The influence of temperature during early life on phenotypic expression at later ontogenetic stages in sea bass
The influence of temperature during early life on phenotypic expression at later ontogenetic stages in sea bass
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DOI：
10.1111/j.1095-8649.2007.01305.x
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发表时间：
2007-01-01
影响因子：
2
通讯作者：
Koumoundouros, G.
中科院分区：
文献类型：
--
作者：
Georgakopoulou, E.;Sfakianakis, D. G.;Koumoundouros, G.
为了检验鱼类在早期发育阶段所经历的温度是否会影响其在随后阶段的表型，所使用的模式物种，欧洲海鲈鱼Dicentrarchus labrax在半外包阶段期间经受15或20摄氏度的水温，直到变态。热处理结束后，在三个不同的阶段，分生组织和形态特征进行了探讨。环境温度对个体形态和大部分分生性状有显著影响。在15摄氏度时鱼的体型比在20摄氏度时更细长。背棘和软条、胸毛和尾毛受到显著影响。表型差异，由于这两个热制度的功能意义方面进行了讨论，在过渡期间从南极到沿岸的生态位。
To exam whether the temperature experienced by fishes at early developmental stages can influence their phenotype at subsequent stages, the model species used, European sea bass Dicentrarchus labrax was subjected to water temperatures of 15 or 20 degrees C during the half-epiboly stage until the metamorphosis. Meristic and morphometric characters at three different stages, well after the end of the thermal treatments, were explored. Body shape and most of the meristic characters were significantly affected by the environmental temperature during their early life stages. Fish body shape at 15 degrees C tended to be more slender than at 20 degrees C. The dorsal spines and soft rays, the pectoral lepidotrichia and caudal dermatotrichia were significantly affected. Phenotypic differences due to the two thermal regimes are discussed in terms of their functional meaning during the transition from the planktonic to the littoral niche.