PubAg

Main content area

You searched for: Subject "pollinators" Remove constraint Subject: "pollinators"
Start Over

Search

4,972  Search Results

« Previous | 1 - 20 of 4,972 |
Number of results to display per page

Search Results

1. Asynchronous range shifts drive alpine plant–pollinator interactions and reduce plant fitness

Author:
Richman, Sarah K.; Levine, Jonathan M.; Stefan, Laura; Johnson, Christopher A.
Source:
Global change biology 2020 v.26 no.5 pp. 3052-3064
ISSN:
1354-1013
Subject:
pollinators,   etc   ; Bombus; alpine meadows; altitude; case studies; climate; global warming; plant communities; plant reproduction; prediction; temperature;     Show all 11 Subjects
Abstract:
... Climate change is driving species' range shifts, which are in turn disrupting species interactions due to species‐specific differences in their abilities to migrate in response to climate. We evaluated the consequences of asynchronous range shifts in an alpine plant–pollinator community by transplanting replicated alpine meadow turfs downslope along an elevational gradient thereby introducing them ...
DOI:
10.1111/gcb.15041

2. Clonality as a key but overlooked driver of biotic interactions in plants

Author:
Bittebiere, Anne-Kristel; Benot, Marie-Lise; Mony, Cendrine
Source:
Perspectives in plant ecology, evolution and systematics 2020 v.43 pp. 125510
ISSN:
1433-8319
Subject:
pollinators,   etc   ; biodiversity; clones; ecological footprint; genetic variation; herbivores; hormones; mutualism; pathogens; plant communities;     Show all 10 Subjects
Abstract:
... Most plants are clonal i.e. able to laterally propagate by producing new genetically identical ramets connected by specialized clonal organs. Clonality determines ramet aggregation patterns, the presence of physical connections between ramets, the sharing of resources, hormones, and signaling molecules within the clonal fragment. We thus argue that clonal traits drive not only the individual plant ...
DOI:
10.1016/j.ppees.2020.125510

3. Modularity and evolution of flower shape: the role of function, development, and spandrels in Erica

Author:
Reich, Dieter; Berger, Andreas; von Balthazar, Maria; Chartier, Marion; Sherafati, Mahboubeh; Schönenberger, Jürg; Manafzadeh, Sara; Staedler, Yannick M.
Source:
Thenew phytologist 2020 v.226 no.1 pp. 267-280
ISSN:
0028-646X
Subject:
pollinators,   etc   ; Erica; ancestry; computed tomography; evolution; flower morphology; flowers; geometry; models; morphometry; pollen; pollination;     Show all 12 Subjects
Abstract:
... Flowers have been hypothesized to contain either modules of attraction and reproduction, functional modules (pollination‐effecting parts) or developmental modules (organ‐specific). Do pollination specialization and syndromes influence floral modularity? In order to test these hypotheses and answer this question, we focused on the genus Erica: we gathered 3D data from flowers of 19 species with div ...
DOI:
10.1111/nph.16337
PubMed:
31765023
PubMed Central:
PMC7065081

4. Pollinator effectiveness of a specialist bee exploiting a generalist plant—tracking pollen transfer by Heriades truncorum with quantum dots

Author:
Konzmann, Sabine; Kluth, Margareta; Karadana, Deniz; Lunau, Klaus
Source:
Apidologie 2020 v.51 no.2 pp. 201-211
ISSN:
0044-8435
Subject:
pollinators,   etc   ; Inula; Megachilidae; Pulicaria; abdomen; bees; females; florets; forage; foraging; pollen; pollen germination; quantum dots;     Show all 13 Subjects
Abstract:
... Heriades truncorum (Megachilidae) is a specialist bee that forages on Asteraceae and collects pollen by tapping its abdomen on pollen-presenting florets which places the grains directly in the ventral scopa. We tracked pollen transfer by female H. truncorum between conspecific inflorescences of Inula ensifolia and Pulicaria dysenterica by labelling pollen with quantum dots. On average, bees transf ...
DOI:
10.1007/s13592-019-00700-0

