Abstract
Interspecific relationships between indigenous ladybird species, Coccinella septempunctata L. and Harmonia axyridis Pallas, and an exotic species, Adalia bipunctata (L.), were assessed in relation to prey abundance. The nature and relative strengths of interactions between indigenous and exotic ladybird species differed in relation to prey availability and species involved. Under conditions of high prey abundance, the negative effect of interactions was limited to slower larval development of A. bipunctata in the presence of H. axyridis larvae. Under conditions of limited food availability, intraguild predation often occurred and C. septempunctata and H. axyridis were intraguild predators and A. bipunctata was intraguild prey. H. axyridis larvae was a stronger intraguild predator of A. bipunctata than C. septempunctata larvae. Possible causes for limited habitat of A. bipunctata after invasion into Japan, and the decrease in abundance of native populations of A. bipunctata in the U.S.A. after introduction of C. septempunctata and H. axyridis are discussed in relation to interactions of A. bipunctata with C. septempunctata and H. axyridis.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.