Pheromones response inhibition

Birch M. C. and Light D. M. (1977) Inhibition of the attractant pheromone response in Ipspini and Ipsparaconfusus (Coleoptera Scolytidae) field evaluation of ipsenol and linalool. J. Chem. Ecol. 3, 257-267. 

Petroski, R. J. and Weisleder, D. (1997). Inhibition of Carpophilus freemani Dobson (Coleoptera Nitidulidae) aggregation pheromone response by a Z-double-bond pheromone analog../. Agric. Food Chem., 45, 943-945. 

Howe, N.R., 1976b. Proline inhibition of a sea anemone alarm pheromone response. J. Exper. Biol., 65 147—156. 

Ipsenol (21) and linalool (128), an isomer of ipsenol produced by male I. pirn and female /. paraconfusus, had originally been implicated in the mutual inhibition of attractant pheromone response between these two species 464f). However, this hypothesis was modified when Birch and Light 466) reported that ipsenol inhibits attacks by I. pini on ponderosa pine logs baited with males of I. pini and suggested that the concentration of ipsenol (21) is critical for effective suppression of the attack. They therefore denied that linalool acts as inhibitors as was first thought. 

Birch, M.C., and D.L. Wood Mutual Inhibition of the Attractant Pheromone Response by Two Species of Ips (Coleoptera Scolytidae). J. Chem. Ecol. 1,101-113 (1975). 

Chirality of molecules is an important aspect of their structure in all fields, no less among insect substances. Many pheromones and hormones are chiral, and the behavioural response they produce may vary greatly with the chiral form. For example, the unnatural enantiomer of a pheromone can inhibit completely the response to the natural enantiomer, the natural pheromone may be a blend of unequal proportions of... 

Inamura K. and Kashiwayanagi M. (2000a). Inhibition of fos-immunoreactivity in response to urinary pheromones by beta-adrenergic and serotonergic antagonists in the rat accessory olfactory bulb. Biol Pharm Bull 23, 1108-1110. 

An important subset of pheromone-specialist PNs in male M. sexta receives input from both component A and component B input channels, described above, but the physiological effects of the two inputs are opposite (72). That is, if antennal stimulation with component A leads to excitation, then stimulation with component B inhibits the intemeuron, and vice versa. Simultaneous stimulation of the antenna with both components A and B elicits a mixed inhibitory and excitatory response in these special PNs. Thus these neurons can discriminate between the two inputs based upon how each affects the spiking activity of the cell. These PNs also respond uniquely to the natural pheromone blend released by the female these pheromone specialist neurons have enhanced ability to follow intermittent pheromonal stimuli occurring at natural frequencies of 10 stimuli per sec (77). 

Fig. 6.1b). Although they are probably present in most cockroach species, sex-specific contact pheromones have been identified in only a few species. They are thought to be distributed throughout the epicuticular surface and are perceived by means of antennal contact and with the mouthparts. Female-produced contact pheromones elicit courtship responses in males however, in some cockroaches, stridulation and hissing may combine with, or operate in place of, contact chemore-ception. In addition, male contact pheromones may function to inhibit courtship in other males. 

The neural inhibition of pheromone production has been implicated in several moths. In L. dispar, it is thought that the presence of sperm in the spermatheca results in a neural signal that is responsible for pheromonostasis (Giebultowicz et al., 1991). Demonstration that a signal sent via the VNC is regulating the... 

Tumlinson J. H., Klein M. G., Doolittle R. E., Ladd T. L. and Proveaux A. T. (1977) Identification of the female Japanese beetle sex pheromone inhibition of male response by an enantiomer. Science 197, 789-792. 

Gadenne C., Dufour M. C. and Anton S. (2001) Transient post-mating inhibition of behavioural and central nervous responses to sex pheromone in an insect. Proc. R. Soc. Lond. B 268, 1631-1635. 

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