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In the case of flying insects - such as butterflies - the pheromone as a molecule must not be too large, otherwise the vapor pressure and volatility are too low. Thus, over 200 identified sex pheromones of butterfly species are mono- and bis-olefinic fatty aldehydes, fatty alcohols and their acetates with chains of 10 to 18 carbon atoms. [40]
A pheromone (from Ancient Greek φέρω (phérō) 'to bear' and hormone) is a secreted or excreted chemical factor that triggers a social response in members of the same species. Pheromones are chemicals capable of acting like hormones outside the body of the secreting individual, to affect the behavior of the receiving individuals. [1]
It has been shown that the hair-pencil pheromones serve both as an aphrodisiac or tranquilizer for the female, but sometimes as a repellent to other conspecific males. In an experiment with heliothine moths , male hair-pencil compounds were extracted and tested against various male and female treatments. [ 1 ]
Sex pheromones have found applications in pest monitoring and pest control. For monitoring, pheromone traps are used to attract and catch a sample of pest insects to determine whether control measures are needed. For control, much larger quantities of a sex pheromone are released to disrupt the mating of a pest species.
Pheromones can be used instead of insecticides in orchards. Pest insects are attracted by sex pheromones, allowing farmers to evaluate pest levels, and if need be to provide sufficient pheromone to disrupt mating. Chemical communication in insects is social signalling between insects of the same or different species, using chemicals.
Queen butterfly. Sexual pheromones are defined as odors and are one of the prevalent ways in which social male insects find females to mate with. They can be produced in either males or females. The central roles of pheromones are to trigger behavioral interactions between the two sexes. [10] Ultimately, this brings the sexes together for ...
Pheromones are chemicals capable of acting outside the body of the secreting individual to impact the behavior of the receiving individual. [5] There are alarm pheromones, food trail pheromones, sex pheromones, and many others that affect behavior or physiology. [6] Their use among insects has been particularly well documented. In addition ...
Many butterflies use chemical signals, pheromones; some have specialized scent scales or other structures (coremata or "hair pencils" in the Danaidae). [69] Vision is well developed in butterflies and most species are sensitive to the ultraviolet spectrum. Many species show sexual dimorphism in the patterns of UV reflective patches. [70]