Cell Stress and Chaperones

, Volume 13, Issue 1, pp 59–66 | Cite as

Exposure of gnotobiotic Artemia franciscana larvae to abiotic stress promotes heat shock protein 70 synthesis and enhances resistance to pathogenic Vibrio campbellii

  • Yeong Yik Sung
  • Carlos Pineda
  • Thomas H. MacRae
  • Patrick Sorgeloos
  • Peter Bossier
Original Paper


Larvae of the brine shrimp Artemia franciscana serve as important feed in fish and shellfish larviculture; however, they are subject to bacterial diseases that devastate entire populations and consequently hinder their use in aquaculture. Exposure to abiotic stress was shown previously to shield Artemia larvae against infection by pathogenic Vibrio, with the results suggesting a mechanistic role for heat shock protein 70. In the current report, combined hypothermic/hyperthermic shock followed by recovery at ambient temperature induced Hsp70 synthesis in Artemia larvae. Thermotolerance was also increased as was protection against infection by Vibrio campbellii, the latter indicated by reduced mortality and lower bacterial load in challenge tests. Resistance to Vibrio improved in the face of declining body mass as demonstrated by measurement of ash-free dry weight. Hypothermic stress only and acute osmotic insult did not promote Hsp70 expression and thermotolerance in Artemia larvae nor was resistance to Vibrio challenge augmented. The data support a causal link between Hsp70 accumulation induced by abiotic stress and enhanced resistance to infection by V. campbellii, perhaps via stimulation of the Artemia immune system. This possibility is now under investigation, and the work may reveal fundamental properties of crustacean immunity. Additionally, the findings are important in aquaculture where development of procedures to prevent bacterial infection of feed stock such as Artemia larvae is a priority.


Temperature stress Osmotic stress Artemia franciscana Hsp70 Cross-protection 


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Copyright information

© Cell Stress Society International 2008

Authors and Affiliations

  • Yeong Yik Sung
    • 1
    • 2
  • Carlos Pineda
    • 1
  • Thomas H. MacRae
    • 3
  • Patrick Sorgeloos
    • 1
  • Peter Bossier
    • 1
  1. 1.Laboratory of Aquaculture & Artemia Reference Center, Faculty of Bioscience EngineeringGhent UniversityGentBelgium
  2. 2.Department of Fishery and Aquaculture, Faculty of Agrotechnology and Food ScienceUniversity Malaysia Terengganu (UMT)KualaMalaysia
  3. 3.Department of BiologyDalhousie UniversityHalifaxCanada

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