Global decline of bumblebees is phylogenetically structured and inversely related to species range size and pathogen incidence
Global decline of bumblebees is phylogenetically structured and inversely related to species range size and pathogen incidence
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DOI：
10.1098/rspb.2017.0204
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发表时间：
2017-07-26
影响因子：
4.7
通讯作者：
Aizen, Marcelo A.
中科院分区：
文献类型：
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作者：
Arbetman, Marina P.;Gleiser, Gabriela;Aizen, Marcelo A.
保护生物学可以从将系统发育的角度纳入物种灭绝风险的模式和驱动因素的分析中获益匪浅。我们应用这种方法来分析模式的熊蜂（熊蜂）下降。我们建立了一个数据库，代表了全球约260种已知物种的43%，其中包括根据国际自然保护联盟红色名录类别和标准进行的物种灭绝风险评估，以及可能与大黄蜂衰退相关的物种特征信息。我们量化了下降，范围大小，舌头长度和寄生虫存在的系统发育信号的强度。总的来说，大约三分之一的被评估的熊蜂正在下降，下降的物种并不是随机分布在熊蜂种群中。敏感种属在Thoracobombus亚属中过度代表（约100%）。64%）和亚属Pyrobombus的代表性不足（约。6%）。系统发育逻辑回归分析显示，地理分布范围较小的物种和三种体内寄生虫（即，Crithidia bombi，Nosema spp.）或Locustacarus buchneri）特别脆弱。如果大多数来自受威胁分支的物种，特别是那些起源于基节的物种，最终灭绝，大黄蜂的进化历史将被深深侵蚀。限制分布的物种的栖息地应该得到保护，病原体耐受性/抗性作为对付病原体的机制的重要性需要迫切研究。
Conservation biology can profit greatly from incorporating a phylogenetic perspective into analyses of patterns and drivers of species extinction risk. We applied such an approach to analyse patterns of bumblebee (Bombus) decline. We assembled a database representing approximately 43% of the circa 260 globally known species, which included species extinction risk assessments following the International Union fo Conservation of Nature Red List categories and criteria, and information on species traits presumably associated with bumblebee decline. We quantified the strength of phylogenetic signal in decline, range size, tongue length and parasite presence. Overall, about one-third of the assessed bumblebees are declining and declining species are not randomly distributed across the Bombus phylogeny. Susceptible species were over-represented in the subgenus Thoracobombus (approx. 64%) and under-represented in the subgenus Pyrobombus (approx. 6%). Phylogenetic logistic regressions revealed that species with small geographical ranges and those in which none of three internal parasites were reported (i.e. Crithidia bombi, Nosema spp. or Locustacarus buchneri) were particularly vulnerable. Bumblebee evolutionary history will be deeply eroded if most species from threatened clades, particularly those stemming from basal nodes, become finally extinct. The habitat of species with restricted distribution should be protected and the importance of pathogen tolerance/resistance as mechanisms to deal with pathogens needs urgent research.