共查询到20条相似文献,搜索用时 0 毫秒
1.
Rogers Tabe Egbe Orock 《Dialectical Anthropology》2013,37(1):27-50
In the wake of transformations being ushered by globalization, figures suggest that there is a rise in the power of transnational corporations (TNCs), raising important questions about the exercise of such power and/or how to hold them accountable for it. Concomitantly, corporate social responsibility (CSR) discourse has emerged as a new discursive formation; a new meta-narrative that is propagated by TNCs. It seeks to portray the actions of TNCs as oriented by such values as “responsibility,” “sustainability,” “development.” Situated within what is emerging as “an anthropological imperative to critique” the actions of corporations, this article takes a critical approach to such a meta-narrative. It argues that not only do TNCs behave irresponsibly in contexts outside the Global North where they can easily get away with doing so, but also that the CSR discourse of responsibility helps to occlude these often damaging actions by TNCs. Drawing from an overview of the often untold or less-known stories of damaging actions by TNCs in Africa in the recent past, this article illustrates the disturbing co-existence of socially irresponsible actions amidst a forceful tendency to circulate a feel-good CSR discourse of responsibility. 相似文献
2.
Karin Nordström Niklas Juth Sofia Kjellström Franck L. B. Meijboom Ulf Görman 《Genes & nutrition》2013,8(4):365-372
Personalized nutrition has the potential to enhance individual health control. It could be seen as a means to strengthen people’s autonomy as they learn more about their personal health risks, and receive dietary advice accordingly. We examine in what sense personalized nutrition strengthens or weakens individual autonomy. The impact of personalized nutrition on autonomy is analyzed in relation to responsibility and trustworthiness. On a societal level, individualization of health promotion may be accompanied by the attribution of extended individual responsibility for one’s health. This constitutes a dilemma of individualization, caused by a conflict between the right to individual freedom and societal interests. The extent to which personalized nutrition strengthens autonomy is consequently influenced by how responsibility for health is allocated to individuals. Ethically adequate allocation of responsibility should focus on prospective responsibility and be differentiated with regard to individual differences concerning the capacity of adults to take responsibility. The impact of personalized nutrition on autonomy also depends on its methodological design. Owing to the complexity of information received, personalized nutrition through genetic testing (PNTGT) is open to misinterpretation and may not facilitate informed choices and autonomy. As new technologies, personalized nutrition and PNTGT are subject to issues of trust. To strengthen autonomy, trust should be approached in terms of trustworthiness. Trustworthiness implies that an organization that develops or introduces personalized nutrition can show that it is competent to deal with both the technical and moral dimensions at stake and that its decisions are motivated by the interests and expectations of the truster. 相似文献
3.
Madeleine Tress 《Ethnic and racial studies》2013,36(1):116-137
The massive exodus of Jews from the former Soviet Union [FSU] has been accompanied by welfare state retrenchment and labour market restructuration in the two preferred destination countries of refugee resettlement: the United States and Germany. This study compares the resettlement policies and outcomes of FSU Jews and shows how the context of resettlement, viz. differences in welfare state type, labour market formation and host ethnic community, yield marked differences in formal job market adaptation. FSU Jews in Germany are almost twice as likely as their American counterparts to rely on some form of refugee cash assistance for their primary means of support, whereas the American cohort is twice as likely to be employed in the formal labour market. However, informal labour market adaptation is quite similar. Findings suggest unwitting system convergence, each exercising a different form of social exclusion - welfare stigma and under employment for refugees in the United States, and high labour market regulation in Germany. 相似文献
4.
Group foraging allows for individuals to exploit the food discoveriesof other group members. If searching for food and searchingfor exploitation opportunities within a group are mutually exclusivealternatives, the decision to use one or the other is modeledas a producer-scrounger game because the value of each alternativeis frequency dependent. Stochastic producer-scrounger modelsgenerally assume that producer provides a more variable anduncertain reward than does the scrounger and hence is a riskierforaging alternative. Socially foraging animals that are attemptingto reduce their risk of starvation should therefore alter theiruse of producer and scrounger alternatives in response to changesin energy budget. We observed flocks of nutmeg mannikins (L.punctulata) foraging in an indoor aviary to determine whethertheir use of producer and scrounger alternatives were risk sensitive.Analyses of the foraging rewards of three flocks of seven birdsconfirm that producer is a riskier foraging strategy than isscrounger, although the difference in risk is rather small.We then submitted two other flocks to two different energy budgetsand observed the foraging decision of four focal birds in eachflock. All but one bird increased their relative use of theriskier producer strategy in the low food reserve treatment,but the overall use of producer did not differ significantlybetween treatments, providing evidence for a small but consistenteffect. 相似文献
5.
