Biological interactions on Primula sieboldii

西氏报春花的生物相互作用

• 批准号: 08304040
• 负责人: WASHITANI Izumi
• 金额: $ 6.66万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08304040/
• 关键词: Primula sieboldii; bumblebee; biological interaction; pollinator; heterostyly; reproductive success; pollinator therapy; conservation ecology; 累殖成功; 送粉昆虫; 食害昆虫; トラマルハナバチ; 分断孤立化; 保全

Seed set and various biological and other environmental factors potentially attecting reproductive success were compared among 20 P.sieboldii local populations in a fragmented landscape of Hidaka region, southern Hokkaido and also in a metapopulation of a mountainous region in central Honshu . Although various biological agents including herbivores and pathogens affected the fertility of the plants, seed set of the populations was strongly dependent on the population size and pollinator availability which can be assessed by craw marks left on the flower petals by long-tongued bumblebee queens. Among the 20 populations investigated in Hidaka region, negligible seeds were set in smaller populations consisting of less than four genets, while in larger populations, population mean seed set strongly depended on pollinator availability especially in the year with generally low pollinator activities. Not only quantity of the seeds, but also their quality, i.e., fitness of the seeds which were barely produced on isolated mother plants of P sieboldii are also significantly lower than those of the seeds from less isolated mother plants having potential mating partner(s) in their vicinity.

在北海道南部日高地区的一个破碎景观中，以及在本州中部山区的一个集合种群中，比较了20个天女木兰地方种群的结实率和各种可能影响繁殖成功的生物学和其他环境因素。虽然各种生物制剂，包括草食动物和病原体影响的植物的生育力，种子集的人口是强烈依赖于人口规模和传粉者的可用性，可以评估由长舌熊蜂女王的花瓣上留下的爬痕。在日高地区调查的20个居群中，小于4个基因组的小居群结实率可忽略不计，而在较大居群中，居群平均结实率强烈依赖于传粉者的可用性，特别是在传粉者活动普遍较低的年份。不仅是种子的数量，而且是它们的质量，即，在隔离的天女木兰母株上几乎不产生的种子的适合度也显著低于来自在其附近具有潜在交配伴侣的隔离较少的母株的种子的适合度。

项目成果

Washitani, I., Okayama, K., Sato, H.Takahashi and T.Ogushi: "Spatial variation in female fertility related to interactions with flower consumers and pathogens in a forest metapopulation of Primula sieboldii." Researches on Population Ecology. 38. 249-256

Washitani, I.、Okayama, K.、Sato、H.Takahashi 和 T.Ogushi：“雌性生育力的空间变异与报春花森林混合种群中花卉消费者和病原体的相互作用有关。”

鷲谷いづみ: "地域生態系をおぼやかす帰化生物" 日経サイエンス. 6月号. 50-59 (1996)

Izumi Washiya：“掩盖当地生态系统的自然化生物”《日经科学》6 月号（1996 年）。

Maki.M.: "Differences in plant size and flower production" Canadian Journal of Botany. 47. 150-153 (1996)

Maki.M.：“植物大小和花卉产量的差异”加拿大植物学杂志。

今橋美千代・鷲谷いづみ: "土壌シ-ドバンクを用いた河畔冠水草原の復元" 保全生態学研究. 1. 131-147 (1996)

Michiyo Imahashi 和 Izumi Washiya：“利用土壤种子库恢复河边淹没的草地”保护生态学研究。1. 131-147 (1996)。

Ohgushi.T.& Sawada: "A shift toward early reproduclion in an itroduced berpivtrong" Ecological Entomology. 22. 90-96 (1997)

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