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首页> 外文期刊>Cell and Tissue Research >Early thermal history significantly affects the seasonal hyperplastic process occurring in the myotomal white muscle of Dicentrarchus labrax juveniles
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Early thermal history significantly affects the seasonal hyperplastic process occurring in the myotomal white muscle of Dicentrarchus labrax juveniles

机译：早期的热病史显着影响了Dicentrarchus labrax幼体的肌膜白肌中发生的季节性增生过程

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摘要

The effect of early (embryonic and larval) thermal history on subsequent (juvenile) white muscle hyperplasia was studied in a teleost fish, the European sea bass (Dicentrarchus labrax L.). D. labrax, incubated and reared at constant temperatures of 13°C, 15°C or 20°C from the embryonic stage of half epiboly up to 18–19 mm in total length, were transferred to ambient seawater temperature and reared for the subsequent 14 months on commercial feed. The somatic growth of juveniles was linked to annual variations of ambient seawater temperature and inversely related to early rearing temperature, so that, after 14 months, the juveniles originally reared at low temperatures had compensated for the growth retardation experienced during early life. The white muscle growth process of juveniles was quantified after two periods of growth opportunity at ambient seawater temperature (100 and 400 days post-transfer) as well as, in order to follow total-length-dependent effects of early temperature and to discriminate total-length-independent effects of early temperature, on juveniles from the three batches sampled at six successive equivalent total lengths (31–33, 84–88, 141–145, 166–172, 196–206 and 211–220 mm). Our data demonstrate the existence of a seasonal recruitment of new white muscle fibres when seawater temperature increases and of a shrinkage of the largest white muscle fibres during the winter months. The seasonal recruitment of new white muscle fibres occurring in juveniles is linked to their early rearing temperature. Juveniles originating from low temperatures have a higher and longer capacity to recruit new white muscle fibres when seawater temperature increases, supporting their better somatic growth. This finding is discussed in relation to the early (embryonic and larval) myogenic processes of the three populations and is related to their sex ratio.
机译：在欧洲硬鲈鱼（欧洲鲈鱼（Dicentrarchus labrax L.））中研究了早期（胚胎和幼虫）热史对随后（少年）白肌增生的影响。 D. labrax，从半表皮的胚胎阶段开始，在总温度为18–19 mm的温度下，在13°C，15°C或20°C的恒温下孵育并饲养，转移至环境海水温度，并进行随后的饲养用商业饲料喂养14个月。幼鱼的体细胞生长与周围海水温度的年变化有关，并且与早期饲养温度成反比，因此，在14个月后，最初在低温下饲养的幼鱼可以补偿生命早期的生长迟缓。在环境海水温度下（转移后100天和400天）有两个阶段的生长机会后，对少年的白肌肉生长过程进行了量化，以追踪早期温度的总长度依赖性效应并区分总的早期温度对长度的独立性影响，以六个连续的等效总长度（31-33、84-88、141-145、166-172、196-206和211-220 mm）对三批幼鱼进行了抽样。我们的数据表明，当海水温度升高时，存在着新的白肌纤维的季节性募集，而在冬季月份中，最大的白肌纤维会萎缩。少年中出现的新白肌纤维的季节性募集与其早期饲养温度有关。当海水温度升高时，源自低温的幼鱼具有越来越高的能力吸收新的白肌纤维，从而支持其更好的体细胞生长。讨论了与三个种群的早期（胚胎和幼虫）成肌过程有关的发现，并且与他们的性别比有关。

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  • 来源
    《Cell and Tissue Research》 |2007年第3期|553-570|共18页
  • 作者

    Hélène Alami-Durante; Nellie Olive; Michèle Rouel;

  • 作者单位

    Nutrition Aquaculture and Genomic Research Unit National Institute for Agronomic Research Pôle d’Hydrobiologie 64310 Saint Pée-sur-Nivelle France;

    Nutrition Aquaculture and Genomic Research Unit National Institute for Agronomic Research Pôle d’Hydrobiologie 64310 Saint Pée-sur-Nivelle France;

    Nutrition Aquaculture and Genomic Research Unit National Institute for Agronomic Research Pôle d’Hydrobiologie 64310 Saint Pée-sur-Nivelle France;

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  • 正文语种 eng
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  • 关键词

    Muscle; Hyperplasia; Hypertrophy; Temperature; Dicentrarchus labrax (Teleostei);

    机译：肌肉;增生;肥厚;温度;腹足木（Teleostei）;

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