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催产素影响男性三脊椎杆背的家长护理,跨越多个时间尺度

Usan Dan¹, Meghan F Maciejewski², Emma Schwaiger³

¹Program in Neuroscience, University of Illinois Urbana-Champaign, Urbana, IL, USA.

Hormones and behavior

|October 16, 2024

概括

催产素 (OXT) 影响了三脊的父母照顾的开始,但不是它的延续. 一个生态型的护理损失与神经回路的变化有关,OXT对OXT作用,而不是OXT水平.

科学领域:

神经内分泌学神经内分泌学
进化生物学进化生物学
行为生态学行为生态学

背景情况:

氧化素 (OXT) 和相关的神经对于脊椎动物的家长护理至关重要.
对于OXT在进化过程中失去家长照顾的作用,至今仍在很大程度上未被探索.
两种常见和白色的三脊鱼 (Gasterosteus aculeatus) 生态型表现出不同的父母照顾行为.

研究的目的:

调查OXT在进化过程中失去父母关怀中的作用.
为了比较OXT对两种Stickleback生态型的家长护理启动和维持的影响.
为了确定改变的OXT信号是否有助于白色生态型的护理损失.

主要方法:

来自常见和白鱼生态型的雄性接受了OXT,OXT抗剂或对照剂的腹腔内注射.
对注射的行为反应在与受精相对的特定时间点 (受精后0天和4天) 进行了评估.
在生态型和治疗组之间进行了比较,以分析OXT对护理行为的影响.

主要成果:

在常见的鱼中,OXT促进了父母照顾的开始,但没有维持它.
常见的未能开始护理的男性对OXT没有反应,这表明在护理终止方面可能发挥作用.
与普通鱼相比,白鱼对OXT操纵的反应不同,这表明下游神经通路发生了变化.

结论:

白鱼失去父母的照顾可能是由于OXT调节的神经回路的进化修改,而不是OXT水平或灵敏度的变化.
古老的荷尔蒙系统,如OXT,可以在不同的进化时间尺度上导致像家长照顾这样的复杂行为丧失.
这项研究提供了关于行为演变和社会行为的丧失背后的神经内分泌机制的见解.

关键词:

进化损失是一种进化损失.胃骨 (Gasterosteus aculeatus) 是一种有毒的动物.这种异素是异素.神经是一种神经.这是一种非类非.父亲的照顾父亲的照顾社会行为社会行为.

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