Coccinella septempunctata extinction status

IOBC/WPRS, Lindau, Switzerland, xiv+212 pp Ideabook on Functional Biodiversity at the Farm Level.

1967b: Selection of aphid prey by Adalia bipunctata L. 1967a: The effects of different aphid foods on Adalia bipunctata L. Elsevier, London, 396 pp Go to original source. (ed.) 1998: Conservation Biological Control. 1979: Coccinella septempunctata in the United States: recolonizations and notes on its ecology. 2001: Larval interactions in aphidophagous predators: effectiveness of wax cover as defence shield of Scymnus larvae against predation from syrphids. 1992: Laboratory study of cannibalism and interspecific predation in ladybirds. 2001: Olfactory behaviour of convergent lady beetles (Coleoptera: Coccinellidae) to alarm pheromone of green peach aphid (Hemiptera: Aphididae). Received: SeptemRevised: NovemAccepted: NovemPublished: FebruShow citation Keywords: Coccinellidae, ladybirds, Coccinella septempunctata, Harmonia axyridis, Adalia bipunctata, Coleomegilla maculata, biological control, diapause, diet, foraging, intraguild predation, migration, oviposition, polyphenism, reproduction, voltinism We suggest that one explanation for the broad geographic success of C7 resides in an ecological plasticity that is based on both genetic and phenotypic polymorphisms. An absence of reproductive diapause in males and pre-hibernation mating are other significant adaptations, along with the tendency to produce offspring in excess of the carrying capacity of local food resources. The ability to temporarily suspend oviposition, combined with heterogenous voltinism and diapause tendencies, enable a portion of C7 populations to feed and reproduce on unpredictably occurring aphid populations. Given its high mobility and eurytopy, the inhibition of oviposition in the presence of conspecific larval trails represents an adaptive advantage that favors increased egg dispersal and lowers the risk of offspring mortality due to cannibalism. Although these traits appear to be neutral or negative, many aspects of population plasticity are advantageous for C7, often acting in concert with a bet-hedging strategy. axyridis and Adalia bipunctata, whereas it is not an intraguild predator of these species. Although adult size is large, preimaginal stages are palatable to those of H. The intraguild status of C7 is intermediate.

C7 is euryphagous, but less polyphagous than Harmonia axyridis or Coleomegilla maculata in that it cannot develop or reproduce on non-aphid food. Institute of Entomology, Biological Centre, Czech Academy of Sciences, ДЊeskГ© BudД›jovice, 37005 Czech Republic e-mail: 2Дepartment of Entomology, Agricultural Research Center-Hays, Kansas State University, Hays, Kansas, 67601 USA e-mail: were examined that could be responsible for the predominance of Coccinella septempunctata (C7) in most habitats of the Palaearctic and for its successful invasion of the Nearctic Region.

Coccinella septempunctata extinction status