高丰度地炸弹对蚕豆授粉的影响

Q3 Agricultural and Biological Sciences Journal of Pollination Ecology Pub Date : 2021-10-15 DOI:10.26786/1920-7603(2021)630
Cecilia Smith, Adriana Rendon, R. Barahona, Wladimir Moya
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引用次数: 3

摘要

在南美洲,豆类作物(蚕豆)的主要访客之一是入侵的大黄蜂。这种情况在智利尤其明显。1997年,智利首次引进了白刺藓,现在在该国大部分地区都很常见。在这项研究中,我们评估了两个种植季节蚕豆豆主要传粉媒介的活动,通过评估他们的访问率,并区分合法访问,可能导致授粉和花蜜掠夺。测定了昆虫对荚果和结实率的净贡献。我们记录了7种花卉访客。蜜蜂(Apis mellifera)是最常见的造访者(合法造访和抢劫),其次是B. terrestris。而地面小蠊的访花次数为抢蜜次数的87.19%。在花的整个生命周期中,陆生白蚁平均访问同一花的穿孔23次。一般来说,合法访问的频率随传粉者的身份和年份而变化。对于土刺,每朵花在其整个生命周期中平均得到0.95次合法的访问。开花第一天后,陆生白蚁的访花时间减少,表明资源枯竭。自花授粉比开放授粉的荚果数、总种子数和种子重更低。这表明开放授粉增加了繁殖成功率。我们的结论是,陆地芽孢杆菌对传粉的贡献相对较小,同时在花的整个生命周期中消耗花资源。
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Consequences of the high abundance of Bombus terrestris on the pollination of Vicia faba
One of the main visitors to Fabia bean crops (Vicia faba) in South America is the invasive bumblebee species Bombus terrestris. This is particularly true in Chile, where B. terrestris was first introduced in 1997 and is now common over much of the country. In this study, we evaluated the activity of the principal pollinators of V. faba over two cropping seasons by assessing their visitation rates while distinguishing between legitimate visits, likely to lead to pollination, and nectar robbery. We then determined the net contribution of insect visitation on pod and seed set. We recorded seven species of floral visitors. Most visits (legitimate visits and robbery) were from the honeybee (Apis mellifera), with B. terrestris being the next most common visitor. In the case of B. terrestris, 87.19% of visits were nectar robbery. On average, the same flower perforation was visited 23 times by B. terrestris during the flower's lifespan. In general, the frequency of legitimate visits varied with pollinator identity and year. For B. terrestris, each flower received an average of 0.95 legitimate visits during its entire lifespan. The time spent by B. terrestris visiting flowers for both nectar robbery or pollen collection decreased after the first day of flowering suggesting resource depletion. The number of pods, total seed number, and seed weight were lower where self rather than open pollination. This suggests that open pollination increased reproductive success. We conclude that B. terrestris was likely to contribute relatively little to pollination while at the same time depleting floral resources throughout the flowers’ lifespan.
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来源期刊
Journal of Pollination Ecology
Journal of Pollination Ecology Environmental Science-Ecology
CiteScore
1.50
自引率
0.00%
发文量
17
审稿时长
17 weeks
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