贵州3个斑鳜野生种群形态学差异

doi:10.16378/j.cnki.1003-1111.2020.03.007

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Abstract The morphometric differentiation of wild spotted mandarinfish Siniperca kneri among three different sampling sites of Yuanjiang, Liujiang and Wujiang rivers in Guizhou province were assessed using multivariate analysis methods based on the measured morphological data and the truss network. After data standardization and parameter selection for original data,the statistical analysis was performed on 12 proportional traits and 12 countable traits.The results showed that among the three populations there were significant differences among the nine countable traits in the single factor analysis (P<0.05). Six principal components were constructed, with cumulative contributory ratio of 72.668%. The top three principal components were mainly affected by characters, including body width, caudal peduncle shape, and distance between the eyes. A stepwise discriminant method was used to establish the characteristic discriminant functions of the three stocks, which revealed that the total accuracy rate of discrimination by the cross-validated method was 81.5%. Based on the morphological clustering map, the morphological relationship between the Yuanjiang and Liujiang populations was relatively close, then gather with Wujiang population. The difference coefficient analysis indicated that the difference among the three populations in the caudal peduncle length/body length traits reached the subspecies level (CD>1.28). It is concluded that there were some differences in morphology among the populations, the difference between Liujiang and Yuanjiang was small, but Wujiang was quite different. The established discriminant equation can distinguish the three spotted mandarinfish populations. The findings can be used to identify the three mandarinfish populations in the future, and also provide a theoretical basis for population conservation and breeding.

Key words： Siniperca scherzeri multivariate analysis coefficient of difference

Received: 02 July 2019

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	Articles by authors
	HUANG Sheng
	PAN Qiuzhi
	AN Miao
	YU Ke
	LI Shan
	CHEN Dunxue
	MA Xiuhui

Cite this article:

HUANG Sheng,PAN Qiuzhi,AN Miao, et al. Morphological Differences among Three Wild Populations of Spotted Mandarinfish Siniperca scherzeri in Guizhou Province[J]. Fisheries Science, 2020, 39(3): 350-358.

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https://www.shchkx.com/EN/10.16378/j.cnki.1003-1111.2020.03.007 OR https://www.shchkx.com/EN/Y2020/V39/I3/350

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