poikilothermic

简明释义

英[ˌpɔɪkɪləʊˈθɜːmɪk]美[ˌpɔɪkəloʊˈθəmɪk]

adj. [动] 变温的；冷血的；冷血动物的

英英释义

单词用法

同义词

反义词

例句

1.Unlike most terrestrial animals, aquatic animal species used for human consumption are poikilothermic, meaning their body temperatures vary according to ambient temperatures.

与大多数陆地动物不同，供人类消费的水生动物为冷血品种，也就是说它们的体温会根据环境温度而变化。

2.These indeed have new comparative features in terms of the tolerance, comparing with the organisms that do not need to maintain homeostasis, such as poikilothermic organisms.

这与那些不需要保持内稳态的生物如变温生物相比，的确在耐受性方面存在新的比较特点。

3.These indeed have new comparative features in terms of the tolerance, comparing with the organisms that do not need to maintain homeostasis, such as poikilothermic organisms.

这与那些不需要保持内稳态的生物如变温生物相比，的确在耐受性方面存在新的比较特点。

4.Understanding poikilothermic species is crucial for managing aquatic ecosystems.

了解变温物种对于管理水生生态系统至关重要。

5.During colder months, poikilothermic animals enter a state of dormancy to survive.

在寒冷的月份，变温动物会进入一种休眠状态以求生存。

6.Many reptiles are poikilothermic, meaning their body temperature varies with the environment.

许多爬行动物是变温的，这意味着它们的体温随环境而变化。

7.Fish are generally poikilothermic, adapting their body temperature to the water they inhabit.

鱼通常是变温的，它们的体温适应栖息的水域。

8.A poikilothermic animal like a frog must bask in the sun to warm up.

像青蛙这样的变温动物必须在阳光下晒太阳以升温。

作文

In the fascinating world of biology, organisms can be classified based on their thermoregulation strategies. One such classification is the term poikilothermic, which refers to animals that cannot maintain a constant body temperature and instead rely on external environmental conditions to regulate their body heat. This characteristic is commonly found in reptiles, amphibians, and most fish. Understanding how poikilothermic organisms function can provide insight into their survival strategies and ecological roles.Unlike mammals and birds, which are classified as homeothermic or warm-blooded, poikilothermic animals experience significant fluctuations in their body temperature. For example, when the temperature drops in their environment, a poikilothermic animal's body temperature will also decrease, leading to a state of reduced metabolic activity. This ability to adapt to varying temperatures allows these animals to survive in diverse habitats, from deserts to aquatic environments.One of the most intriguing aspects of poikilothermic organisms is their energy efficiency. Because they do not need to expend energy to maintain a stable internal temperature, they can thrive on less food compared to their warm-blooded counterparts. This energy conservation strategy is particularly advantageous in environments where food resources are scarce. For instance, during periods of low food availability, many poikilothermic species can enter a state of dormancy or hibernation, significantly reducing their metabolic needs until conditions improve.The reproductive strategies of poikilothermic animals are also influenced by their thermal regulation. Many of these species time their breeding cycles to coincide with optimal environmental conditions, such as warmer temperatures that enhance egg development. For example, certain species of frogs will only breed during specific seasons when temperatures are conducive to the survival of their offspring. This synchronization with environmental cues highlights the intricate relationship between poikilothermic organisms and their habitats.Moreover, poikilothermic animals often exhibit remarkable behavioral adaptations to cope with temperature changes. For instance, a lizard basking in the sun increases its body temperature, enabling it to become more active and hunt for food. Conversely, when temperatures soar, these animals may seek shade or burrow into the ground to avoid overheating. Such behaviors underscore the importance of behavioral thermoregulation in maintaining their physiological functions.In summary, the term poikilothermic encapsulates a unique group of animals that rely on external environmental factors to regulate their body temperature. Their energy-efficient lifestyles, adaptive reproductive strategies, and behavioral modifications illustrate the incredible diversity of life on our planet. As we continue to study these organisms, we gain a better understanding of their ecological significance and the evolutionary strategies that allow them to thrive in various environments. The study of poikilothermic animals not only enriches our knowledge of biology but also emphasizes the interconnectedness of life and the delicate balance of ecosystems.

在生物学的迷人世界中，生物可以根据它们的热调节策略进行分类。其中一个分类术语是变温动物，指的是那些无法维持恒定体温而依赖外部环境条件来调节体热的动物。这一特征通常见于爬行动物、两栖动物和大多数鱼类。理解变温动物的功能可以提供对其生存策略和生态角色的洞察。与哺乳动物和鸟类（被分类为恒温或温血动物）不同，变温动物的体温会经历显著波动。例如，当环境温度下降时，变温动物的体温也会降低，导致新陈代谢活动减少。这种适应变化温度的能力使这些动物能够在多样的栖息地中生存，从沙漠到水域环境。变温动物的一个最引人入胜的方面是它们的能量效率。因为它们不需要消耗能量来维持稳定的内部温度，所以与温血动物相比，它们可以在较少的食物下生存。这种能量节约策略在食物资源匮乏的环境中特别有利。例如，在食物供应不足的时期，许多变温动物物种可以进入休眠或冬眠状态，显著减少它们的代谢需求，直到条件改善。变温动物的繁殖策略也受到其热调节的影响。许多这些物种会将其繁殖周期的时间安排与最佳环境条件相一致，例如温暖的温度以促进卵子的发育。例如，某些青蛙物种仅在特定季节繁殖，当时气温有利于后代的生存。这种与环境线索的同步强调了变温动物与其栖息地之间错综复杂的关系。此外，变温动物通常表现出显著的行为适应，以应对温度变化。例如，一只蜥蜴在阳光下晒太阳可以提高其体温，使其变得更加活跃并捕猎食物。相反，当温度飙升时，这些动物可能会寻找阴凉处或挖掘到地下以避免过热。这种行为突显了行为热调节在维持其生理功能中的重要性。总之，术语变温动物概括了一类独特的动物，它们依赖外部环境因素来调节体温。它们节能的生活方式、适应性的繁殖策略和行为调整展示了我们星球生命的惊人多样性。随着我们继续研究这些生物，我们对它们的生态重要性以及使它们能够在各种环境中生存的进化策略有了更好的理解。对变温动物的研究不仅丰富了我们对生物学的知识，也强调了生命的相互联系和生态系统的微妙平衡。