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C. W. SCHAEFER W. R. DOLLING S. TACHIKAWA 《Zoological Journal of the Linnean Society》1988,93(4):283-311
A new hemipteran subfamily, Parastrachiinae , is proposed in the Cydnidae for the single genus Parastrachia Distant 1883. There are two included species, P. japonensis (Scott 1880) and P. nagaensis Distant 1908. The morphology, relationships, and taxonomic history of Parastrachia are discussed 相似文献
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SYNOPSIS. The glucose transport system in Leishmania tropica promastigotes was characterized by the use of labeled 2-deoxy-D-glucose (2-DOG), a nonmetabolizable glucose analog. The uptake system has a Q10 of 2 and a heat of activation of 10.2 kcal/mole. The glucose transport system is subject to competitive inhibition by 2-DOG, glucosamine, N-acetyl glucosamine, mannose, galactose, and fructose which suggests that substitutions in the hexose chain at carbons 2 and 4 do not affect carrier specificity. In contrast, changes at carbon 1 (α-methyl-D-glucoside, 1,5-anhydroglucitol) and carbon 3 (3–0-methyl glucose) lead to loss of carrier affinity since these sugars do not compete for the glucose carrier. Sugars that compete with the glucose carrier have one common feature—they all exist in the pyranose form in solution. The carrier for D-glucose does not interact with L-glucose or any of the pentose sugars tested. Uptake of 2-DOG is inhibited by glycerol. This inhibition, however, is noncompetitive; it is evident, therefore, that glucose and glycerol do not compete for the same carrier. Glycerol does not repress the glucose carrier since cells grown in presence of glycerol transport the sugar normally. 相似文献
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The food plants and life cycle of Lymantria bantaizana were investigated in Iwate Prefecture, northern Honshu, Japan from 2000 to 2002. Eggs laid in July hatched approximately 10 days after oviposition. Hatched larvae fed only on Juglandaceae, Juglans mandshurica var. sachaliensis, J. regia var. orientalis and Pterocarya rhoifolia when reared in the laboratory. In field rearing, the plants of Juglans enabled the moth to complete its life cycle. Differing from all other known Lymantria species in Japan, the moth overwintered not in the egg stage but in the fifth or sixth instar larval stage. Lymantria bantaizana had eight larval instars in both sexes. Moth emergence occurred mostly in July at a field‐trapping site in Iwate Prefecture. 相似文献
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Seven years of recent European net terrestrial carbon dioxide exchange constrained by atmospheric observations 总被引:1,自引:0,他引:1
W. PETERS M. C. KROL G. R. Van Der WERF S. HOUWELING C. D. JONES J. HUGHES K. SCHAEFER K. A. MASARIE A. R. JACOBSON J. B. MILLER C. H. CHO M. RAMONET M. SCHMIDT L. CIATTAGLIA F. APADULA D. HELTAI F. MEINHARDT A. G. DI SARRA S. PIACENTINO D. SFERLAZZO T. AALTO J. HATAKKA J. STRÖM L. HASZPRA H. A. J. MEIJER S. VAN DER LAAN R. E. M. NEUBERT A. JORDAN X. RODÓ J.‐A. MORGUÍ A. T. VERMEULEN E. POPA K. ROZANSKI M. ZIMNOCH A. C. MANNING M. LEUENBERGER C. UGLIETTI A. J. DOLMAN P. CIAIS M. HEIMANN P. P. TANS 《Global Change Biology》2010,16(4):1317-1337
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