Spatial and temporal patterns of juvenile stone flounder Kareius bicoloratus growth rates during and after settlement
Spatial and temporal patterns of juvenile stone flounder Kareius bicoloratus growth rates during and after settlement
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幼鱼 Kareius bicoloratus 定居期间和定居后生长速率的时空模式
DOI：
10.3354/meps131049
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发表时间：
1996
影响因子：
2.5
通讯作者：
T. Targett
中科院分区：
文献类型：
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作者：
K. D. Malloy;Y. Yamashita;H. Yamada;T. Targett
生境特征的时空差异沿海托儿所理由可以有一个大~ m p c t增长率生存,和随后的招聘的物种w ~ t h e s图阿r ~不依赖早期生活史阶段石鲽Karelus bicoloratus是北太平洋温带比目鱼物种以大型招聘可变性和estuanne-dependent幼年期苗解决从m ~ d-Janua早期Apnl在近海和estuanne托儿所为由,在沉淀期间（8°C）和沉淀后（12cC）常见的条件下，对幼体石比目鱼生长速率对温度和摄食速率变化的影响进行了实验室研究，研究了RNA - DNA比值与生长速率{+的关系。测定了5种不同生境的石斑鱼幼鱼在定居期间（3月）和定居后（4月）的生长速度。实验室石斑鱼幼鱼在8°C（体重4.1公斤）和12°C（体重0.7公斤）的条件下，以较快的速度摄食和1 ~ 2 ~ 3公斤的速度生长。饥饿幼鱼的生长速率在8 ~ 12°C间无显著差异，平均为- 3 % bw / RN， DNA比值是生长速率的良好因子（R0 881，温度是协变量），在5 s（1个河口1个海草床）的原位生长速率。和3 Apnl的更深层次的近海解决地区)高于3月在sltu增长率两个月期间hlghest低盐度estuanne s t t ~ w h e ~ e鱼有h ~ g h e s t肠道丰满增长率也wele h ~ g h在更深的近海站污水处理排水口附近以更高的猎物丰度比通常在开放水域发现草地仙台湾,日本最低增长率都在植物的栖息地(目前spp床),尽管保留hab ~ ta t 3月和4月之间hlgh空间差异s e d ~ m e n t颗粒slze和猎物丰度可能是主要因素负责大型vanability habltat-specific增长率Temperature-corrected compansons增长l i m ~ t t ~ o n表明d ~ sc再保险t e栖息地maintaln相对价值苗圃场地在曲调虽然增长l lm的大小~界定得多g ~ e t e r durlng结算(3月)石牙鲆（Kareius bicoloratus）生长生境RNA:DNA。招聘
Spatial and temporal differences In habitat characteristics of coastal nursery grounds can have a large ~ m p a c t on growth rate survival, and subsequent recruitment of species w ~ t h e s tua r~ne dependent early life history stages Stone flounder Karelus bicoloratus IS a temperate North Pacific flatfish species characterized by large recruitment variability and an estuanne-dependent juvenile stage Post-larvae settle from m~d-Janua ry to early Apnl In inshore and estuanne nursery grounds, and luveniles subsequently rnove farther inshore using selective t ~ d a l stream transport Laboratory btud~es were conducted to determine the sens i t~v~ ty of juven~le stone flounder growth rates to changes In temperature and feeding rates at conditions common durlng settlement (8°C) and post-settlement (12cC) The relat~onship between RNA DNA ratio and growth rate {+as developed in the laboratory, and was used to measure in sltu growth rates of juven~les from 5 dltferent habltats durinq settlement (March) and after (April) Juvenile stone tlounder in the laboratory g iew reldt~vely quickly feeding ad l ~ b ~ t u m at 8°C (4 1 body xveiqht d l ) and 12°C (7 O", bw d 'I, but growth rate was very sensitive to changes in feeding rate at both temperatures Growth rdte of starved juven~les was not significantly different between 8 and 12°C and averaged -1 3 % bw d ' RN,\ DNA ratios were good pred~ctors of growth rate (R0 881, with temperature as a covariate In situ growth rates at all 5 s ta t~ons ( 1 estuary 1 seagrass bed, and 3 deeper inshore settlement areas) were higher In Apnl than in March In sltu growth rates were hlghest during both months at the low-salinity estuanne s t a t~on w h e ~ e fish had h ~ g h e s t gut fullnesses Growth rates wele also h ~ g h at a deeper inshore station near a sewage treatment outfall characterized by higher prey abundances than those typically found in open water a leas of Sendai Bay, Japan Growth rates were consistently lowest at the vegetated (Zostera spp bed) habitat, although retention In this hab~ ta t between March and April was hlgh Spatial differences In s e d ~ m e n t grain slze and prey abundances may be the primary factors responsible for the large vanability In habltat-specific growth rates Temperature-corrected compansons of growth l i m ~ t a t ~ o n suggest that d~sc re t e habitats maintaln their relative values as nursery grounds over tune although the magnitude of growth l lm~tation was much g ~ e a t e r durlng settlement (March) than post-settlement (Aprll) K E Y WORDS Stone flounder Kareius bicoloratus Growth Habitat RNA:DNA . Recruitment
J.Chem.Soc.，Chem.Commun.(1983)
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