ACTA THERIOLOGICA SINICA ›› 2015, Vol. 35 ›› Issue (4): 389-397.

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Trade-off between growth and reproduction in male offspring of Brandt’s voles from low body mass parents

WANG Tongliang, ZHANG Xueying, FU Rongshu, WANG Dehua   

  1. State Key laboratory of Integrated Management of Pest Insect and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
  • Online:2015-11-13 Published:2015-11-15

 布氏田鼠双亲低体重导致雄性后代生长和繁殖间的权衡

王同亮, 张学英, 付荣恕, 王德华   

  1. 中国科学院动物研究所,农业虫害鼠害综合治理研究国家重点实验室,北京100101
  • 通讯作者: 王德华,Emali:wangdh@ioz.ac.cn
  • 作者简介:王同亮(1987– ),男,硕士研究生,主要从事动物生理生态学研究
  • 基金资助:
    国家自然科学基金项目(31270010和31272312)

Abstract: The perinatal period is critical for phenotypic plasticity in animals. Numerous physiological and environmental factors could chronically modify animals’ growth and metabolic phenotype. Parental effects are a major driver of phenotypic plasticity. The present study was designed to explore the effects of parental body-mass on offspring growth, body-mass and energy metabolism in Brandt's voles (Lasiopodomys brandtii). The offspring (litter sizes from 6 to 8) from high body-mass parents (female, 51.5 ± 1.6 g; male, 60.4 ± 2.5 g) were defined as parental high group (HBM), and those from low body-mass parents (female, 35.5 g ± 1.2 g; male, 49.6 g± 2.8 g) as parental low group (LBM). Body mass and energy intake from age of 4 weeks to 13 weeks, resting metabolic rate (RMR), nonshivering thermogenesis (NST), glucose tolerance, body composition, organ mass, and serum leptin concentration in the adults were recorded. Our results showed that:1)gross energy intake and digestible energy intake of offspring in the LBM group were significantly higher than those of the HBM group. The wet and dry masses of testes in the LBM group were significantly lower than those of the HBM group.2) RMR in the LBM group was significantly higher than that of the HBM group in male offspring. 3)No significant differences in body-mass, NST, serum leptin, and glucose tolerance were detected between these two groups. These results suggest that low parental body-mass resulted in the trade-off between growth and reproduction in male offspring, indicative of the increases in RMR and energy intake but the depression of reproductive organs.

Key words: Brandt’s voles (Lasiopodomys , brandtii) Metabolic phenotype, Offspring, Parental body-mass, Reproduction

摘要: 动物出生前后阶段是发育可塑性的关键时期,众多生理或环境因素可长期改变个体的生长发育和代谢表型。双亲效应是造成后代表型差异的重要原因。为研究双亲体重对后代断乳后的生长发育及成年期体重和能量代谢的影响,选取了体重差异显著的布氏田鼠,分别雌雄配对,形成高体重双亲组后代(雌性,51.5 ± 1.6 g;雄性,60.4 ± 2.5 g; Parental high body mass, HBM)和低体重双亲组后代(雌性,35.5 ± 1.2 g;雄性,49.6 ± 2.8 g ;Parental low body mass, LBM)。检测了后代(胎仔数为6 – 8)4 – 13周龄的体重;能量摄入(摄入能、消化能和消化率);12周龄时静止代谢率、非颤抖性产热、葡萄糖耐受;13周龄的血清瘦素水平及身体组织器官重等。发现:(1)低体重双亲组后代发育过程中的摄入能和消化能均显著高于高体重双亲组,雄性后代睾丸湿重和干重显著降低。(2)在雄性后代,双亲低体重导致静止代谢率显著升高,但雌性后代组间差异不显著。(3)成年(12周龄)时的体重、非颤抖性产热、血清瘦素和葡萄糖耐受在高、低体重双亲组间无显著差异。结果表明:双亲低体重导致后代发育过程中将更多的能量用于生长,雄性后代繁殖器官的发育明显受到抑制,表现出生长和繁殖间的权衡。

关键词: 布氏田鼠, 双亲体重, 后代, 代谢表型, 繁殖发育