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Salinity effects on maturation, reproductive and life span characteristics of four Egyptian Artemia populations (International Study on Artemia. LXVIII)
Baxevanis, A.; El-Bermawi, N.; Abatzopoulos, T.J.; Sorgeloos, P. (2004). Salinity effects on maturation, reproductive and life span characteristics of four Egyptian Artemia populations (International Study on Artemia. LXVIII). Hydrobiologia 513(1-3): 87-100. dx.doi.org/10.1023/B:hydr.0000018174.72317.cf
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117, meer
Peer reviewed article  
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Trefwoorden
    Discriminant analysis
    Discriminant analysis
    Egypt
    Information > Information processing > Data analysis > Analysis > Statistical analysis > Discriminant analysis
    MED, Egypt, Arab Rep.
    Middle east > Mediterranean region > North africa > Developing countries > Egypt
    Properties > Biological properties > Sexual maturity
    Properties > Chemical properties > Salinity
    Artemia Leach, 1819 [WoRMS]
    Egypt [Marine Regions]
    Marien/Kust
Author keywords
    Artemia; Egypt; salinity; maturation; life history traits; discriminant analysis; Mediterranean Basin
Auteurs  Top 
  • Baxevanis, A.
  • El-Bermawi, N.
  • Abatzopoulos, T.J.
  • Sorgeloos, P., meer
Abstract
    Three parthenogenetic Artemia populations, i.e. two coastal from Borg El-Arab and El-Max saltworks and one from the inland Qarun Lake, and a bisexual strain (Artemia salina) from the inland carbonate lake of Wadi El-Natrun, all from upper Egypt were assayed for their response in 5 salinities (i.e. 35, 80, 120, 150 and 200 g l-1). The experimental procedure was carried out under laboratory conditions, where the effects of salinity on maturation and ten reproductive and life span characteristics were investigated. The parthenogenetic Egyptian populations are more euryhaline compared to the bisexual one. The two coastal parthenogenetic populations appeared to be very similar in maturation rate and reproductive output at all salinities tested. The inland asexual strain showed a different reproductive response to the elevation of salinity from the two coastal populations. Discriminant function analysis has proven to be a useful tool in determining the differential response of closely related Artemia populations. The bisexual population showed significantly lower reproductive output compared to the parthenogenetic ones and performed best at 35 g l-1; this is the first record of an A. salina population inhabiting a carbonate lake. These findings may provide valuable information on Artemia biodiversity in an area where very little is known.
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