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| 斑石鲷早期发育的异速生长模式 |
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王雨福1,2,3, 肖志忠1,3, 刘清华1,3, 翟介明4, 庞尊方4, 马文辉4, 马道远1,3, 徐世宏1,3, 肖永双1,3, 李 军1,3
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1.中国科学院 海洋研究所实验海洋生物学重点实验室;2.中国科学院大学;3.青岛海洋科学与技术国家实验室 海洋生物学与生物技术功能实验室;4.莱州明波水产有限公司
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| 摘要: |
| 为研究斑石鲷(Oplegnathus punctatus)早期发育阶段的生长规律及重要器官的异速生长模式, 作者运用实验生态学方法, 测定了斑石鲷仔稚幼鱼(0～70日龄)全长和体质量随日龄的变化规律。结果显示, 全长、体质量与日龄的关系均符合Cubic函数, 随日龄的生长曲线表现为S型。斑石鲷全长和体质量的生长可分为3个阶段, 不同阶段的生长率存在显著差异(P<0.05)。斑石鲷的头长、眼径、吻长、口裂、体高、尾鳍长等重要外部形态学指标均存在异速生长规律, 其生长拐点依次为35日龄(全长20.32 mm)、22 日龄(全长13.17 mm)、29日龄(全长16.63 mm)、30日龄(全长15.50 mm)、32日龄(全长19.79 mm)、32日龄(全长19.79 mm)。相对于全长, 头长、吻长、口裂在拐点前后由正异速生长变为等速生长; 眼径、尾鳍由正异速生长转为负异速生长; 而体高在0～70日龄为正异速生长, 但拐点之后已明显变缓。研究表明斑石鲷通过异速生长, 确保与其基本生存能力相关的功能器官优先发育, 以适应复杂多变的生存环境, 并相应地提高了仔稚鱼的存活率, 对鱼苗培育具有重要的指导意义。 |
| 关键词: 斑石鲷(Oplegnathus punctatus) 早期发育 功能器官 异速生长 |
| DOI：10.11759//hykx20141216005 |
| 分类号: |
| 基金项目:山东半岛重要海产品良种生态养殖与高值化产业链示范资助项目(KFJ-EW-STS-060); 山东省科技发展计划资助项目(2014GHY115019);鳌山科技创新计划(No. 2015ASKJ02, 2015ASKJ02-03-03) |
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| Allometric growth pattern during early ontogeny of spotted knifejaw (Oplegnathus punctatus) |
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WANG Yu-fu,XIAO Zhi-zhong,LIU Qing-hua,ZHAI Jie-ming,PANG Zun-fang,MA Wen-hui,MA Dao-yuan,XU Shi-hong,XIAO Yong-shuang,LI Jun
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| Abstract: |
| Early ontogenesis of spotted knifejaw (Oplegnathus punctatus) was investigated using morphology and morphometrics to study the allometric growth pattern. Spotted knifejaw were reared at (24 ± 0.3)℃ from hatching to 70 days post-hatching (d), and total length, body weight, and allometric growth of important organs were determined. Therefore, the increases in the total length and body weight were consistent with the cubic function and displayed an S-curve with three distinct stages. Allometric growth patterns were detected between different organs (head, mouth, eyes, and fins) and total length and featured inflection points. The growth characteristics of the head length (with an inflection point at 35 d), rostrum length (29 d), and mouth width (30 d) changed from positive allometry to isometry around the infection points, whereas eye diameter (22 d) and tail fin length (32 d) changed from positive to negative allometry. Body height (32 d) maintained positive allometric growth during 0–70 d, with a distinctly lower growth rate after the reflection point than that before. These results indicate that the spotted knifejaw develop the most important organs using an allometric strategy primarily to adjust themselves to the surroundings and achieve a higher survival rate. |
| Key words: Spotted knifejaw (Oplegnathus punctatus) early ontogeny functional organs allometry |