Sex Pheromones: Abolition of Specificity in Hybrid Bark Beetles

Science  03 Jul 1970:
Vol. 169, Issue 3940, pp. 71-72
DOI: 10.1126/science.169.3940.71


Specificity of sex pheromones maintains breeding isolation among three closely related species of spruce-infesting Ips. Hybrids produced in the laboratory were intermediate to the parent species in both attractiveness and response. Pheromones and pheromone receptor types in the hybrids are probably mixtures of those of the parent species.