Number of conspecifics and reproduction in the invasive plant Eschscholzia californica (Papaveraceae): Is there a pollinator-mediated Allee effect?

V. Anic, C. A. Henríquez, S. R. Abades, R. O. Bustamante

Resultado de la investigación: Article

7 Citas (Scopus)

Resumen

The component Allee effect has been defined as 'a positive relationship between any measure of individual fitness and the number or density of conspecifics'. Larger plant populations or large patches have shown a higher pollinator visitation rate, which may give rise to an Allee effect in reproduction of the plants. We experimentally tested the effect of number of conspecifics on reproduction and pollinator visitation in Eschscholzia californica Cham., an invasive plant in Chile. We then built patches with two, eight and 16 flowering individuals of E. californica (11 replicates per treatment) in an area characterised by dominance of the study species. We found that E. californica exhibits a component Allee effect, as the number of individuals of this species has a positive effect on individual seed set. However, individual fruit production was not affected by the number of plants examined. Pollinator visitation rate was also independent of the number of plants, so this factor would not explain the Allee effect. This rate was positively correlated with the total number of flowers in the patches. We also found that the number of plants did not affect the seed mass or proportion of germinated seeds in the patches. Higher pollen availability in patches with 16 plants and pollination by wind could explain the Allee effect. The component Allee effect identified could lead to a weak demographic Allee effect that might reduce the rate of spread of E. californica. Knowledge of this would be useful for management of this invasive plant in Chile.

Idioma originalEnglish
Páginas (desde-hasta)720-727
Número de páginas8
PublicaciónPlant Biology
Volumen17
N.º3
DOI
EstadoPublished - 1 may 2015

Huella dactilar

Eschscholzia
Papaveraceae
Eschscholzia californica
Allee effect
pollinator
pollinators
Reproduction
Seeds
Chile
seed
plant reproduction
fruit production
seed set
Pollination
seeds
pollination
flowering
Pollen
fruiting
flower

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Plant Science
  • Medicine(all)

Citar esto

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abstract = "The component Allee effect has been defined as 'a positive relationship between any measure of individual fitness and the number or density of conspecifics'. Larger plant populations or large patches have shown a higher pollinator visitation rate, which may give rise to an Allee effect in reproduction of the plants. We experimentally tested the effect of number of conspecifics on reproduction and pollinator visitation in Eschscholzia californica Cham., an invasive plant in Chile. We then built patches with two, eight and 16 flowering individuals of E. californica (11 replicates per treatment) in an area characterised by dominance of the study species. We found that E. californica exhibits a component Allee effect, as the number of individuals of this species has a positive effect on individual seed set. However, individual fruit production was not affected by the number of plants examined. Pollinator visitation rate was also independent of the number of plants, so this factor would not explain the Allee effect. This rate was positively correlated with the total number of flowers in the patches. We also found that the number of plants did not affect the seed mass or proportion of germinated seeds in the patches. Higher pollen availability in patches with 16 plants and pollination by wind could explain the Allee effect. The component Allee effect identified could lead to a weak demographic Allee effect that might reduce the rate of spread of E. californica. Knowledge of this would be useful for management of this invasive plant in Chile.",
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Number of conspecifics and reproduction in the invasive plant Eschscholzia californica (Papaveraceae) : Is there a pollinator-mediated Allee effect? / Anic, V.; Henríquez, C. A.; Abades, S. R.; Bustamante, R. O.

En: Plant Biology, Vol. 17, N.º 3, 01.05.2015, p. 720-727.

Resultado de la investigación: Article

TY - JOUR

T1 - Number of conspecifics and reproduction in the invasive plant Eschscholzia californica (Papaveraceae)

T2 - Is there a pollinator-mediated Allee effect?

AU - Anic, V.

AU - Henríquez, C. A.

AU - Abades, S. R.

AU - Bustamante, R. O.

PY - 2015/5/1

Y1 - 2015/5/1

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AB - The component Allee effect has been defined as 'a positive relationship between any measure of individual fitness and the number or density of conspecifics'. Larger plant populations or large patches have shown a higher pollinator visitation rate, which may give rise to an Allee effect in reproduction of the plants. We experimentally tested the effect of number of conspecifics on reproduction and pollinator visitation in Eschscholzia californica Cham., an invasive plant in Chile. We then built patches with two, eight and 16 flowering individuals of E. californica (11 replicates per treatment) in an area characterised by dominance of the study species. We found that E. californica exhibits a component Allee effect, as the number of individuals of this species has a positive effect on individual seed set. However, individual fruit production was not affected by the number of plants examined. Pollinator visitation rate was also independent of the number of plants, so this factor would not explain the Allee effect. This rate was positively correlated with the total number of flowers in the patches. We also found that the number of plants did not affect the seed mass or proportion of germinated seeds in the patches. Higher pollen availability in patches with 16 plants and pollination by wind could explain the Allee effect. The component Allee effect identified could lead to a weak demographic Allee effect that might reduce the rate of spread of E. californica. Knowledge of this would be useful for management of this invasive plant in Chile.

KW - Allee effect

KW - Fruit and seed set

KW - Invasive plant

KW - Number of plants

KW - Pollinator visitation

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JO - Acta Botanica Neerlandica

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