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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Chem+Ecol
2016 ; 42
(4
): 300-4
Nephropedia Template TP
gab.com Text
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English Wikipedia
Nocturnal Plant Bugs Use cis-Jasmone to Locate Inflorescences of an Araceae as
Feeding and Mating Site
#MMPMID27074793
Etl F
; Berger A
; Weber A
; Schönenberger J
; Dötterl S
J Chem Ecol
2016[Apr]; 42
(4
): 300-4
PMID27074793
show ga
Inflorescences of Araceae pollinated by cyclocephaline scarab beetles are visited
frequently by a wide array of other arthropods that exploit floral resources
without taking part in pollination, including earwigs, flies, and true bugs. To
date, nothing is known about the cues these insect visitors use to locate the
inflorescences and whether or to what extent floral scents play a role. An aroid
visited by large numbers of plant bugs (Miridae) in addition to cyclocephaline
scarab beetle pollinators is the Neotropical species Dieffenbachia aurantiaca. We
identified the plant bug species and investigated their behavior and arrival time
on the inflorescences. To test the importance of olfactory cues in locating their
host we conducted experiments with open and gauze-bagged inflorescences as well
as natural scent samples of D. aurantiaca. Inflorescence scents were analyzed by
gas chromatography linked to mass spectrometry (GC/MS), and the attractive
potential of the main scent compound was determined by behavioral assays. Three
species of Neella, the most common one being N. floridula, visited the
inflorescences at nightfall, shortly after the beginning of scent emission, and
showed feeding and copulation activity. Bagged inflorescences as well as natural
scent samples attracted similar numbers of plant bugs as the non-bagged
inflorescences, showing that olfactory cues are sufficient for them to locate
their host. Cis-jasmone was the major component within the inflorescence scent
bouquet. In two-choice field bioassays, this compound proved to be highly
attractive to Neella, and thus obviously plays a key role in finding host plants.
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