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1. Past experience with spatial or temporal resource unpredictability shapes exploration in honey bees, Apis mellifera

Author:
Allison M. Young; Fred C. Dyer
Source:
Animal behaviour 2022 pp. -
ISSN:
0003-3472
Subject:
nectar secretion,   etc   ; Apis mellifera; animal behavior; animals; bees; honey;     Show all 6 Subjects
Abstract:
... Foraging animals must repeatedly decide whether to exploit current resources or explore to gain information and locate new resources. Balancing these two often mutually exclusive options is made more difficult by environmental changes that can occur predictably, as seen in daily patterns of nectar secretion in flowers, or unpredictably, as seen when resources are depleted by competitors. Recent ex ...
DOI:
10.1016/j.anbehav.2022.09.001

2. Eco-evolutionary dynamics further weakens mutualistic interaction and coexistence under population decline

Author:
Avril Weinbach; Nicolas Loeuille; Rudolf P. Rohr
Source:
Evolutionary ecology 2022 v.36 no.3 pp. 373-387
ISSN:
0269-7653
Subject:
nectar secretion,   etc   ; biomass production; carbon; extinction; flowers; mutualism; population dynamics;     Show all 7 Subjects
Abstract:
... With current environmental changes, evolution can rescue declining populations, but what happens to their interacting species? Mutualistic interactions can help species sustain each other when their environment worsens. However, mutualism is often costly to maintain, and evolution might counter-select it when not profitable enough. We investigate how the evolution of the investment in a mutualisti ...
DOI:
10.1007/s10682-022-10176-7

3. Extrafloral nectar secretion does not mediate ant predatory activity on Pityrocarpa moniliformis plants in a seasonally dry forest

Author:
Caroline Souza; Fernanda M.P. Oliveira; Elâine M.S. Ribeiro; Carlos H.F. Silva; José I.F. Durval; Inara R. Leal
Source:
Acta oecologica 2022 v.114 pp. 103806
ISSN:
1146-609X
Subject:
nectar secretion,   etc   ; Pityrocarpa moniliformis; caatinga; dry forests; legumes; models; nectar; trees; tropical forests; Brazil;     Show all 10 Subjects
Abstract:
... Plants bearing extrafloral nectaries (EFNs) and their attendant ants are part of a mutualistic, facultative and generalized interaction. The final balance of this interaction can vary greatly over time and space, making the outcome context-dependent. In this study, we investigated how nectar volume and concentration mediate ant attraction and ant predatory activity on a legume species, as well as ...
DOI:
10.1016/j.actao.2021.103806

4. Unraveling the mystery of non extraction of honey from modern sunflower hybrids

Author:
Rinku Poonia; O. P. Chaudhary
Source:
Journal of apicultural research 2022 v.61 no.4 pp. 557-566
ISSN:
2078-6913
Subject:
nectar secretion,   etc   ; Helianthus annuus; apiculture; florets; honey; honey bees; hybrids; nectar; pollen; research; India;     Show all 11 Subjects
Abstract:
... Sunflower (Helianthus annuus L.) has largely failed as a source of extractable honey from present day cultivated hybrids in India since 1999. So, the amount and rhythms of nectar secretion measured as dry nectar sugars (DNS) of 6 hybrids and 2 old populations were evaluated. Three day old florets (DOF) produced maximum DNS (0.891 mg/floret) at 1000 h and in the outermost ring of the capitulum (0.9 ...
DOI:
10.1080/00218839.2020.1753325

5. Intra‐seasonal and daily variations in nectar availability affect bee assemblage in a monodominant afforested Brazilian Cerrado

Author:
Caio S. Ballarin; Leandro Hachuy‐Filho; Maria Júlia W. Doria; Murilo M. Giffu; Diego S. Polizello; Pablo H. Oliveira; Pedro A. Lacerda‐Barbosa; Felipe W. Amorim
Source:
Austral ecology 2022 v.47 no.6 pp. 1315-1328
ISSN:
1442-9985
Subject:
nectar secretion,   etc   ; Apis mellifera; Inga vera; cerrado; honey bees; nectar; phenology; pollinators; species richness; temporal variation; trees;     Show all 11 Subjects
Abstract:
... Nectar is the most common floral resource that mediates plant–pollinator interactions, and its spatiotemporal distribution is related to pollinator attraction and can influence pollinator activity through time. Therefore, assessing patterns of floral phenology of nectar‐producing plants can help better understand the pollinator assemblage's temporal dynamics. We used an area of afforested Brazilia ...
DOI:
10.1111/aec.13218

