AGGRESSION

侵略
  • 文章类型: Journal Article
    尽管ACGME和其他认证组织越来越强调重视多样性的临床学习环境的重要性,股本,和包容性,围绕促进学习环境包容性的行为技能的教师发展仍然需要培养。我们设计了一个虚拟的纵向教师发展课程,重点是直接观察,反馈,和行为技能的实践,以承认和解决学习环境中的微攻击。
    我们使用Kern的六个课程开发步骤创建了四个自愿的虚拟研讨会,在整个学年中两次提供,主题包括:(1)识别和命名微侵略,(2)当受到伤害时道歉,(3)设定围绕微侵略的期望,和(4)汇报微攻击。参与者包括居住项目主任,副项目主管,以及来自一个机构的所有医疗和外科部门的其他领导人。
    来自10个系的31名教师参加了这一年的课程。研讨会前后的调查分析了参与者对应用所学技能的信心和舒适度的自我评估。参与者对公开命名偏见更有信心,传递围绕微侵略的期望,和向学习者汇报微侵略。参与者还报告说,当公共场合发生伤害时,向学习者道歉时,他们会感到更加舒适,在人,和电子。
    要创建一个包容性的学习环境,教师可以通过实践和反馈来解决偏见和微攻击,从而增加他们的舒适度和信心。我们的课程展示了体验式学习如何允许持续练习以巩固新技能。
    UNASSIGNED: Although the ACGME and other accrediting organizations are increasingly emphasizing the importance of clinical learning environments that value diversity, equity, and inclusion, faculty development surrounding behavioral skills that promote inclusivity in the learning environment still needs cultivation. We designed a virtual longitudinal faculty development curriculum focused on direct observation, feedback, and practice of behavioral skills to acknowledge and address microaggressions in the learning environment.
    UNASSIGNED: We used Kern\'s six steps of curriculum development to create four voluntary virtual workshops offered twice throughout the academic year, with topics including: (1) recognizing and naming microaggressions, (2) apologizing when harm has been experienced, (3) setting expectations surrounding microaggressions, and (4) debriefing microaggressions. Participant learners included residency program directors, associate program directors, and other leaders across all medical and surgical departments from one institution.
    UNASSIGNED: Thirty-one faculty from 10 departments participated in this yearlong curriculum. Pre- and postworkshop surveys analyzed participants\' self-assessments of confidence and comfort in applying learned skills. Participants were more confident in openly naming bias, delivering expectations surrounding microaggressions, and debriefing microaggressions with learners. Participants also reported greater comfort in apologizing to learners when harm has occurred in public, in person, and electronically.
    UNASSIGNED: To create an inclusive learning environment, faculty can increase their comfort and confidence with addressing bias and microaggressions through practice and feedback. Our curriculum demonstrates how experiential learning allows for continual practice to solidify a new skill.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    本系统综述的目的是综合针对重症监护病房(ICU)工作人员的有关患者和家庭暴力(PFV)的文献。
    研究设计是一项系统综述。数据不适用于荟萃分析。
    在2000年1月1日至2023年3月6日期间对数据库进行了电子搜索,以确定研究,仅限于英文文献。包括已发表的任何设计(定性或定量)的经验同行评审文献。仅描述ICU以外工作场所暴力的研究,系统评价,评论,社论,信件,非英语文献和灰色文献被排除。使用经过验证的工具对所有研究的质量和偏倚风险进行评估。
    确定了18项研究:13项定量;2项定性和3项混合方法。主题包括:(i)什么是滥用,我该怎么办?(ii)谁处于危险之中?(iii)这是常见的,(iv)工作场所因素;(v)对患者护理的影响;(vi)对员工的影响;(vii)机构应对措施的重要性;(viii)当前或建议的解决方案。
    本系统评价表明,由于多种因素,包括对滥用的非标准化定义,ICU中的PFV既未得到充分理解,也未得到良好管理。正常化,组织支持不足,工作人员和公众普遍缺乏教育。这将为今后的研究和政策决策提供指导。
    UNASSIGNED: The objective of this systematic review was to synthesise literature pertaining to patient and family violence (PFV) directed at Intensive Care Unit (ICU) staff.
    UNASSIGNED: Study design was a systematic review. The data was not amenable to meta-analysis.
    UNASSIGNED: Electronic searches of databases were conducted to identify studies between 1 January 2000 and 6 March 2023, limited to literature in English only. Published empirical peer-reviewed literature of any design (qualitative or quantitative) were included. Studies which only described workplace violence outside of ICU, systematic reviews, commentaries, editorials, letters, non-English literature and grey literature were excluded. All studies were appraised for quality and risk of bias using validated tools.
