Nippostrongylus brasiliensis: factors influencing movement of males toward a female pheromone.
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Biomedical subjects
Publications and source records attributed to H H Shorey.
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The synthetic sex pheromone (gossyplure) of the pink bollworm was evaporated into the atmosphere of three cotton fields during an entire growing season. The resulting disruption of premating pheromone communication between male and female moths led to a reduction in the population of larvae infesting cotton bolls. This larval control was comparable, in terms of both effectiveness and expense of materials used, to the control achieved in ten comparison fields by growers using conventional insecticide applications.
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Seven-day-old male and female Nippostrongylus brasiliensis exhibit mutual heterosexual attraction in vitro. A strong dosage-dependency to female pheromone was present in responding male N. brasiliensis. Male helminths were significantly attracted to as few as three female worms. Female helminths were less responsive to male pheromone dosage in vitro. No indication of male homosexual attraction, arrestment, or repulsion was evident. Female homosexual trials suggested that an inhibition of movement occurred in the responding female helminths.
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