pheromonen.

1959 P. Karlson & M. Lüscher in Nature 3 Jan. 55/2 We propose..the designation ‘pheromone’ for this group of active substances... Pheromones are defined as substances which are secreted to the outside by an individual and received by a second individual of the same species, in which they release a specific reaction, for example, a definite behaviour or a developmental process.

1965 Listener 14 Jan. 57/2 Our observation of ant colonies..has led us to believe that as few as ten pheromones, transmitted singly or in combination, might suffice for the total organization of ant society.

1975 D. S. Hill Agric. Insect Pests of Tropics iii. 23 Behavioural control with several types of pheromone may be possible, but attention has been focused on pheromones causing aggregation for mating, feeding or oviposition.

1995 New Scientist 6 May 17/2 If the pike had eaten swordtails, a common aquarium species which does not produce an alarm pheromone, the minnows swam around confidently.

2002 D. Aitkenhead Promised Land iv. 41 Terry's attention turned to a display of bottles of pheromone scent, apparently guaranteed to make him irresistible to other men.

1959 Ann. Rev. Entomol. 4 39 Pheromonal secretion need not occur in definite glands (though that is the case normally).

1971 Nature 16 Apr. 432/1 Odour fingerprinting techniques and gas chromatography now make the detection and preparation of human pheromonal agents feasible if they exist.

2000 N.Y. Times Mag. 4 June 14 (advt.) What makes a scent work well on one individual and not on another depends on each person's chemical and pheromonal makeup.