Water relations, fat reserves, survival, and longevity of a cold-exposed parasitic wasp Aphidius colemani (Hymenoptera: Aphidiinae).
type: Dataset
description: Parasitoids exposed to low temperatures may suffer from extreme physiological conditions inducing direct or indirect chill injuries. Under long cold exposure (which also includes starvation), individuals face a great challenge in maintaining both water balance and energy reserves. Key parameters associated with individual Þtness and physiological parameters related to coldhardiness were analyzed. One-day-old mummies of the aphid parasitoid Aphidius colemani Viereck (Hymenoptera: Aphidiinae) were exposed to cold (2 and 4C) for various periods (1Ð3 wk) under a high relative humidity (75 5% RH) and darkness. High mortality and shortened adult longevity occurred with increasing duration of exposure at low temperatures. Individual parasitoid mass loss increased with cold storage duration and was associated to a marked decrease in dry mass caused by lipid reserve depletion. Water content (water mass/dry mass) slightly increased with cold exposure duration because of starvation. Similar patterns were observed for both temperatures tested. This study emphasizes (1) how energetic reserves may be critical to survive at low temperatures and (2) that the survival and longevity are related, at least in part, to the depletion of energy reserves during starvation.
issued: 2026-05-30T15:32:03.151642
language: en
modified: 2026-05-30T15:32:03.151651
contact point: Organization
  fn: CCSD
keyword: cold-hardiness
keyword: fat-reserves
keyword: infoeu-reposemanticsarticle
keyword: journal-articles
keyword: low-temperature
keyword: sduenvisciences-of-the-universe-physicscontinental-interfaces-environment
keyword: survival
keyword: water-relations
landing page: 0046-225X

Water relations, fat reserves, survival, and longevity of a cold-exposed parasitic wasp Aphidius colemani (Hymenoptera: Aphidiinae).
type: Distribution
format: HTML
issued: 2026-05-30T15:32:03.258316
modified: 2026-05-30T15:32:03.100733
access URL: https://hal.science/hal-00076619

test_moissonnage_selune
type: Agent