Journal
MITOCHONDRIAL DNA PART A
Volume 28, Issue 6, Pages 971-973Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/24701394.2016.1186668
Keywords
16S rRNA; genetic comparison; northern snakehead
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Funding
- China Spark Program [2008GA780002]
- National Natural Science Foundation of China [30771652, 30972258]
- Integration of Industry, Education and Research of Guangdong Province [2011B090400270]
- National Experimental Teaching Demonstration Center of Animal Science [4300-214051]
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Relationships of two species of Channa argus (northern snakeheads) named Bicolor type'' and White type'', as well as other six Channa species were investigated based on their partial sequence of mitochondrial DNA 16S rRNA genes in the present study. For the Channa family, the average genetic distance was 0.0863 with the inter-species genetic distance ranged from 0.0173 to 0.1384, and the average intra-species genetic distance in the genus channa was estimated as 0.00273 (range: 0.0019 to 0.0038). For the two C. argus species, the mean pair-wise genetic distance between Bicolor type'' and White type'' northern snakehead was estimated as 0.00218, which was within the intra-species genetic distance interval for Channa species, indicating that they belonged to the same species at molecular level. Moreover, these snakeheads can be divided into two distinct groups via 16S rRNA, which might be more accurate for Channa classification than traditional method based on the absence or presence of the pelvic fins of the fish.
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