| 东太平洋赤道海域茎柔鱼组织能量积累及其与海表面环境因子的关系 |
| |
| 引用本文： | 韩飞,陈新军,林东明.东太平洋赤道海域茎柔鱼组织能量积累及其与海表面环境因子的关系[J].中国水产科学,2020,27(4):427-437. |
| |
| 作者姓名： | 韩飞 陈新军 林东明 |
| |
| 作者单位： | 1. 上海海洋大学海洋科学学院, 上海 201306;2. 上海海洋大学大洋渔业资源可持续开发省部共建教育部重点实验室, 上海 201306;3. 上海海洋大学国家远洋渔业工程技术研究中心, 上海 201306;4. 上海海洋大学远洋渔业协同创新中心, 上海 201306 |
| |
| 基金项目： | 国家自然科学基金项目（41876144，41876141）；上海市自然科学基金项目（16ZR1415400）. |
| |
| 摘 要： | 头足类生长速度快、寿命短,生长发育对栖息环境波动变化的敏感性高。组织能量积累是衡量生物体内能量储备及其与环境效应的重要指标。为了掌握茎柔鱼(Dosidicus gigas)生长发育及其对栖息环境的适应性,本文利用组织能量密度测定技术和广义可加模型(generalized additive model,GAM)分析方法,对赤道海域茎柔鱼肌肉和性腺组织的能量积累及其与环境因子的效应关系进行了分析研究。结果显示,茎柔鱼雌雄性个体肌肉组织能量积累随个体生长发育显著增加,主要受到地理纬度和海表温的影响。性腺组织能量积累在性腺成熟前后差异性显著,能量积累过程与地理经纬度、海表温和叶绿素浓度等关系密切。以上结果表明,赤道海域茎柔鱼肌肉和性腺组织能量随着生长发育不断积累。两者的能量积累与环境因子关系存在组织特殊性,海表温是肌肉组织能量积累的重要环境效应因子,而性腺组织能量积累同时受到海表温和叶绿素浓度变化的影响。此外,雌性个体性腺组织能量积累随着经度自东向西增加显著,表明这些个体具有显著的离岸索饵育肥洄游习性。
|
| 关 键 词： | 茎柔鱼 能量积累 海表温 叶绿素浓度 生活史策略 |
| 修稿时间： | 2020/4/20 0:00:00 |
Energy accumulation and its relation to sea surface environments in Dosidicus gigas from the equatorial water of the Eastern Pacific |
| |
| HAN Fei,CHEN Xinjun,LIN Dongming.Energy accumulation and its relation to sea surface environments in Dosidicus gigas from the equatorial water of the Eastern Pacific[J].Journal of Fishery Sciences of China,2020,27(4):427-437. |
| |
| Authors: | HAN Fei CHEN Xinjun LIN Dongming |
| |
| Institution: | 1. College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;2. Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education;Shanghai Ocean University, Shanghai 201306, China;3. National Engineering Research Center for Oceanic Fisheries, Shanghai Ocean University, Shanghai 201306, China;4. Collaborative Innovation Center for Distant-water Fisheries, Shanghai Ocean University, Shanghai 201306, China |
| |
| Abstract: | Cephalopod species are well documented for fast growth rate, short life span, and high sensitiveness to their ambient marine environments. Energy accumulation is central to the life history of organisms, indicating their levels of energy reserves and resilience to ongoing environmental changes. In order to enhance our understanding of the adaptability of Dosidicus gigas to its habitats, the energy density determination technique, coupled with the generalized additive model (GAM), was applied to investigate energy accumulation in the somatic and gonad tissues, in relation to oceanographic variables, in Dosidicus gigas from the equatorial water of the eastern Pacific. The results showed that the soma energy of male and female individuals increased significantly with growth and development, and was mainly influenced by geographic latitude and sea surface temperature (SST). Significant differences in the gonadal tissue energy were found between immature and mature animals. The energy accumulated in the gonadal tissue was significantly related to the geographic latitude and longitude, SST, and chlorophyll-a concentration. These lines of evidence indicate that the somatic and gonadal tissues of Dosidicus gigas in the equatorial water of the eastern Pacific continuously accumulate energy during the course of sexual maturation. There was tissue-specific energy accumulation in relation to ambient environments, in which the soma energy was significantly correlated with SST. Not only does SST significantly influence energy accumulation in gonadal tissues, but also chlorophyll-a concentration is an important environmental variable influencing gonadal tissue energy. Also, gonadal energy accumulation in female animals showed an obvious increasing trend with the westward geographic longitudes, indicating that the life history of Dosidicus gigas includes offshore feeding migration. |
| |
| Keywords: | Dosidicus gigas energy accumulation sea surface temperature concentration of chlorophyll a life-history strategy |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国水产科学》浏览原始摘要信息 |
| 点击此处可从《中国水产科学》下载免费的PDF全文 |
|
