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Impact of brine acidification on hatchability, survival and reproduction of Artemia parthenogenetica and Artemia franciscana in salt ponds, Bohai Bay, China
Sui, L.Y.; Deng, Y.G.; Wang, J.; Sorgeloos, P.; Van Stappen, G. (2014). Impact of brine acidification on hatchability, survival and reproduction of Artemia parthenogenetica and Artemia franciscana in salt ponds, Bohai Bay, China. Chin. J. Oceanol. Limnol. 32(1): 81-87. dx.doi.org/10.1007/s00343-014-3107-5
In: Chinese Journal of Oceanology and Limnology. Science Press/Springer: Beijing. ISSN 0254-4059, more
Peer reviewed article  

Available in  Authors 
    VLIZ: Open Repository 279425 [ OMA ]

Keyword
    Artemia Leach, 1819 [WoRMS]
Author keywords
    brine acidification; pH; Artemia; hatching percentage; survival;reproductive traits

Authors  Top 
  • Sui, L.Y.
  • Deng, Y.G.
  • Wang, J.
  • Sorgeloos, P., more
  • Van Stappen, G., more

Abstract
    We studied the effect of pH (pH 5, 6, 7 and 8) on the hatching percentage, survival and reproduction of Artemia strains in Bohai Bay salt ponds. Strains included parthenogenetic Artemia from Bohai Bay (BHB), Artemia franciscana from San Francisco Bay, and A. franciscana artificially produced in salt ponds in Vietnam. The latter was included as a potential inoculum for biological management of salt ponds. The hatching percentage of cysts after 24 h and the survival rate of the tested Artemia strains were significantly reduced when exposed to a culture medium at pH 5 for 18 d (P < 0.05). The tolerance of Artemia to 48 h acid exposure varied with developmental stage, increasing in the following order: juvenile, nauplii, pre-adult, with maximum tolerance in adults. All strains of Artemia tested could not reproduce at pH 5. At pH levels from pH 6-8, a higher pH generally resulted in a shorter brood interval and enhanced ovoviviparity. Hence, we suggest that brine acidification has a negative impact on Artemia populations in the Bohai Bay saltworks. Inoculation of Artemia with either local parthenogenetic Artemia or exotic A. franciscana should be feasible at pH 7–8.

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