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Nichole Hines Janet B Payeur Lorraine J Hoffman 《Journal of veterinary diagnostic investigation》2006,18(3):243-250
The BACTEC Microbacteria Growth Indicator Tube (MGIT) 960 system was evaluated to determine how it compares with the BACTEC 460 radiometric system and solid media for recovery of Mycobacterium bovis from tissue samples. A total of 506 bovine lymph node samples were collected from abattoirs in the United States and Mexico between November 2003 and September 2004. Processed samples were inoculated into an MGIT 960 tube, BACTEC 460 vial, and Middlebrook 7H10 and Middlebrook 7H11 solid media. Ziehl-Neelsen slides were prepared to check for contaminants and confirm the presence of acid-fast positive bacilli. Samples containing acid-fast bacilli were confirmed as members of the Mycobacterium tuberculosis complex by a nucleic acid assay. Niacin and nitrate biochemical tests were used to distinguish M. bovis from M. tuberculosis isolates. Statistical analyses were performed to compare recovery rate, mean time to detection, contamination rates, as well as pair-wise comparisons in each category. The results showed that the MGIT 960 system had a higher recovery rate of M. bovis (122/129) than did the BACTEC 460 (102/129) and solid media system (96/129). The average time to detection was 15.8 days for the MGIT 960 system, 28.2 days for the BACTEC 460 system, and 43.4 days for solid media. Contamination rates were 6.9% for the MGIT 960 system, 3.4% for the BACTEC 460 system, and 21.7% for solid media. These results indicate the MGIT 960 system can be used as an alternative to the BACTEC 460 system for recovering M. bovis from tissue samples. 相似文献
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The political ecology of gear bans in two fisheries: Florida's net ban and Alaska's Salmon wars 
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下载免费PDF全文 Philip A Loring 《Fish and Fisheries》2017,18(1):94-104
Parametric management in fisheries, which describes the management of how, where and when fishing occurs, is often essential for achieving sustainability. Changes to these parameters likely have impacts on stakeholders, however, for example through the costs and allocative consequences of spatial restrictions or gear changes. Here, I discuss two cases where gear bans have been implemented or proposed in response to conservation concerns: the commercial net ban enacted in Florida in 1995 and the failed ban on set gill‐nets in parts of Alaska. The two cases are remarkably similar, although the outcomes were quite different because of the social context of each fishery. Lessons from the Florida ban, which resulted in numerous negative social and ecological impacts, are informative regarding the impacts that likely would have accompanied the Alaska ban, had it proceeded. In both cases, the gear bans have had or were poised to have notable impacts on allocation, but scientific evidence for their necessity was limited. These cases show how ethical considerations can be inseparable from the ecological aspects of managing fisheries, and that when communities grapple with the sustainability of fisheries, they are simultaneously seeking to define the socially acceptable uses of those resources. I suggest a set of questions that can be asked when proposing parametric changes to fisheries, including how those changes will impact social well‐being and community resilience. These are questions that I argue must be addressed if both ethical and sustainable fisheries are the goal. 相似文献
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Erin J. Questad Bryan L. Foster Suneeti Jog Kelly Kindscher Hillary Loring 《Biological conservation》2011,(3):1050-1058
Market and policy incentives that encourage agricultural intensification, such as incentives for bioenergy, may contribute to biodiversity decline when they encourage a large-scale conversion of native and semi-natural ecosystems to production fields. In order to appreciate the impact of these incentives on biodiversity, it is imperative to better understand how native and semi-natural ecosystems contribute to plant diversity and composition. We studied the five most common types of managed grasslands in Northeastern Kansas, a region undergoing agricultural intensification. We analyzed plant community data recorded at three spatial scales in 98 managed grassland sites, and examined patterns of diversity and composition of plant species and functional groups; and spatial turnover of species and functional groups measured at different spatial scales. We found reduced soil quality and plant diversity as well as a lack of scale-dependent community patterns on sites that were historically cultivated. Forage management practices (haying or grazing) altered plant diversity and composition in native grassland remnants but not in non-native grasslands. We identified several opportunities where changes to existing management practices could benefit both conservation and bioenergy production objectives. Recommendations to conserve biodiversity include increasing the use of hay management or other biomass collection on native grassland remnants and improving the Conservation Reserve Program by increasing enrollment, adding more native species to seed mixes, and incorporating a periodic biomass collection. We also found that using measures of spatial turnover in community composition added important insights in understanding the effects of management decisions on biodiversity. 相似文献
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Kieren Maddern Vicki J Adams† Nichole AT Hill‡ & Elizabeth A Leece 《Veterinary anaesthesia and analgesia》2010,37(1):7-13
ObjectiveTo determine in dogs the effects of medetomidine and butorphanol, alone and in combination, on the induction dose of alfaxalone and to describe the induction and intubation conditions.Study designProspective, randomized, blinded clinical trial.AnimalsEighty-five client-owned dogs (ASA 1 or 2).MethodsSubjects were block randomized to treatment group according to temperament. The treatment groups were: medetomidine 4 μg kg?1 (M), butorphanol 0.1 mg kg?1 (B), or a combination of both (MB), all administered intramuscularly. After 30 minutes, a sedation score was assigned, and alfaxalone 0.5 mg kg?1 was administered intravenously over 60 seconds by an observer who was unaware of treatment group. Tracheal intubation conditions were assessed and, if tracheal intubation was not possible after 20 seconds, further boluses of 0.2 mg kg?1 were given every 20 seconds until intubation was achieved. Induction dose and adverse events (sneezing, twitching, paddling, excitement, apnoea and cyanosis) were recorded; induction quality and intubation conditions were scored and recorded.ResultsThe mean dose of alfaxalone required for induction was similar for groups M and B: 1.2 ± 0.4 mg kg?1. The mean dose requirement for group MB (0.8 ± 0.3 mg kg?1) was lower than groups M and B (p < 0.0001). Induction dose was not influenced by temperament or level of sedation. Induction and intubation scores did not differ between treatment groups. Adverse events were noted in 16 dogs; there was no association with treatment group, temperament or level of sedation.Conclusions and clinical relevanceMedetomidine and butorphanol administered in combination reduce the anaesthetic induction dose of alfaxalone compared to either agent alone. This difference should be taken into account when using this combination of drugs in a clinical setting. 相似文献