    UNASSIGNED: Eighteen studies were identified: 13 quantitative; 2 qualitative and 3 mixed methodology. Themes included: (i) what is abuse and what do I do about it? (ii) who is at risk? (iii) it is common, but how common? (iv) workplace factors; (v) impact on patient care; (vi) effect on staff; (vii)the importance of the institutional response; and (viii) current or suggested solutions.
    UNASSIGNED: This systematic review demonstrated that PFV in the ICU is neither well-understood nor well-managed due to multiple factors including non-standardised definition of abuse, normalisation, inadequate organisational support and general lack of education of staff and public. This will guide in future research and policy decision making.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Systematic Review
    在临床环境中,在被诊断为边缘性人格障碍(BPD)的个体中,通常75%是女性,25%是男性,尽管社区中没有报告这种差异。在文学中,对男性BPD治疗的有效性和经验知之甚少。我们旨在回顾男性BPD治疗的有效性和经验,并概述未来的研究重点,以促进更好的康复。从开始到2022年7月29日,我们搜索了OvidMEDLINE和PsycINFO的合格研究。包括同行评审的有关BPD男性治疗效果或经验的主要研究文章。来自符合条件的研究的数据在叙述性综述中进行了综合。我们审查的方案已在PROSPERO(CRD42022351908)上预先注册。17项研究符合纳入标准,来自八个国家的BPD男性代表。心理治疗包括辩证行为疗法,情感可预测性和问题解决的系统培训,基于心理的治疗,和精神分析疗法。药物治疗包括托吡酯,双丙戊酸钠延长释放,和高剂量巴氯芬.五项研究调查了BPD男性的服务利用率。与女性相比,男性获得BPD治疗或发现治疗有帮助的可能性较小.我们的发现证明了心理治疗和药物干预在减少愤怒方面的潜在功效,侵略,和违反规则的行为,自杀相关结局减少的证据有限。我们的发现受到纳入研究的力量不足和异质性的限制。需要进行更大样本量和定性研究的进一步研究,以更好地了解BPD男性的治疗经验。
    In clinical settings, among individuals diagnosed with borderline personality disorder (BPD), typically 75% are female and 25% male, although this discrepancy is not reported in the community. In the literature, little is known of the effectiveness and experiences of treatment of men with BPD. We aimed to review the effectiveness and experiences of treatment for men with BPD and outline future research priorities to promote better recovery. We searched Ovid MEDLINE and PsycINFO for eligible studies from inception until July 29, 2022. Peer-reviewed primary research articles on treatment effectiveness or experience for men with BPD were included. Data from eligible studies were synthesized in a narrative review. The protocol of our review was pre-registered on PROSPERO (CRD42022351908). Seventeen studies met the inclusion criteria, and men with BPD from eight countries were represented. Psychological therapies included Dialectical Behavioral Therapy, Systems Training for Emotional Predictability and Problem Solving, Mentalization Based Therapy, and psychoanalytic therapy. Pharmacologic treatment included topiramate, divalproex Extended-Release, and high-dose baclofen. Five studies investigated the service utilization of men with BPD. Compared to women, men were less likely to access treatment for BPD or find treatment helpful. Our findings demonstrated the potential efficacy of psychotherapy and pharmacologic interventions in reducing anger, aggression, and rule-breaking behavior, with limited evidence for reduction in suicide-related outcomes. Our findings are limited by inadequate power and heterogeneity of the included studies. Further research with larger sample sizes and qualitative studies is needed to better understand the treatment experience for men with BPD.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    背景:尽管只有少数患有严重精神障碍(SMD)的患者可以在社区中实施暴力行为,暴力行为加剧了对SMD患者的污名。了解暴力行为的亚型可能有助于预防SMD患者的暴力行为,但它很少被研究。
    方法:这项纵向研究在基线时调查了社区中1914例SMD患者,随访期为2021年2月至2021年8月。巴拉特冲动量表第11版,巴斯-佩里侵略问卷,冲动/预谋攻击量表,在基线时使用人格诊断问卷和麦克阿瑟社区暴力工具。使用改良的公开攻击量表评估随访期间暴力行为的发生(结果)。Cox回归模型用于计算具有95%置信区间(CI)的风险比(HR)。潜在类别分析用于表征在随访中从事暴力行为的SMD患者的亚型。
    结果:我们发现7.2%的SMD患者在社区6个月内出现暴力行为。年龄较小(OR=0.98,95%CI=0.96-1.00,p=0.016)和无经济来源(OR=1.60,95%CI=1.10-2.33,p=0.014)是暴力行为的危险因素。从事暴力行为的SMD患者可以分为三种亚型:一类以暴力和冲动性病史为特征,另一类以高水平的攻击性和运动冲动为特征,最后一类以认知冲动为特征。
    结论:社会人口统计学因素是SMD患者暴力行为的危险因素,这可以消除对这个群体的歧视。冲动性在识别从事暴力行为的SMD患者的三种亚型中起着至关重要的作用。这些发现可能有助于为在社区实施暴力行为的SMD患者制定个性化暴力风险管理计划。
    BACKGROUND: Although only a few patients with severe mental disorders (SMD) can commit violent behaviour in the community, violent behaviour aggravates the stigma towards patients with SMD. Understanding the subtypes of violent behaviour may be beneficial for preventing violent behaviour among patients with SMD, but it has rarely been studied.
