Hydrobiologia

, Volume 513, Issue 1, pp 87–100

Salinity effects on maturation, reproductive and life span characteristics of four Egyptian Artemia populations (International Study on Artemia. LXVIII)

  • Athanasios D. Baxevanis
  • Nagy El-Bermawi
  • Theodore J. Abatzopoulos
  • Patrick Sorgeloos
Article

DOI: 10.1023/B:hydr.0000018174.72317.cf

Cite this article as:
Baxevanis, A.D., El-Bermawi, N., Abatzopoulos, T.J. et al. Hydrobiologia (2004) 513: 87. doi:10.1023/B:hydr.0000018174.72317.cf

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. %

ArtemiaEgyptsalinitymaturationlife history traitsdiscriminant analysisMediterranean Basin

Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Athanasios D. Baxevanis
    • 1
  • Nagy El-Bermawi
    • 2
  • Theodore J. Abatzopoulos
    • 1
  • Patrick Sorgeloos
    • 2
  1. 1.Department of Genetics, Development and Molecular Biology, School of Biology, Faculty of SciencesAristotle University of ThessalonikiThessalonikiGreece
  2. 2.Laboratory of Aquaculture & Artemia Reference Center, Faculty of Agricultural and Applied Biological SciencesGhent UniversityGentBelgium