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Induced thermotolerance and stress resistance in larvae of the freshwater prawn, Macrobrachium rosenbergii (de Man, 1879) Rahman, M.M.; Wille, M.; Cavalli, R.O.; Sorgeloos, P.; Clegg, J.S. (2004). Induced thermotolerance and stress resistance in larvae of the freshwater prawn, Macrobrachium rosenbergii (de Man, 1879). Aquaculture 230(1-4): 569-579. dx.doi.org/10.1016/j.aquaculture.2003.10.010 In: Aquaculture. Elsevier: Amsterdam; London; New York; Oxford; Tokyo. ISSN 0044-8486; e-ISSN 1873-5622, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 54596 [ download pdf ]

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Trefwoorden

Biological stress Environmental effects > Temperature effects > Heat shock Properties > Biological properties > Tolerance > Temperature tolerance Macrobrachium Spence Bate, 1868 [WoRMS] Zoet water

Author keywords

Macrobrachium; heat shock; induced thermotolerance; stress

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Auteurs		Top
Rahman, M.M. Wille, M., meer Cavalli, R.O.	Sorgeloos, P., meer Clegg, J.S.

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Abstract

Optimal conditions for heat shock (HS) were used to demonstrate induced thermotolerance (ITT) in larvae of the prawn, Macrobrachium rosenbergii. Larvae from three different broodstock nutritional regimes exhibited comparable degrees of ITT, which remained high for about 4 days. Survival and growth of larvae given the standard HS treatment (37 °C for 30 min) were not statistically different from those of controls, so the cost of mounting a heat shock response was not sufficient to reduce those parameters. However, the percentage of heat-shocked larvae undergoing metamorphosis appeared to be slightly lower than that of controls. Previously heat-shocked larvae withstood hypersalinity exposures much better than control larvae, but showed the same survival level when both were challenged with ammonia toxicity. We suggest that the use of induced thermotolerance might provide a means to improve the performance of larvae during transport and/or initial inoculation into grow-out ponds. The present paper provides the basis upon which that suggestion might be examined.

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