Morphometric Differences between Mandarinfish Siniperca chuatsi and Bigeye Mandarinfish S. kneri and their Intermediate Form in the Middle Reaches of the Changjiang River
Abstract：In order to identify and distinguish the “intermediate form” samples collected from Poyang Lake and Dongting Lake, which have the characteristics of both mandarinfish Siniperca chuatsi and bigeye mandarinfish S. kneri, the countable characteristics(numbers of fins and gill rakes) and morphological framework characteristics of “intermediate form”, mandarinfish and bigeye mandarinfish were compared and determined, and analysis of variance, principal component analysis, discriminant analysis, and STRUCTURE cluster analysis were performed. The results showed that: (1) the intermediate form was between mandarinfish and bigeye mandarinfish, in terms of eye size, relative position of the posterior edge of the maxilla to the posterior edge of the eye, and the bulge degree of the head and back. (2) There were no significant differences in the countable traits (number of fin ray, and number of gill raker) between the intermediate form and mandarinfish and bigeye mandarinfish. (3) Analysis of variance showed that in quantitative traits, the difference between the intermediate form and mandarinfish and bigeye mandarinfish mainly lied on: the relative position of the maxillary bone to the eye, the eye diameter, the protruding degree of the head and back, and the length of the caudal peduncle; principal component analysis showed some frame traits of the back of the head and the anterior part of the back of the head and body height were the main components of morphometric difference between the intermediate form and mandarinfish and bigeye mandarinfish. The discriminant accuracy of mandarinfish, bigeye mandarinfish and intermediate form was 90%, 81.8% and 85.4%, respectively, with the average discriminatory accuracy of 85.6%. STRUCTURE cluster analysis showed that the morphometric characteristics of the intermediate form were between that of mandarinfish and bigeye mandarinfish, and inclined towards mandarinfish. The findings can provide some basic data for understanding of intraspecific variation or interspecific hybridization of mandarin fishes in the Changjiang River.
朱书琴, 赵金良, 周云红, 吴红岩. 长江中游湖泊翘嘴鳜、大眼鳜与其“中间类型”的形态学差异[J]. 水产科学, 2021, 40(4): 530-536.
ZHU Shuqin, ZHAO Jinliang, ZHOU Yunhong, WU Hongyan. Morphometric Differences between Mandarinfish Siniperca chuatsi and Bigeye Mandarinfish S. kneri and their Intermediate Form in the Middle Reaches of the Changjiang River. Fisheries Science, 2021, 40(4): 530-536.
[1]周才武,杨青,蔡德霖.鳜亚科SINIPERCINAE鱼类的分类整理和地理分布[J]. 动物学研究,1988,9(2):113-125. [2]成庆泰,郑葆珊.中国鱼类系统(上册)[M].北京:科学出版社,1987. [3]湖北省水生生物研究所鱼类研究室.长江鱼类[M]. 北京:科学出版社,1976. [4]孔晓瑜.中国鳜亚科(Sinipercinae)七种鱼类骨骼形态特征的比较研究[J]. 中国海洋大学学报(自然科学版),1993,22(3):116-124. [5]余先觉.中国淡水鱼类染色体[M].北京:科学出版社,1989. [6]赵金良,李思发,蔡完其,等.基于细胞色素b基因序列的东亚鳜类系统发育关系[J]. 动物学报,2006,52(4):676-680. [7]Zhao J L, Wang W W, Li S F, et al. Structure of the mitochondrial DNA control region of the sinipercine fishes and their phylogenetic relationship[J]. Acta Genetica Sinica,2006,33(9):793-799. [8]吴晓蕙,梁旭方,何珊.鳜属3个物种的遗传多样性分析[J]. 暨南大学学报(自然科学与医学版),2014,35(3):255-260. [9]赵程,梁旭方,田昌绪,等.鳜属5种鱼类微卫星遗传多样性分析[J]. 华中农业大学学报,2015,34(5):76-80. [10]梁旭方,何珊,等.鳜鱼遗传育种与饲料养殖[M]. 北京:科学出版社,2018. [11]Li C H, Guillermo Ortí, Zhao J L. The phylogenetic placement of sinipercid fishes (“Perciformes”) revealed by 11 nuclear loci[J]. Molecular Phylogenetics & Evolution,2010,56(3):1096-1104. [12]Song S L, Zhao J L, Li C H. Species delimitation and phylogenetic reconstruction of the sinipercids (Perciformes: Sinipercidae) based on target enrichment of thousands of nuclear coding sequences[J]. Molecular Phylogenetics & Evolution,2017,111:44-55. [13]余帆洋.长江鳜和大眼鳜复合种的遗传多样性研究[D]. 广州:暨南大学,2011. [14]杨敏.翘嘴鳜、大眼鳜和斑鳜的分子标记及种群遗传结构研究[D]. 武汉:华中农业大学,2014. [15]黄胜,潘秋芝,安苗,等.贵州3个斑鳜野生种群形态学差异[J]. 水产科学,2020,39(3):350-358. [16]曲焕韬,杨元金,鲁雪报,等.岩原鲤形态性状与体质量的相关性及通径分析[J]. 水产科学,2018,37(6):769-774. [17]林明雪,王剑,王军,等.分子群体遗传学方法处理鲤形态学数据的适用性[J]. 水产学报,2015,39(6):769-778. [18]Falush D, Stephens M, Pritchard J K. Inference of population structure using multilocus genotype data: linked loci and correlated allele frequencies[J]. Genetics,2003,164(4):1567-1587. [19]Sistrom M, Edwards D L, Donnellan S, et al. Morphological differentiation correlates with ecological but not with genetic divergence in a Gehyra gecko[J]. Journal of Evolutionary Biology,2012,25(4):647-660. [20]曹晓颖.鳜鱼骨骼结构、骨化发育及颌骨重塑的初步研究[D]. 上海:上海海洋大学,2019. [21]任慕莲.黑龙江的鳜鱼[J]. 水产学杂志,1994,7(2):17-26. [22]李达,杨春.鄱阳湖鳜鱼的生物学[J]. 江西农业学报,1998,10(4):14-22. [23]康伟.东北亚区域绒螯蟹的遗传差异与渐渗[D]. 上海:上海海洋大学,2016. [24]熊国勇.鄱阳湖区湿地内湖鱼类资源初步调查[J]. 江苏农业科学,2018,46(21):194-198. [25]周建军,张曼.长江鄱阳湖问题的原因及湖口建闸的影响[J]. 水资源保护,2019,35(2):1-11. [26]Lamer J T, Dolan C R, Petersen J L, et al. Introgressive hybridization between bighead carp and silver carp in the Mississippi and Illinois Rivers[J]. North American Journal of Fisheries Management,2010,30(6):1452-1461. [27]Lamer J T, Ruebush B C, Arbieva Z H, et al. Diagnostic SNPs reveal widespread introgressive hybridization between introduced bighead and silver carp in the Mississippi River Basin[J]. Molecular Ecology,2015,24(15):3931-3943.
2021, Vol. 40 
