preadaptation

简明释义

英[/ˌpriːædæpˈteɪʃən/]美[/ˌpriːædæpˈteɪʃən/]

n. [生物] 预适应

英英释义

单词用法

同义词

反义词

例句

1.Method By using experimental rabbits IR (Ischemia Referpusion) and IP (Ischemia Preadaptation) model, we freely divide rabbits into 7 groups (8 rabbits every group).

方法采用实验性家兔缺血再灌注及缺血预适应模型，随机分成7组，每组8只。

2.Objective To observe the protective effect of ischemic preadaptation on myocardium injury of ischemia reperfusion by adopting the animal model of ischemia reperfusion on myocardium injury rabbits.

目的采用家兔心肌缺血再灌注损伤动物模型，观察缺血预适应对心肌缺血再灌注损伤的心肌保护作用。

3.Results (1)Level of myocardium enzyme with ischemia reperfusion group is significantly different compared to ischemia preadaptation(P<0.01).

结果（1）缺血预适应组心肌酶水平与缺血再灌注组相比差异均极为显著（P<0.01）；

4.Ischemia preadaptation can evidently reduce subcellular structure injury.

缺血预适应可明显改善亚细胞结构损害。

5.Objective To observe the protective effect of ischemic preadaptation on myocardium injury of ischemia reperfusion by adopting the animal model of ischemia reperfusion on myocardium injury rabbits.

目的采用家兔心肌缺血再灌注损伤动物模型，观察缺血预适应对心肌缺血再灌注损伤的心肌保护作用。

6.Certain plants display Preadaptation by developing drought-resistant features before facing arid conditions.

某些植物通过在面临干旱条件之前发展抗旱特征，展示了前适应。

7.The concept of Preadaptation is crucial in understanding how species evolve to survive in new environments.

理解物种如何进化以适应新环境的过程中，前适应的概念至关重要。

8.In evolutionary biology, Preadaptation refers to traits that were useful in one context but later became beneficial in another.

在进化生物学中，前适应是指在一个环境中有用的特征，后来在另一个环境中变得有益。

9.Marine animals often exhibit Preadaptation when they move to freshwater habitats.

当海洋动物迁移到淡水栖息地时，通常会表现出前适应。

10.The study revealed that the bird's beak shape was a result of Preadaptation to its changing diet.

研究表明，这种鸟的喙形状是其饮食变化的前适应结果。

作文

In the realm of evolutionary biology, the concept of preadaptation plays a crucial role in understanding how species evolve and adapt to their environments. preadaptation refers to the process by which an organism possesses traits that were originally suited for one environment but later become advantageous in a different context. This phenomenon highlights the flexibility and resilience of life forms as they navigate changing ecological landscapes.To illustrate the idea of preadaptation, consider the example of the evolution of the vertebrate limb. The ancestors of modern tetrapods lived in aquatic environments, where their fins were primarily used for swimming. However, as some of these species ventured onto land, the same structures that had evolved for swimming became adapted for walking. This transition showcases how traits can be repurposed through preadaptation, allowing organisms to exploit new habitats and resources.The significance of preadaptation extends beyond physical traits; it also encompasses behavioral and physiological adaptations. For instance, certain bird species have beaks that are well-suited for cracking seeds, a trait developed in response to specific environmental pressures. However, when these birds migrate to areas with different food sources, their beaks may still provide an advantage, demonstrating preadaptation in action. This ability to utilize pre-existing traits in novel ways is a testament to the power of evolution and natural selection.Moreover, preadaptation can also be observed in the context of climate change. As global temperatures rise and weather patterns shift, many species must adapt quickly to survive. Those that possess traits that were once beneficial in different climatic conditions may find themselves at an advantage. For example, certain plant species that originally thrived in cooler climates may have traits that allow them to withstand droughts or heat, thereby showcasing preadaptation to the challenges posed by a warming world.The study of preadaptation not only enriches our understanding of evolutionary processes but also has practical implications for conservation efforts. By identifying species that exhibit preadaptation, conservationists can prioritize efforts to protect those organisms that are more likely to thrive in changing environments. This proactive approach is essential in preserving biodiversity and maintaining ecosystem stability in the face of rapid environmental changes.In conclusion, preadaptation is a fascinating concept that reveals the intricate ways in which organisms evolve and adapt over time. It underscores the importance of flexibility in the survival of species and highlights the interconnectedness of life forms within ecosystems. As we continue to study the mechanisms of evolution, understanding preadaptation will be vital in addressing the challenges posed by climate change and habitat loss. By recognizing the potential for pre-existing traits to serve new functions, we can better appreciate the resilience of life on Earth and work towards a more sustainable future for all species.

在进化生物学领域，预适应的概念在理解物种如何进化和适应其环境方面发挥着至关重要的作用。预适应是指一种生物拥有原本适合于某一环境的特征，但后来在不同的环境中变得有利的过程。这一现象突显了生命形式在应对不断变化的生态环境时的灵活性和韧性。为了说明预适应的思想，可以考虑脊椎肢体进化的例子。现代四足动物的祖先生活在水生环境中，他们的鳍主要用于游泳。然而，随着一些物种走向陆地，这些原本用于游泳的结构变成了行走的适应。这一过渡展示了特征如何通过预适应被重新利用，使生物能够利用新的栖息地和资源。预适应的重要性不仅仅限于身体特征；它还包括行为和生理适应。例如，某些鸟类的喙非常适合啄食种子，这一特征是在特定环境压力下发展起来的。然而，当这些鸟类迁移到不同食物来源的地区时，它们的喙仍然可能提供优势，证明了预适应的存在。这种以新方式利用现有特征的能力证明了进化和自然选择的力量。此外，在气候变化的背景下也可以观察到预适应。随着全球气温上升和天气模式变化，许多物种必须快速适应以求生存。那些拥有曾在不同气候条件下有利特征的物种可能会发现自己处于优势。例如，某些原本在寒冷气候中繁荣的植物物种可能具备抵御干旱或高温的特征，从而展示了对温暖世界所带来的挑战的预适应。对预适应的研究不仅丰富了我们对进化过程的理解，还有实际意义，尤其在保护工作中。通过识别表现出预适应的物种，保护主义者可以优先保护那些在不断变化的环境中更有可能生存的生物。这种主动的方法对于保护生物多样性和维持生态系统的稳定性至关重要，尤其是在面对快速环境变化时。总之，预适应是一个引人入胜的概念，揭示了生物如何随着时间的推移而进化和适应的复杂方式。它强调了物种生存中灵活性的重视，并突显了生态系统中生命形式的相互联系。随着我们继续研究进化机制，理解预适应将对应对气候变化和栖息地丧失所带来的挑战至关重要。通过认识到现有特征可以发挥新功能的潜力，我们可以更好地欣赏地球生命的韧性，并为所有物种的可持续未来而努力。