LONG‐TONGUED FLY POLLINATION AND EVOLUTION OF FLORAL SPUR LENGTH IN THE DISA DRACONIS COMPLEX (ORCHIDACEAE)
@article{Johnson1997LONGTONGUEDFP, title={LONG‐TONGUED FLY POLLINATION AND EVOLUTION OF FLORAL SPUR LENGTH IN THE DISA DRACONIS COMPLEX (ORCHIDACEAE)}, author={Steven D. Johnson and Kim E. Steiner}, journal={Evolution}, year={1997}, volume={51} }
Field studies in South Africa showed that floral spur length in the Disa draconis complex (Orchidaceae) varies enormously between populations in the southern mountains (means = 32–38 mm), lowland sandplain (mean = 48 mm), and northern mountains (means = 57–72 mm). We tested the hypothesis that divergence in spur length has resulted from selection exerted through pollinator proboscis length. Short‐spurred plants in several southern mountain populations, as well as long‐spurred plants in one…
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References
SHOWING 1-10 OF 42 REFERENCES
EVIDENCE FOR POLLINATION ECOTYPES IN THE YELLOW‐FRINGED ORCHID, PLATANTHERA CILIARIS
- Environmental ScienceEvolution; international journal of organic evolution
- 1990
Detailed observations of two populations within these disjunct areas revealed that the butterfly species that serve as the primary pollinators differ sharply, and levels of pollinator service were higher in the mountains than in the coastal plain.
MEASURING POLLINATOR‐MEDIATED SELECTION ON MORPHOMETRIC FLORAL TRAITS: BUMBLEBEES AND THE ALPINE SKY PILOT, POLEMONIUM VISCOSUM
- Environmental ScienceEvolution; international journal of organic evolution
- 1989
The hypothesis that pollinator‐mediated selection can bring about changes in floral form, and can explain shifts in floral morphology of P. viscosum along natural habitat gradients, is supported.
SELECTION ON FLORAL MORPHOLOGY AND ENVIRONMENTAL DETERMINANTS OF FECUNDITY IN A HAWK MOTH-POLLINATED VIOLET'
- Biology
- 1993
Phenotypic selection on the floral morphology of V. cazorlensis at the study population, although statistically significant, was therefore almost inconsequential as a source of individual variation in maternal fitness, its effects being heavily "dilute" by the overwhelming influence of other factors.
Monophily and pollination mechanisms in Angraecum arachnites Schltr. (Orchidaceae) in a guild of long-tongued hawk-moths (Sphingidae) in Madagascar
- Environmental Science
- 1985
Anthecological relations between a long-spurred angraecoid orchid and pollinating Sphingidae are documented for the first time and the monophily in A. arachnites is interpreted as a result of a refined long-term specialization developed within an archaic evolutionary relationship in a relatively stable environment.
POLLINATION BIOLOGY OF NIVENIA (IRIDACEAE) AND THE PRESENCE OF HETEROSTYLOUS SELF-COMPATIBILITY
- Environmental Science
- 1990
Hand pollinations of natural populations of seven Nivenia species have confirmed previous reports of self-compatibility, and four out of five distylous species have pollen size but not exine dimorphism.
Long pollinia on eyes: hawk‐moth pollination of Cynorkis uniflora Lindley (Orchidaceae) in Madagascar
- Environmental Science
- 1992
The ratio between components of floral female and male functions within the orchid population suggested that the much elongated operative male floral parts result from strong and progressively extreme sex-specific selection for acquiring mates via hawk-moths.
POLLINATOR ADAPTATION TO OIL‐SECRETING FLOWERS—REDIVIVA AND DIASCIA
- Biology, MedicineEvolution; international journal of organic evolution
- 1990
MEASUREMENTS OF SELECTION IN A HERMAPHRODITIC PLANT: VARIATION IN MALE AND FEMALE POLLINATION SUCCESS
- Biology, MedicineEvolution; international journal of organic evolution
- 1989
A phenotypic selection analysis revealed that selection due to male‐male competition during pollination was capable of delaying flowering date and widening corolla tubes by 0.22 and 0.24 standard‐deviation units, respectively, in a single generation.
COMPONENTS OF PHENOTYPIC SELECTION: POLLEN EXPORT AND FLOWER COROLLA WIDTH IN IPOMOPSIS AGGREGATA
- Biology, MedicineEvolution; international journal of organic evolution
- 1991
In the hummingbird‐pollinated herb Ipomopsis aggregata, selection through male function during pollination favors wide corolla tubes, and the phenotypic selection differential was 80% higher for the effect on pollen exported per visit, suggesting that this is the more important mechanism of selection.
RED BOWL-SHAPED FLOWERS: CONVERGENCE FOR BEETLE POLLINATION IN THE MEDITERRANEAN REGION
- Biology
- 1990
The floral phenology of these “Poppy guild” species correlated positively with the amount of edible pollen produced by each of them and with the visiting frequencies of their pollinators, suggesting that there is a convergent evolution of red bowl-shaped flowers in the East Mediterranean region.