Abstract
AFTER a preliminary period of quiescence newly moulted alate alienicolae of Aphis fabae Scop. take flight, in suitable physical conditions, whatever the quality of the host they are on. When they alight on a host plant after a sufficient flight they do not take off again immediately1 as they do before sufficient flight2, and they may settle down and bear young. Moericke2 thought that this indicated two phases in the life of alate aphids, the Zugphase and Befallsphase, and Muller and Unger3 attributed the transition from one to the other to exhaustion. The following experiments show that the change can be brought about by flight itself, and that it is not necessarily permanent.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
