Was Ameisenmännchen an der nur finden?

- Die Orchidee Leporella fimbriata
Leporella fimbriata aus Südaustralien wird ausschließlich durch pseudokopulierende Männchen von
Myrmecia urens bestäubt! Sie täuscht wohl vor allem geruchlich eine paarungsbereite Gyne vor. Die Blütengestalt soll dem Ameisenmännchen taktile Reize liefern, die Kopulationsversuche auslösen. Dabei werden Pollinien (Staubbeutel) der Blüten übertragen.
(Bildnachweis: By Trex21 - Own work, CC BY-SA 3.0,
https://commons.wikimedia.org/w/index.p ... 19124) )
Siehe auch:
http://www.flickriver.com/photos/doc44/17701143598/ Rod Peakall, 1989: The unique pollination of Leporella fimbriata (Orchidaceae): Pollination by pseudocopulating male ants (Myrmecia urens, Formicidae) - Zeitschrift Plant Systematics and Evolution 167, 137-148.
https://en.wikipedia.org/wiki/Leporella Abstract:
Leporella fimbriata is a self compatible orchid of southern Australia. It is dependant across its range on unique pollination by sexually attracted male winged ants
Myrmecia urens, which pseudocopulate with the flower. Typical pollination sequences began with an initial circling then zig-zag flight to the flower. Vectors usually alighted on the inflorescence stem and quickly crawled to the flower where they adopted a copulatory position sideways along the wide labellum, pseudocopulatory probing immediately followed. In this position pollen carried on the thorax was deposited on the stigma. Departure from the labellum usually resulted in pollinium removal. Pollinator movements were restricted and the distribution leptokurtic with a mean of 3.141 ± 4.59 m. Pollination was widespread but variable from site to site and season to season with a maximum of 70% of all flowers being pollinated. Pollinator limitation is indicated. Traits essential for this pollination interaction include the coincidence of orchid and ant geographic distributions and the coincidence of flowering with the flight period of the ant. The production of pheromonelike substances and the distinctive floral morphology are also essential for attraction and manipulation of male ants. The ant mating system which the orchid can exploit is also important.
Ich habe das interessante Beispiel einer Blütenbestäubung durch Ameisenmännchen hier gepostet. Mir ist es länger bekannt, aber bis man es dann immer findet, wenn man es mal braucht...
MfG,
Merkur