5. How floral displays affect geitonogamy in an upward foraging bumblebee‐pollinated protandrous plant

Author:
Zhu, Xing‐Fu; Yang, Ji‐Qin; Li, Qing‐Jun
Source:
Journal of systematics and evolution 2020 v.58 no.2 pp. 182-188
ISSN:
1674-4918
Subject:
pollinators,   etc   ; Bombus; evolution; flowers; foraging; geitonogamy; insect pollination; pollen; probability; protandry;     Show all 10 Subjects
Abstract:
... Reducing geitonogamy (pollen transfer among flowers within the same plant) has been suggested as a major selective force for plants with multiple flowers. The occurrence of geitonogamy is generally different among flowers within inflorescences; however, no researchers have examined whether plants enlarge their display size without increasing the possibility of geitonogamy by presenting more flower ...
DOI:
10.1111/jse.12487

6. Defence compounds in pollen: why do they occur and how do they affect the ecology and evolution of bees?

Author:
Rivest, Sébastien; Forrest, Jessica R. K.
Source:
Thenew phytologist 2020 v.225 no.3 pp. 1053-1064
ISSN:
0028-646X
Subject:
pollinators,   etc   ; Angiospermae; animals; bees; ecology; evolution; germ cells; males; microorganisms; plant tissues; pleiotropy; pollen; reproduction; toxicity;     Show all 14 Subjects
Abstract:
... Pollen plays two important roles in angiosperm reproduction, serving as a vehicle for the plant’s male gametes, but also, in many species, as a lure for pollen‐feeding animals. Despite being an important food source for many pollinators, pollen often contains compounds with known deterrent or toxic properties, as documented in a growing number of studies. Here we review these studies and discuss t ...
DOI:
10.1111/nph.16230

7. Phenotypic selection mosaic for flower length influenced by geographically varying hawkmoth pollinator proboscis length and abiotic environment

Author:
Soteras, Florencia; Rubini Pisano, Malén Aluhé; Bariles, Julieta Belén; Moré, Marcela; Cocucci, Andrea Arístides
Source:
Thenew phytologist 2020 v.225 no.2 pp. 985-998
ISSN:
0028-646X
Subject:
pollinators,   etc   ; Caesalpinia gilliesii; Sphingidae; cold; environmental factors; flowers; geographical variation; phenotypic selection; proboscis;     Show all 9 Subjects
Abstract:
... Biotic and abiotic context may affect the intensity of interspecific interactions and subsequently drive locally particular phenotypic selection patterns on interacting traits. We evaluated the geographical variation of matching traits of the brush‐type flowers of Caesalpinia gilliesii and of the proboscis length of its guild of hawkmoth pollinators, as well as their relationship with environmenta ...
DOI:
10.1111/nph.16192

8. Pollination biology in Roepera (Zygophyllaceae): How flower structure and shape influence foraging activity

Author:
Naghiloo, Somayeh; Bellstedt, Dirk U.; Claßen‐Bockhoff, Regine
Source:
Plant species biology 2020 v.35 no.1 pp. 72-80
ISSN:
0913-557X
Subject:
pollinators,   etc   ; Apis mellifera; Zygophyllaceae; flowers; foraging; honey bees; morphometry; nectar; photography; pollen; pollination; proboscis;     Show all 12 Subjects
Abstract:
... The foraging behavior of bees is a complex phenomenon that depends on numerous physical features of flowers. Of particular importance are accessibility of floral rewards, floral proportions, symmetry and orientation. The flowers of Roepera are characterized by the presence of staminal scales (SS), which play an important role in nectar protection. We studied two species of Roepera with different s ...
DOI:
10.1111/1442-1984.12262

9. Automated calculation of spectral-reflectance marker-points to enable analysis of plant colour-signalling to pollinators

