从毛里求斯岛附近的新生到成年 (Physeter macrocephalus) 的年龄和脉冲间隔关系
Maxence Ferrari1,2, Marie Trinh3, François Sarano4,5
1Université de Toulon, Aix Marseille Université, CNRS, LIS, DYNI, Toulon, France. maxence.ferrari@gmail.com.
Scientific reports
|August 9, 2024
概括
这项研究揭示了第一个脉冲间隔 (IPI) /年龄关系对于幼 (Physeter macrocephalus). 这一发现有助于通过被动声学监测 (PAM) 估计鱼的年龄.
科学领域:
- 海洋生物学 海洋生物学
- 生物声学是一种生物声学.
- 动物生态动物生态学
背景情况:
- 精子 (Physeter macrocephalus) 的发声,特别是点击,通过脉冲间隔 (IPI) 提供对身体长度的见解.
- 这些点击的发育轨迹及其与年龄的关系,特别是在青少年中,仍然不太清楚.
- 了解鱼的生长对于人口评估和保护工作至关重要.
研究的目的:
- 为了确定第一个脉冲间隔 (IPI) /年龄关系,年轻的雄性和雌性精液 (Physeter macrocephalus).
- 分析幼的生长模式,包括早期个体间的变异性和性变态性.
- 通过被动声学监测 (PAM) 数据提供估计鱼年龄的工具.
主要方法:
- 进行了9年的毛里求斯金社会单位的视听录音.
- 已识别和老化的成年雌性和幼.
- 从7天到大约38岁的个体测量了点击的脉冲间隔 (IPI).
主要成果:
- 开发了第一个IPI/年龄关系,用于幼.
- 在青少年声器官生长中观察到早期的个体间变异性和性二态性.
- 适配的生长模型预测成年人平均IPI为3.5毫秒,身体成熟度约为30岁.
结论:
- 已建立的IPI/年龄关系为老化鱼提供了一种新的方法.
- 这种关系可以显著提高使用被动声学监测 (PAM) 的人口统计研究.
- 这些发现有助于更好地了解鱼的发展和种群动态.
相关概念视频
00:53Migration
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.
01:07Speciation Rates
Speciation can proceed at markedly different rates, and evolutionary biologists commonly describe these differences through the models of gradualism and punctuated equilibrium. Both patterns explain how new species arise, but they differ in the tempo and continuity of evolutionary change. In both cases, evolutionary change arises from heritable variation within populations, with natural selection often shaping traits that improve survival and reproduction under specific environmental conditions.
02:39Gene Flow
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.