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2017 ; 6
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English Wikipedia
An insect anti-antiaphrodisiac
#MMPMID28695826
Brent CS
; Byers JA
; Levi-Zada A
Elife
2017[Jul]; 6
(ä): ä PMID28695826
show ga
Passive mechanisms of mate guarding are used by males to promote sperm precedence
with little cost, but these tactics can be disadvantageous for their mates and
other males. Mated females of the plant bug Lygus hesperus are rendered
temporarily unattractive by seminal fluids containing myristyl acetate and
geranylgeranyl acetate. These antiaphrodisiac pheromones are gradually released
from the female's gonopore, declining until they no longer suppress male
courtship. Because starting quantities of these compounds can vary widely, the
repellant signal becomes less reliable over time. Evidence was found of a
complimentary mechanism that more accurately conveys female mating status. Once
inside the female, geranylgeranyl acetate is progressively converted to
geranylgeraniol then externalized. Geranylgeraniol counteracts the
antiaphrodisiac effect despite having no inherent attractant properties of its
own. This is the first evidence for such an anti-antiaphrodisiac pheromone,
adding a new element to the communication mechanisms regulating reproductive
behaviors.