| 南海鸢乌贼中型群雄性个体肌肉和性腺组织能量积累及其分配 |
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| 引用本文： | 朱凯,张立川,陈新军,姚吉祥,韩飞,林东明.南海鸢乌贼中型群雄性个体肌肉和性腺组织能量积累及其分配[J].热带海洋学报,2019,38(4):41-51. |
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| 作者姓名： | 朱凯 张立川 陈新军 姚吉祥 韩飞 林东明 |
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| 作者单位： | 1. 上海海洋大学海洋科学学院, 上海 201306;2. 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. 国家远洋渔业工程技术研究中心, 上海 201306;4. 远洋渔业协同创新中心, 上海 201306 |
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| 基金项目： | 国家自然科学基金((NSFC41276156););国家“八六三”高技术研究发展计划((2012AA092303););上海市自然科学基金((16ZR1415400););上海海洋大学大学生创新活动计划项目((B1-5002-17-0001-2).) |
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| 摘 要： | 利用组织能量密度测定技术和残差指标分析方法, 分析了南海鸢乌贼中型群雄性个体肌肉组织和性腺组织的能量积累及其分配变化过程。结果显示, 胴体、尾鳍、足腕、精荚复合体、精巢等组织的能量密度值分别为21.16±1.44、21.98±1.51、21.44±1.50、20.83±1.70和21.41±1.70kJ?g -1。胴体和精荚复合体两组织的能量密度在不同性腺成熟度之间均存在显著性差异, 而尾鳍、足腕、精巢等3种组织的能量密度则在不同性腺成熟度之间均没有统计学差异。个体总能量积累为299.31±90.81kJ; 随着个体生长, 总能量积累呈现增加的趋势。胴体、足腕和尾鳍等肌肉组织的能量占比为95.31%~98.04%, 随着性腺发育呈现降低的趋势; 精巢和精荚复合体等性腺组织的能量总投入占比为2.63%~5.33%, 随着性腺发育呈增加的趋势, 并在Ⅴ期达到最大值。同时, 残差指标分析显示, 胴体、尾鳍、足腕等肌肉组织能量积累-胴长残差与性腺组织能量积累-胴长残差呈显著的正相关关系, 表明个体性腺发育过程中肌肉组织能量没有转化用于性腺组织的生长发育, 其生殖能量投入倾向于外源性投入。初步掌握了南海鸢乌贼中型群雄性个体肌肉和性腺组织能量的积累变化过程, 为深入了解它们的繁殖策略和为可持续开发利用该种类资源提供了科学基础。
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| 关 键 词： | 鸢乌贼 雄性个体 繁殖策略 能量投入 中国南海 |
| 收稿时间： | 2018-10-01 |
| 修稿时间： | 2019-02-22 |
Energy accumulation and allocation of somatic and reproductive tissues in medium form of male Sthenoteuthisoualaniensis in the South China Sea |
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| Kai ZHU,Lichuan ZHANG,Xinjun CHEN,Jixiang YAO,Fei HAN,Dongming LIN.Energy accumulation and allocation of somatic and reproductive tissues in medium form of male Sthenoteuthisoualaniensis in the South China Sea[J].Journal of Tropical Oceanography,2019,38(4):41-51. |
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| Authors: | Kai ZHU Lichuan ZHANG Xinjun CHEN Jixiang YAO Fei HAN Dongming LIN |
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| Institution: | 1. College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;2. Key Laboratory of Sustainable Exploitation of Oceanic Fishery Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306, China;3. National Distant-water Fisheries Engineering Research Center, Shanghai Ocean University, Shanghai 201306, China;4. Collaborative Innovation Center for Distant-water Fisheries, Shanghai 201306, China |
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| Abstract: | The energy accumulation and allocation of somatic and reproductive tissues in the medium form of male Sthenoteuthisoualaniensiswere were analyzed by using the technology of energy density determination combined with residual analysis. The results showed that the energy density of mantle, fins, arms, spermatophoric complex, and testis were 21.16±1.44, 21.98±1.51, 21.44±1.50, 20.83±1.70, and 21.41±1.70kJ·g -1, respectively. The energy density for tissue of mantle or spermatophoric complex varied significantly depending on sexual maturity stages, while there were no significant differences between sexual maturity stages for the tissue of fins, arms, or testis. The total energy accumulation for each individual was estimated at 299.31±90.81 kJ, and showed an increasing trend with body size growth. With regards to relative energy accumulation, the somatic tissues, including mantle, fins and arms, accounted for 95.31%~98.04% of the total energy accumulation, but decreased with maturation. The relative energy accumulation in reproductive tissues, being testis and spermatophoric complex, accounted for 1.96%~4.96% of the total energy accumulation, and increased with maturation, in which the maximum value was reached at stage V. The analysis of residuals of relationship between tissue absolute energy accumulation and mantle length, using Model II regression, showed a significantly positive correlation between somatic and gonadal tissues. This evidence suggests that there was no energy remobilization of somatic tissues to fuel reproduction during sexual maturation, and the mode of reproductive investment is more likely to be income breeding in the medium form of male S.oualaniensis. In this study, we preliminary established the progress of energy accumulation and its allocation in soma and reproductive organs for medium form of male S.oualaniensisin the South China Sea. These findings should assist future research on its reproductive strategy, as well as sustainable utilizationof this kind of resource in the area. |
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| Keywords: | Sthenoteuthisoualaniensis male reproductive strategy energy investment South China Sea |
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