Study on the Growth Pattern of Wild and Domesticated Populations of Acrossocheilus yunnanensis in Northern Guizhou
[Objective]It aimed to study the correlation between body length and weight of Acrossocheilus yunnanensis in northern Guizhou with natural habitat or domesticated condition,as well as to analyze the population growth rules,so as to provide reference for protecting and developing A.yunnanensis resources in local area.[Method]The body length and weight of both the wild populations and domesticated populations of A.yunnanensis were measured,and the relative indexes were analyzed through one-way ANOVA,t-test,and power function regression.[Result]The body length of wild populations of A.yunnanensis ranged from 80 to 171 mm,with an average length of(134.55±20.34)mm,and the body length of domesticated populations ranged from 150 to 245 mm,with an average length of(167.51±15.18)mm.The body weight of wild populations of A.yunnanensis ranged from 21 to 112 g,with an average weight of(69.92±18.99)g,and the body weight of domesticated populationsranged from 52.9 to 143.0 g,with an average weight of(78.03±18.42)g.The average body length and weight of domesticated populations were both significantly bigger than those of wild populations.The length and body weight of wild populations of A.yunnanensis showed left-skewed distributions,while those of domesticated populations showed a right-skewness distribution.The coefficient of variation revealed that the evenness in length and weight among wild populations of A.yunnanensis was lower than that observed in domesticated populations.The relationship between length and body weight of wild populations and domesticated populations of A.yunnanensis were W=0.001 1L1.9896(n=100,R2=0.984 7),and W=0.000 2L2.2119(n=100,R2=0.775 8),respectively.The parameters a of body length of wild populations and domesticated populations ranged from 0.000 005 to 0.009 397,and the parameter b of body weight of wild populations and domesticated populations varied from 1.517 6 to 2.834 1.Parameter a showed a trend from high to low from wild populations to domesticated populations,and parameter b was opposite to that of parameter a.The results of the one-way ANOVA analysis indicated that there were no statistically significant differences in the parameters a and b of wild populations and domesticated populations.The t-test revealed significant difference bewteen the b value and 3 in wild populations,while no significant difference was observed between the b and 3 in domesticated populations.[Conclusion]The growth of the wild populations of A.yunnanensis in northern Guizhou is negative allometric growth,and the growth of domesticated populations is isokinetic growth.The wild environment of A.yunnanensis in northern Guizhou is superior to the domestic test environment,while its comprehensive ecological environment is inadequate in both natural habitat and domestic environment.
Acrossocheilus yunnanensiswild populationdomesticated populationgrowth modelength-weight relationships(LWR)Furongjiang River
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