中国海洋大学学报（自然科学版）2025，Vol.55Issue(3)：125-132,8.DOI:10.16441/j.cnki.hdxb.20240082
卵形鲳鲹幼鱼期肌肉生长发育规律探究
Investigation of the Muscle Growth Patterns in Juvenile Golden Pompano Trachinotus ovatus
摘要
Abstract
The regulatory mechanisms of muscle growth in fish vary depending on the species,with large fish achieving indefinite growth through hyperplasia and hypertrophy of muscle fibers.The re-search on muscle growth in Trachinotus ovatus,a fast-growing large economic fish species,is still in-sufficient.In order to explore it's developmental pattern of muscle growth,this study conducted histo-logical observations of muscle tissues in juvenile T.ovatus using paraffin sectioning and HE staining methods,and statistically analyzed the characteristics of muscle fibers,including fiber number,diame-ter,and area.The results showed that under the conditions of 25～28 ℃,the body length of juvenile T.ovatus increased from(0.78±0.17)cm to(2.98±0.25)cm(P＜0.000 1)between 20～50 days post fertilization;body width increased from(0.26±0.05)cm to(1.04±0.08)cm(P＜0.000 1);body mass increased from 0.015 g to(0.53±0.10)g(P＜0.000 1);particularly,a rapid growth peri-od was observed between 30～40 d.The statistical results of muscle fibers at various stages of juvenile T.ovatus indicated a significant increase in fiber number and diameter,as well as enlargement of fiber area,suggesting that hypertrophy is the main mode of muscle growth in juvenile T.ovatus,accompa-nied by hyperplasia.It is noteworthy that the number of muscle fibers and total fiber area in the fast growth group of T.ovatus were significantly greater than those in the slow growth group during the same period,indicating that both hyperplasia and hypertrophy of muscle fibers contribute to the differ-ences in muscle growth among juvenile fish during the same period.These findings not only deepen our understanding of the muscle growth mechanism of large economic fish,but also have potential applica-tion value and theoretical basis for improving muscle yield.关键词
卵形鲳鲹/幼鱼/肌肉生长/肌纤维增生/肌纤维肥大Key words
Trachinotus ovatus/juvenile/muscle growth/muscle fibre hyperplasia/muscle fibre hy-pertrophy分类
农业科技引用本文复制引用
孙丽莹,刘晓彤,孙敏敏,王娜,齐洁,贺艳..卵形鲳鲹幼鱼期肌肉生长发育规律探究[J].中国海洋大学学报（自然科学版）,2025,55(3):125-132,8.基金项目
国家重点研究发展计划项目(2022YFD2400505)资助Supported by the National Key Research and Development Program of China(2022YFD2400505) （2022YFD2400505）
