Advantages of insect sex attractants pheromones

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Pheromones are chemicals capable of acting like hormones outside the body of the secreting individual, to impact the behavior of the receiving individuals. Pheromones are used from basic unicellular prokaryotes to complex multicellular eukaryotes. In addition, some vertebratesplants and ciliates communicate by using pheromones.

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California Agriculture 59 1 Important successes to date include codling moth in pome fruit, oriental fruit moth in peaches and nectarines, tomato pinworm in vegetables, pink bollworm in cotton and omnivorous leafroller in vineyards. Large-scale implementation projects have yielded significant reductions in pesticide use while maintaining acceptably low crop-damage levels.

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Insects Limited manufactures and sells pheromone lures and traps for insect pests of dried food, textiles, grain, carpets, taxidermy and tobacco. In the late s, scientists clipped thousands of genitalia from the silkworm moth, Bombyx mori, in order to extract its pheromone. Since this time more than 1, pheromones have been identified by scientists worldwide.

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The Pherobase is a freely accessible database of pheromones and semiochemicals. It comprises several databases to provide comprehensive information about pheromones and semiochemicals. The main objective of The Pherobase is to convert scientific data and knowledge from the literature and convert the peer-reviewed information about behaviour-modifying chemicals into an electronically searchable database.

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Ninety per cent of chemical insecticides have been eliminated from commercial orchards in Australia thanks to the use of chemical sex attractants. The CSIRO Division of Entomology has been involved in developing technology that uses pheremones to interrupt the mating process of pests for a number of decades and are currently trialing a newly discovered pheremone to protect persimmon fruit. Insects such as the oriental fruit moth are guided to their mates by the pheromones, released by the opposite sex.

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Insects of different orders responds to some pheromones with aggregation behavior. Male-produced sex attractant have been referred to as aggregation pheromones, because they typically result in the arrival of both sexes at a calling site leading to an increase in density of conspecifics in the vicinity of the pheromone source. Aggregation pheromones have been reported for members of the Coleoptera, Dictyoptera, Hemiptera, Homoptera and Orthoptera and have been identified for hundreds of species.

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Sex pheromones are pheromones released by an organism to attract an individual of the opposite sexencourage them to mate with them, or perform some other function closely related with sexual reproduction. Sex pheromones specifically focus on indicating females for breeding, attracting the opposite sex, and conveying information on species, age, sex and genotype. Non-volatile pheromones, or cuticular contact pheromones, are more closely related to social insects as they are usually detected by direct contact with chemoreceptors on the antennae or feet of insects.

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This chapter gives an account on the general concept of insect semiochemicals, their definitions, classification, formulation, utilization in integrated pest management programs, and the shortcomings of their application. The different semiochemically based insect management techniques, such as mass trapping, mating disruption, and attract-and-kill, are highlighted. The chapter also summarizes a case study from 7-year research on semiochemicals of the invasive red palm weevil, Rhynchophorus ferrugineus.

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The use of pheromones has been instrumental in increasing the effectiveness of both monitoring insect populations and in providing adequate information to enable implementation of cost effective control. Since the discovery of pheromones, a term first used by Karlson and Luschera multiplicity of uses has been found for them involving monitoring and control although no significant applied use was achieved for monitoring until the mid 's. As with any management program, it is important that knowledge of those factors hoping to be controlled is known.

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