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Optimisation of a semiochemical slow-release alginate formulation attractive towards Aphidius ervi Haliday parasitoids by Stéphanie Heuskin; Stéphanie Lorge; Bruno Godin; Pascal Leroy; Isabelle Frère; François J Verheggen; Eric Haubruge; Jean-Paul Wathelet; Michèle Mestdagh; Thierry Hance; Georges Lognay is a Agricultural and Biological Sciences article available to read on EtoBox.
What is Optimisation of a semiochemical slow-release alginate formulation attractive towards Aphidius ervi Haliday parasitoids about?
## Abstract **BACKGROUND:** Optimisation of alginate formulations is described in order to develop semiochemical (__E__‐β‐farnesene and __E__‐β‐caryophyllene) slow‐release devices in biological control approaches by attracting predators and parasitoids of aphids. Various formulation criteria were optimised with respect to semiochemical encapsulation capacity. Moreover, the optimised formulation was characterised by texturometry and confocal microscopy. The slow‐release rates of semiochemicals were calculated in laboratory controlled conditions. The attractiveness of semiochemical formulations towards __Aphidius ervi__ was demonstrated by olfactometry. **RESULTS:** Two major parameters were highlighted in encapsulation optimisation: the type of alginate (Sigma L) and the type of crosslinker ion (Ca^2+^). Other formulation parameters were optimised: ionic strength (0.5 M), Ca^2+^ (0.2 M) and alginate (1.5%) concentrations and the maturation time of beads in CaCl~2~ solution (48 h). After physical characterisation of beads, semiochemical slow‐release measurements showed that alginate formulations were efficient sesquiterpene releasers, with 503 μg of __E__‐β‐farnesene and 1791 μg of _
Who reads Optimisation of a semiochemical slow-release alginate formulation attractive towards Aphidius ervi Haliday parasitoids?
It is typically read by researchers, students, and practitioners in Agricultural and Biological Sciences.
- Author
- Stéphanie Heuskin; Stéphanie Lorge; Bruno Godin; Pascal Leroy; Isabelle Frère; François J Verheggen; Eric Haubruge; Jean-Paul Wathelet; Michèle Mestdagh; Thierry Hance; Georges Lognay
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1526-498X)
- Published
- 2011
- Language
- EN
- Field
- Agricultural and Biological Sciences (Life Sciences)