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Nicole Loring 《Asia Pacific viewpoint》2018,59(1):74-86
Myanmar's 2015 elections have been credited with bringing about a myriad of changes within the country. Much has been written about the changing political climate within Myanmar. One topic which has not yet been discussed adequately, however, is the role of Burmese women in these recent elections. This paper seeks to examine women's political participation in Myanmar's recent move towards democratisation. Using rates of female candidacies in Burmese elections, comparing these figures with rates of female participation in other Southeast Asian countries, and ethnographic research with the Burmese voting public, this paper will contribute to the sparse scholarship regarding the role of women in new democracies and regime transitions. This paper finds that beliefs about traditional gender roles, rooted in traditional Buddhism, still shape the way both men and women in Myanmar view women's political participation. While women are better represented in Myanmar's government than they were in the past, this paper suggests that measures such as quotas or reserved seats based on gender may be the best way to increase Burmese women's political representation in the future. 相似文献
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Control of blue mold (Penicillium expansum) by fludioxonil in apples (cv Empire) under controlled atmosphere and cold storage conditions 总被引：2，自引：0，他引：2
Errampalli D Northover J Skog L Brubacher NR Collucci CA 《Pest management science》2005,61(6):591-596
A reduced risk fungicide, fludioxonil, was tested for its efficacy against blue mold caused by thiabendazole-resistant and -sensitive Penicillium expansum (Link) Thom in apples under three storage conditions. In a co-treatment, fludioxonil and inoculum were applied together to test the protective activity of the fungicide on wounds that had been aged for 1 or 2 days. The fungicide was also tested for its curative activity in post-inoculation treatment on apples that had been inoculated for 1 or 2 days. Fludioxonil was very effective as co-treatment and as post-inoculation treatment. At a concentration of 300 mg litre(-1), fludioxonil gave complete control of post-harvest blue mold caused by the thiabendazole-resistant and -sensitive P expansum for 105 days in controlled atmosphere (CA) storage at 2 (+/-1) degrees C, for 42 days in common cold storage at 4 (+/-1) degrees C and also in a shelf-life study for 6 days at 20 (+/-1) degrees C. Comparison on the effect of fludioxonil in CA storage and common cold storage showed that higher concentrations of fungicide were needed in cold storage than in CA storage. Fludioxonil at a concentration of 450 mg litre(-1), gave 98 and 92% control of blue mold of apples in the simulated shelf-life studies after CA and common cold storages, respectively. Fludioxonil has a potential to be incorporated in the fungicide resistance management strategies for control of blue mold in apples stored for 105 days. 相似文献
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Radtke CL Danova NA Scollay MC Santschi EM Markel MD Da Costa Gómez T Muir P 《American journal of veterinary research》2003,64(9):1110-1116
OBJECTIVE: To determine changes in the distal ends of the third metacarpal and metatarsal bones (MCIII and MTIII) of Thoroughbred racehorses that had sustained a catastrophic condylar fracture during high-speed exercise. SAMPLE POPULATION: Fractured and contralateral MCIIIs and MTIIIs from 11 Thoroughbred racehorses that sustained a displaced condylar fracture during racing, both MCIIIs from 5 Thoroughbred racehorses euthanatized because of a catastrophic injury other than a condylar fracture, and both MCIIIs from 5 horses of other breeds that had not been professionally trained or raced. PROCEDURE: Macroscopic observations were made of the distal ends of the bones before and after digestion of the articular cartilage with NaOH. RESULTS: In all 11 racehorses with a displaced condylar fracture, the fracture was associated with a branching array of cracks in the condylar groove. In this region, fracture margins were smooth, and there was loss of subchondral bone. Comminution of the dorsal cortex was also seen. Parasagittal linear wear lines in the articular cartilage, erosions in the articular cartilage of the condyles, loss of the underlying subchondral bone, and cracking of condylar grooves were all more severe in the Thoroughbred racehorses than in the horses that had not been professionally trained or raced. CONCLUSIONS AND CLINICAL RELEVANCE: Results suggest that condylar fractures in horses are pathologic fatigue or stress fractures that arise from a preexisting, branching array of cracks in the condylar groove of the distal end of MCIII or MTIII. 相似文献
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John Diaz-Montano Beatriz G. Vindiola Nichole Drew Richard G. Novy J. Creighton Miller Jr John T. Trumble 《American Journal of Potato Research》2014,91(4):363-367
The characterization of resistance of selected potato, Solanum tuberosum L., breeding clones to the potato psyllid, Bactericera cockerelli (Sulc) (Hemiptera: Triozidae) was investigated. Antixenosis was assessed in choice tests in which a single plant of each genotype was placed inside a rearing cage, where 60 female psyllid adults were released and the number of adults and eggs on each genotype was counted 24 h later. Antibiosis was evaluated in no-choice tests in which adults (five males and five females) were confined in a cage fixed to the upper side of leaves. After 4 h of exposure, adults were removed and the number of eggs counted. The developmental time and survival of offspring were recorded until all insects became adults. All the resistant genotypes showed strong antibiotic effects to B. cockerelli. These results show promise for incorporation into an IPM program against B. cockerelli. 相似文献