Author:
Dorin, Alan; Shrestha, Mani; Herrmann, Matthieu; Burd, Martin; Dyer, Adrian G.
Source:
MethodsX 2020 v.7 pp. 100827
ISSN:
2215-0161
Subject:
pollinators,   etc   ; algorithms; automation; color; computer software; eyes; flowers; insects; reflectance; visual perception; wavelengths;     Show all 11 Subjects
Abstract:
... A spectral reflectance curve for a coloured surface can be constructed from a set of radiation reflectance value measurements made across the spectrum at discrete wavelengths. The curve gives an indication of the pattern of light entering the eye of an organism viewing an illuminated object. Marker points represent the positions along a reflectance curve at which sharp transitions in reflectance o ...
DOI:
10.1016/j.mex.2020.100827
PubMed:
32257838
PubMed Central:
PMC7125344

10. Delivering Integrated Pest and Pollinator Management (IPPM)

Author:
Egan, Paul A.; Dicks, Lynn V.; Hokkanen, Heikki M.T.; Stenberg, Johan A.
Source:
Trends in plant science 2020 v.25 no.6 pp. 577-589
ISSN:
1360-1385
Subject:
pollinators,   etc   ; control methods; decision making; ecosystem services; integrated pest management; monitoring; pest control; pesticide law; pesticides; pests; pollination; sustainable agriculture;     Show all 12 Subjects
Abstract:
... The need to reduce pollinator exposure to harmful pesticides has led to calls to expedite the adoption of integrated pest management (IPM). We make the case that IPM is not explicitly ‘pollinator friendly’, but rather must be adapted to reduce impacts on pollinators and to facilitate synergies between crop pollination and pest control practices and ecosystem services. To reconcile these diverse ne ...
DOI:
10.1016/j.tplants.2020.01.006

11. Bats and moths contribute to the reproductive success of the columnar cactus Pilosocereus leucocephalus

Author:
Miranda-Jácome, Antonio; Rodríguez-García, Ricardo; Munguía-Rosas, Miguel A.
Source:
Journal of arid environments 2020 v.174 pp. 103990
ISSN:
0140-1963
Subject:
pollinators,   etc   ; Chiroptera; Pilosocereus; cacti and succulents; dry environmental conditions; dry tropics; flowers; fruit set; fruits; moths; pollination; reproductive success; Mexico;     Show all 13 Subjects
Abstract:
... The pollination systems of columnar cacti in the dry tropics are often thought to be highly specialized to bats. This specialization is generally inferred when flowers that are only exposed to the activity of nocturnal visitors set fruit and seed. Although moths are also common visitors to the flowers of columnar cacti at night, it is generally thought that their contribution to the reproductive s ...
DOI:
10.1016/j.jaridenv.2019.06.001

12. Preharvest Detection and Postharvest Incidence of Phlyctema vagabunda on ‘Cripps Pink’ Apples in South Africa

Author:
Den Breeyen, Alana; Rochefort, Jessica; Russouw, Andre; Meitz-Hopkins, Julia; Lennox, Cheryl L.
Source:
Plant disease 2020 v.104 no.3 pp. 841-846
ISSN:
0191-2917
Subject:
pollinators,   etc   ; Malus; apples; conidia; disease incidence; fruit growing; fruits; fungi; growing season; orchards; postharvest diseases; postharvest losses; South Africa;     Show all 13 Subjects
Abstract:
... Phlyctema vagabunda is responsible for significant postharvest losses in ‘Cripps Pink’ apples in South Africa. The first objective of this study was to determine the presence and incidence of P. vagabunda on stored commercial ‘Cripps Pink’ apple in five major pome fruit growing regions in the Western Cape. As the fungus remains latent until postharvest, the second objective was to develop a rapid ...
DOI:
10.1094/PDIS-04-19-0818-RE

13. Can phenotypic selection on floral traits explain the presence of enigmatic intermediate individuals in sympatric populations of Platanthera bifolia and P. chlorantha (Orchidaceae)?