    METHODS: This longitudinal study investigated 1914 patients with SMD in the community at baseline, and the follow-up period ranged from February 2021 to August 2021. The Barratt Impulsiveness Scale Version-11, the Buss-Perry Aggression Questionnaire, the Impulsive/Premeditated Aggression Scale, the Personality Diagnostic Questionnaire and the MacArthur Community Violence Instrument were used at baseline. The Modified Overt Aggression Scale was used to assess the occurrence of violent behaviour (outcome) during the follow-up period. Cox regression models were used to calculate hazard ratios (HRs) with 95% confidence intervals (CIs). Latent class analysis was used to characterise the subtypes of patients with SMD who engaged in violent behaviour at follow-up.
    RESULTS: We found that 7.2% of patients with SMD presented violent behaviour within six months in the community. Younger age (OR = 0.98, 95% CI = 0.96-1.00, p = 0.016) and no economic source (OR = 1.60, 95% CI = 1.10-2.33, p = 0.014) were risk factors for violent behaviour. Patients with SMD who engaged in violent behaviour could be classified into three subtypes: one class characterised by a history of violence and impulsivity, another class characterised by high levels of aggression and motor impulsivity, and the last class characterised by median cognitive impulsivity.
    CONCLUSIONS: Socio-demographic factors were risk factors for violent behaviour among patients with SMD, which could eliminate the discrimination toward this group. Impulsivity played a vital role in identifying the three subtypes of patients with SMD who engaged in violent behaviour. These findings may be helpful for the development of a personalised violence risk management plan for patients with SMD who commit violent behaviour in the community.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    背景:虽然大多数博弈论模型都假设个人与所有其他小组成员随机互动,强有力的证据表明,个人倾向于优先与他们中的一些人互动。个人在网络中的位置会影响,在其他与生存有关的因素中,它的捕食风险和竞争成功。在这里,我修改了鹰鸽游戏,以探讨社交网络结构对个体的竞争策略的影响,这些个体的战斗能力不同,并且可能会调整他们对鹰的使用,鸽子和评估员战术,以最大限度地提高他们的觅食成功,当他们遇到与他们有联系的对手。
    结果:从随机生成的网络中,我证明了通过战斗能力进行的表型分类会降低个人的攻击性,因此,有利于合作互动。此外,战斗能力最弱的人的成功通常在网络中最高,在网络中,他们最经常遇到与自己的战斗能力相同的对手,暗示他们可能会从与强势参赛者的断绝关系中受益。当强大的参赛者系统地依赖侵略性的Hawk策略或被过时的风险较低且与邻居数量无关时,可能就是这种情况。因此,我扩展了模型并建立了一个动态模型,使个人不仅可以根据当地情况调整自己的行为,还可以修改社交网络的结构。然后,连接的数量和表型分类的程度受到生态因素(例如资源价值和捕食风险)的影响,但最重要的是个人是否能够可靠地评估对手的竞争能力并相应地调整他们的行为。
    结论:这些发现提供了强有力的证据,表明行为可以在塑造网络结构中发挥关键作用,并强调了考虑网络和行为的共同进化以理解其对种群动态的影响的重要性。
    BACKGROUND: While most game theoretical models assume that individuals randomly interact with all other group members, strong evidence indicates that individuals tend to preferentially interact with some of them. The position of an individual in a network affects, among other factors related to survival, its predation risk and competitive success. Here I then modified the Hawk-Dove game to explore the effect of social network structure on competitive strategy of individuals that differ in their fighting ability and may adjust their use of the Hawk, Dove and Assessor tactics to maximize their foraging success when they meet opponents they are connected with.
