Journal of Pollination Ecology最新文献_第7页

Three options are better than two: compensatory nature of different pollination modes in Salix caprea L. 三种选择优于两种选择:不同授粉方式的代偿性;

Journal of Pollination Ecology Pub Date : 2021-07-09 DOI: 10.26786/1920-7603(2021)627

K. Ohashi, A. Jürgens

{"title":"Three options are better than two: compensatory nature of different pollination modes in Salix caprea L.","authors":"K. Ohashi, A. Jürgens","doi":"10.26786/1920-7603(2021)627","DOIUrl":"https://doi.org/10.26786/1920-7603(2021)627","url":null,"abstract":"Mixed pollination systems have been reported for many angiosperms. Here, we report on a dioecious willow, Salix caprea L., which employs three pollination modes, namely pollination by wind, nocturnal moths, and diurnal bees. In four field populations of S. caprea in Germany, we addressed the following questions: (a) How are the pollination modes affected by local mate availability? (b) What is the contribution of each pollination mode to seed set? (c) How does flower opening time affect pollination? We compared seed set among seven pollination treatments (wind pollination, diurnal pollination, nocturnal pollination, natural pollination, apomictic reproduction, daytime/night-time artificial pollination). Pollen limitation was observed across populations. On the other hand, limitations in mate availability affected the pollination modes differently. Insect pollination outperformed wind pollination in situations where nearby males were few or all positioned in the same direction from the females. The contribution of nocturnal moths was lower than that of the other pollen vectors. However, moth pollination worked complementarily with bee pollination in compensating for the lack of wind pollination. Furthermore, we found that the onset of flower anthesis peaked at sunset, and that cold night temperatures had no negative effect on seed set or pollen viability. Thus, nocturnal anthesis and prior pollination by moths may minimize male fitness loss due to pollen collection and grooming by bees. We suggest that S. caprea maximizes its fitness by combining multiple pollination modes that work in different environmental conditions, while optimizing the anthesis so that more pollen would be delivered to stigmas. ","PeriodicalId":30194,"journal":{"name":"Journal of Pollination Ecology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48172395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

High dependency of chilli fruit set on wild pollinators in southern India 印度南部辣椒果实高度依赖野生传粉昆虫

Journal of Pollination Ecology Pub Date : 2021-07-09 DOI: 10.26786/1920-7603(2021)629

Johanna Yourstone, Josefin Gunnarsson, Henrik G. Smith, H. Somanathan

{"title":"High dependency of chilli fruit set on wild pollinators in southern India","authors":"Johanna Yourstone, Josefin Gunnarsson, Henrik G. Smith, H. Somanathan","doi":"10.26786/1920-7603(2021)629","DOIUrl":"https://doi.org/10.26786/1920-7603(2021)629","url":null,"abstract":"Ongoing pollinator declines threaten the production of many entomophilous crops. Recent reports that yields of animal-pollinated crops in India are increasing less than pollinator-independent ones suggest the occurrence of pollen limitation. We experimentally evaluated if production of the common food crop chilli benefits from insect pollination and if crop production is constrained by lack of pollinators under field conditions. Experiments were conducted in eleven chilli fields distributed across a semi-arid agricultural landscape in Andhra Pradesh, India. The experimental treatments included open controls, open pollen-supplemented flowers, and bagged flowers for pollinator exclusion. The fruit set from the two open treatments (control and pollen supplementation) was about three times higher than that from the exclusion treatment, suggesting strong dependence on insect pollination. Control supplementation treatments did not differ, which suggests that there normally is sufficient pollination for chilli production in the area. Bees contributed 98% of flower visits. Flower visitor abundance correlated with higher fruit set, but only significantly so in the pollen supplemented treatment. While previous studies that are mostly conducted in greenhouse settings suggest that chilli reproduction does not depend much on animal pollination, our field study confirms that presence of animal pollinators increases fruit set. Future research should establish if this also applies to fruit quality and total yield. Our study highlights the importance of field-realistic experiments and warrants research on pollinator dependencies of other crops. The results have implications for crop production in an area where pollinator levels may be sufficiently high for crop pollination today but possibly not in the future due to environmental change. ","PeriodicalId":30194,"journal":{"name":"Journal of Pollination Ecology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49459253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Announcements for JPE JPE公告

