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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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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

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 98809 [ download pdf ]

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Trefwoorden

Discriminant analysis Discriminant analysis Egypt Information > Information processing > Data analysis > Analysis > Statistical analysis > Discriminant analysis Middle east > Mediterranean region > North africa > Developing countries > Egypt Properties > Biological properties > Sexual maturity Properties > Chemical properties > Salinity Artemia Leach, 1819 [WoRMS] MED, Egypt, Arab Rep. [Marine Regions] Marien/Kust

Author keywords

Artemia; Egypt; salinity; maturation; life history traits; discriminant analysis; Mediterranean Basin

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Auteurs		Top
Baxevanis, A. El-Bermawi, N. Abatzopoulos, T.J. Sorgeloos, P., meer

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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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