Pollination biology ofSymphonia globulifera (Clusiaceae)

Bittrich, Volker; Amaral, Maria C. E.

doi:10.1007/bf00984751

Cited by 46 publications

(47 citation statements)

References 9 publications

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“…globulifera has showy red flowers and is pollinated by butterflies, hummingbirds and perching birds in the Neotropics (Bittrich and Amaral, 1996) and by various insects and sun birds in Africa (Oyen, 2005). Seeds are dispersed by bats, tapirs, rodents, primates and deer in the Neotropics and by hornbills, primates and duikers in Africa (Forget et al, 2007).…”

Section: Study Speciesmentioning

confidence: 99%

The ancient tropical rainforest tree Symphonia globulifera L. f. (Clusiaceae) was not restricted to postulated Pleistocene refugia in Atlantic Equatorial Africa

et al. 2013

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Section: Study Speciesmentioning

confidence: 99%

The ancient tropical rainforest tree Symphonia globulifera L. f. (Clusiaceae) was not restricted to postulated Pleistocene refugia in Atlantic Equatorial Africa

et al. 2013

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“…Nectar robbing by insects and passerines occurs commonly on flowers adapted for hummingbird pollination (Barrows 1976;McDade and Kinsman 1980;Willmer and Corbet 1981;Inouye 1983;Arizmendi et al 1996;Bittrich and Amaral 1996;Brody 1998, 1999;Navarro 1999;Maloof and Inouye 2000). In particular, long-tubed hummingbird flowers are exploited regularly by various robbers that significantly reduce the floral nectar available to pollinators (e.g., McDade and Kinsman 1980;Snow 1981;Pleasants 1983;Arizmendi et al 1996;Irwin and Brody 1998;Traveset et al 1998;Navarro 1999;Lara and Ornelas 2001).…”

Section: Introductionmentioning

confidence: 98%

Preferential nectar robbing of flowers with long corollas: experimental studies of two hummingbird species visiting three plant species

Lara

Ornelas

2001

Oecologia

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Long flower tubes have been traditionally viewed as the result of coevolution between plants and specialized, legitimate, long billed-pollinators. However, nectar robbers may have played a role in selection acting on corolla length. This study evaluated whether hummingbirds are more likely to rob flowers with longer corollas from which they cannot efficiently extract nectar with legitimate visits. We compared two hummingbird species with similar bill lengths (Lampornis amethystinus and Colibri thalassinus) visiting floral arrays of artificial flowers with exaggerated corolla lengths, and also evaluated how the birds extract nectar rewards from medium to long corollas of three hummingbird-pollinated plants (Salvia mexicana, S. iodantha and Ipomoea hederifolia). The consequences of foraging for plant fitness were evaluated in terms of seed production per flower. Variation in seed production after legitimate visits of hummingbird-pollinated plants was mostly explained by differences in pollinator effectiveness. Seed production did not increase with the number of legitimate visits to a flower, except in I. hederifolia. We found that birds were more likely to rob both artificial and natural flowers with long corolla tubes. Nectar robbing was not observed on short-corolla flowers of Salvia spp., but robbing negatively affected seed production of long-tubed flowers of I. hederifolia. Significant differences between hummingbird species in the use of this behavior were observed, but males and females behaved alike. We suggest that short-billed hummingbirds with enlarged bill serrations (the edge of both tomia finely toothed) may have an advantage in illegitimately feeding at long-corolla flowers. This raises the possibility of counter-selection on increasing corolla length by nectar robbers.

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“…There are also contrasting reports on the community of pollinators of S. globulifera at different places. In Costa Rica, Pascarella (1992) observed Lepidoptera as the most important pollinators, in central French Guiana Gill et al (1998) identified perching birds as the principal pollinators, whereas Bittrich and Amaral (1996) and Maues (2001) suggested hummingbirds as the pollinators in the Central Amazon. Another advantage of selecting S. globulifera as a study subject is the availability of microsatellite markers and additional population genetic data for comparison .…”

Section: Introductionmentioning

confidence: 99%

Limited pollen dispersal and biparental inbreeding in Symphonia globulifera in French Guiana

Деген

Bandou²,

Caron

2004

Heredity

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In this paper, we report a study of the mating system and gene flow of Symphonia globulifera, a hermaphroditic, mainly birdpollinated tree species with a large geographic distribution in the tropical Americas and Africa. Using three microsatellites, we analysed 534 seeds of 28 open pollinated families and 164 adults at the experimental site 'Paracou' in French Guiana. We observed, compared to other tropical tree species, relatively high values for the effective number of alleles. Significant spatial genetic structure was detected, with trees at distances up to 150 m more genetically similar than expected at random. We estimated parameters of the mating system and gene flow by using the mixed mating model and the TwoGener approach. The estimated multilocus outcrossing rate, t m , was 0.920. A significant level of biparental inbreeding and a high proportion of full-sibs were estimated for the 28 seed arrays. We estimated mean pollen dispersal distances between 27 and 53 m according to the dispersal models used. Although the adult population density of S. globulifera in Paracou was relatively high, the joint estimation of pollen dispersal and density of reproductive trees gave effective density estimates of 1.6 and 1.3 trees/ha. The parameters of the mating system and gene flow are discussed in the context of spatial genetic and demographic structures, flowering phenology and pollinator composition and behaviour.

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Pollination biology ofSymphonia globulifera (Clusiaceae)

Cited by 46 publications

References 9 publications

The ancient tropical rainforest tree Symphonia globulifera L. f. (Clusiaceae) was not restricted to postulated Pleistocene refugia in Atlantic Equatorial Africa

The ancient tropical rainforest tree Symphonia globulifera L. f. (Clusiaceae) was not restricted to postulated Pleistocene refugia in Atlantic Equatorial Africa

Preferential nectar robbing of flowers with long corollas: experimental studies of two hummingbird species visiting three plant species

Limited pollen dispersal and biparental inbreeding in Symphonia globulifera in French Guiana

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