Document Detail

Development and reproduction of Adalia bipunctata (Coleoptera: Coccinellidae) on eggs of Ephestia kuehniella (Lepidoptera: Phycitidae) and pollen.
MedLine Citation:
PMID:  16144016     Owner:  NLM     Status:  MEDLINE    
Due to growing criticism over the use of non-indigenous coccinellids, the two-spot ladybird, Adalia bipunctata (L.), has enjoyed increasing attention for aphid biocontrol in Europe. In the current study, eggs of the Mediterranean flour moth, Ephestia kuehniella Zeller, whether or not supplemented with bee pollen, were evaluated as a factitious food for larvae and adults of A. bipunctata. The predator showed slower larval development and lower survival when reared on live pea aphids, Acyrthosiphon pisum (Harris), than on E. kuehniella eggs. Survival on gamma-irradiated eggs of E. kuehniella was superior to that on frozen flour moth eggs, but other developmental characteristics were similar. Adults of A. bipunctata reared on Ac. pisum were only half as fecund as those offered irradiated or frozen E. kuehniella eggs, but egg hatch was markedly better on live aphids than on flour moth eggs (61 versus 20-27%, respectively). However, when a diet of flour moth eggs was supplemented with frozen moist bee pollen, egg hatch of A. bipunctata was equally as good as on live aphids. Supplementing flour moth eggs with dry pollen did not yield satisfactory results. Only 10% of larvae reached adulthood on moist bee pollen alone and resulting adults weighed less than half as much as those obtained on flour moth eggs. Our findings indicate that A. bipunctata is able to compensate for a suboptimal diet of animal prey by supplementary feeding on flower pollen. It is concluded that pollinivory may be a crucial trait for both the rearing of this natural enemy and its use in biological control programmes.
Patrick De Clercq; Maarten Bonte; Kenny Van Speybroeck; Karel Bolckmans; Koen Deforce
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Pest management science     Volume:  61     ISSN:  1526-498X     ISO Abbreviation:  Pest Manag. Sci.     Publication Date:  2005 Nov 
Date Detail:
Created Date:  2005-10-06     Completed Date:  2006-01-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100898744     Medline TA:  Pest Manag Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  1129-32     Citation Subset:  IM    
Copyright Information:
Copyright 2005 Society of Chemical Industry.
Laboratory of Agrozoology, Department of Crop Protection, Ghent University, Belgium.
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MeSH Terms
Aphids / physiology
Beetles / growth & development*,  physiology*
Feeding Behavior / physiology*
Larva / growth & development
Ovum / chemistry*
Pest Control, Biological / economics,  methods
Pollen / chemistry*
Population Density
Predatory Behavior / physiology
Reproduction / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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