Question
Male silk moths are attracted to females by a sex attractant released by the female moth. a. chemical communicationb. auditory communicationc. visual communicationd. tactile communication
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Female silkworm moths ( Bombyx mori ) attract males by emitting chemical signals that spread through the air. A male hundreds of meters away can detect these molecules and fly toward their source. The sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. Each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. Based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. What predictions does your hypothesis make? Design an experiment to test one of these predictions.
A male moth uses his antennae to detect the concentration of a pheromone on each side of his body, allowing him to fly toward the female that is producing the pheromone. Explain how sensory receptors, peripheral nerves, and the central nervous system interact to allow moths to compare pheromone concentrations in the air surrounding each antenna.
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