Journal of Pollination Ecology Pub Date : 2021-07-09 DOI: 10.26786/JPE.V28I0.654

J. Thomson

引用次数: 0

Editorial: How worthwhile are pollination networks? 社论:授粉网络有多大价值?

Journal of Pollination Ecology Pub Date : 2021-07-09 DOI: 10.26786/1920-7603(2021)652

James Thomson

引用次数: 3

Linking pollinator occurrence in field margins to pollinator visitation to a mass-flowering crop 将田间边缘传粉昆虫的出现与传粉昆虫造访大量开花作物联系起来

Journal of Pollination Ecology Pub Date : 2021-07-09 DOI: 10.26786/1920-7603(2021)623

M. Toivonen, I. Herzon, Jenni Toikkanen, M. Kuussaari

{"title":"Linking pollinator occurrence in field margins to pollinator visitation to a mass-flowering crop","authors":"M. Toivonen, I. Herzon, Jenni Toikkanen, M. Kuussaari","doi":"10.26786/1920-7603(2021)623","DOIUrl":"https://doi.org/10.26786/1920-7603(2021)623","url":null,"abstract":"Uncultivated field margins are important refugia for pollinating insects in agricultural landscapes. However, the spill-over of pollination services from field margins to adjacent crops is poorly understood. This study (i) examined the effects of landscape heterogeneity on pollinator occurrence in permanent field margins and pollinator visitation to adjacent mass-flowering turnip rape (Brassica rapa ssp. oleifera) in boreal agricultural landscapes, and (ii) tested whether pollinator abundance and species richness in field margins predict abundance and species richness of crop visitors. Pollinators visiting the crop were more affected by landscape heterogeneity than pollinators in adjacent margins. Species richness, total abundance, and the abundance of syrphid flies visiting the crop increased with increasing landscape heterogeneity, whereas, in field margins, landscape heterogeneity had little effect on pollinators. In field-dominated homogeneous landscapes, wild pollinators rarely visited the crop even if they occurred in adjacent margins, whereas in heterogeneous landscapes, differences between the two habitats were smaller. Total pollinator abundance and species richness in field margins were poor predictors of pollinator visitation to adjacent crop. However, high abundances of honeybees and bumblebees in margins were related to high numbers of crop visitors from these taxa. Our results suggest that, while uncultivated field margins help pollinators persist in boreal agricultural landscapes, they do not always result in enhanced pollinator visitation to the adjacent crop. More studies quantifying pollination service delivery from semi-natural habitats to crops in different landscape settings will help develop management approaches to support crop pollination. ","PeriodicalId":30194,"journal":{"name":"Journal of Pollination Ecology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49498330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Taxon-specific temporal shifts in pollinating insects in mass-flowering crops and field margins in Ireland 爱尔兰大量开花作物和田地边缘传粉昆虫的分类群特异性时间变化

Journal of Pollination Ecology Pub Date : 2021-07-09 DOI: 10.26786/1920-7603(2021)628

