Company Filing History:
Years Active: 1979
Title: Thyril L Ladd, Jr: Innovator in Pheromone Research
Introduction
Thyril L Ladd, Jr. is a notable inventor based in Wooster, OH (US). He has made significant contributions to the field of pheromone research, particularly in understanding the mating behaviors of the Japanese beetle.
Latest Patents
Ladd holds a patent for a sex pheromone produced by the female Japanese beetle, specifically the compound (Z)-5-(1-decenyl)dihydro-2(3H)-furanone. This compound was isolated from virgin female Japanese beetles, Popilla Japonica, and was found to attract male beetles in field bioassays. Interestingly, the synthesized racemic mixture of this compound did not attract male Japanese beetles. The research also involved the stereospecific synthesis of the Z- and E-isomers and the saturated analog of both enantiomers. The pure synthetic (R,Z)-5-(1-decenyl)dihydro-2(3H)-furanone was competitive with live females and the pheromone isolated from live females in attracting males. However, the male response was strongly inhibited by small amounts of the (S,Z)-isomer.
Career Highlights
Ladd's work has been instrumental in advancing the understanding of chemical communication in insects. His research has implications for pest management and ecological studies, showcasing the importance of pheromones in the mating strategies of beetles.
Collaborations
Ladd has collaborated with notable colleagues, including James H Tumlinson, III, and Michael G Klein. Their combined expertise has contributed to the depth and breadth of research in this area.
Conclusion
Thyril L Ladd, Jr. is a pioneering inventor whose work on pheromones has opened new avenues in entomological research. His contributions continue to influence the field and provide insights into insect behavior.