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FemaleH. armigera moths are highly attracted by a steam distillate from pigeonpea plants, one of their main hosts. A mixture of six compounds, all sesquiterpenes (β-caryophyllene,α-humulene,α-guajene,α-muurolene,γ-muurolene, andα-bulnesene), mixed in the proportions as found in the steam distillate, elicited the same behavioral responses (oriented upwind(More)
In a behavioral dual-choice test the orientational response of third-instar larvae of Spodoptera littoralis to a certain odor could be increased, following a former experience of the odor. The odorants used were either the odor of a previously eaten host plant or a synthetic plant odor presented in conjunction with food. Inexperienced third-instar larvae(More)
To define the extent to which impulse blockade interferes with the morphological changes of regenerating retinal axons during their growth through the tectum, axons were deprived of activity by repeated intraocular injections of TTX. At intervals between 24 and 189 days after optic nerve section (ONS), a defined group of TTX-silenced axons and of axons with(More)
Following optic nerve section (ONS) in goldfish, the right eye was repeatedly injected with tetrodotoxin (TTX) and the left eye with Ringer solution. At various survival periods after ONS, horseradish peroxidase (HRP) was applied to small groups of axons in dorsal or ventral retina in both eyes. Counts of labeled regenerating retinal axons show that 43 +/-(More)
Responses of antennal lobe neurons to different amounts of the female-produced pheromone blend and to its individual components were investigated in Agrotis segetum males using intracellular recording methods. We identified three physiological types of antennal lobe neurons, categorized according to their response thresholds to single pheromone components(More)
 Moths learn to associate a flower odor with a food reward after a few learning trials. Can a hungry, male moth learn to associate a sex attractant with food instead of with sex? We provided a hungry male with odors of single female sex pheromone components, of the full sex pheromone blend or of a flower odor component as cues in an appetitive learning(More)
To define the extent to which impulse blockade interferes with the morphological changes of regenerating retinal axons during their growth through the tectum, axons were deprived of activity by repeated intraocular injections of TTX. A t intervals between 24 and 189 days after optic nerve section (ONS), a defined group of TTX-silenced axons and of axons(More)
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