Author:
Ambroise, Valentin; Esposito, Fabiana; Scopece, Giovanni; Tyteca, Daniel
Source:
Plant species biology 2020 v.35 no.1 pp. 59-71
ISSN:
0913-557X
Subject:
pollinators,   etc   ; Platanthera; assortative mating; females; flower morphology; multivariate analysis; phenology; phenotype; phenotypic selection; reproductive isolation; reproductive success; sympatry;     Show all 12 Subjects
Abstract:
... Pollinators represent one of the main agents of selection on floral traits. Here, we estimated phenotypic selection on floral morphology and phenology in a sympatric population of two orchid species, Platanthera bifolia and P. chlorantha, including enigmatic individuals with intermediate column morphology (as reflected by the distance between viscidia and caudicle length, two traits involved in as ...
DOI:
10.1111/1442-1984.12257

14. On the low reproductive success of two Cyrtopodium species (Orchidaceae: Cyrtopodiinae): The relative roles of biotic and abiotic pollination

Author:
Maciel, Artur A.; Cardoso, João C. F.; Oliveira, Paulo E.
Source:
Plant species biology 2020 v.35 no.1 pp. 49-58
ISSN:
0913-557X
Subject:
pollinators,   etc   ; Orchidaceae; autogamy; bees; center of diversity; droplets; evaporation; females; fruit set; fruits; males; rain; reproductive success; selfing; stigma;     Show all 15 Subjects
Abstract:
... Rewardless orchid species are pollinated by deception and have reduced reproductive success. Those species that present self‐compatibility followed by alternative mechanisms of autogamy may compensate for such episodic allogamy events. This is the case for rain‐assisted self‐pollination, a rare mechanism in Orchidaceae. In this study, we investigated the reproductive biology of two terrestrial spe ...
DOI:
10.1111/1442-1984.12260

15. The novel butenolide pesticide flupyradifurone does not alter responsiveness to sucrose at either acute or chronic short‐term field‐realistic doses in the honey bee, Apis mellifera

Author:
Bell, Heather Christine; Benavides, Jaime Edilberto; Montgomery, Corina Noelle; Navratil, Jennifer Rose Evershed; Nieh, James Charles
Source:
Pest management science 2020 v.76 no.1 pp. 111-117
ISSN:
1526-498X
Subject:
pollinators,   etc   ; Apis mellifera; agonists; foraging; honey bees; lethal dose 50; mortality; nectar; neonicotinoid insecticides; nicotinic receptors; spring; sucrose; winter;     Show all 13 Subjects
Abstract:
... BACKGROUND: Sublethal exposure to neonicotinoids, a popular class of agricultural pesticides, can lead to behavioral effects that impact the health of pollinators. Therefore, new compounds, such as flupyradifurone (FPF), have recently been developed as ‘safer’ alternatives. FPF is an excitotoxic nicotinic acetylcholine receptor agonist, similar to neonicotinoids. Given the novelty of FPF, what dat ...
DOI:
10.1002/ps.5554

16. Modulation by neonicotinoids of honeybee α1/chicken β2 hybrid nicotinic acetylcholine receptors expressed in Xenopus laevis oocytes

Author:
Shigetou, Sho; Shimada, Shota; Makoto, Ihara; Matsuda, Kazuhiko
Source:
Pesticide biochemistry and physiology 2020 v.166 pp. 104545
ISSN:
0048-3575
Subject:
pollinators,   etc   ; Apis mellifera; Xenopus laevis; acetylcholine; adverse effects; agonists; chickens; clothianidin; electrophysiology; honey bees; hydrogen bonding; imidacloprid; nicotinic receptors; oocytes; plant protection; stoichiometry; thiacloprid;     Show all 17 Subjects
Abstract:
... Neonicotinoids targeting insect nicotinic acetylcholine (ACh) receptors (insect nAChRs) are used for crop protection, but there is a concern about adverse effects on pollinators such as honeybees (Apis mellifera). Thus, we investigated the agonist actions of neonicotinoids (imidacloprid, thiacloprid and clothianidin) on A. mellifera α1 (Amα1)/chicken β2 hybrid nAChRs in Xenopus laevis oocytes acco ...
DOI:
10.1016/j.pestbp.2020.02.011

