大黄鱼形态指标体系及雌雄差异分析  

Analysis of Morphological Index System and Sexual Differences of Large Yellow Croaker (Larimichthys crocea)

作　　者：谌微[1,2] 王盼盼[1,2] 肖世俊 刘洋[1,2] 叶坤[1,2] 陈庆凯 王志勇[1,2] 

机构地区：[1]集美大学水产学院,福建厦门361021 [2]农业部东海海水健康养殖重点实验室,福建厦门361021 [3]福建省宁德市水产技术推广站,福建宁德352100

出　　处：《集美大学学报（自然科学版）》2014年第6期401-408,共8页Journal of Jimei University：Natural Science

基　　金：国家863计划资助项目(2012AA10A403)

摘　　要：为研究大黄鱼主要形态指标及雌雄形态差异,测量及分析了554尾大黄鱼12项计量性状及11项标准化性状.主成分分析表明,大黄鱼主要形态指标可分为整体框架结构、肥瘦程度、头部与吻长、躯干及尾部和胸腔纵切面大小5个指标;对计量性状分析显示,雌鱼个体间变异较雄鱼更大,雌雄形态差异较大的有体重、体高及体厚;对标准化性状分析显示,丰满度、体长∶体高、体长∶体厚、头长∶眼径及尾长∶尾柄高等5项性状的差异达到极显著水平(P<0.01),其中以体长∶体厚差异最大.这些性状可为雌雄辨别提供参考.To study the main morphological indexes of large yellow croaker （Larimichthys crocea） and morphological variations between male and female, a total of 12 quantitative characters and 11 standardized characters of 544 individuals was measured and analyzed. Principal component analysis （PCA） indicated that the morphological index system of large yellow croaker could be classified into the overall framework structure, the level of obesity, the head and snout length, the trunk and caudal peduncle and the size of chest longitudi- nal section. The analysis of quantitative character showed that the variations in female were larger than in male, and the much larger sexual differences were found on body weight, body height and body thickness. Meanwhile, the analysis of standardized character revealed that five characters between male and female popu- lation were significantly different （P 〈 0. 01 ） , including fatness, body length to body height, body length to body thickness, head length to eye diameter and caudal peduncle length to caudal peduncle height. Among these differences, the most divergent character was body length to body thickness. These standardized characters would be useful for the sex discrimination of large yellow croaker.

关 键 词：大黄鱼 形态指标 计量性状 形态差异 

分 类 号：Q174[生物学—水生生物学] S965.322[生物学—普通生物学]