Inheritance of vertebral number in the three-spined stickleback (Gasterosteus aculeatus).
Inheritance of vertebral number in the three-spined stickleback (Gasterosteus aculeatus).
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DOI：
10.1371/journal.pone.0019579
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发表时间：
2011
期刊：
影响因子：
3.7
通讯作者：
Merilä J
中科院分区：
文献类型：
--
作者：
Alho JS;Leinonen T;Merilä J
脊椎骨数量的种内变异在分类学上是普遍存在的，已知遗传和环境因素都有助于这种变异。然而，遗传与环境影响的相对重要性，在椎骨数量的变化很少被调查的研究设计，最大限度地减少由于非加性遗传和母体影响的偏差。我们使用了父系半同胞设计和动物模型分析，以估计遗传力和因果分量的方差在脊椎数目在三刺刺鱼（Gasterosteus aculeatus）。我们发现，椎骨的数量（h2 = 0.36）和身体大小（h2 = 0.42）是中度遗传，而母亲的影响估计是可以忽略不计的。 虽然椎骨数量对身体大小有积极影响，但没有证据表明身体大小和椎骨数量之间存在遗传相关性。然而，这两个性状之间存在显著的正环境相关。我们的研究结果支持的普遍性，根据从鱼类，爬行动物和哺乳动物的椎骨数量的遗传估计的审查结果，椎骨的数量似乎是中度到高度遗传在一系列广泛的物种。在三棘鱼的情况下，身体大小和椎骨数量的独立进化应该是可能的，因为这两个特征之间的遗传相关性很低。
Intraspecific variation in the number of vertebrae is taxonomically widespread, and both genetic and environmental factors are known to contribute to this variation. However, the relative importance of genetic versus environmental influences on variation in vertebral number has seldom been investigated with study designs that minimize bias due to non-additive genetic and maternal influences. We used a paternal half-sib design and animal model analysis to estimate heritability and causal components of variance in vertebral number in three-spined sticklebacks (Gasterosteus aculeatus). We found that both the number of vertebrae (h2 = 0.36) and body size (h2 = 0.42) were moderately heritable, whereas the influence of maternal effects was estimated to be negligible. While the number of vertebrae had a positive effect on body size, no evidence for a genetic correlation between body size and vertebral number was detected. However, there was a significant positive environmental correlation between these two traits. Our results support the generalization-in accordance with results from a review of heritability estimates for vertebral number in fish, reptiles and mammals-that the number of vertebrae appears to be moderately to highly heritable in a wide array of species. In the case of the three-spined stickleback, independent evolution of body size and number of vertebrae should be possible given the low genetic correlation between the two traits.
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影响因子：
3.8
作者：
HAGEN, DW
通讯作者：
HAGEN, DW
影响因子：
1.9
作者：
Ando, Daisei;Mano, Shu-ichi;Nakajima, Masamichi
通讯作者：
Nakajima, Masamichi
影响因子：
2.6
作者：
Borchers, N;Reinsch, N;Kalm, E
通讯作者：
Kalm, E
影响因子：
3.3
作者：
BERGE, S
通讯作者：
BERGE, S
DOI：
10.1139/z74-128
发表时间：
1974-01-01
期刊：
CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE
影响因子：
--
作者：
ALI, MY;LINDSEY, CC
通讯作者：
LINDSEY, CC