Summary We used laboratory studies to examine the role of predation risk and cost of anti-predator behaviour in determining the behavioural response of several larval instars of Ischnura verticalis to a fish predator (Lepomis gibbosus). Smaller larvae were less susceptible to fish predation than larger larvae. Smaller larvae depressed movement to a greater degree in the presence of fish than did larger larvae; large larvae were generally less active than small larvae regardless of fish presence. Reduced feeding resulted in smaller larvae suffering more in terms of reduced growth than did large larvae. In general, our results tend to support the hypothesis that individuals that suffer high costs of anti-predator behaviour but little risk of predation may only exhibit anti-predator behaviours in the presence of predators, whereas individuals with a higher risk of predation and a lower cost of anti-predator behaviour may evolve anti-predator mechanisms that are in effect even in the absence of predators. 相似文献
6.
Risky mate search and mate preference in the golden orb-web spider (Nephila plumipes) 总被引:1,自引:0,他引:1
Kasumovic Michael M.; Bruce Matthew J.; Herberstein Marie E.; Andrade Maydianne C.B. 《Behavioral ecology》2007,18(1):189-195
Mate searching is a risky behavior that decreases survival byincreasing predation risk and the risk of energy depletion.However, few studies have quantified actual mortality duringmate search, making it difficult to predict mate searching andmating strategies. Using a mark and recapture study, we examinedmate-searching success in a highly sexually dimorphic species,the golden orb-web spider (Nephila plumipes). We show that despitethe high-density aggregations of this species, male survivalduring mate searching is extremely low (36%) and is phenotypeindependent. Surprisingly, males that survived mate search werein better condition after recapture than prior to release, mostlikely due to kleptoparasitism on females' webs. In a complementaryrelease experiment in a field enclosure, we show that malesare choosy and adjust their choice of female depending on theirown condition and weight. Thus, the high mortality rate of searchingmales in the field may be a cost of choosiness because releasedmales traveled further than necessary to settle on females.Although males were choosy about female phenotypes, they didnot avoid webs with rival males already present. This suggeststhat the cost of continued searching outweighs the cost of competitionbut not the cost of mating with certain females. Further examinationsof mate-searching risk in other species in reference to theirmating system and environmental conditions are necessary todetermine the occurrence and effects of high mortality ratesduring searching. 相似文献
7.
Ceratapion basicorne (Coleoptera: Apionidae) is a prospective biological control agent of yellow starthistle (Centaurea solstitialis, Asteraceae: Cardueae), which is an important invasive alien weed in the western United States. Previous studies have shown that it is possible for this insect to oviposit on and complete development on safflower (Carthamus tinctorius) under no-choice laboratory conditions; however, it has never been reported as a pest of safflower. Field experiments were conducted at three sites in eastern Turkey during 3 years to evaluate the risk of attack on safflower by this insect in its native range. At two sites where C. basicorne was the only apionid observed, no safflower plants were attacked despite high attack rates on yellow starthistle test plants (48–98% of plants infested). At a third site, where C. basicorne and three other species in the same genus; C. scalptum, C. orientale, and C. onopordi were present, 8–26% of safflower plants were infested, but none of the insects reared from safflower during 3 years were C. basicorne. Other authors have reported rearing C. basicorne from field-collected plants of only Ce. solstitialis, Ce. cyanus, Ce. depressa, and Cnicus benedictus. Our results indicate that C. basicorne does not attack safflower under field conditions and that its introduction would not pose a risk to this crop. 相似文献
8.
