Growth-selective survival in piscivorous larvae of Japanese Spanish mackerel Scomberomorus niphonius: early selection and significance of ichthyoplankton prey supply
Growth-selective survival in piscivorous larvae of Japanese Spanish mackerel Scomberomorus niphonius: early selection and significance of ichthyoplankton prey supply
复制标题
日本鲭鱼鱼食性幼虫的生长选择性生存：浮游鱼类猎物供应的早期选择和意义
DOI：
10.3354/meps321245
复制
发表时间：
2006
影响因子：
2.5
通讯作者：
Masaru Tanaka
中科院分区：
文献类型：
--
作者：
J. Shoji;Masaru Tanaka
鲭鱼被认为采用了一种生存策略，其特点是生长速度快，并且能够在幼年时捕食大型猎物。喂养条件的变化早在第一次喂养后阶段就可以显着影响幼虫的生长，并可能控制幼虫早期阶段与生长相关的存活率。通过耳石微观结构分析，证明了日本鲭鱼 Scomberomorus niphonius 首次摄食后幼虫的生长选择性存活，其表现出独特的鱼食性、高生长率和低饥饿耐受性。 1997年至1999年6月和7月在濑户内海反复采集幼鱼和幼鱼。使用耳石微分析反算的生长轨迹对7月捕获的幸存者（SV）和6月捕获的推测原始种群（OP）进行了比较。在第一次喂食后的 5 天内（第 5 至 10 天），对快速生长的幼虫的选择是明显的。超过90%的SV在第5至10天的平均生长率(G 5-10 ) > 0.8 mm d -1 ，而G 5-10 < 0.8 mm d -1 的SV很少能存活下来。三年间的选择强度有所不同。 1999 年，当幼虫群体经历了较高的猎物浓度和 G 5-10 时，观察到了较不强烈的选择。实验室实验表明，1至2天的饥饿会延缓幼虫在接下来的幼虫时期的生长，并支持这样的结论：浮游鱼类猎物丰度的波动通过影响幼虫在第一次摄食后短时间内的生长速率来改变幼虫的存活概率。
Scombrid fishes are considered to have adopted a survival strategy characterized by fast growth and the ability to consume large prey at an early age. Variability in feeding condition can significantly affect larval growth as early as the post first-feeding stage and may control growth-related survival during the early larval stage. Through otolith microstructure analysis, growth-selective survival was demonstrated for post first-feeding larvae of Japanese Spanish mackerel Scomberomorus niphonius, which exhibit exclusive piscivory, a high growth rate, and low tolerance to starvation. Larvae and juveniles were repeatedly collected in the Seto Inland Sea in June and July from 1997 to 1999. Growth trajectory back-calculated using otolith microanalysis was compared between the survivors (SV) captured in July and the presumed original population (OP) captured in June. Selection for fast-growing larvae was evident during the 5 d after first feeding (Days 5 to 10). More than 90% of the SV had a mean growth rate during Days 5 to 10 (G 5-10 ) > 0.8 mm d -1 , and those with G 5-10 < 0.8 mm d -1 rarely survived the period. Intensity of selection differed among 3 years. A less intense selection was observed in 1999 when the larval cohort experienced higher prey concentrations and G 5-10 . Laboratory experiments demonstrated that 1 to 2 d starvation retarded the larval growth during the following larval period, and supported the conclusion that fluctuation in ichthyoplankton prey abundance alters larval survival probability by affecting the larval growth rate within a short period subsequent to first feeding.
对日本鳀鱼幼体的捕食者特异性生长选择性捕食。
DOI：
--
发表时间：
2007
期刊：
Marine Ecology Progress Series 350
影响因子：
--
作者：
Takasuka;A.;Aoki;I.;Oozeki;Y.
通讯作者：
Y.
日本濑户内海中部鲭鱼 (Scomberomorus niphonius) 幼体的生长和死亡率
DOI：
--
发表时间：
2005
期刊：
Journal of the Marine Biological Association of the United Kingdom 85
影响因子：
--
作者：
Okada T;Akada M;Fujita T;Iwata T;Goto Y;Kido K;Okada T;Matsuzaki Y;Kobayashi K;Matsuno S;Sunamura M;Kawakami Y.;Jun Shoji
通讯作者：
Jun Shoji