Verification of the turbulence and light-intensity hypotheses on larval survival of flathead flounder

在北海道丰卡湾，生长较快的平头金鱼幼体在摄食初期存活率高于队列内生长较慢的幼虫。经历温暖水温条件的2007级幼虫在2007-2011年龄段生长最快。与预期相反，幼虫期生长最慢的2008年级在成熟期表现较强。摄食初期的生长速度与风速呈弱相关关系，但与水温、太阳总辐射或以无节幼体为主要猎物的桡足类幼体密度无关。初始喂养阶段的匹配-不匹配假说和生长-死亡假说有一定程度的正确性，但不足以解释招募过程中出现的变异性。后期的生存状况可能决定招聘的成败。

Faster-growing larvae of flathead founder Hippoglossoides dubius in the initial feeding stage showed higher survival rate than slower-growing ones within cohort in Funka Bay, Hokkaido. The larvae of 2007 year-class that experienced warm-water-temperature condition showed the fastest growth in 2007-2011 year-classes. Contrary to expectations, the 2008 year-class that showed slowest-growing in larval stage became a strong year class in mature stage. Growth rate in the initial feeding stage was weakly correlated with wind speed as a turbulence indicator however did not with water temperature, global solar radiation, or density of copepod nauplii as principal prey for flathead founder larvae. Match-mismatch and growth-mortality hypotheses in initial feeding stage have some degree of validity but are insufficient to explain the variability seen in recruitment. The survival in later stage may determine the recruitment success.