Association of interleukin-1B (IL-1B) gene polymorphisms with risk of gastric cancer in Chinese population 总被引:6,自引:0,他引:6
The incidence of gastric cancer (GC) in China is among the highest in the world. In present work, 154 patients with GC and 166 healthy controls in population of north-western China were investigated to evaluate the genetic associations of IL-1B gene single nucleotide polymorphisms (SNP) and variable number tandem repeat (VNTR) polymorphisms of IL-1RN gene with increased risk of GC. The frequency of IL-1B+3954C/T was significantly higher in GC cases group (25.97%) than that in controls (4.82%) with odds ratio (OR)=6.93 (95% confidence interval [CI] 3.13-15.36); the frequencies of IL-1B-31C/T, IL-1B-31C/C and IL-1B-511C/T genotypes were also higher in GC cases group (51.95%, 23.38% and 50.65%) than those in controls (46.99%, 19.88% and 42.77%) with OR=1.48 (95% CI 0.88-2.49), OR=1.58 (95% CI 0.84-2.95) and OR=1.39 (95% CI 0.80-2.41), respectively. The results show that these SNPs of IL-1B gene are associated with significantly increased risk of GC. This is the first report that IL-1B+3954C/T heterozygote is associated with greatly increased risk of GC. The results of this study did not support the report that IL-1RN*2+ genotypes were associated with increased risk of GC in Chinese population. 相似文献
9.
目的:观察脑血管造影患者的术后并发症,并分析影响并发症的风险因素。方法:437例动脉粥样硬化脑血管病、脑肿瘤、蛛网膜下腔出血、动脉瘤、动静脉畸形、癫痫、血管炎等的患者接受脑血管造影,观察术后24h以内发生的神经系统和局部并发症。用多因素分析方法确定与术后并发症相关的因素。结果:15例(3.43%)发生神经系统并发症,其中2例发生脑卒中并遗留永久残疾;2例死亡。手术造影侧穿刺部位血肿是最常见的并发症。与神经系统并发症相关的危险因素增包括动脉粥样硬化脑血管病,蛛网膜下腔出血,频繁TIA发作。结论:诊断性脑血管造影并发症发生率较低。具有并发症风险因素的患者应尽量减小手术创伤,加强术后观察。 相似文献
10.
Recent research has demonstrated that the topography of defensive reactions depends on factors that are extraneous to the stimulus that elicits the defensive response. For example, hermit crabs will withdraw more slowly to the approach of a simulated visual predator (i.e., the eliciting stimulus) when in the presence of a coincident acoustic stimulus. Multiple properties related to the magnitude (e.g., duration, amplitude) of the acoustic stimulus have been found to modulate the crabs' withdrawal response (Chan et al., 2010b). We demonstrate that the proximity in spatial location between a threatening visual stimulus and a potentially distracting extraneous auditory stimulus is an important determinant of anti-predator behavior in hermit crabs. We suggest that a distal relationship between the eliciting stimulus and an unrelated signal may produce greater distraction. This marks the first reported experimental evidence of this relationship in an invertebrate species. 相似文献
11.
Primate female allogrooming models based on biological marketstheory predict that grooming is "time matched" within bouts,that is, the amount of time the first female grooms predictsthe amount of time the second one grooms. The models also predictthat when female–female contest competition is weak, groomingis traded for grooming, but when female–female contestcompetition is strong, grooming may be traded for other commoditiessuch as feeding tolerance, and grooming discrepancy betweenmembers of dyads is rank related. We tested these predictionsusing data collected from adult and subadult female gray-cheekedmangabeys (Lophocebus albigena) (N = 26) in 5 groups in KibaleNational Park, Uganda. We found that, overall, females reciprocatedin 33% of grooming bouts. Among reciprocated bouts, femalesin all 5 groups showed time matching. In 2 groups, we also foundrank-related grooming discrepancies but showing opposite patternsto each other. Consistent with predictions based on biologicalmarkets theory, these groups may have been under greater feedingcompetition, revealed more by adjustments in ranging behaviorthan increased agonistic rates. Although these results supportcurrent allogrooming models, they also suggest that the modelsmay become more robust if the influence of scramble competitionis incorporated. In addition, they emphasize the flexibilityand dynamic nature of female competitive relationships withinthe same population of primates. 相似文献
12.
13.
14.
15.
