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Association of cone thermogenesis and volatiles with pollinator specificity in Macrozamia cycads

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Terry, I., Moore, C.J., Walter, G.H., Forster, P.I., Roemer, R.B., Donaldson, J.D. and Machin, P.J. (2004) Association of cone thermogenesis and volatiles with pollinator specificity in Macrozamia cycads. Plant Systematics and Evolution, 243 . pp. 233-247. ISSN 03782697 (ISSN)

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Article Link: https://doi.org/10.1007/s00606-003-0087-x

Abstract

Cone traits (volatile components and thermogenesis) of three cycad species in the genus Macrozamia were examined for differences related to their specific insect pollinators, the weevil, Tranes spp., or the thrips, Cycadothrips chadwicki. Linalool (>80% of emissions) dominated cone volatile components of M. machinii (Tranes-pollinated) and beta-myrcene was a minor component (<9% of emissions). Volatiles of M. lucida and M. macleayi cones (Cycadothrips-pollinated) were dominated by beta-myrcene (up to 97% of emissions), but no linalool was detected. Pollinator movement into and out of cones coincided with cone thermogenesis and peak odor emission: around sunset for Tranes, and at mid-day for Cycadothrips. Female cone traits were similar to those of their conspecific male cones. Differences in cone traits between Macrozamia species may thus be responsible for conferring pollinator specificity in areas of sympatry.

Item Type:Article
Subjects:Science > Entomology
Plant culture
Live Archive:01 Feb 2024 03:16
Last Modified:01 Feb 2024 03:16

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