melanistic

简明释义

英[ˌmɛləˈnɪstɪk]美[ˌmɛləˈnɪstɪk]

[生物] 带黑色的

英英释义

单词用法

同义词

反义词

例句

1.Our results showed that the body color of P. versicolor in "melanistic" habitat was significantly darker than P. frontalis in the "non-melanistic" withered yellow habitat.

研究结果表明， 黑化生境下的变色沙蜥体色显著深于非黑化枯黄色生境下的草原沙蜥。

2.Our results showed that the body color of P. versicolor in "melanistic" habitat was significantly darker than P. frontalis in the "non-melanistic" withered yellow habitat.

研究结果表明， 黑化生境下的变色沙蜥体色显著深于非黑化枯黄色生境下的草原沙蜥。

3.Researchers are studying the genetic factors that cause melanistic 黑色素过多的 coloration in animals.

研究人员正在研究导致动物出现melanistic 黑色素过多的 色彩的遗传因素。

4.The melanistic 黑色素过多的 phase of this butterfly is often mistaken for a different species.

这种蝴蝶的melanistic 黑色素过多的 阶段常常被误认为是不同的物种。

5.A melanistic 黑色素过多的 variant of the common house cat can be quite striking.

一种常见家猫的melanistic 黑色素过多的 变种可能非常引人注目。

6.Some species of frogs exhibit melanistic 黑色素过多的 traits, making them harder to spot in their natural habitat.

某些青蛙物种表现出melanistic 黑色素过多的 特征，使它们在自然栖息地中更难被发现。

7.The rare melanistic 黑色素过多的 leopard was spotted in the jungle.

在丛林中发现了稀有的melanistic 黑色素过多的 豹。

作文

In the fascinating world of genetics and animal adaptations, the term melanistic refers to an organism that has an excess of dark pigmentation. This phenomenon can be observed in various species across the animal kingdom, including mammals, birds, and reptiles. The presence of a melanistic trait often leads to striking appearances, such as a black panther or a dark-colored snake, which can evoke both admiration and curiosity among nature enthusiasts. Understanding the reasons behind this adaptation can provide valuable insights into survival strategies and environmental interactions.The occurrence of melanistic individuals is often attributed to genetic mutations that affect the production of melanin, the pigment responsible for coloration in skin, fur, and feathers. These mutations can arise from various factors, including environmental pressures, predation, and habitat conditions. For instance, in dense forests where light is limited, darker-colored animals may have a better chance of evading predators or ambushing prey, thus enhancing their survival rates. This concept of natural selection highlights how certain traits can become more prevalent in a population over time due to their adaptive advantages.Interestingly, melanistic variations are not exclusive to one species. In fact, many animals exhibit this trait as a response to their habitats. For example, in some regions, leopards may display a melanistic coat to blend in with the shadows of their surroundings, making them more effective hunters. Similarly, certain species of frogs and lizards have been observed to develop darker hues in response to their environment. This adaptability showcases the incredible versatility of life and its ability to thrive under various conditions.However, the phenomenon of melanism is not without its challenges. While darker pigmentation can provide camouflage, it may also come with disadvantages in different environments. In areas with abundant sunlight, melanistic animals may suffer from overheating, as darker colors absorb more heat. This trade-off illustrates the complex relationship between an organism's physical traits and its ecological niche.Moreover, the study of melanistic animals has implications for conservation efforts. As habitats change due to climate change and human activity, understanding how these adaptations affect species survival is crucial. Conservationists may need to consider the presence of melanistic individuals when developing strategies to protect vulnerable populations. By recognizing the role of genetic diversity, including variations like melanism, we can better appreciate the intricate balance of ecosystems and the importance of preserving biodiversity.In conclusion, the term melanistic encapsulates a remarkable aspect of nature's ingenuity. From the striking appearance of melanistic creatures to the underlying genetic mechanisms that drive these adaptations, there is much to explore and understand. As we continue to study the intricacies of animal behavior and genetics, we uncover the ways in which life adapts and thrives in the face of adversity. Embracing the diversity of life, including melanistic variations, enriches our appreciation for the natural world and reinforces the importance of conservation efforts to safeguard these extraordinary beings.

在迷人的遗传学和动物适应性世界中，术语melanistic指的是一种生物具有过多的深色素。这种现象可以在动物王国中的各种物种中观察到，包括哺乳动物、鸟类和爬行动物。melanistic特征的存在通常会导致引人注目的外观，例如黑豹或深色蛇，这可能引起自然爱好者的钦佩和好奇心。理解这种适应背后的原因可以为生存策略和环境互动提供有价值的见解。melanistic个体的出现通常归因于影响黑色素产生的基因突变，黑色素是负责皮肤、毛发和羽毛着色的色素。这些突变可能由于各种因素而产生，包括环境压力、捕食和栖息地条件。例如，在光线有限的密林中，深色动物可能更容易逃避捕食者或伏击猎物，从而提高其生存率。这种自然选择的概念突显了某些特征如何由于其适应优势而在种群中变得更加普遍。有趣的是，melanistic变异并不局限于一种物种。事实上，许多动物表现出这一特征，以响应其栖息地。例如，在某些地区，豹子可能会显示出melanistic的外套，以便与周围的阴影融为一体，使它们成为更有效的猎手。同样，某些种类的青蛙和蜥蜴也被观察到在其环境中发展出更深的色调。这种适应性展示了生命的惊人多样性及其在各种条件下蓬勃发展的能力。然而，melanism现象并非没有挑战。虽然较深的色素可以提供伪装，但在不同的环境中，它也可能带来劣势。在阳光充足的地区，melanistic动物可能会遭受过热，因为深色吸收更多的热量。这种权衡说明了生物的物理特征与其生态位之间复杂的关系。此外，研究melanistic动物对保护工作具有重要意义。随着栖息地因气候变化和人类活动而变化，了解这些适应如何影响物种生存至关重要。保护主义者在制定保护脆弱种群的策略时，可能需要考虑melanistic个体的存在。通过认识到遗传多样性的作用，包括像melanism这样的变异，我们可以更好地欣赏生态系统的复杂平衡以及保护生物多样性的重要性。总之，术语melanistic概括了自然聪明才智的一个显著方面。从melanistic生物的引人注目的外观到驱动这些适应的潜在遗传机制，还有很多值得探索和理解的内容。随着我们继续研究动物行为和遗传学的复杂性，我们揭示了生命在逆境面前如何适应和繁荣。拥抱生命的多样性，包括melanistic变异，丰富了我们对自然世界的欣赏，并强化了保护努力的重要性，以保护这些非凡的生物。