarized light in the sky as an optical compass1,2,3,4,5. Only a small section of clear sky needs to be visible for bees and ants to obtain a compass bearing for accurate navigation5,6. The receptors i
Autor:
Sally Stowe, A. D. Blest
Publikováno v:
Journal of Comparative Physiology A: Sensory, Neural, and Behavioral Physiology. 180:347-355
(1) In vitro retinas of a crab, Leptograpsus, were treated with a phospholipase inhibitor, manoalide, or a G-protein activator, Mas-7. Both drugs address early stages of the phototransduction cascade. (2) Manoalide inhibited the light-dependent reduc
Autor:
P. W. Taylor, A. D. Blest
Publikováno v:
New Zealand Journal of Zoology. 22:351-356
A new species of Stiphidiid spider belonging to the endemic New Zealand genus Cambridgea is described from Riccarton Bush, Christchurch and Kaituna Valley, Banks Peninsula. Cambridgea quadromaculata n. sp. is large, active, and apparently makes no su
Autor:
N J, Strausfeld, A D, Blest
Publikováno v:
Philosophical transactions of the Royal Society of London. Series B, Biological sciences. 258(820)
Variants of the Golgi-Colonnier (1964) selective silver procedure have been used to show up neurons in insect brains. Neural elements are particularly clearly impregnated in the optic lobes. Three classes of nerve cells can be distinguished; perpendi
Publikováno v:
Visual Neuroscience. 7:35-48
Retinae of the crabLeptograpsuswhich had been maintained on a 12-h light/12-h dark cycle were culturedin vitroand exposed to 1 μM okadaic acid (OKA) at 0.75 h before light onset. Control retinae were subjected to the same routine and sampled at the
Publikováno v:
Cell and Tissue Research. 262:445-460
Previous work has shown that the mosaics of Layer I receptive segments in the tiered principal (AM) retinae of most jumping spiders (Salticidae) are organised as regular arrays of light guides which are competent to sustain fine visual discrimination
Publikováno v:
Journal of Comparative Physiology A. 175
1. We have previously shown that the regrowth of R1-6 rhabdoms of a crab, Leptograpsus, in darkness after brief illumination is enhanced by an inhibitor of diacylglycerol lipases, U-57908 2. We now show that the effects of U-57908 are blocked by a sp
Publikováno v:
Journal of Comparative Physiology A. 174
1. A previous study implies that diacylglycerols (DAGs) released by the phototransduction cascade in photoreceptors of a crab, Leptograpsus, activate protein kinase Cs (PKCs). PKCs were suggested to phosphorylate nuclear proteins that regulate the tr
Publikováno v:
Journal of Comparative Physiology A. 173
1. Arthropod phototransduction cascades release diacylglycerols (DAGs). We have suggested that DAGs may activate protein kinase Cs (PKCs) to induce phosphorylations of proteins that regulate nuclear transcriptions of rhabdomeral membrane precursors d
Publikováno v:
Journal of comparative physiology. A, Sensory, neural, and behavioral physiology. 170(2)
1. Retinae of crabs, Leptograpsus variegatus, held on a 12:12 h light-dark cycle were prepared for culture in vitro shortly before light-off. After an hour in darkness to permit the assembly of “night” rhabdoms, retinae were exposed to various co