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Xinqiang Xi Liang Zhang Beibei Zhang Yuran Dong Karl J. Niklas Shucun Sun 《Ecological Entomology》2019,44(5):717-720
1. Female insects lay eggs on low‐quality plants, resulting in progeny with no or low reproductive potential; this is referred to as ‘suboptimal oviposition’ in this study. 2. Here, it is reported that suboptimal oviposition of a tephritid fly species (Tephritis femoralis) supports the populations of parasitoid wasp species in a Tibetan alpine meadow. 3. Suboptimal oviposition was confirmed because the adult flies emerging from Asteraceae species Anaphalis flavescens flowerheads did not survive cold winters. 4. DNA barcoding of puparia indicated that tephritid larvae developing from suboptimal oviposition hosted populations of at least five parasitoid wasp species. Consequently, suboptimal oviposition has significant effects on parasitoid population dynamics and species diversity. 相似文献
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目的:分析探讨急性脑梗塞后肺部感染的相关因素及其预后,以有利于进一步预防及治疗。方法:对2009年5月至2011年5月收治的258例脑梗塞急性期患者的临床资料进行回顾性调查分析,根据是否合并肺部感染分为肺部感染组和对照组,分析肺部感染的危险因素和其预后的相关性。结果:258例脑梗塞患者中发生肺部感染45例,感染率为17.4%,其中心源性脑栓塞占67%。与对照组相比,急性脑梗塞后肺部感染患者年龄偏高(分别为74.2±13.2和69.8±12.7,P<0.021),住院过程中的误吸(OR5.513)及住院时的NIHSS评分(OR1.090)是独立性危险因素,而肺部感染是加重病情的独立性危险因素(OR5.838)。结论:对于高龄、入院时NIHSS评分高、误吸和心源性急性脑梗塞患者应及早预防,已发生肺部感染者应当给予积极有效的治疗。 相似文献
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