Examination a hypothesis "growth rate-dependent recruitment" using an archives of sardine otolith

使用沙丁鱼耳石档案检验“生长率依赖性招募”假设

• 批准号: 22780185
• 负责人: TAKAHASHI Motomitsu
• 金额: $ 2.5万
• 依托单位: Fisheries Research Agency
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22780185/
• 关键词: カリフォルニア海流域; 湧昇; マイワシ; カタクチイワシ; 資源量変動; 成長速度; 耳石; 仔稚魚; 加入量; カリフォルニア海流

Growth rate during the early life stages of Pacific sardine Sardinops sagax during 1980-2000s was examined based on widths of otolith growth increments as a proxy of daily somatic growth rate in relation to abundance of recruits and environmental factors. Growth rate during the early juvenile stage(60-90 days after hatching) positively correlated with abundance of recruits and sea surface temperature in summer. Previous studies on Japanese sardine S. melanostictus have demonstrated that abundance of recruits is a positive function of growth rate during the early juvenile stage, which is the growth rate-dependent recruitment hypothesis. The results in this study show that the same hypothesis could be applicable for S. sagax and suggest that increase in temperature during the early juvenile stage enhanced growth and survival rates and consequently increased recruitment of S. sagax in the 1990s.

在1980 - 2000年代，太平洋沙丁鱼沙丁鱼SADINOPS SAGAX的早期生命阶段的增长率是根据耳石生长增量增量的宽度检查的，作为与丰富的招募和环境因素有关的每日体细胞增长率的代表。少年早期（孵化后60-90天）的生长速率与夏季的丰度和海面温度呈正相关。先前对日本沙丁鱼链球菌的研究表明，丰富的新兵是少年阶段早期增长率的积极功能，这是增长率依赖性招募假说。这项研究的结果表明，相同的假设可能适用于S. sagax，并表明少年早期的温度升高会提高生长和存活率，因此在1990年代增加了S. Sagax的募集。

项目成果

Abundance and growth rate during early life stages of Pacific sardine Sardinos sagax in the California Current system

加利福尼亚洋流系统中太平洋沙丁鱼 Sardinos sagax 早期生命阶段的丰度和生长率

• 发表时间: 2010
• 作者: Motomitsu Takahashi;David M. Checkley Jr
• 通讯作者: David M. Checkley Jr

Abundance and growth rate during early life stages of Pacific sardine Sardinops sagax in the California Current system

加利福尼亚洋流系统中太平洋沙丁鱼 Sardinops sagax 早期生命阶段的丰度和生长率

• 发表时间: 2010
• 作者: Motomitsu Takahashi;David M.Checkley Jr.
• 通讯作者: David M.Checkley Jr.

Responses in growth rate of larval northern anchovy to anomalous upwelling in the northern California Current

北鳀鱼幼体生长率对北加州海流异常上升流的响应

• 期刊: Fisheries Oceanography
• 影响因子: 2.6
• 作者: Motomitsu Takahashi;David M. Checkley Jr.;Marisa N. C. Litz;Richard D. Brodeur;Williams T. Peterson
• 通讯作者: Williams T. Peterson