Irene Bottero, S. Hodge, J C Stout

{"title":"Taxon-specific temporal shifts in pollinating insects in mass-flowering crops and field margins in Ireland","authors":"Irene Bottero, S. Hodge, J C Stout","doi":"10.26786/1920-7603(2021)628","DOIUrl":"https://doi.org/10.26786/1920-7603(2021)628","url":null,"abstract":"In intensively cropped agricultural landscapes, the vegetation in edges and hedges (henceforth “field margins”) represents an important semi-natural habitat providing fundamental resources for insect pollinators. We surveyed the pollinating insects associated with two mass-flowering crops, apple and oilseed rape, and compared the insect fauna of the main crop with that in the field margins in the grass-dominated agricultural landscapes of Ireland. Different insect groups responded differently to the presence of the flowering crop, with honey and bumble bees more abundant in crops than margins during crop flowering, but more hover flies and butterflies in margins throughout. The composition of the insect assemblage also shifted over time due to taxon-specific changes in abundance. For example, solitary bees were most abundant early in the season, whereas hover flies peaked, and butterflies declined, in mid-summer. The temporal shift in insect community structure was associated with parallel changes in the field margin flora, and, although we found no relationship between insect abundance and abundance of field margin flowers, Bombus abundance and total insect abundance were positively correlated with floral diversity. After the crop flowering period, floral abundance and diversity was maintained via margin plants, but by late summer, floral resources declined. Our results confirm the importance of field margins for insect pollinators of entomophilous crops set within grass-dominated landscapes, even during the crop flowering period, and provide additional support for agri-environment schemes that protect and/or improve field margin biodiversity. The results also demonstrate that although shifts in insect and plant communities may be linked phenologically there may not always be simple relationships between insect and floral abundance and richness. ","PeriodicalId":30194,"journal":{"name":"Journal of Pollination Ecology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44163892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Escaped oilseed rape: Occurrence in the agricultural landscape and potential pollen-mediated gene flow from crop oilseed rape 逃逸油菜：农业景观中的发生和作物油菜花粉介导的潜在基因流

Journal of Pollination Ecology Pub Date : 2021-07-09 DOI: 10.26786/1920-7603(2021)631

Tina D'hertefeldt, Catarina Anderberg Haglund, Jessica Malm, Åsa Lankinen

{"title":"Escaped oilseed rape: Occurrence in the agricultural landscape and potential pollen-mediated gene flow from crop oilseed rape","authors":"Tina D'hertefeldt, Catarina Anderberg Haglund, Jessica Malm, Åsa Lankinen","doi":"10.26786/1920-7603(2021)631","DOIUrl":"https://doi.org/10.26786/1920-7603(2021)631","url":null,"abstract":"To assess the role of feral oilseed rape (OSR) plants as resources for pollinators and avenues for gene flow, we compared occurrence of feral populations in standardized agricultural landscapes, using a landscape ecological approach. The occurrence of feral and volunteer populations was investigated in relation to differences in road length and width, number of OSR fields, and landscape scale. The potential for pollen-mediated gene flow from crop to feral oilseed rape was investigated with fluorescent dye in a field experiment. Moreover, greenhouse estimates of pollen germination rate and pollen tube growth rate were performed to get an indication of siring success in crop and feral plants. Escaped OSR occurred in 14 out of the 16 investigated landscapes, and feral populations were more common alongside large roads than small roads in large-scale landscapes. The number of plants in a habitat ranged from 1-160 individuals, with 1-19 habitats per landscape. In the field experiment with fluorescent dye, no transfer of dye was detected during early flowering in May. At the end of the flowering period in June, transfer of dye was found in 71.4% of the feral plants, showing that significant transfer, most likely by pollinators, occurred from the field to the feral plants. There was no difference in pollen germination rate between crop and feral plants. Pollen tube growth rate was significantly higher in feral oilseed rape than in the crop (P < 0.001). Our results contribute to increased understanding of i) the utilization of feral populations by pollinators in an intensively farmed agricultural landscape, and ii) crop-feral gene flow within OSR. ","PeriodicalId":30194,"journal":{"name":"Journal of Pollination Ecology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41534727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pollination of Nypa fruticans (Wurmb.) in a South Florida botanic garden 南佛罗里达州一个植物园中紫穗Nypa fruticans（Wurmb.）的授粉

Journal of Pollination Ecology Pub Date : 2021-05-17 DOI: 10.26786/1920-7603(2021)624