17. Characterizing honey bee exposure and effects from pesticides for chemical prioritization and life cycle assessment

Author:
Crenna, Eleonora; Jolliet, Olivier; Collina, Elena; Sala, Serenella; Fantke, Peter
Source:
Environment international 2020 v.138 pp. 105642
ISSN:
0160-4120
Subject:
pollinators,   etc   ; Brassica napus; boscalid; dermal exposure; ecotoxicology; honey bees; lambda-cyhalothrin; life cycle impact assessment; models; nectar; oral exposure; pesticide application; prioritization; risk screening; screening;     Show all 15 Subjects
Abstract:
... Agricultural pesticides are key contributors to pollinator decline worldwide. However, methods for quantifying impacts associated with pollinator exposure to pesticides are currently missing in comparative risk screening, chemical substitution and prioritization, and life cycle impact assessment methods. To address this gap, we developed a method for quantifying pesticide field exposure and ecotox ...
DOI:
10.1016/j.envint.2020.105642

18. Seasonal abundance and diversity of native bees in a patchy agricultural landscape in Southern Mexico

Author:
Ruiz-Toledo, Jovani; Vandame, Rémy; Penilla-Navarro, Patricia; Gómez, Jaime; Sánchez, Daniel
Source:
Agriculture, ecosystems & environment 2020 v.292 pp. 106807
ISSN:
0167-8809
Subject:
pollinators,   etc   ; Glycine max; Trigona; agricultural land; bees; climatic factors; conservation areas; crops; forests; land use; nectar; pollen; small-scale farming; soybeans; urban areas; wet season; wild flowers; Mexico;     Show all 18 Subjects
Abstract:
... Diversity and abundance of native bees was measured in four sites of an agricultural landscape dominated by soybean crops in Southern Mexico. Bees were sampled from June 2014 to May 2015 using entomological nets along five 500 m long transects in each site. Two sites (S1 and S2) were fully anthropized (100% of urban and agricultural land use) and the two other sites (R1 and R2) were on average les ...
DOI:
10.1016/j.agee.2019.106807

19. Lethal and sublethal effects of toxicants on bumble bee populations: a modelling approach

Author:
Banks, J. E.; Banks, H. T.; Myers, N.; Laubmeier, A. N.; Bommarco, R.
Source:
Ecotoxicology 2020 v.29 no.3 pp. 237-245
ISSN:
0963-9292
Subject:
pollinators,   etc   ; Bombus; bees; community structure; differential equation; ecosystem services; foraging; larvae; mathematical models; mechanics; neonicotinoid insecticides; sublethal effects; toxic substances; Europe; North America;     Show all 15 Subjects
Abstract:
... Pollinator decline worldwide is well-documented; globally, chemical pesticides (especially the class of pesticides known as neonicotinoids) have been implicated in hymenopteran decline, but the mechanics and drivers of population trends and dynamics of wild bees is poorly understood. Declines and shifts in community composition of bumble bees (Bombus spp.) have been documented in North America and ...
DOI:
10.1007/s10646-020-02162-y
PubMed:
32060669
PubMed Central:
PMC7103009

20. Probabilistic assessment of nectar requirements for nectar-foraging honey bees

Author:
Rodney, Sara; Kramer, Vincent J.
Source:
Apidologie 2020 v.51 no.2 pp. 180-200
ISSN:
0044-8435
Subject:
pollinators,   etc   ; Apis mellifera; dietary exposure; flight; food storage; foraging; government agencies; honey bee colonies; honey bees; nectar; nutrient requirements; pesticides; probabilistic models; probability analysis; risk assessors;     Show all 15 Subjects
Abstract:
... Recent concerns regarding potential effects of pesticides on pollinators have prompted regulatory agencies to estimate dietary ingestion rates for honey bees (Apis mellifera). The task is difficult because of the complex caste and food storage systems in honey bee colonies. Considerable data on the nutrition and energetics of honey bees have recently been collated. These data were used to paramete ...
DOI:
10.1007/s13592-019-00693-w