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GORDON GORDH 《Australian Journal of Entomology》1994,33(4):398-398
Proceedings of the 8th International Symposium on Insect-plant Relationships. S. B. J. Menken, J. H. Visser and P. Harrewijn (Eds). 相似文献
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DEREK WALTON GORDON B. CURRY 《Lethaia: An International Journal of Palaeontology and Stratigraphy》1994,27(2):179-184
A new protocol for the extraction and analysis of intracrystalline macromolecules has been developed that allows the rapid determination of the amino-acid composition of fossils. The technique utilizes decalcification with 2 M HCI, characterization of the soluble fraction of the biomolecules by automated amino-acid analysis, and differentiation using multivariate statistics. Compared to other methods, this technique allows sampling of indigenous degraded proteins in addition to the preserved remains of peptides, leading to the recovery of data from more reliable indigenous sources. Although the extraction method is demonstrated using fossil samples to demonstrate gross phylogenetic differences, there is much potential to use these biomolecules for a wide range of applications. □ Amino acids, brachiopods, fossil biomolecules, molecular phylogeny. 相似文献
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Locating genotypes and genes for abiotic stress tolerance in barley: a strategy using maps, markers and the wild species 总被引:4,自引:1,他引:3
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Gibberellin-like substances and inhibitors present in extractsof runner buds, and unfolding and mature leaves of strawberryhave been fractionated and compared. The runner-bud water-solubleresidue was more strongly inhibitory than that from unfoldingand mature leaves. The crude acid fraction from unfolding andmature leaves contained appreciable amounts of an inhibitor,probably abscisic acid, which was not detected in the buds.The unfolding leaves had a higher concentration of acidic gibberellin-likesubstances than either buds or mature leaves; they also containeda number of neutral gibberellin-like substances. Mature leaveshad a low concentration of gibberellin-like substances, allof which were acidic. A number of these were highly non-polartypes, not found in the buds or unfolding leaves. 相似文献
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Surveillance of biting midges (Culicoides spp.) in Northern Ireland: influence of seasonality,surrounding habitat and livestock housing
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S. JESS G. M. THOMPSON S. CLAWSON I. W. N. FORSYTHE I. REA A. W. GORDON A. K. MURCHIE 《Medical and veterinary entomology》2018,32(1):48-60
Biting midges, Culicoides spp. (Diptera: Ceratopogonidae), are important vectors of viral pathogens. Following the outbreak of bluetongue serotype 8 in Europe between 2006 and 2009, many Culicoides surveillance programmes were initiated to identify vector‐active periods, in accordance with European Commission regulation 2007/1266/EC. This study utilized surveillance data from 4 years of continuous light‐trapping at 14 sites in Northern Ireland. The number of captured Culicoides varied from none during the vector‐free period (December–April) to more than 36 000 per night during peak activity in the summer. The Obsoletus group represented 75% of Culicoides collected and the Pulicaris group represented 21%. A total of 91% of Culicoides were female, of which 42% were parous. Abundance data, sex ratios and parous rates suggested that both the Obsoletus and Pulicaris groups underwent three generations/year. The Obsoletus group was associated with cattle‐rearing habitats and woodland, the Impunctatus group was found in habitats related to sheep rearing and the Pulicaris group were associated with both cattle and sheep. Housing did not reduce incursion of female Obsoletus group Culicoides but it did for males and for the Pulicaris group Culicoides. The influence of housing was strongly affected by time of year, probably reflecting the presence of livestock indoors/outdoors. 相似文献
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