paedogenesis

简明释义

英[ˌpiːdəʊˈdʒenɪsɪs]美[ˌpidoˈdʒenəsɪs]

n. 幼体生殖

英英释义

单词用法

同义词

反义词

例句

1.Neoteny is also known as pedogenesis or paedogenesis.

性早熟也称为成土作用或幼体生殖。

2.Neoteny is also known as pedogenesis or paedogenesis.

性早熟也称为成土作用或幼体生殖。

3.In certain species of insects, paedogenesis 幼年生殖 allows larvae to reproduce before reaching full maturity.

在某些昆虫物种中，paedogenesis 幼年生殖 使得幼虫在达到完全成熟之前就可以繁殖。

4.The phenomenon of paedogenesis 幼年生殖 can be observed in some amphibians where young individuals can produce offspring.

在某些两栖动物中可以观察到 paedogenesis 幼年生殖 现象，年轻个体能够产生后代。

5.Researchers are studying paedogenesis 幼年生殖 to understand its evolutionary advantages in specific environments.

研究人员正在研究 paedogenesis 幼年生殖 以了解其在特定环境中的进化优势。

6.In some cases, paedogenesis 幼年生殖 may lead to rapid population growth among certain species.

在某些情况下，paedogenesis 幼年生殖 可能导致某些物种的快速种群增长。

7.The study of paedogenesis 幼年生殖 is crucial for understanding the life cycles of various organisms.

对 paedogenesis 幼年生殖 的研究对于理解各种生物的生命周期至关重要。

作文

In the fascinating world of biology, many concepts challenge our traditional understanding of life cycles and reproduction. One such concept is paedogenesis, which refers to the phenomenon where an organism reaches sexual maturity while still in its larval or juvenile stage. This unique reproductive strategy can be observed in certain species, particularly among some amphibians and insects. The implications of paedogenesis extend beyond mere biological curiosity; they offer insights into evolutionary adaptations and ecological dynamics. To better understand paedogenesis, it is essential to explore its occurrence in nature. For instance, the axolotl, a type of salamander, exemplifies this concept perfectly. Unlike most amphibians that undergo metamorphosis, axolotls retain their larval features throughout their lives, a condition known as neoteny. They develop reproductive organs while still maintaining their gills and aquatic lifestyle. This adaptation allows them to thrive in specific environments, where the ability to reproduce without undergoing a complete metamorphosis can be advantageous. The evolutionary significance of paedogenesis cannot be understated. In environments where conditions are stable and resources are abundant, retaining juvenile characteristics can be beneficial. For example, in isolated water bodies where axolotls live, the risk of predation may be lower, and food sources may be plentiful. As a result, these organisms can continue to grow and reproduce without the need to transition to a more vulnerable adult form. This strategy not only enhances their survival but also contributes to the genetic diversity of their populations. Moreover, paedogenesis raises intriguing questions about the mechanisms of evolution and development. How do certain species develop this ability? What genetic factors are involved in maintaining larval traits while also allowing for reproduction? Researchers are delving into these questions, examining the genetic and environmental triggers that facilitate paedogenesis. Understanding these processes could shed light on broader evolutionary patterns and the adaptability of life forms in changing environments. In addition to its biological implications, paedogenesis also has practical applications in conservation efforts. As habitats continue to change due to climate change and human activities, understanding the reproductive strategies of various species can inform conservation strategies. For instance, if a species exhibits paedogenesis, conservationists might focus on preserving specific habitats that support these unique life cycles. By doing so, they can help ensure the survival of species that rely on non-traditional reproductive methods. In conclusion, paedogenesis is a remarkable biological phenomenon that challenges our understanding of life cycles and reproductive strategies. Through examples like the axolotl, we see how this process can provide evolutionary advantages and enhance survival in specific environments. As research continues to unravel the complexities of paedogenesis, we gain valuable insights into the adaptability of life on Earth. This understanding not only enriches our knowledge of biology but also informs conservation efforts aimed at protecting the diverse forms of life that inhabit our planet. Ultimately, paedogenesis serves as a reminder of the intricate and often surprising ways that nature evolves and adapts to its surroundings.

幼态生殖是生物学中一个引人入胜的概念，它挑战了我们对生命周期和繁殖的传统理解。幼态生殖指的是一种现象，其中生物体在其幼虫或幼年阶段就达到了性成熟。这种独特的繁殖策略可以在某些物种中观察到，尤其是在某些两栖动物和昆虫中。幼态生殖的影响超出了生物学的好奇心，它为我们提供了对进化适应和生态动态的深入见解。 为了更好地理解幼态生殖，必须探索它在自然界中的发生。例如，墨西哥钝口螈（axolotl）完美地体现了这一概念。与大多数两栖动物经历变态发育不同，墨西哥钝口螈在一生中保留了幼虫特征，这种情况被称为幼态保持。它们在仍然保持鳃和水生生活方式的同时，发育出生殖器官。这种适应使它们能够在特定环境中生存，在这些环境中，能够在不经历完全变态的情况下繁殖是有利的。 幼态生殖的进化意义不可低估。在条件稳定、资源丰富的环境中，保留幼年特征可能是有益的。例如，在墨西哥钝口螈生活的隔离水域中，捕食风险可能较低，食物来源可能丰富。因此，这些生物可以继续生长和繁殖，而无需转变为更脆弱的成年形态。这一策略不仅增强了它们的生存能力，还促进了其种群的遗传多样性。 此外，幼态生殖引发了关于进化和发育机制的有趣问题。某些物种如何发展出这种能力？哪些遗传因素参与维持幼虫特征，同时又允许繁殖？研究人员正在深入探讨这些问题，检查促进幼态生殖的遗传和环境触发因素。理解这些过程可以揭示更广泛的进化模式以及生命形式在变化环境中的适应性。 除了生物学意义外，幼态生殖在保护工作中也具有实际应用。随着栖息地因气候变化和人类活动而持续变化，了解各种物种的繁殖策略可以为保护策略提供指导。例如，如果一个物种表现出幼态生殖，保护主义者可能会专注于保护支持这些独特生命周期的特定栖息地。通过这样做，他们可以帮助确保依赖非传统繁殖方法的物种的生存。 总之，幼态生殖是一个显著的生物现象，它挑战了我们对生命周期和繁殖策略的理解。通过墨西哥钝口螈等例子，我们看到这一过程如何提供进化优势，并增强特定环境中的生存能力。随着研究继续揭示幼态生殖的复杂性，我们获得了对地球生命适应性的宝贵见解。这种理解不仅丰富了我们对生物学的知识，还有助于保护努力，旨在保护栖息在我们星球上的多样生命形式。最终，幼态生殖提醒我们，自然以复杂而常常令人惊讶的方式进化和适应其环境。