Do current vampire bat (Desmodus rotundus) population control practices pose a threat to Dekeyser's nectar bat's (Lonchophylla dekeyseri) long-term persistence in the Cerrado?
Do current vampire bat (Desmodus rotundus) population control practices pose a threat to Dekeyser's nectar bat's (Lonchophylla dekeyseri) long-term persistence in the Cerrado?
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DOI：
10.3161/150811010x537855
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发表时间：
2010-01-01
影响因子：
1
通讯作者：
Machado, Ricardo B.
中科院分区：
文献类型：
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作者：
Aguiar, Ludmilla M. S.;Brito, Daniel;Machado, Ricardo B.
塞拉多正在迅速失去农业、牧场和城市化的空间。目前通过消灭吸血蝙蝠种群来控制狂犬病爆发的管理做法可能会使其他蝙蝠物种处于危险之中。我们的目标是评估，如果目前的吸血蝙蝠种群控制措施可能会构成威胁Lonchophylla dekeyseri的持久性，塞拉多的地方性蝙蝠。我们使用了VORTEX程序来模拟不同的吸血蝙蝠管理场景，导致低（25%），中（50%）或高（75%）的偶然死亡率L。dekeyseri种群。近交衰退已被确定为对物种的威胁，因此我们也模拟了评估这种影响的情景。结果表明，目前的吸血蝙蝠管理措施对L。德凯瑟里。在所有情况下，观察到人口规模明显下降（即使生存概率没有下降）。对于中等和高意外死亡率管理方案，我们还观察到生存概率和遗传多样性下降。在那些同时评估吸血蝙蝠管理和近亲繁殖抑郁症的场景中，模型表明这种相互作用导致了更明显的下降。塞拉多的栖息地丧失和破碎化是严重的威胁，已经对L。德凯瑟里。不幸的是，如果不改变目前针对吸血蝙蝠的种群控制措施，不适当的狂犬病管理可能会成为该物种长期生存的致命一击。
The Cerrado is rapidly losing space to agriculture, pastures and urbanization. Current management practices to control rabies outbreaks through the eradication of vampire bat populations may put other bat species in peril. Our objective is to evaluate if the current vampire bat population control practices could pose a threat to Lonchophylla dekeyseri's persistence, an endemic bat of the Cerrado. We used the VORTEX program to model different vampire bat management scenarios, causing low (25%), medium (50%) or high (75%) incidental mortality to L. dekeyseri populations. Inbreeding depression has been identified as a threat to the species, therefore we also modeled scenarios evaluating such effects. Results show that current vampire bat management practices have serious impacts on populations of L. dekeyseri. In all cases marked declines in population sizes were observed (even when there was no decline in survival probabilities). For medium and high incidental mortality management scenarios, we also observed decreases in survival probability and in genetic diversity. In those scenarios evaluating vampire bat management and inbreeding depression together, the models suggest that such interaction results in more pronounced declines. Habitat loss and fragmentation in the Cerrado are severe threats and have already negatively impacted L. dekeyseri. Unfortunately, if currentpopulation control practices dealing with vampire bats are not changed, inappropriate rabies management may be the coup de grace to the long-term persistence of this species.