6. Nectar Secretion, Morphology, Anatomy and Ultrastructure of Floral Nectary in Selected Rubus idaeus L. Varieties

Author:
Mikołaj Kostryco; Mirosława Chwil
Source:
Agriculture (Basel) 2022 v.12 no.7 pp. -
ISSN:
2077-0472
Subject:
nectar secretion,   etc   ; Golgi apparatus; Rubus idaeus; agriculture; biochemical pathways; cultivars; endoplasmic reticulum; fluorescence; microstructure; mitochondria; nectaries; phylogeny; ultrastructure;     Show all 13 Subjects
Abstract:
... The distinctive features of floral nectaries facilitate identification of ecological and phylogenetic links between related taxa. The structure and functioning of nectaries determine the relationships between plants, pollinators, and the environment. The aim of the study was to determine and compare the micromorphology of the epidermis in the floral nectaries of six Rubus idaeus cultivars belongin ...
DOI:
10.3390/agriculture12071017

7. A nectar oasis for urban Glossophaginae bats: Temporal resource dynamics of the chiropterophilous Crescentia cujete (Bignoniaceae)

Author:
Sinzinando Albuquerque-Lima; Ugo M. Diniz; Isabel C.S. Machado
Source:
Urban forestry & urban greening 2022 v.67 pp. 127412
ISSN:
1618-8667
Subject:
nectar secretion,   etc   ; Crescentia cujete; Glossophaga; flowers; food shortages; nectar; nectar feeding; oases; pollinators; urban areas; urban forestry; Brazil;     Show all 12 Subjects
Abstract:
... Pollinator-friendly plants are often a necessary component of the management of urban ecosystem that aim to reduce the impact of the artificial urban matrix on natural pollinator populations. Nectarivorous bats are neglected components of the urban pollinator community and there is a paucity of assessments on pollinator-friendly plants that may provide urban bats with reliable, year-long resources ...
DOI:
10.1016/j.ufug.2021.127412

8. Secretion and use of nectar across floral longevity of the protandrous Tropaeolum pentaphyllum Lam. (Tropaeolaceae)

Author:
Juliana Marcia Rogalski; Júlio Tagliari Balestrin; Daniela da Silva; Jéssica Argenta
Source:
Folia geobotanica 2022 v.57 no.2 pp. 139-150
ISSN:
1211-9520
Subject:
nectar secretion,   etc   ; Tropaeolum; cross pollination; food availability; forests; geophytes; longevity; medicinal plants; nectar; protandry; secretion; selfing; sugars; vines; Brazil;     Show all 15 Subjects
Abstract:
... The herbaceous vine Tropaeolum pentaphyllum Lam. is a geophyte. The species presents potential use as an ornamental, food and medicinal plant. In this study, we aim to understand the reproductive biology of T. pentaphyllum in Brazilian Mixed Ombrophilous Forest, Southern Brazil. Floral structures, duration of the staminate and pistillate phases, interval between phases, overlapping of phases, bree ...
DOI:
10.1007/s12224-022-09416-z

9. Floral visitors of the holoparasite Bdallophytum andrieuxii Eichler: A new report of brood-site pollination and thermogenesis for Cytinaceae (Malvales)

Author:
Sandra Rios-Carrasco; César A. González-Martínez; Sonia Vázquez-Santana
Source:
Revista brasileira de botânica 2022 v.45 no.3 pp. 1047-1055
ISSN:
1806-9959
Subject:
nectar secretion,   etc   ; Cytinaceae; Lepidoptera; air temperature; butterflies; color; dead animals; dioecy; females; flowers; fruits; heat production; males; nectar; oviposition; pollination; saprotrophs; seed development; smell;     Show all 19 Subjects
Abstract:
... Bdallophytum andrieuxii is an endemic dioecious holoparasitic species belonging to Cytinaceae. Given the background of specialized pollination for the family and the genus, we explored the floral visitors of B. andrieuxii, describing the flower ecology of this saprophilous species. We found that flowers display thermogenesis, as their temperature was above the air temperature. Flowers produce nect ...
DOI:
10.1007/s40415-022-00816-1

10. Morphological, anatomical, ultrastructural, and histochemical study of flowers and nectaries of Iris sibirica L.

Author:
Agata Konarska
Source:
Micron 2022 v.158 pp. 103288
ISSN:
0968-4328
Subject:
nectar secretion,   etc   ; Iris sibirica; attractants; endangered species; females; fruits; longevity; males; microstructure; nectar; nectaries; odors; oils; perianth; pollen; pollinators; polyphenols; polysaccharides; reproductive success; secretion; ultrastructure;     Show all 21 Subjects
Abstract:
... The insufficient pollinator visitation is the most important limitation of fruit and seed production, which is common and ubiquitous in entomophilous angiosperms. The scent and attractive colours with flower guides and such floral rewards as nectar, pollen, and oil are important attractants for insects visiting and pollinating flowers in the family Iridaceae. The aim of this study was to investiga ...
DOI:
10.1016/j.micron.2022.103288

