迁徙的风险:并非所有群居的鸟都能到达适当的避难所
Koutaro Ould Maeno1, Ahmed Salem Benahi2, Mohamed El Hacen Jaavar2
1Japan International Research Center for Agricultural Sciences (JIRCAS), Ohwashi 1-1, Tsukuba, Ibaraki, 305-8686, Japan. kmaeno@affrc.go.jp.
Die Naturwissenschaften
|May 2, 2024
概括
迁徙的沙漠虫女根据避难所的质量调整反捕食者的行为. 适当的避难所会触发特定的防御,而糟糕的避难所会导致在寒冷的温度下模两可的逃生决定.
科学领域:
- 生态生态学 生态生态学
- 动物行为 动物行为
- 进化生物学 进化生物学
背景情况:
- 湿热动物依靠避难所来防御捕食者,特别是在寒冷的时候,因为活动逃避有限.
- 迁徙物种在选择最佳避难所时可能面临挑战,这会影响其生存.
- 沙漠女 (Schistocerca gregaria) 在撒哈拉沙漠中经历每天的热限制.
研究的目的:
- 为了研究迁移性热如何修改防御行为,以应对寒冷时期的避难品质.
- 为了确定休息植物类型和高度对沙漠虫的防御策略的影响.
主要方法:
- 在撒哈拉沙漠群众性沙漠的观测研究.
- 模拟地面掠食者的方法来引起防御行为.
- 记录的休息植物类型 (灌木/灌木) 和高度 (例如,>2米,<1.5米).
- 记录了两个主要的防御行为:下降和保持静止.
主要成果:
- 在灌木里的虫通常会掉下来躲藏,不管灌木的高度如何.
- 在高2米以上的灌木上休息的女保持了静止状态.
- 在高度小于1.5米的灌木 (不安全的避难所) 上,近一半的树木表现出降落和静止的行为,这表明它们不决心.
- 防御行为是有效的,并与避难所类型相匹配,最大限度地减少了需要移动的需要.
结论:
- 沙漠的女表现出灵活的反捕食者行为,取决于庇护所的可用性和质量.
- 在每天的热量限制之前选择合适的避难所对于迁徙性外热虫的生存至关重要.
- 由于在及时选择避难所方面存在潜在挑战,移民对生态热植物构成风险.
更多相关视频
04:41Author Spotlight: Analysis of Ovarian Anatomy in Migratory Insects to Overcome Experimental Challenges
Published on: July 14, 2023
1.4K
07:37Measuring the Flight Ability of the Ambrosia Beetle, Platypus Quercivorus Murayama, Using a Low-Cost, Small, and Easily Constructed Flight Mill
Published on: August 6, 2018
7.6K
相关概念视频
Migration
7.9K
Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
7.9K
Osmoregulation in Insects
16.2K
Malpighian tubules are specialized structures found in the digestive systems of many arthropods, including most insects, that handle excretion and osmoregulation. The tubules are typically arranged in pairs and have a convoluted structure that increases their surface area.
16.2K
Genetic Drift
39.7K
Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.
39.7K
