Revue d’Ecologie (Terre et Vie), Vol. 70 (suppt 12 «Espèces invasives » ), 2015 : 42-48
42 SUPERCOOLING ABILITY OF THE EARLY LIFE STAGES OF A PEST SLUG,
DEROCERAS RETICULATUM
1 ACTA, Université de Rennes 1, UMR CNRS 6553 Ecobio, Campus de Beaulieu, Bât 14A, 263 Avenue du Général Leclerc, F-35042 Rennes Cedex, France. E-mail : elminamottin@ hotmail. fr ² ACTA, ICB-VetAgroSup, 1 avenue Bourgelat, F-69280 Marcy l’étoile, France. E-mail : andre. chabert@ acta. asso. fr
3 Université de Rennes 1, UMR CNRS 6553 Ecobio, Campus de Beaulieu, Bât 14A, 263 Avenue du Général Leclerc, F-35042 Rennes Cedex, France. E-mail : maryvonne. charrier@ univ-rennes1. fr
Temperature is an important environmental factor that can affect ectotherm survival as well as sublethal metrics including development, growth and fecundity (Worner, 1992; Butler & Trumble, 2010; Bozinovic et al., 2011; Slotsbo et al., 2011). Some ectothermic species have long been described as having the ability to survive subzero temperatures (i) in a frozen state, where the so-called freeze tolerant species can endure freezing of their body fluids or (ii) by avoiding freezing altogether, where the freeze avoidant species can engineer a depression of the temperature at which ice nucleation of their body fluids spontaneously occurs (Ansart & Vernon, 2003; Slotsbo