11. Nectar dynamics and the coexistence of two plants that share a pollinator

Author:
Mark A. McPeek; Sarah J. McPeek; Judith L. Bronstein
Source:
Oikos 2022 v.2022 no.4 pp. e08869
ISSN:
0030-1299
Subject:
nectar secretion,   etc   ; mechanistic models; mutualism; nectar; pollen; pollinators; predation;     Show all 7 Subjects
Abstract:
... Many different analyses have shown how antagonistic interactions (e.g. predation, disease, interference competition) can foster the coexistence of two species that compete for a single resource. In contrast, whether interactions with mutualist partners can similarly foster coexistence between resource competitors has been little considered. Here, we derive a mechanistic model of two plant species ...
DOI:
10.1111/oik.08869

12. Temporal partitioning of diurnal bird and nocturnal small mammal visitors to a winter flowering endemic succulent

Author:
Stephanie L Payne; Craig T Symes; Ed TF Witkowski
Source:
African zoology 2021 v.56 no.2 pp. 146-156
ISSN:
2224-073X
Subject:
nectar secretion,   etc   ; Aloe; birds; cold; nectar; pollination; small mammals; winter; zoology;     Show all 9 Subjects
Abstract:
... Floral nectar is an important attractant and reward for visitors, and is often produced in synchrony with peak activity of pollinators. Aloe peglerae flowers in winter, and previous studies have shown that it is pollinated primarily by diurnal generalist birds, with small mammals making additional contributions to pollination at night. Nectar produced during the day is the main attractant and rewa ...
DOI:
10.1080/15627020.2021.1933591

13. From Functional Characterization to the Application of SWEET Sugar Transporters in Plant Resistance Breeding

Author:
Tingshan Yao; Xiao Tong Gai; Zhong Ji Pu; Yue Gao; Yuan Hu Xuan
Source:
Journal of agricultural and food chemistry 2022 v.70 no.17 pp. 5273-5283
ISSN:
1520-5118
Subject:
nectar secretion,   etc   ; coevolution; disease resistance; food chemistry; immune response; pathogens; sugars;     Show all 7 Subjects
Abstract:
... The occurrence of plant diseases severely affects the quality and quantity of plant production. Plants adapt to the constant invasion of pathogens and gradually form a series of defense mechanisms, such as pathogen-associated molecular pattern-triggered immunity and microbial effector-triggered immunity. Moreover, many pathogens have evolved to inhibit the immune defense system and acquire plant n ...
DOI:
10.1021/acs.jafc.2c00582

14. Optimal Defense Theory in an ant–plant mutualism: Extrafloral nectar as an induced defence is maximized in the most valuable plant structures

Author:
Eduardo Soares Calixto; Denise Lange; Judith Bronstein; Helena Maura Torezan‐Silingardi; Kleber Del‐Claro
Source:
journal of ecology 2021 v.109 no.1 pp. 167-178
ISSN:
0022-0477
Subject:
nectar secretion,   etc   ; Qualea; energy content; herbivores; leaves; mutualism; nectar; nectaries; prediction; risk;     Show all 10 Subjects
Abstract:
... Plants allocate defences in order to decrease costs and maximize benefits against herbivores. The Optimal Defense Theory (ODT) predicts that continuously expressed (i.e. constitutive) defences are expected in structures of high value, whereas defences that are expressed or that increase their expression only after damage or upon risk of damage (i.e. induced defences) are expected in structures of ...
DOI:
10.1111/1365-2745.13457

15. The role of leaf cutting and fire on extrafloral nectaries and nectar production in Stryphnodendron adstringens (Fabaceae, Mimosoideae) plants

Author:
Marina Neves Delgado; Helena Castanheira de Morais; Davi Rodrigo Rossatto
Source:
Plant species biology 2022 v.37 no.4 pp. 268-277
ISSN:
0913-557X
Subject:
nectar secretion,   etc   ; Stryphnodendron adstringens; canopy; cerrado; herbivores; leaves; nectar; nectaries; phenotypic plasticity; trees;     Show all 10 Subjects
Abstract:
... Herbivory pressure is an important ecological aspect to determine quantitative variation in plant defenses, such as the number of extrafloral nectaries (EFNs) and their nectar amount and quality. Extrafloral nectaries can attract ants, which can be considered a type of induced plant defense. Besides, plants tend to invest more in defense when they are more vulnerable to herbivores. Therefore, we a ...
DOI:
10.1111/1442-1984.12373

