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首页> 外文期刊>ICES Journal of Marine Science >Energy demand during exponential growth of Octopus maya: exploring the effect of age and weight
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Energy demand during exponential growth of Octopus maya: exploring the effect of age and weight

机译：章鱼玛雅指数生长期间的能量需求：探索年龄和体重的影响

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摘要

Recent work has reported changes associated with physiological, morphological, and behavioural adaptation during the absorption of yolk reserves. The holobenthic endemic species Octopus maya was used to explore the energy supply needed from the food intake (I; J animal~(-1) d~(-1)) to supply the rate of production energy needed for body mass (P; J animal~(-1) d~(-1)) and respiration rate (R; J animal~(-1) d~(-1)) as a function of weight and age during the exponential early growth phase of the animal. Individually housed juveniles from hatching (1 d) to 105 d after hatching (DAH) were used, with the age and weight known, and the relationship between oxygen consumption (VO_2; mgO_2 animal~(-1) d~(-1)) and weight (g) was established. Projections of I, R, and P as a function of age (Z) were made. The food intake destined to supply body mass production (%P/I) and respiration rate energy (%R/I) was analysed for an extended age range of 1-150 DAH. When O. maya juveniles hatched, they had a greater requirement for R than for P from the food intake, 61% (%R/I) and 13% (%P/I), respectively, suggesting high metabolic cost associated with post-hatching (during yolk absorption). Within the period where Z_R > Z_P (1 -105 DAH), there was sufficient metabolic energy to satisfy the demands for sustaining exponential body mass production. The age at which %R/I = %P/I delimits the point where P cannot increase for reasons of metabolic constraint.
机译：最近的工作报道了在吸收卵黄储备期间与生理，形态和行为适应有关的变化。整体性流行物种章鱼玛雅被用来探索食物摄入所需的能量供应（I； J动物〜（-1）d〜（-1）），以提供体重所需的生产能量的比率（P； J动物的指数早期生长阶段，呼吸和呼吸速率（R; J动物〜（-1）d〜（-1））与体重和年龄有关。使用孵化后（DAH）从孵化（1 d）到孵化后105 d的个体饲养的幼体，已知年龄和体重，以及耗氧量之间的关系（VO_2; mgO_2动物〜（-1）d〜（-1）并确定重量（g）。根据年龄（Z）进行I，R和P的投影。在1-150 DAH的扩展年龄范围内，分析了用于补充人体大量食物（％P / I）和呼吸速率能量（％R / I）的食物摄入量。当O. maya幼鱼孵化时，他们对R的需求比从食物摄入中获得的P更高，分别为61％（％R / I）和13％（％P / I），这表明与后期食用相关的高代谢成本孵化（卵黄吸收期间）。在Z_R> Z_P（1 -105 DAH）的时间段内，有足够的代谢能满足维持指数体重生产的需求。 ％R / I =％P / I的年龄限制了P出于代谢限制而无法增加的点。

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  • 来源
    《ICES Journal of Marine Science》 |2010年第7期|P.1501-1508|共8页
  • 作者

    Felipe Briceno; Maite Mascaro; Carlos Rosas;

  • 作者单位

    Posgrado de Ciencias del Mar y Limnologia, Universidad Nacional Autonoma de Mexico, Puerto de abrigo s Sisal, Yucatan, Mexico;

    Unidad Multidisciplinaria de Docencia e Investigation (UMDI), Facultad de Ciencias, Universidad Nacional Autonoma de Mexico, Puerto de abrigo s Sisal, 97355 Yucatan, Mexico;

    rnUnidad Multidisciplinaria de Docencia e Investigation (UMDI), Facultad de Ciencias, Universidad Nacional Autonoma de Mexico, Puerto de abrigo s Sisal, 97355 Yucatan, Mexico;

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  • 正文语种 eng
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  • 关键词

    assimilated energy; exponential growth phase; octopus maya; partial energy balance; post-hatching juvenile;

    机译：吸收的能量指数生长期;章鱼玛雅部分能量平衡;孵化后的少年;

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