    RESULTS: From randomly generated networks, I demonstrate that phenotypic assortment by fighting ability reduces individuals\' aggressiveness and, as such, favours cooperative interactions. Furthermore, the success of individuals with the weakest fighting ability is usually highest within networks where they most frequently meet opponents with the same fighting ability as their own, suggesting they might benefit from breaking connections with strong contestants. This might be the case when strong contestants systematically rely on the aggressive Hawk tactic or the risk of being predated is low and independent of the number of neighbours. Thus, I extended the model and built a dynamic model to allow individuals not only to adjust their behaviour to local conditions but also to modify the structure of the social network. The number of connections and degree of phenotypic assortment are then affected by ecological factors (e.g. resources value and predation risk), but above all by whether individuals can reliably assess the competitive ability of their opponents and adjust their behaviour accordingly.
    CONCLUSIONS: These findings provide strong evidence that behaviour can play a key role in shaping network structure and highlight the importance of considering the coevolution of network and behaviour to apprehend its consequences on population dynamics.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    认知障碍是精神分裂症谱系障碍(SSD)的核心特征。暴力和攻击性行为在精神病学中是一个复杂的问题,和SSD的人已被证明有可能成为暴力的受害者和肇事者。在这次审查中,探讨了认知障碍与暴力行为之间的复杂关系,还考虑了治疗认知障碍对改善暴力相关结局的有用性。几项研究报告称,认知障碍与暴力行为有关,但是域之间的显著差异和冲突的结果也存在,将识别预测SSD中暴力行为的特定认知特征作为未来研究的重要目标。关于治疗认知障碍以改善暴力行为的有效性的证据,虽然异质,提供了更一致的结果:以认知为目标的干预措施似乎在预防患有SSD的人的侵略方面也提供了显着的益处,初步证据表明,针对暴力行为的以认知为重点的干预措施可以改善认知和暴力相关结果.在临床实践中实施这些干预措施可能非常有用,尤其是在法医方面。体育锻炼,这改善了SSD的认知表现和心理社会功能,似乎减少了健康个体的暴力行为,但需要对临床样本进行进一步研究。
    Cognitive impairment is a core feature of schizophrenia spectrum disorders (SSD). Violent and aggressive behavior represents a complex issue in psychiatry, and people with SSD have been shown to be at risk of being both victims and perpetrators of violence. In this review, the complex relationship between cognitive impairment and violent behavior is explored, also considering the usefulness of treating cognitive impairment to improve violence-related outcomes. Several studies report that cognitive impairment is linked to violent behavior, but significant differences between domains and conflicting results are also present, leaving the identification of specific cognitive profiles predicting violent behavior in SSD as an important aim for future research. Evidence regarding the effectiveness of treating cognitive impairment to improve violent behavior, while heterogeneous, provides more consistent results: cognition-targeting interventions appear to provide significant benefits also in the prevention of aggression in people living with SSD, and preliminary evidence shows cognition-focused interventions targeting violent behavior improve both cognition- and violence-related outcomes. Implementing these interventions in clinical practice could be of great usefulness, particularly in forensic contexts. Physical exercise, which improves cognitive performance and psychosocial functioning in SSD, appears to reduce violent behavior in healthy individuals, but requires further studies in clinical samples.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    侵略是一种基本行为,在支配断言中具有重要作用,资源获取,和整个动物王国的自卫。然而,攻击回路的失调会对人类产生严重后果,导致经济、情感,和社会负担。以前在侵略研究中的不一致是由于以高空间分辨率研究这些神经元的技术的局限性,导致对侵略背后的神经机制的不完全理解。光遗传学的最新进展,药物遗传学,单细胞RNA测序,和体内电生理学为这种复杂的电路提供了新的见解。这篇综述旨在探讨在啮齿动物中引起侵略的刺激及其检测,特别是通过嗅觉系统。此外,我们将研究与侵略相关的核心区域,他们的互动,以及它们与前额叶皮层的联系。我们还将讨论自上而下的认知控制系统在调节攻击行为的非典型表达中的重要性。虽然重点将主要放在啮齿动物电路上,我们将简要探讨人类通过前额叶皮层对攻击性的调节,并讨论可能使患有攻击性障碍的个体受益的新兴治疗干预措施.对侵略的神经底物的全面了解将为开发新的治疗策略和临床干预措施铺平道路。这种方法与跨物种侵略的神经机制的更广泛的观点形成对比,旨在对特定途径及其对治疗干预的影响进行更集中的分析。
