摘要
分析暗色唇鲮Semilabeo obscurus的表型性状空间结构及内部器官组成特征,为暗色唇鲮的快速分类鉴别和种质保护工作提供参考。采用鱼类传统形态学和现代框架特征研究方法,通过统计学及SPSS因子分析法解构其表型结构特点。结果表明:暗色唇鲮体长与全长、体高、头长、头高、头宽、尾柄长、尾柄高,头长与吻长、眼径、眼间距、尾柄长、尾柄高,尾柄长与尾柄高,头高与头宽以及21项框架距离与体长均呈线性相关关系。头高/头宽、尾柄长/尾柄高及尾鳍基部上端至臀鳍基部末端距离(D5-7)与体长性状关系相对稳定且线性回归相关性较强。主成分特征向量以D4-5(背鳍基部末端-尾鳍基部上端)、D4-6(背鳍基部末端-尾鳍基部下端)、D4-7(背鳍基部末端-臀鳍基部末端)、D3-8(背鳍起点-臀鳍起点)、D3-4(背鳍起点-背鳍基部末端)和D5-7(尾鳍基部上端-臀鳍基部末端)的载荷量绝对值最大,且均为正相关关系,集中反映鱼类尾柄部分的表型特征信息。表型结构性状多维分析结果提示,暗色唇鲮头高/头宽(0.91~0.95)、尾柄长/尾柄高(1.37~1.47)以及尾鳍基部上端至臀鳍基部末端距离与体长比(0.241 3~0.255 3)是代表暗色唇鲮表型结构特征的性状参数。暗色唇鲮内部组织器官组成及结构布局同一般鲤科鱼类相似,具有肠细长、膘较短小的特征,肠长指数14.15~15.76 (15.14),非成熟期个体肠管占腹腔体积的80%以上,膘长度约为鱼体长的14%、腹腔长度的50%。暗色唇鲮的内外结构体现生物体对环境的适应性进化,具有较高研究价值。
Phenotype and interior of an endangered species,Semilabeo obscurus,were studied to establish a rapid identification and classification method to facilitate conservation of the germplasm.Traditional morphological and advanced methodologies were applied,and data subjected to statistics and SPSS factor analyses.Linear relationships were found between the body length and the total length,body height,head length,head height,head width,caudal length,orcaudal height,between the head length and the proboscis length,eye diameter,distance between eyes,caudal length,orcaudal height,between the caudal length and the caudal height,between the head height and the head width,as well as between the 21 frame distance and the body length of S.obscurus.Stable linear regression correlations existed between the body length and the head height/head width ratio,caudal length/caudal depth ratio or D 5-7.The principal component feature vector had the greatest absolute value on the loads of D 4-5,D 4-6,D 4-7,D 3-8,D 3-4 and D 5-7,and they correlated.It reflected the characteristic phenotype of the tail section of the fish.Amultidimensional analysis on the phenotype suggested that the ratios of the head height/head width(0.91-0.95),caudal length/caudal height(1.37-1.47)and D 5-7/body length(0.241 3-0.255 3)could be the key indicators for the properties.In general,the composition and structure of the internal organs of S.obscurus were similar to those of Cyprinidae,having long and thin intestines with short and small swim bladders and an intestinal index of 14.15-15.76(averaging 15.14).The intestines occupied more than 80%of the abdominal cavity of animmature fish;and the length of the bladder,about 14%of the fish body length or 50%of the abdominal cavity length.The information obtained showed the evolution of S.obscurus as it adapted to the environmental changes.
作者
韩耀全
黄博
何安尤
李育森
施军
HAN Yao-quan;HUANG B;HE An-you;LI Yu-sen;SHI Jun(Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture/Guangxi Academy of Fishery Sciences,Nanning,Guangxi 530021,China)
出处
《福建农业学报》
CAS
北大核心
2018年第9期899-905,共7页
Fujian Journal of Agricultural Sciences
基金
广西壮族自治区自然科学基金项目(2013GXNSFEA053003)
广西水产遗传育种与健康养殖重点实验室建设项目(17-259-29)
关键词
暗色唇鲮
表型性状
内部结构
Semilabeo obscurus Lin
phenotype
internal structure
