Paper Information

Journal:   ENVIRONMENTAL SCIENCES   WINTER 2006 , Volume 3 , Number 10; Page(s) 21 To 33.
 
Paper:  INTER- POPULATION MORPHOLOGICAL DIVERSITY IN CHALCALBURNUS CHALCOIDES (GUELDENSTAEDT, 1772) IN HARAZ AND GAZAFRUD RIVERS
 
Author(s):  RAHMANI HOSSEIN, HASANZADEH KIABI BAHRAM
 
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Abstract: 

A study was conducted to determine suitable characters' for separating 2 Shemaya (Chalcalbumus chalcoides) populations of Haraz and Gazafrud Rivers in spring 2004. Using cast net, 73 speciemens were collected in 2 rivers (i.e: 35 in Gazafrud vs. 38 in Haraz). 27 morphometric characters, 11 meristic characters and 20 proportional morphometric characters were used. PCA in SPSS software was used to determine the best separating (isolating) characters of populations and its separation distance. For morphometric characters, 8 factors with about 77/2 % of character diversity within individuals were selected including; total length, fork length body depth, head length and premaxilla length. In the case of meristic characters, four factors with 70/75 % of diversity of characters within individuals were selected including; caudal peduncle scales, scale rows above lateral line and gill reakers (anterior). As far as proportional morphometric character are concerned, seven factors with 81% of character diversity within individuals were selected including I character. The results showed while morphometric as well as proportional morphometric characters were useful for population separation, the meristic characters could not separate the populations.

 
Keyword(s): MORPHOMETRIC, MERISTIC, SHEMAYA (CHALCALBUMUS CHALCOIDES), HARAZ AND GAZAJTUD RIVERS
 
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