    Aggression is a fundamental behavior with essential roles in dominance assertion, resource acquisition, and self-defense across the animal kingdom. However, dysregulation of the aggression circuitry can have severe consequences in humans, leading to economic, emotional, and societal burdens. Previous inconsistencies in aggression research have been due to limitations in techniques for studying these neurons at a high spatial resolution, resulting in an incomplete understanding of the neural mechanisms underlying aggression. Recent advancements in optogenetics, pharmacogenetics, single-cell RNA sequencing, and in vivo electrophysiology have provided new insights into this complex circuitry. This review aims to explore the aggression-provoking stimuli and their detection in rodents, particularly through the olfactory systems. Additionally, we will examine the core regions associated with aggression, their interactions, and their connection with the prefrontal cortex. We will also discuss the significance of top-down cognitive control systems in regulating atypical expressions of aggressive behavior. While the focus will primarily be on rodent circuitry, we will briefly touch upon the modulation of aggression in humans through the prefrontal cortex and discuss emerging therapeutic interventions that may benefit individuals with aggression disorders. This comprehensive understanding of the neural substrates of aggression will pave the way for the development of novel therapeutic strategies and clinical interventions. This approach contrasts with the broader perspective on neural mechanisms of aggression across species, aiming for a more focused analysis of specific pathways and their implications for therapeutic interventions.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    大量研究表明,神经精神疾病(精神疾病和情绪障碍)伴随侵略(或暴力)对公共卫生构成重大挑战,并在全球范围内造成巨大的经济负担。尤其是,与童年逆境相关的社会混乱(或社会不平等)对心理健康有长期影响,增加患神经精神疾病的风险。肠道细菌,作为一个内分泌器官和第二个大脑,释放各种免疫调节剂和生物活性化合物直接或间接调节宿主的生理和行为稳态。在各种社会挑战下,应激诱导的生态失调增加肠道通透性引起一系列反应:释放神经毒性化合物,导致神经炎症和神经元损伤,最终与攻击性相关的神经精神疾病,暴力,或通过微生物群-肠脑(MGB)轴的复杂双向通信在人类和各种动物中的冲动行为。MGB轴的失调也被认为是社会压力引起的有害行为(羽毛啄食,侵略,和吃人的啄食)。然而,在人类和鸡中预防和治疗这些疾病的现有知识还没有得到很好的理解。在以往的研究中,我们在一项异常行为调查中建立了一种非哺乳动物模型,通过合理化肠道微生物群对鸡的伤害行为的影响。基于我们先前的成功,透视文章概述了通过盲肠微生物群移植改变肠道微生物群来减少鸡应激诱导的伤害行为的可能性,通过恢复肠道微生物群的多样性和功能,有可能为预防精神障碍患者的有害行为提供生物治疗原理。
    Numerous studies have evidenced that neuropsychiatric disorders (mental illness and emotional disturbances) with aggression (or violence) pose a significant challenge to public health and contribute to a substantial economic burden worldwide. Especially, social disorganization (or social inequality) associated with childhood adversity has long-lasting effects on mental health, increasing the risk of developing neuropsychiatric disorders. Intestinal bacteria, functionally as an endocrine organ and a second brain, release various immunomodulators and bioactive compounds directly or indirectly regulating a host\'s physiological and behavioral homeostasis. Under various social challenges, stress-induced dysbiosis increases gut permeability causes serial reactions: releasing neurotoxic compounds, leading to neuroinflammation and neuronal injury, and eventually neuropsychiatric disorders associated with aggressive, violent, or impulsive behavior in humans and various animals via a complex bidirectional communication of the microbiota-gut-brain (MGB) axis. The dysregulation of the MGB axis has also been recognized as one of the reasons for the prevalence of social stress-induced injurious behaviors (feather pecking, aggression, and cannibalistic pecking) in chickens. However, existing knowledge of preventing and treating these disorders in both humans and chickens is not well understood. In previous studies, we developed a non-mammal model in an abnormal behavioral investigation by rationalizing the effects of gut microbiota on injurious behaviors in chickens. Based on our earlier success, the perspective article outlines the possibility of reducing stress-induced injurious behaviors in chickens through modifying gut microbiota via cecal microbiota transplantation, with the potential for providing a biotherapeutic rationale for preventing injurious behaviors among individuals with mental disorders via restoring gut microbiota diversity and function.