protogyny

简明释义

英[prəʊˈtɒdʒɪni]美[proʊˈtɑːdʒɪni]

n. [植] 雌蕊先熟；[生理][植][无脊椎] 雌性先熟

英英释义

单词用法

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例句

1.Protogyny in M. grandiflora lies in a mechanism that determines the anther dehiscence stage, thus reducing self-pollination and interference between pollen and stigmas.

广玉兰的雌性先熟是通过主动控制花药开裂时间，降低雌雄功能干扰，有效减少自花授粉。

2.Protogyny in M. grandiflora lies in a mechanism that determines the anther dehiscence stage, thus reducing self-pollination and interference between pollen and stigmas.

广玉兰的雌性先熟是通过主动控制花药开裂时间，降低雌雄功能干扰，有效减少自花授粉。

3.In aquaculture, understanding protogyny is crucial for breeding programs aimed at maximizing fish production.

在水产养殖中，理解雌性先熟对旨在最大化鱼类生产的繁殖计划至关重要。

4.Researchers studying the mating habits of certain reef fish have noted that protogyny allows for a more balanced sex ratio over time.

研究某些礁鱼交配习性的研究人员注意到，雌性先熟使得性别比例随时间更加平衡。

5.In many species of fish, such as wrasses, we observe a fascinating form of reproduction called protogyny, where females can transform into males as they age.

在许多鱼类物种中，如梭鱼，我们观察到一种迷人的繁殖形式，称为雌性先熟，其中雌性随着年龄增长可以转变为雄性。

6.Some species exhibit protogyny as a strategy to ensure reproductive success in fluctuating environmental conditions.

一些物种表现出雌性先熟作为确保在环境条件波动中生殖成功的策略。

7.The phenomenon of protogyny can significantly impact population dynamics in coral reef ecosystems.

在珊瑚礁生态系统中，雌性先熟现象可能会显著影响种群动态。

作文

In the fascinating world of biology, various reproductive strategies have evolved to ensure the survival of species. One such strategy is called protogyny, which refers to a phenomenon where an organism starts its life as a female and may later change to a male. This unique reproductive adaptation is commonly observed in several fish species, particularly among reef fish. Understanding protogyny not only sheds light on the complexities of sexual differentiation in the animal kingdom but also highlights the intricate relationships between environmental factors and reproductive success.To illustrate the concept of protogyny, let us consider the case of the clownfish. In a typical clownfish group, a strict hierarchy exists, with one dominant female at the top, followed by a dominant male and several smaller males. If the dominant female dies or is removed from the group, the dominant male undergoes a transformation and becomes the new female, while one of the smaller males ascends to take the place of the dominant male. This process is a classic example of protogyny, demonstrating how these fish adapt to changes in their social structure to maintain reproductive stability.The advantages of protogyny are evident in environments where sex ratios are skewed or where competition for mates is intense. By allowing individuals to change sex based on social cues or environmental conditions, species can maximize their reproductive potential. For instance, in a population where there are more females than males, a fish that can switch from female to male can increase its chances of mating and passing on its genes. This flexibility is crucial for the survival of species in dynamic ecosystems.Moreover, protogyny is not limited to fish; it can also be found in some species of plants and invertebrates. In certain flowering plants, the reproductive structures develop in a way that promotes protogyny, ensuring that pollen is transferred efficiently between flowers. This strategy can enhance genetic diversity and improve the overall fitness of the population.In conclusion, the study of protogyny provides valuable insights into the adaptive strategies employed by various organisms in response to their environments. As we continue to explore the complexities of reproduction in nature, understanding phenomena like protogyny will help us appreciate the delicate balance of ecosystems and the evolutionary pressures that shape them. Through research and observation, we can further unravel the mysteries of life, revealing how species survive and thrive in an ever-changing world.

在生物学的迷人世界中，各种繁殖策略不断演变，以确保物种的生存。其中一种策略被称为protogyny，指的是一种现象，即生物在生命开始时为雌性，可能随后转变为雄性。这种独特的繁殖适应性在几种鱼类中普遍存在，尤其是在珊瑚礁鱼类中。理解protogyny不仅揭示了动物王国中性别分化的复杂性，还突显了环境因素与繁殖成功之间的微妙关系。为了说明protogyny的概念，让我们考虑小丑鱼的案例。在典型的小丑鱼群体中，存在严格的等级制度，最高位是一个主导雌性，接下来是一个主导雄性和若干较小的雄性。如果主导雌性死亡或被移除，主导雄性会经历转变，成为新的雌性，而其中一个较小的雄性则晋升为主导雄性。这一过程是protogyny的经典例子，展示了这些鱼如何根据社会结构的变化进行适应，以维持繁殖的稳定性。protogyny的优势在于，在性别比例失衡或伴侣竞争激烈的环境中尤为明显。通过允许个体根据社会线索或环境条件改变性别，物种可以最大化其繁殖潜力。例如，在雌性多于雄性的种群中，能够从雌性转变为雄性的鱼可以增加交配的机会，从而传递基因。这种灵活性对于动态生态系统中物种的生存至关重要。此外，protogyny并不限于鱼类；它也可以在一些植物和无脊椎动物中找到。在某些开花植物中，生殖结构的发展方式促进了protogyny，确保花朵之间的花粉有效转移。这种策略可以增强遗传多样性，提高种群的整体适应性。总之，研究protogyny为我们提供了宝贵的见解，揭示了各种生物在应对环境时所采用的适应策略。随着我们继续探索自然繁殖的复杂性，理解像protogyny这样的现象将帮助我们欣赏生态系统的微妙平衡以及塑造它们的进化压力。通过研究和观察，我们可以进一步揭开生命的奥秘，揭示物种如何在不断变化的世界中生存和繁荣。