The investigation and morphological study of two type of Crass carp : Ctenopharyngodon idella and survival rate of their larvae

The two groups of grass carp, have been propagated in North and South fish farms and then the larvae were transferring to Abziroshd and culture fish farm of Mazandaran. The fingerling at eight weight classes of 2 to 500 gram were investigated morphologically and some morphometric and meristic were compared. The South grass carp was significant difference (P<0.05) with the North, in case of weight with the same length, number of vertebral and gill raker. The coefficient of variance (CV) of meristic characters of South Grass carp was in the range of 1.2 to 9.8 while in Mazandaran grass carp 2.8 to 8.6. This CV illustrate the low variance in both population. This research study showed that the two stocks can be regard as difference races from one ancestor.

Bibliographic Details

Main Authors:	Yousefian, Mehdi, Naderi, M., Khalaghi, A., Navazandeh, S., Taleshian, H.
Format:	Report biblioteca
Language:	Persian
Published:	Iranian Fisheries Science Research Institute 2011
Subjects:	Meristic, Morphometric, Grass Carp, Population, Investigation, Survival rate, Larvae, Ctenopharyngodon idella,
Online Access:	http://hdl.handle.net/1834/14091
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