Franz Essl Stefan Nehring Frank Klingenstein Norbert Milasowszky Christelle Nowack Wolfgang Rabitsch 《Journal for Nature Conservation》2011,19(6):339-350
We give a mini-review of existing European risk assessment procedures and present a newly developed and tested risk assessment tool for invasive alien species (IAS) in Germany and Austria, the “German–Austrian Black List Information System” (GABLIS). Based on the analysis of existing European national risk assessment systems, we analyse and discuss: the assessment criteria used; which impacts of IAS (biodiversity, economy) have been considered; for which taxonomic groups has the assessment been designed and tested; how many and which list categories have been used; and, the status of the assessment, i.e. legally binding or advisory. We found that the application of risk assessment systems in Europe started belatedly, however recently a considerable number of assessment systems have been developed and tested. These systems encompass a wide range of purposes and approaches, and so far, no common standard on the aspects mentioned above has been emerged.GABLIS has been developed as a trans-national and taxonomically universal risk assessment system, which takes into account solely the detrimental effects of alien species on biodiversity. We describe which kinds of impacts are considered and how the thresholds have been scaled. We present the structure of the list categories, and we discuss the necessary underlying data for assessment, the assessment criteria and their scaling, and the assessment procedure. Five basic and six complementary criteria are used to assess the alien species’ impact. GABLIS includes three main list categories (White List, Grey List, and Black List).We discuss the practicability of GABLIS by presenting the assessment results of a model taxon (fish), and by presenting the assessment protocol for a vascular plant species. We discuss the necessary data quality for assessments, and the factors which account for differences in the assessments between both countries. We also report on experiences gained in assessments (e.g., average time necessary for assessments). The lessons learnt are discussed in the national and European political context of IAS management.Finally, we explore the strengths and caveats of this approach in the context of national policy on IAS in Germany and Austria and the ongoing European political initiatives. GABLIS is intended to serve as a comprehensive, flexible, but robust risk assessment tool for Central Europe. Being a trans-national risk assessment tool, GABLIS also tests principles, which might contribute valuable insights for a future overall strategy against IAS in Europe. 相似文献
16.
The objective was to use the bovine viral diarrhea virus (BVDV) as a model to assess the risk of infectious disease transmission in the system of in vitro embryo production and transfer via somatic cell nuclear transfer (SCNT) technology. The risks of BVDV transmission in the SCNT embryo production were previously evaluated [1]. In that in vitro study, following standard operating procedures (SOP), including pre-nuclear transfer donor cell testing, oocyte decontamination and virus-free cell and embryo culture conditions, SCNT embryos produced were free of detectable viral RNA. The current study focused on the evaluation of the potential risk of disease transmission from SCNT embryos to recipients, and the risk of producing persistently infected animals via SCNT embryo transfer. Blood samples were collected from 553 recipients of SCNT embryos and 438 cloned calves and tested for the presence of BVDV viral RNA via a sensitive real time PCR method. All samples tested were negative. These results, in conjunction with the previous in vitro study, confirmed that the established SCNT embryo production and transfer system is safe and presents no detectable risk of disease transmission. 相似文献
17.
Flemming TM 《Behavioural processes》2011,86(3):316-322
Learning of the relational same/different (S/D) concept has been demonstrated to be largely dependent upon stimulus sets containing more than two items for pigeons and old-world monkeys. Stimulus arrays containing several images for use in same/different discrimination procures (e.g. 16 identical images vs. 16 nonidentical images) have been shown to facilitate and even be necessary for learning of relational concepts (
[Flemming et al., 2007],
[Wasserman et al., 2001] and [Young et al., 1997]). In the present study, we investigate the threshold at which a new world primate, the capuchin (Cebus apella) may be able to make such a discrimination. Utilizing a method of increasing entropy, rather than conventional procedures of decreasing entropy, we demonstrate unique evidence that capuchin monkeys are readily capable of making 2-item relational S/D conditional discriminations. In another experiment, we examine the supposed level of difficulty in making S/D discriminations by rhesus monkeys (Macaca mulatta). Whereas pigeons (Columba livia) and baboons (Papio papio) have shown marked difficulty simultaneously discriminating same from different arrays at all when composed of fewer than 8 items each, rhesus monkeys seem to understand that pairs of stimuli connote sameness and difference just the same (Flemming et al., 2007). With sustained accurate performance of 2-item S/D discriminations, both experienced and task-naïve rhesus monkeys appear quite certain in their conceptual knowledge of same and different. We conclude that learning of the same/different relational concept may be less dependent upon high levels of entropy contrast than originally hypothesized for nonhuman primates. 相似文献
18.
