| The
phenotypic response of ME2 (M. Embolon, Greece)
Artemia clone to salinity and temperature |
| A. D. BAXEVANIS
and T. J. ABATZOPOULOS |
Abstract
The phenotypic expression of a single genotypic lineage (ME2)
isolated from the apomictic tetraploid Artemia population of M.
Embolon (Greece) was investigated. For this reason twelve reproductive
and life span characteristics were assayed in six salinity-temperature (S-T)
combinations under laboratory conditions. The ME2 clone
performed best at 22°C and 40 g l-1, the lowest salinity
value reported for parthenogenetic Artemia. Salinity by temperature
interaction proved to be significant (two-way ANOVA, p<0.05) for ten out
of twelve characters studied. Discriminant function analysis gave an
overall prediction of 99.21% over the six S-T combinations tested.
Elevation of salinity had the major impact on most of the characters
scored in this study. The comparison of the reproductive performance of
ME2 clone to that of ME1 (previously isolated from
the same Artemia population) revealed that co-existing clones in
the M. Embolon population respond differently to the increase of
salinity.
. |