Effect of individual height and labellum colour on the pollination of Caladenia (syn. Arachnorchis) behrii (Orchidaceae) in the northern Adelaide region, South Australia
| العنوان: | Effect of individual height and labellum colour on the pollination of Caladenia (syn. Arachnorchis) behrii (Orchidaceae) in the northern Adelaide region, South Australia |
|---|---|
| المؤلفون: | Catherine R. Dickson, Sophie Petit |
| المساهمون: | Dickson,Catherine Ruth, Petit, Sophie |
| المصدر: | Plant Systematics and Evolution. 262:65-74 |
| بيانات النشر: | Springer Science and Business Media LLC, 2006. |
| سنة النشر: | 2006 |
| مصطلحات موضوعية: | Pollinium, Orchidaceae, food.ingredient, Pollination, sexually deceptive pollination, Endangered species, flower colour polymorphism, Zoology, Plant Science, Biology, biology.organism_classification, Caladenia, Caladenia behrii, food, flower height, Pollinator, Botany, pollinator behaviour, thynnine wasp, pollination success, labellum colour, Ecology, Evolution, Behavior and Systematics, Labellum |
| الوصف: | Caladenia behrii, a sexually deceptive orchid, is an endangered terrestrial orchid endemic to the Adelaide Hills, South Australia. We examined pollination success among individuals of different colours and heights in three populations of C. behrii in the northern Adelaide region. The labellum of C. behrii varies from cream to deep maroon. Over five years, the pollination success (pollinia deposited on stigma) of four colour groups (maroon, maroon and cream, hatched, and cream) was assessed for a total of 782 flowers. Labellum colour had no effect on the pollination success of individuals, indicating no frequency-dependent selection. It is likely that pollinators use the sexual pheromone mimic produced by the flowers as the main orientation cue. For three years the height of pollinated C. behrii individuals was recorded, along with the height of the nearest non-pollinated neighbour (distance of labellum from the ground, rather than stem length). Although a range of different heights was pollinated at population level, individual flowers that were taller than their closest neighbours were significantly more likely to be pollinated. Flower head height was not correlated with opening date and was greater for orchids growing among grass-tree leaves. Results imply that pollinators are more successful in finding tall flowers than short ones for visual and/or olfactory reasons; however, the effect of height preference is eliminated at population level. |
| تدمد: | 1615-6110 0378-2697 |
| DOI: | 10.1007/s00606-006-0472-3 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::919c544332fff653bf2b641b411c3a22 https://doi.org/10.1007/s00606-006-0472-3 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....919c544332fff653bf2b641b411c3a22 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16156110 03782697 |
|---|---|
| DOI: | 10.1007/s00606-006-0472-3 |