Termites face significant and chronic intranidal selection pressures from parasites and pathogens that colonize their nests. They also encounter microbes outside their nest while foraging and during dispersal of winged primary reproductives to establish new colonies. The latter run the additional risk of becoming infected by a mating partner. Indeed, death of reproductives because of disease is a major cause of incipient colony failure and may favor prescreening prospective mates for signs of illness. To determine the role of disease on mate preference in termites, female primary reproductives of the Pacific dampwood termite Zootermopsis angusticollis (Hagen) simultaneously were presented with reproductive males that were either healthy or exhibiting a progression of symptoms associated with infection by the entomopathogenic fungus Metarhizium anisopliae (Metchnikoff Sorokin). We compared duration and frequency of female visits to healthy and infected males. In addition, we determined the physiological consequences for females exposed to fungal conidia, either directly or indirectly through their mate. Females showed no preference for healthy rather than infected males. Moreover, only directly-exposed females experienced negative physiological effects, having a reduced chance of survival, gaining less weight, developing fewer functional ovarioles, and producing significantly fewer vitellogenic oocytes than controls. Although there are important fitness-related costs of direct exposure, the lack of mate selection based on disease risk suggests that more imminent ecological pressures (e.g., predators, desiccation) override the need for a careful and time-consuming assessment of a potential mate's health. 相似文献
19.
Candidate weed biocontrol agents must be screened to exclude those that could threaten desirable plants . Traditionally , this has been done by rejecting species that develop on economically important plants in laboratory no - choice tests . However , because congeneric plants often support development in these tests , even when they are not utilized in nature , the tests do not meet legislated requirements for rare plant species or the increasing public concern for native plants . Plant suitability for larval development is a poor predictor of host range because insects use a sequence of steps in which the early steps , such as host finding and acceptance for oviposition , tend to be stronger than the later ones , such as suitability for development . This study is a trial of a new approach to screening insects as weed biocontrol agents that uses risk analysis to quantify the suitability of a plant as a host on the basis of inset performance at various stages in its life cycle . The insects used for the study was a NW Chinese biotype of the leaf beetle , Altica carduorum, which in terms of climate adaptation and damage it inflicts on the weedy thistle Cirsium arvense, is a promising biocontrol agent for Canada . However , its ability to develop on all North American Cirsium spp . in laboratory no - choice tests currently excludes its release . We show by risk and factor analyses , with five sequential host - selection parameters , that the suitability of these thistles to A. carduorum is so low that the beetle would not jeopardize the continued existence of rare native thistles , so its release should not be a problem . 相似文献
20.
To control population of Monochamus beetles that transmit pine wood nematode, Bursaphelenchus xylophilus, a variety of insecticides have been applied to forest ecosystems in Korea. Non-target predatory insects can be directly or indirectly exposed to insecticides. We evaluated potential lethal and sublethal effects of thiacloprid on survival and behavior of carpenter ants, Camponotus japonicus Mayr. Field-collected ants were directly exposed to several food items such as thiacloprid-exposed Monochamus beetles, 10% sugar water with thiacloprid concentrations, and 10% sugar water at group and individual levels. In experiment for groups of individuals, dead beetle bodies generally had possible adverse effects on ants through dietary exposure, because two forager ants were dead or paralysis after they were exposed to thiacloprid-exposed Monochamus beetles. At individual level, dietary exposure to thiacloprid at concentrations of 10 and 50?mg/L was lethal to ants, causing paralysis and impaired walking. Mortality of ant workers was higher in direct or indirect exposure treatments than that in the control. Some ants exposed to thiacloprid showed abnormal behavior within a few days, especially at thiacloprid concentrations of 10 and 50?mg/L. However, some of them sometimes recovered from the abnormal behavior in a day. In consequence, application of thiacloprid in pine forests may disrupt species interaction and foraging behavior of ants, but the effect of thiacloprid through trophallaxis behavior should be further assessed using more extensive colonies composed of queen, workers, brood, and so on. 相似文献