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估计的捕食者组成使用环境DNA分析和颜色图案的雄性皮在引入的河流

Yukuto Sato¹, Yuta Sato², Ozora Deki^2,3

¹Research Laboratory Center, Faculty of Medicine, University of the Ryukyus, 1076 Kiyuna Ginowan, Okinawa, 901-2720, Japan. yuksato@cs.u-ryukyu.ac.jp.

Scientific reports

|January 6, 2026

概括

冲绳的侵入性鱼 (Poecilia reticulata) 显示了与当地掠食者相关的颜色模式变化. 这表明,在从本地掠食者手中释放后,它们的适应性有助于成功入侵.

科学领域:

侵袭生物学侵袭生物学
生态生态学生态生态学
进化生物学进化生物学

背景情况:

鱼 (Poecilia reticulata) 是一个全球入侵的物种.
雄性鱼的色彩影响了掠食风险,但它与当地掠食者协会的联系还没有得到充分研究.

研究的目的:

在引入的种群中,研究雄性鱼体颜色模式和当地掠食者协会之间的关系.
确定鱼的颜色是否适应了日本冲绳的捕食者景观.

主要方法:

环境DNA (eDNA) 对水样进行metabarcoding,以识别鱼类家族.
对雄性鱼颜色斑点区域的成像分析.
对捕食者存在和鱼颜色斑点组合的统计分析.

主要成果:

在冲绳发现了六个潜在的鱼捕食者家族:Anguillidae,Eleotridae,Gobiidae,Cichlidae,Mugilidae和Cyprinidae.
在本地息地中主要的捕食者 - - Characiformes,没有被检测到.
在特定颜色斑点 (例如,色,蓝绿色) 和捕食者家族 (例如,Anguillidae,Cichlidae) 之间发现了显著的关联.

结论:

冲绳的古皮似乎在生态上从主要的本地捕食者中释放出来.
雄性皮的颜色模式变化表明它们适应了新的捕食者环境.
这些适应可能有助于鱼在冲绳的成功入侵.

关键词:

波埃西里亚波埃西里亚鱼类动物群鱼类动物群侵入性物种是一种入侵性物种.转基因组学是指转基因组学.我们的eDNADNA

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