Biometric comparison of the frontal knob in four populations of Artemia urmiana (Anostraca, Artemiidae) from Urmia Lake (I), northwestern Iran
Alireza Asem1, Nasrullah Rastegar-Pouyani1, Patricio De los Rios2
1. Department of Biology, Faculty of Science, Razi University, Kermanshah, IRAN
2. Departamento de Ciencias Biologicas y Quimicas, Facultad de Ciencias, Universidad Catolica de Temuco, Temuco, CHILESummary:
Artemia is a small crustacean, belonging to the Phylum Arthropoda, Subphylum Crustacea, Class Branchiopoda, and Order Anostraca. Artemia urmiana, has been reported from Urmia Lake, West Azerbaijan Province, Iran. In the male Artemia the antennae are transformed into muscular graspers, which have a frontal knob at their inner side. The frontal knob diameter of Artemia urmiana and its C.V (Coefficient of Variability) in 4 stations were studied. In each case, left and right frontal knobs were measured. The Tukey Test was used for analyzing the data. Based on this study, the size of frontal knob does not have any significant difference between the stations. For partitioning of the stations, diameters of frontal knob and its C.V in each station were used in Hierarchical Cluster Analysis (Fig.1). With regards to this analysis, four stations are separated into three categories between 15-20 spans. however, that the means of frontal knob are not significantly different but C.V can be used as a qua important parameter to demographical study.
Fig.1 - Classification of stations by Hierarchical Cluster Analysis.