16. The role of functional diversity and facilitation in small‐scale pollinator habitat

Author:
Kerissa Fuccillo Battle; Catherine E. de Rivera; Mitchell B. Cruzan
Source:
Ecological applications 2021 v.31 no.6 pp. e02355
ISSN:
1051-0761
Subject:
nectar secretion,   etc   ; functional diversity; habitat conservation; habitats; nectar; pollination; seed set; species diversity;     Show all 8 Subjects
Abstract:
... People in urban and rural areas are planting habitat patches for pollinators in response to growing public awareness of the risks of pollinator declines; yet research rarely has been undertaken to inform the composition of such patches. Determining which key functional plant traits to prioritize and how plant–pollinator interaction dynamics operate in these small‐scale, fragmented patches is criti ...
DOI:
10.1002/eap.2355

17. Divergent strategies of nectar secretion in two bat-pollinated Passiflora species

Author:
Rubem S. Avila Jr; Diego Ismael Rocha; Carlos E.P. Nunes; Leonardo Galetto; Marcelo Carnier Dornelas; Marlies Sazima
Source:
Flora 2022 v.293 pp. 152114
ISSN:
0367-2530
Subject:
nectar secretion,   etc   ; Chiroptera; Passiflora; flora; flowering; flowers; nectar; pollen; pollinators; resorption; secretion; sugars;     Show all 12 Subjects
Abstract:
... The secretion dynamics and chemical compositions of flower nectar can vary according to the plant physiology and the pollinator type. Bat-pollinated flowers are commonly associated with nocturnal nectar secretion as well as large amounts of nectar per flower, which is generally diluted and composed mostly of hexose sugars. The nectar traits in bat-pollinated Passiflora species are poorly understoo ...
DOI:
10.1016/j.flora.2022.152114

18. Bird pollination syndrome is the plant's adaptation to ornithophily, but nectarivorous birds are not so selective

Author:
Kryštof Chmel; Francis Luma Ewome; Guillermo Uceda Gómez; Yannick Klomberg; Jan E. J. Mertens; Robert Tropek; Štěpán Janeček
Source:
Oikos 2021 v.130 no.8 pp. 1411-1424
ISSN:
0030-1299
Subject:
nectar secretion,   etc   ; bird pollination; birds; data collection; diet; floral characteristics; nectar; nectar feeding; Cameroon;     Show all 9 Subjects
Abstract:
... Many tropical plants are pollinated by birds and several bird phylogenetical lineages have specialised to a nectar diet. The long‐assumed, intimate ecological and evolutionary relationship between ornithophilous plants and phenotypically specialised nectarivorous birds has nevertheless been questioned in recent decades, where such plant–pollinator interactions have been shown to be highly generali ...
DOI:
10.1111/oik.08052

19. Pollination dynamics and bee foraging cycles in a tropical squash field

Author:
Jorge Arturo Lobo
Source:
Arthropod-plant interactions 2021 v.15 no.5 pp. 797-807
ISSN:
1872-8855
Subject:
nectar secretion,   etc   ; Cucurbita pepo; corolla; flight; flowering; males; nectar; pollen; pollination; squashes; Costa Rica;     Show all 11 Subjects
Abstract:
... Temporal changes in the composition and abundance of floral visitors during floral anthesis influence the rate of deposition and germination of pollen in stigmas, as well as the rate of removal of pollen from anthers. In the tropics, the squash (Cucurbita pepo) is visited by a great diversity of bees, but little is known regarding the dynamics of its pollinators and pollination during its floral a ...
DOI:
10.1007/s11829-021-09850-4

20. Quantifying nectar production by flowering plants in urban and rural landscapes

Author:
Nicholas E. Tew; Jane Memmott; Ian P. Vaughan; Stephanie Bird; Graham N. Stone; Simon G. Potts; Katherine C. R. Baldock
Source:
journal of ecology 2021 v.109 no.4 pp. 1747-1757
ISSN:
0022-0477
Subject:
nectar secretion,   etc   ; agricultural land; ecology; food availability; land use change; landscapes; nectar; pollen; sugars;     Show all 9 Subjects
Abstract:
... Floral resources (nectar and pollen) provide food for insect pollinators but have declined in the countryside due to land use change. Given widespread pollinator loss, it is important that we quantify their food supply to help develop conservation actions. While nectar resources have been measured in rural landscapes, equivalent data are lacking for urban areas, an important knowledge gap as towns ...
DOI:
10.1111/1365-2745.13598