I. Valdes, Joanna M. Tucker Lima, L. Noblick

{"title":"Pollination of Nypa fruticans (Wurmb.) in a South Florida botanic garden","authors":"I. Valdes, Joanna M. Tucker Lima, L. Noblick","doi":"10.26786/1920-7603(2021)624","DOIUrl":"https://doi.org/10.26786/1920-7603(2021)624","url":null,"abstract":"When plants are removed from their native habitat, reproduction can be compromised if pollinators are absent, especially when plant-pollinator interactions are species-specific and the plant is self-incompatible. To avoid these pitfalls, botanic gardens often use hand pollination to ensure reproductive success of their living collections, an important aspect of ex-situ conservation. The nipa palm, Nypa fruticans, presents an interesting case study of pollination in a botanic garden and a plant’s ability to successfully reproduce outside its native range without assisted pollination. Nypa fruticans has been growing at Montgomery Botanical Center (MBC) in South Florida since 1984, but for years required hand pollination to produce viable fruit. A recent shift from hand pollination to unassisted pollination suggests that this palm has found an alternative to fertilize its flowers. We investigate possible pollinators and new opportunities for pollination outside the palm’s native range. Rather than the insects typically associated with N. fruticans pollination in its native range in Southeast Asia (i.e., flies and beetles), ants, specifically Paratrechina longicornis, were overwhelmingly the most abundant visitors to nipa palm inflorescences at MBC and likely represent an important pollinator or facilitator of pollination at the garden. Pollination research at botanic gardens complements in-situ field studies and provides important insights into the flexibility of pollination systems to achieve reproductive success outside a plant’s native range. ","PeriodicalId":30194,"journal":{"name":"Journal of Pollination Ecology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48394316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Insect pollination and sustainable agriculture in Sub-Saharan Africa 撒哈拉以南非洲的昆虫授粉和可持续农业

Journal of Pollination Ecology Pub Date : 2021-03-23 DOI: 10.26786/1920-7603(2021)615

K. Tolera, G. Ballantyne

引用次数: 1

Novel data support model linking floral resources and honey bee competition with bumble bee abundances in coastal scrub 沿海灌丛植物资源、蜜蜂竞争与大黄蜂丰度的新数据支持模型

Journal of Pollination Ecology Pub Date : 2021-03-23 DOI: 10.26786/1920-7603#625

D. Thomson

{"title":"Novel data support model linking floral resources and honey bee competition with bumble bee abundances in coastal scrub","authors":"D. Thomson","doi":"10.26786/1920-7603#625","DOIUrl":"https://doi.org/10.26786/1920-7603#625","url":null,"abstract":"Growing evidence supports that many bee populations are declining, with potentially serious consequences for pollination services. Mechanistic models that predict bee abundances from drivers like floral resource availability can be a powerful way to understand and address declines, but remain rare and largely unvalidated. I used temporally and spatially novel data to validate previous analyses linking bumble bee (Bombus spp.) declines in California coastal scrub with loss of floral resources, mediated by drought and competition with non-native honey bees (Apis mellifera). New observations from 2015-2018 were combined with data from 1999-2014 to further test these mechanistic hypotheses and evaluate predictions of a statistical model for Bombus abundances. As predicted, positive associations between spring rainfall and floral abundances and between Bombus and key forage plants were consistent between time periods. Increased A. mellifera abundance corresponded with reduced Bombus use of the most abundant forage plant and lower Bombus abundances in the following year. Quantitative predictions from the Bombus statistical model previously developed for 1999-2014 were relatively unbiased and strongly rank correlated with either spatially or temporally novel data. However, the model consistently underpredicted Bombus abundances when both flower patch and time period were novel. Overall, four new years of data further strengthen evidence that loss of floral resources due to drought and competition with feral Apis mellifera is an important cause of Bombus decline in this habitat. These findings reinforce the value of even simple models that are mechanistically framed, both in understanding past patterns of change and for qualitative prediction. ","PeriodicalId":30194,"journal":{"name":"Journal of Pollination Ecology","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43159424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2