allopatric

简明释义

英[ˌæləˈpætrɪk]美[ˌæləˈpætrɪk]

adj. 在不同地区发生的；[生态] 分布区不重叠的

英英释义

单词用法

同义词

反义词

例句

1.Across geographic gradients, Levins expects allopatric RACES or coenospecies exist.

穿过地理梯度，莱文斯预料有分布区不重叠的小种或近群种。

2.This division set the stage for allopatric speciation among populations of fishes and other marine species.

这种划分为鱼类和其他海洋物种的分区物种形成奠定了基础。

3.The allopatric coral fossils are collected in the olistostromes of the Upper Triassic Zhuwo Formation in Mandi, Zamtang, and two biozones of Triassic bivalves are established.

首次于壤塘县曼迪乡上三叠统侏倭组的滑塌堆积层中，采获异地埋葬珊瑚群化石，建立三叠纪双壳类两个生物带；

4.The allopatric coral fossils are collected in the olistostromes of the Upper Triassic Zhuwo Formation in Mandi, Zamtang, and two biozones of Triassic bivalves are established.

首次于壤塘县曼迪乡上三叠统侏倭组的滑塌堆积层中，采获异地埋葬珊瑚群化石，建立三叠纪双壳类两个生物带；

5.Formenkreis a group of related allopatric species or subspecies.

多型种一群相关的异地种或亚种。

6.The allopatric 异域的 speciation of these frogs occurred after a mountain range formed.

这些青蛙的异域的物种形成发生在一座山脉形成之后。

7.The two species of birds evolved in allopatric 异域的 environments, leading to distinct behaviors.

这两种鸟类在异域的环境中进化，导致了不同的行为。

8.The concept of allopatric 异域的 speciation helps explain biodiversity in isolated ecosystems.

异域的物种形成概念有助于解释孤立生态系统中的生物多样性。

9.Researchers found that allopatric 异域的 populations often exhibit greater genetic divergence.

研究人员发现，异域的种群通常表现出更大的遗传分歧。

10.In allopatric 异域的 scenarios, species are separated by geographical barriers.

在异域的情境中，物种被地理障碍隔开。

作文

In the study of biology, particularly in the field of evolution, the term allopatric is frequently used to describe a specific mode of speciation. Speciation refers to the process by which new species arise, and allopatric speciation occurs when populations of a species become geographically isolated from one another. This geographical isolation can happen due to various factors such as the formation of mountains, rivers, or even human activities that fragment habitats. The significance of allopatric speciation lies in its ability to create diversity among species, leading to the rich tapestry of life we observe today.When two populations of the same species are separated, they may begin to evolve independently over time. This process is driven by natural selection, genetic drift, and mutations, which can lead to significant differences in traits between the two groups. For example, consider a population of birds living on an island. If a storm were to separate a portion of this population to a different island, the two groups would no longer interbreed. Over generations, they would adapt to their respective environments, potentially resulting in the emergence of two distinct species. In this scenario, the original population and the new population are said to be allopatric.One fascinating example of allopatric speciation can be observed in the Darwin's finches of the Galápagos Islands. These birds evolved from a common ancestor but adapted to different ecological niches on various islands. Due to the geographical isolation of each island, the finches developed unique beak shapes and sizes, allowing them to exploit different food sources. This is a classic case illustrating how allopatric speciation can lead to the diversification of species based on environmental pressures and isolation.Another important aspect of allopatric speciation is the role of reproductive isolation. As populations diverge genetically, they may also develop differences in mating behaviors, timing, and reproductive structures. This reproductive isolation further solidifies the separation between the two populations, making it unlikely for them to interbreed even if they come into contact again in the future.In contrast to allopatric speciation, there is also parapatric and sympatric speciation. Parapatric speciation occurs when populations are partially separated by geographical barriers but still have some contact, while sympatric speciation happens without any geographical separation. Both processes illustrate the complexity of how new species can emerge, but allopatric speciation remains one of the most well-documented and understood mechanisms.Understanding allopatric speciation is crucial not only for biologists but also for conservationists. With the ongoing threat of habitat destruction and climate change, many species are becoming increasingly isolated. This isolation can accelerate the process of allopatric speciation, which could lead to the loss of genetic diversity and the extinction of species that cannot adapt quickly enough to changing environments. Therefore, recognizing the importance of preserving habitats and maintaining connectivity between populations is essential for biodiversity conservation.In conclusion, the concept of allopatric speciation provides valuable insights into the evolutionary processes that shape the diversity of life on Earth. By understanding how geographical isolation can lead to the formation of new species, we can better appreciate the intricate relationships within ecosystems and the importance of conserving our planet's biodiversity.

在生物学的研究中，特别是在进化领域，术语allopatric常用于描述一种特定的物种形成模式。物种形成是指新物种产生的过程，而allopatric物种形成发生在一个物种的种群彼此地理隔离时。这种地理隔离可能由于各种因素而发生，例如山脉、河流的形成，甚至是人类活动造成栖息地的碎片化。allopatric物种形成的重要性在于它能够创造物种之间的多样性，导致我们今天观察到的丰富生命图景。当同一物种的两个种群被隔离时，它们可能会随着时间的推移开始独立进化。这个过程由自然选择、遗传漂变和突变驱动，这可能导致两个群体之间特征的显著差异。例如，考虑一群生活在岛上的鸟。如果一场风暴将这部分种群隔离到另一个岛屿，那么这两个群体将不再交配。经过几代人，它们将适应各自的环境，可能导致两个不同物种的出现。在这种情况下，原始种群和新种群被称为allopatric。一个引人注目的allopatric物种形成的例子可以在加拉帕戈斯群岛的达尔文雀中观察到。这些鸟类源自共同的祖先，但适应了各个岛屿上的不同生态位。由于每个岛屿的地理隔离，雀鸟发展出独特的喙形状和大小，使它们能够利用不同的食物来源。这是一个经典的案例，说明了allopatric物种形成如何根据环境压力和隔离导致物种的多样化。allopatric物种形成的另一个重要方面是生殖隔离的作用。随着种群在基因上发生分歧，它们也可能在交配行为、时间和生殖结构上发展出差异。这种生殖隔离进一步巩固了两个种群之间的分离，使它们在未来再次接触时不太可能交配。与allopatric物种形成相对的是副区隔物种形成和同域物种形成。副区隔物种形成发生在种群部分被地理障碍隔离但仍有一些接触，而同域物种形成则在没有任何地理隔离的情况下发生。这两种过程都展示了新物种如何出现的复杂性，但allopatric物种形成仍然是最为文献记载和理解的机制之一。理解allopatric物种形成对生物学家和保护主义者都至关重要。面对栖息地破坏和气候变化的持续威胁，许多物种正变得越来越孤立。这种隔离可能加速allopatric物种形成的过程，导致遗传多样性的丧失以及无法快速适应变化环境的物种灭绝。因此，认识到保护栖息地和维持种群之间联系的重要性对于生物多样性保护至关重要。总之，allopatric物种形成的概念为我们提供了关于塑造地球生命多样性的进化过程的宝贵见解。通过理解地理隔离如何导致新物种的形成，我们可以更好地欣赏生态系统内复杂的关系，以及保护我们星球生物多样性的重要性。