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Sexual dimorphism in
Artemia urmiana in four different geographical stations from the
Urmia Lake ,West Azerbaijan Province, Iran
Alireza Asem1, Nasrullah Rastegar-Pouyani1, Naser Agh2
1. Department of Biology, Faculty of Science, Razi University, Kermanshah,
IRAN
2. Artemia and Aquatic Animals Research Center, Urmia
University, Urmia, IRAN
Summary:
Sexual dimorphism is an important principle in Biosystematics and
Evolutionary studies of animal kingdom. In this survey, four
geographical stations were chosen in the Urmia Lake (N2; M3-2; M1-2; S2)
in order to study the sexual dimorphism among Artemia populations.
Thirty male and female samples of Artemia urmiana were examined From
each station, (twelve morphological characters were measured) and number
of setae per furca were counted. Primary ecological factors were
recorded for each station (Tab.1). T-Test was used to find out
significant difference between means. Principal Components Analysis and
Discriminant Function Analysis were used for classification of male and
female samples in each station. In the PCA in each station male and
female groups of Artemia urmiana were separated (Fig.1). In the
Discriminant Analysis, in each station 100% of original groups were
correctly classified.
Table 1. The primary ecological
factors recorded from stations.
Fig 1. Classification of the male
and female groups in each station by PCA.
Location of Stations
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