Dynamics of plant–pollinator–robber systems

Wang, Yuanshi

doi:10.1007/s00285-012-0527-8

Cited by 18 publications

(17 citation statements)

References 26 publications

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“…Thus, the robber plays a constructive and crucial role in the reproductive performance of this threatened tree species. It has been suggested that a plant may continue to sustain robbing provided that its pollinators do not become a limiting factor [48]. In T. undulata , there are two pollinators at the site with nearly equal performance and the robbers indirectly facilitate cross-pollination by strongly integrating into the pollination system.…”

Section: Discussionmentioning

confidence: 99%

Nectar Robbing Positively Influences the Reproductive Success of Tecomella undulata (Bignoniaceae)

2014

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The net consequence of nectar robbing on reproductive success of plants is usually negative and the positive effect is rarely produced. We evaluated the influence of nectar robbing on the behaviour of pollinators and the reproductive success of Tecomella undulata (Bignoniaceae) in a natural population. Experimental pollinations showed that the trees were strictly self-incompatible. The three types of floral colour morphs of the tree viz. red, orange and yellow, lacked compatibility barriers. The pollinators (Pycnonotus cafer and Pycnonotus leucotis) and the robber (Nectarinia asiatica) showed equal preference for all the morphs, as they visited each morph with nearly equal frequency and flower-handling time. The sunbirds caused up to 60% nectar robbing, mostly (99%) by piercing through the corolla tube. Although nectar is replenished at regular intervals, insufficient amount of nectar compelled the pollinators to visit additional trees in bloom. Data of manual nectar robbing from the entire tree showed that the pollinators covered lower number of flowers per tree (5 flowers/tree) and more trees per bout (7 trees/bout) than the unrobbed ones (19 flowers/tree and 2 trees bout). The robbed trees set a significantly greater amount of fruits than the unrobbed trees. However, the number of seeds in a fruit did not differ significantly. The study shows that plant-pollinator-robber interaction may benefit the self-incompatible plant species under conditions that increases the visits of pollinators among the compatible conspecifics in a population.

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Section: Discussionmentioning

confidence: 99%

Nectar Robbing Positively Influences the Reproductive Success of Tecomella undulata (Bignoniaceae)

2014

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“…This is similar to the observation in our other work [18] that oscillations occur in age-structured resource-consumer (plant-pollinator) models. Wang et al [29] and Wang [26] indeed investigated three species plant-pollinator-robber models. Since the movement of the nectar robbers plays an important role in their invasibility and coexistence of all species, it will be very interesting to study the population dynamics of the three species diffusive plant-pollinator-robber models.…”

Section: Discussionmentioning

confidence: 99%

“…Various mathematical models have been proposed to study plant-pollinator population dynamics, see Soberon and Del Rio [24], Lundberg and Ingvarsson [19], Jang [14], Neuhauser and Fargione [20], Fishman and Hadany [8], Wang et al [29], and Wang [26].…”

Section: Discussionmentioning

confidence: 99%

“…The interactions between flowering plants and their insect pollinators remain an important ecological relationship crucial to the maintenance of both natural and agricultural ecosystems [15]. Mathematical modeling plays a useful role in pollination research and various mathematical models have been proposed to study plant-pollinator population dynamics, see Soberon and Del Rio [24], Lundberg and Ingvarsson [19], Jang [14], Neuhauser and Fargione [20], Fishman and Hadany [8], Wang et al [29], Wang [26], and the references cited therein.…”

Section: Introductionmentioning

confidence: 99%

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Bifurcation and temporal periodic patterns in a plant–pollinator model with diffusion and time delay effects

Huang

Liu

Ruan

2016

Journal of Biological Dynamics

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This paper deals with a plant-pollinator model with diffusion and time delay effects. By considering the distribution of eigenvalues of the corresponding linearized equation, we first study stability of the positive constant steady-state and existence of spatially homogeneous and spatially inhomogeneous periodic solutions are investigated. We then derive an explicit formula for determining the direction and stability of the Hopf bifurcation by applying the normal form theory and the centre manifold reduction for partial functional differential equations. Finally, we present an example and numerical simulations to illustrate the obtained theoretical results. ARTICLE HISTORY

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“…Situations that allow the persistence of plant-robber-pollinator interactions have been explored by theoretical models (Wang et al, 2012;Wang, 2013). For example, pollinators and robbers may persist when they have similar levels of fitness or when they show periodic dynamics of plant-robber frequencies (Wang et al, 2012;Wang, 2013). However, more research is still required to understand the conditions under which pollination systems persist despite the high frequencies of nectar robbing that have been recorded in certain plant species (Rojas-Nossa et al, 2016).…”

Section: Pollinator Visitation Rate Is Not Affected By Nectar Robbingmentioning

confidence: 99%

Variation in composition of two bumble bee species across communities affects nectar robbing but maintains pollinator visitation rate to an alpine plant, Salvia przewalskii

Jin

Inouye

et al. 2018

Ecological Entomology

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1. In many flowering plants, bumble bees may forage as both pollinators and nectar robbers. This mixed foraging behaviour may be influenced by community context and consequently, potentially affect pollination of the focal plant.2. Salvia przewalskii is both pollinated and robbed exclusively by bumble bees. In the present study area, it was legitimately visited by two species of bumble bees with different tongue length, Bombus friseanus and Bombus religiosus, but it was only robbed by Bombus friseanus, the shorter-tongued bumble bee. The intensity of nectar robbing and pollinator visitation rate to the plant were investigated across 26 communities in the Hengduan Mountains in East Himalaya during a 2-year project. For each of these communities, the floral diversity, and the population size and floral resource of S. przewalskii were quantified. The abundances of the two bumble bee species were also recorded.3. Both nectar robbing and pollinator visitation rate were influenced by floral diversity. However, pollinator visitation rate was not affected by nectar robbing. The results revealed that relative abundance of the two bumble bee species significantly influenced the incidence of nectar robbing but not the pollinator visitation rate. Increased abundance of B. religiosus, the legitimate visitors, exacerbated nectar robbing, possibly by causing B. friseanus to shift to robbing; however, pollinator visitation remained at a relatively high level.4. The results may help to explain the persistence of both nectar robbing and pollination, and suggest that, in comparison to pollination, nectar robbing is a more unstable event in a community.

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Dynamics of plant–pollinator–robber systems

Cited by 18 publications

References 26 publications

Nectar Robbing Positively Influences the Reproductive Success of Tecomella undulata (Bignoniaceae)

Nectar Robbing Positively Influences the Reproductive Success of Tecomella undulata (Bignoniaceae)

Bifurcation and temporal periodic patterns in a plant–pollinator model with diffusion and time delay effects

Variation in composition of two bumble bee species across communities affects nectar robbing but maintains pollinator visitation rate to an alpine plant, Salvia przewalskii

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