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在高质量的景观中,蜂家族的生存率提高

Claire Carvell¹, Andrew F G Bourke², Stephanie Dreier^3,4

¹NERC Centre for Ecology &Hydrology, Benson Lane, Crowmarsh Gifford, Wallingford OX10 8BB, UK.

|March 16, 2017

概括

黄蜂 (Bombus spp.) 其他它们靠近殖民地的高价值食息地, 增加植物资源的保护工作可以帮助野生授粉者在农业景观中生存.

科学领域:

生态学
保护生物学
昆虫学

背景情况:

昆虫授粉者,特别是大黄蜂 (Bombus spp. 由于农业的强化和息地丧失,它们面临着全球性的衰退.
了解景观变化如何影响人口的关键参数,如跨阶段生存,对于有效的保护计划至关重要.
监测野生蜂群是一项挑战,目前对影响它们在生命阶段之间生存的因素的知识有限.

研究的目的:

调查蜂家族的息地质量与年间生存之间的关系.
提供关于景观特征如何影响黄蜂种群持续性的经验证据.

主要方法:

采用了多方面的方法,结合了息地操纵,土地使用调查,分子遗传学和人口/空间建模.
分析了三种大黄蜂种类的野外种群中跨生命阶段 (从夏季工人到春季女王) 的家族血统的生存情况.
评估了在特定距离 (250-1000米) 内的食息地的影响.

主要成果:

蜜蜂家族从夏季工人阶段到春季女王阶段的生存率随着高价值食息地占比的增加而显著增加.
在出生殖民地250-1000米以内春季花资源的存在与生存率有正相关性.
息地质量显然影响着殖民地循环阶段之间的生存和持续性.

结论:

息地质量,特别是植物资源的可用性,是大黄蜂生存和种群持续性的关键因素.
在整个季节内增强花资源的景观规模保护干预措施可以对农业环境中的野生授粉者产生积极影响.
这些发现支持有针对性的息地恢复工作,以加强大黄蜂种群和减轻农业景观的下降.

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