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31.
Clarence Madhosingh Winson Orr 《Journal of environmental science and health. Part. B》2013,48(4-5):491-499
Abstract Biodegradation of the fatty acylamino acids by Fusarium culmorum, measured in terms of the release of radioactive aspartate and lysine, occurred maximally at pH 6.5 and pH 7.0, respectively in 10 day cultures. Thirty‐six percent and twenty‐four percent of the total radioactivity recovered were in released aspartate and lysine, respectivley at 30°C. Twenty degrees (C) was the minimum temperature for biodegradation of these compounds by F. culmorum. Greater degradation was observed at 15°C and 30°C. The data suggest the activity of hydrolytic isoenzymes, with optima at different pH's and temperatures, operating in the biodegradation process. 相似文献
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David W. Orr 《Conservation biology》2002,16(2):288-290
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The Problem of Disciplines/The Discipline of Problems 总被引:1,自引:0,他引:1
David W. Orr 《Conservation biology》1993,7(1):10-12
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The Psychology of Survival 总被引:1,自引:0,他引:1
David W. Orr 《Conservation biology》2008,22(4):819-822
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Elizabeth J. Cook Richard Shucksmith Heather Orr Gail V. Ashton Jørgen Berge 《Marine Biology》2010,157(1):19-27
The invasive caprellid amphipod Caprella mutica is one of the most widely dispersed marine non-native species globally. Originating in sub-boreal north-east Asia, it has
now been found in both the northern and the southern hemispheres. One potential reason why this species is such a successful
invader is its ability to utilise a wide variety of food sources. The contribution of different food sources to the diet of
C. mutica was estimated using fatty acids as biomarkers. Caprella mutica was collected from three field sites, including sea cages stocked with Atlantic salmon Salmo salar, shellfish longlines stocked with the blue mussel Mytilus edulis and mooring lines marking the Loch Linnhe Artificial Reef (>2 km from caged finfish aquaculture), where established populations
of this species are known to occur. In addition, the fatty acid compositions of C. mutica held in aquaria and either fed the microalga, Dunaliella tertiolecta, or the diatom, Phaeodactylum
tricornutum, for a period of 21 days were investigated. The fatty acid composition of the diatom and the microalgal diets was also examined.
The results showed that C. mutica contained high levels of polyunsaturated fatty acids, particularly 20:5(n-3); other dominant fatty acids included 18:1(n-9),
22:6(n-3) and 16:0 (in decreasing order based on abundance). Significant differences in the fatty acid profiles between caprellids
fed on the microalgae and the diatom diets and between C. mutica collected from the field sites were observed. These results provide evidence that lipid biomarkers can be successfully used
to provide evidence of feeding strategy for C. mutica and that the flexibility observed in this strategy may play an important role in its invasion success. 相似文献
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