苏程程(1996–),女,硕士研究生,研究方向为渔业资源生态学.E-mail:13335088169@163.com
S931
国家重点研发计划项目(2017YFE0104400)； 山东省支持青岛海洋科学与技术试点国家实验室重大科技专项(2018SDKJ0501-1)； 山东省泰山学者工程资助项目； 中国水产科学研究院基本科研业务费专项(2020TD01).
SU Chengcheng
Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences ， National Field Observation and Research Center for Changdao Marine Ecosystem ， Shandong Provincial Key Laboratory of Fishery Resources and EcoEnvironment, Qingdao 266071 , China ；College of Marine Sciences, Shanghai Ocean University, Shanghai 201306 , ChinaSHAN Xiujuan
Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences ， National Field Observation and Research Center for Changdao Marine Ecosystem ， Shandong Provincial Key Laboratory of Fishery Resources and EcoEnvironment, Qingdao 266071 , China ；Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071 , ChinaSHAO Changwei
Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences ， National Field Observation and Research Center for Changdao Marine Ecosystem ， Shandong Provincial Key Laboratory of Fishery Resources and EcoEnvironment, Qingdao 266071 , China ；Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071 , China以海洋模式物种—海水青鳉(Oryzias melastigma)为研究对象, 设置了 90%大个体捕捞(H-B)、90%随机捕捞 (H-R)、75%大个体捕捞(M-B)、75%随机捕捞(M-R)、50%大个体捕捞(L-B)、50%随机捕捞(L-R)、75%小个体捕捞 (M-S) 7 种捕捞策略处理组, 用以研究海水青鳉的生长特征在不同捕捞策略、不同世代(F1、F2 和 F3)之间的差异。 结果表明, 同代际不同捕捞策略条件下, 海水青鳉卵径和仔鱼全长呈极显著性差异(P＜0.01); 不同代际间, 高强度捕捞处理组(90%捕捞策略) 卵径增大, 低强度捕捞处理组(50%捕捞策略)卵径变小, 但不同世代对下一代鱼卵的孵化率和存活率影响较小。不同代际间, 低强度捕捞处理组在幼鱼时期增长率高于其余处理组; 同代际间仔鱼发育阶段, 高强度捕捞处理组生长迅速, 前期增长率明显高于后期, 其在仔幼鱼阶段其增长率低。随着外界捕捞压力的增加, 同代际间高强度捕捞处理组瞬时增长率最低; 低强度大个体捕捞策略组瞬时增长率在代际间较稳定。与现阶段捕捞策略相同, 高强度大个体捕捞会导致鱼类生物学性状在 3 代中产生极大差异。因此本研究通过模拟不同捕捞策略探讨鱼类发生的生物学性状变化, 旨在为预测鱼类进化趋势的深入研究提供依据。
Different fishing strategies have different effects on adaptive changes in the morphological characteristics of fish species. To evaluate the impact of different fishing strategies on the growth characteristics of fish, the marine medaka (Oryzias melastigma) was used as the model organism. Seven fishing strategies were used: 90% large individual fishing (high-intensity large individual fishing, H-B), 90% random fishing (high-intensity random fishing, M-R), 75% large individual fishing (middle-intensity large individual fishing, H-B), 75% random fishing (middle-intensity random fishing, M-R), 50% large individual fishing (low-intensity large individual fishing, L-B), 50% random fishing (low-intensity random fishing, L-R), and 75% small individual fishing (middle-intensity small individual fishing, M-S). The growth characteristics of O. melastigma in the F1–F3 generations were determined. The egg diameter and larval length of O. melastigma were significantly different under the different fishing strategies in the same generation (P＜0.01). Among different generations, the egg diameter increased in the high- intensity fishing treatment group (90% fishing strategy condition) and decreased in the low intensity fishing treatment group (50% fishing strategy condition). However, different generations had little effect on the hatchability and survival rate of the next generation of eggs. The growth rate of the low-intensity fishing treatment group was higher than that of the other treatment groups in the juvenile stage among different generations. During the intergenerational larval development stage, the growth rate of the high-intensity fishing treatment group increased rapidly. This growth rate was significantly higher in the early stage than in the late stage. However, the growth rate of the high-intensity fishing treatment group was lower in the larval and juvenile stages. With the increase in external fishing pressure, the instantaneous growth rate of the high-intensity fishing treatment group was the lowest among the same generation. The instantaneous growth rates of the low-intensity and large individual fishing strategy groups were stable among generations. Similar to the current fishing strategy, high intensity and large individual fishing will lead to great differences in the biological characteristics of fish in three generations. Therefore, for the sustainable utilization of fishery resources and to predict the development trend of fish evolution, it is imperative to study the changes in biological traits of fish caused by fish-induced evolution by simulating the different fishing strategies.
苏程程,单秀娟,邵长伟.不同捕捞策略对海水青鳉不同发育阶段生长的影响[J].中国水产科学,2021,28(12):1576-1587
SU Chengcheng, SHAN Xiujuan, SHAO Changwei. Growth of Oryzias melastigma with different fishing strategies[J]. Journal of Fishery Sciences of China,2021,28(12):1576-1587
