Premium
Heterodynamic processes in C occinella septempunctata L . ( C occinellidae: C oleoptera): a mini review
Author(s) -
Suleman Nazia
Publication year - 2015
Publication title -
entomological science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 28
eISSN - 1479-8298
pISSN - 1343-8786
DOI - 10.1111/ens.12109
Subject(s) - voltinism , coccinella septempunctata , diapause , biology , coccinellidae , ecology , zoology , population , life history , larva , demography , predation , predator , sociology
Among ladybirds, diapause has evidently been most studied in C occinella septempunctata L . adults. C occinella septempunctata ( C ‐7), the seven spot, has attracted attention both in E urope and the USA for being heterogeneous as to the induction of diapause. A polyphenic character of diapause is a prominent feature in C . septempunctata and this phenomenon generally and often generates voltinism heterogeneity within populations. A greater part of the C ‐7 population shows an obligatory univoltine cycle, whereas a smaller proportion is facultatively polyvoltine. C occinella s. bruckii in J apan is bivoltine, in which the first generation of adults aestivate while the second generation hibernates. This paper reviews this heterodynamic cycle and its importance in the life history of C ‐7, as reported from different regions of the world. Heterogeneous voltinism and diapause smooth the progress of a portion of C ‐7 populations to take benefit of aphids well into late summer and autumn. Understanding such variation and plasticity in the life history of this species can help in organizing proper biological control attempts using it as a biocontrol agent.