Effects of starvation on body composition and cold tolerance in the collembolan Orchesella cincta and the isopod Porcellio scaber

Water Relations, Fat Reserves, Survival, and Longevity of a Cold-exposed Parasitic WaspAphidius colemani(Hymenoptera: Aphidiinae)

“…Therefore, during starvation, lost tissues mass must be replaced, in some species, by water which can result in an increase in hydration level if an easy access to water is possible (Hervant et al 1999). Similar increase in WC under food deprivation associated with low temperatures has previously been observed (Lavy et al 1997, Renault et al 2002b, Levie 2002. Moreover, like dormant insects, quiescent mummies maintain a low metabolism, which requires and consumes energy.…”

“…Body weight loss, associated not only with water loss but also with the consumption of carbohydrate and lipid reserves, can be a signiÞcant factor of low temperature survival (Leather et al 1993). In cold temperatures conditions, insect metabolism relies exclusively on body energy reserves (Pullin 1987, Lavy et al 1997. Low temperatures can critically affect energy reserves (David andVannier 1996, Renault et al 2002a).…”

Proteomic profiling of a parasitic wasp exposed to constant and fluctuating cold exposure

“…Aconitase (spot 345), fumarase (spot 29) and malate dehydrogenase (spot 95) are involved in the TCA cycle (Lehninger et al, 1993). During low temperature exposure, insects are fasting and basal metabolism must rely exclusively on body energy reserves to survive (Pullin, 1987;Lavy et al, 1997). It has been shown that lipid reserves were consumed during cold exposure in A. colemani (Colinet et al, 2006b).…”

Toxicity of abamectin to the terrestrial isopod Porcellio scaber (Isopoda, Crustacea)

“…Box represents first quartile, median value, and third quartile decrease to approx. 1% upon starvation (van Brummelen and Stuijfzand 1993;Lavy et al 1997;Ribeiro et al 2001). So, using the latter value, internal concentrations ranged from an estimated 2.1 to 775 lg/g lipid at exposure levels between 3 and 300 mg/kg dry soil.…”