protandry

简明释义

英[/proʊˈtændəri/]美[/proʊˈtændəri/]

n. 雄蕊先熟

英英释义

单词用法

同义词

反义词

例句

1.Protandry refers the earlier arrival to breeding sites or reproductive stages of male animals relative to females on average.

雄性早现是指雄性相对于雌性更早进入繁殖状态或更早到达繁殖地的现象。

2.Protandry refers the earlier arrival to breeding sites or reproductive stages of male animals relative to females on average.

雄性早现是指雄性相对于雌性更早进入繁殖状态或更早到达繁殖地的现象。

3.The phenomenon of protandry 雄蕊先熟 can help prevent self-fertilization in hermaphroditic organisms.

在雌雄同体生物中，protandry 雄蕊先熟 现象可以帮助防止自我授粉。

4.Some fish species exhibit protandry 雄蕊先熟, where individuals start as males and can later change to females.

一些鱼类物种表现出 protandry 雄蕊先熟，个体最初为雄性，后来可以转变为雌性。

5.The sexual system of certain flowers is characterized by protandry 雄蕊先熟, which helps maximize cross-pollination.

某些花卉的性别系统以 protandry 雄蕊先熟 为特征，有助于最大化异花授粉。

6.In many species of plants, such as some orchids, protandry 雄蕊先熟 ensures that pollen is released before the stigma is receptive.

在许多植物物种中，例如一些兰花，protandry 雄蕊先熟 确保花粉在柱头可接受之前释放。

7.Understanding protandry 雄蕊先熟 is crucial for biologists studying plant reproduction strategies.

理解 protandry 雄蕊先熟 对于研究植物繁殖策略的生物学家来说至关重要。

作文

In the intricate world of biology, various reproductive strategies have evolved to ensure the survival and continuation of species. One fascinating strategy is known as protandry, which refers to a form of sequential hermaphroditism where an organism begins its life as a male and later transitions to a female. This phenomenon can be observed in several species, particularly among certain fish and invertebrates. Understanding protandry not only highlights the diversity of reproductive mechanisms in nature but also provides insights into the ecological and evolutionary dynamics that drive these adaptations.The occurrence of protandry is often linked to environmental factors and social structures within populations. For instance, in some species of clownfish, males are responsible for guarding and caring for the eggs laid by the dominant female. If the female dies or is removed from the group, the largest male will undergo a sex change, becoming female to take her place. This ensures that the breeding pair remains intact and that the genetic material continues to propagate. Such a strategy maximizes reproductive success in environments where finding a mate can be challenging.Moreover, protandry can be advantageous in species where size and age correlate with reproductive output. In many cases, larger females produce significantly more eggs than smaller ones. By starting life as a male, an organism can grow and accumulate resources before making the transition to female, thereby increasing its overall reproductive potential. This strategy is particularly evident in species like the bluehead wrasse, where individuals exhibit distinct roles based on their size and gender.The implications of protandry extend beyond individual species; they also influence population dynamics and community structure. As organisms switch sexes, they can alter mating patterns and affect the genetic diversity within a population. This flexibility in reproductive roles may provide a buffer against environmental changes, allowing populations to adapt more readily to shifting conditions.However, protandry is not without its challenges. The transition from male to female can be influenced by various factors, including hormonal changes, social interactions, and environmental cues. In some cases, if the conditions are not favorable, individuals may remain male throughout their lives, limiting their reproductive opportunities. This highlights the delicate balance that organisms must maintain in response to their surroundings.In conclusion, protandry serves as a remarkable example of nature's ingenuity in reproductive strategies. By allowing individuals to adapt their roles based on environmental and social factors, this phenomenon enhances the resilience of species and contributes to the rich tapestry of life on Earth. As we continue to study these complex systems, we gain a deeper appreciation for the intricacies of evolution and the myriad ways in which life has found to thrive. Understanding protandry not only enriches our knowledge of biology but also underscores the importance of preserving the habitats that support such diverse forms of life.

在生物学的复杂世界中，各种繁殖策略已经进化出来，以确保物种的生存和延续。一种迷人的策略被称为protandry，它指的是一种顺序雌雄同体的形式，其中一个生物开始其生命时是雄性，随后转变为雌性。这种现象可以在多种物种中观察到，特别是在某些鱼类和无脊椎动物中。理解protandry不仅突显了自然界繁殖机制的多样性，还提供了对推动这些适应的生态和进化动态的深入洞察。protandry的发生往往与环境因素和种群内的社会结构有关。例如，在某些小丑鱼物种中，雄性负责保护和照顾由主导雌性产下的卵子。如果雌性死亡或从群体中移除，最大的雄性将经历性别变化，变成雌性以取代她的位置。这确保了繁殖对保持完整，并且遗传物质继续传播。这种策略最大化了在寻找配偶可能具有挑战性的环境中的繁殖成功。此外，protandry在物种大小和年龄与繁殖输出相关的情况下也可能是有利的。在许多情况下，较大的雌性比较小的雌性产下更多的卵子。通过作为雄性开始生活，生物可以在过渡到雌性之前成长并积累资源，从而增加其整体繁殖潜力。这种策略在蓝头皱纹鱼等物种中尤为明显，在这些物种中，个体根据其大小和性别表现出不同的角色。protandry的影响超越了个别物种；它们还影响种群动态和群落结构。当生物转换性别时，它们可以改变交配模式并影响种群内的遗传多样性。这种繁殖角色的灵活性可能为应对环境变化提供缓冲，使种群能够更快地适应不断变化的条件。然而，protandry并非没有挑战。从雄性到雌性的过渡可能受到各种因素的影响，包括激素变化、社会互动和环境线索。在某些情况下，如果条件不利，个体可能会终生保持雄性，从而限制其繁殖机会。这突显了生物必须在响应其周围环境时保持的微妙平衡。总之，protandry作为自然在繁殖策略方面创造力的杰出例证。通过允许个体根据环境和社会因素调整其角色，这一现象增强了物种的韧性，并为地球上丰富的生命织锦做出了贡献。随着我们继续研究这些复杂的系统，我们对进化的复杂性和生命如何找到繁荣的无数方式有了更深入的理解。理解protandry不仅丰富了我们对生物学的知识，还强调了保护支持如此多样生命形式的栖息地的重要性。