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    游戏成瘾引起的攻击性增加是一个广泛且广为人知的问题。言语攻击的潜在过程,一个更有害和持久的侵略子类别,受游戏成瘾的影响可能与其他类型的侵略不同。在这项研究中,数据来自252名随机招募的当前大学生(50.79%的男性,平均年龄19.60岁,SD:1.44年,范围为17至29年)。参与者通过问卷调查报告了游戏成瘾和不同类型的攻击性。此外,两个重要的解释过程,抑制控制,和风险偏好,是通过行为实验测量的。采用贝叶斯分层漂移扩散模型来解释风险偏好任务的数据。与以前的工作相比,研究发现,抑制性控制与游戏成瘾或任何形式的侵略都没有显着相关。漂移率,衡量风险下的决策倾向,部分调解游戏成瘾和言语攻击之间的关系(但不是其他形式的攻击)。研究结果阐明了不利条件下的风险偏好是言语攻击的关键预测指标,提供早期干预的途径,并建议游戏设计修改,以通过调整奖励机制来减轻言语攻击。
    Increased aggression due to gaming addiction is a widespread and highly publicized problem. The underlying processes by which verbal aggression, a more harmful and persistent subcategory of aggression, is affected by gaming addiction may differ from other types of aggression. In this study, data came from 252 randomly recruited current university students (50.79% male, mean age 19.60 years, SD: 1.44 years, range 17 to 29 years). Participants reported gaming addiction and different types of aggression through questionnaires. In addition, two important explanatory processes, inhibitory control, and risk preference, were measured through behavioral experiments. A Bayesian hierarchical drift-diffusion model was employed to interpret the data from the risk preference task. In contrast to previous work, the study found that inhibitory control did not significantly correlate with either gaming addiction or any form of aggression However, the drift rate, a measure of decision-making inclination under risk, partially mediates the relationship between gaming addiction and verbal aggression (but not other forms of aggression). The findings illuminate risk preference under adverse conditions as a key predictor of verbal aggression, offering avenues for early intervention and suggesting game design modifications to mitigate verbal aggression by adjusting reward mechanisms.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    生态学的一个基本问题是为什么物种在同一栖息地共存。共存可以通过利基分化来实现,由性状分化介导。这里,行为构成了一组经常被忽视的特征。然而,侵略和探索等行为驱动种内和种间竞争,尤其是在蚂蚁身上,社区结构通常由积极的相互作用形成。我们研究了三种蚂蚁的行为变异,它们经常在附近共同出现,并占据类似的主导地位。我们分析了特异性和特异性攻击,勘探和觅食活动在田间条件下有所不同,即随着温度和时间的推移。对每个物种12个菌落的行为进行了评估,在几个月中每次四次。所有行为特征在殖民地之间始终不同,但也随着时间和温度而变化。这些温度依赖性和季节性响应是高度物种特异性的。例如,在高温下,Formicarufibarbis的觅食活动降低,但不是在LasiusNiger随着时间的推移,尼日尔的下降幅度很大,但鲁菲巴比斯的下降幅度更小。我们的研究结果表明,由于这些特定物种的反应,没有一个物种在竞争上总是优越的。因此,环境和时间变化会影响物种之间的动态优势等级,通过储存效应促进共存。
    A fundamental question of ecology is why species coexist in the same habitat. Coexistence can be enabled through niche differentiation, mediated by trait differentiation. Here, behaviour constitutes an often-overlooked set of traits. However, behaviours such as aggression and exploration drive intra- and interspecific competition, especially so in ants, where community structure is usually shaped by aggressive interactions. We studied behavioural variation in three ant species, which often co-occur in close proximity and occupy similar dominance ranks. We analysed how intra- and allospecific aggression, exploration and foraging activity vary under field conditions, namely with temperature and over time. Behaviours were assessed for 12 colonies per species, and four times each during several months. All behavioural traits consistently differed among colonies, but also varied over time and with temperature. These temperature-dependent and seasonal responses were highly species-specific. For example, foraging activity decreased at high temperatures in Formica rufibarbis, but not in Lasius niger; over time, it declined strongly in L. niger but much less in F. rufibarbis. Our results suggest that, owing to these species-specific responses, no species is always competitively superior. Thus, environmental and temporal variation effects a dynamic dominance hierarchy among the species, facilitating coexistence via the storage effect.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

公众号