The wave forms and activity patterns of Caenorhabditis elegans were examined on agar in the presence of known chemical attractants (NaCl) and repellents (D-tryptophan), and in thermal gradients. Total activity was reduced in both attractants and repellents. Different combinations of transfers between chemicals were investigated. Two thresholds were found for NaCl: 10(-3) M NaC1 caused reduced a...

Methods are presented for determining those parameters of olfactory communication systems most closely related to the diffusion process. Four general cases of diffusion are considered: instantaneous release of the communicating substance in still air, continuous release in still air, continuous release from a moving source as in an odor trail, and continuous release in a wind. The techniques ha...

Abstract The combination of temephos and attractants from O.sativa was effective for lethal ovitrap in laboratory testing. However, the effectiveness field application needs further investigation. study’s objective to determine influence installation sites, season variation, attractant on efficacy. study used a quasi-experimental design. Lethal ovitraps were installed indoors outdoors 102 house...

Attractants used with sticky traps for monitoring navel orangeworm include artificial pheromone lures, ovipositional bait (ovibait) bags, and phenyl propionate; however, the have limitations of potentially becoming ineffective because full or dirty glue surfaces having access to data dependent on increasingly expensive labor. A study comparing detection a commercially available pseudo-acoustic ...

The Drosophila sex pheromone cVA elicits different behaviors in males and females. First- and second-order olfactory neurons show identical pheromone responses, suggesting that sex genes differentially wire circuits deeper in the brain. Using in vivo whole-cell electrophysiology, we now show that two clusters of third-order olfactory neurons have dimorphic pheromone responses. One cluster respo...