Source / 来源: 讲解手册/珍奇柜-活化石展签五审_0923.pdf
Page / 页码: 25
Material / 材料类型: exhibit_context
Text extraction / 提取方式: native

Source transcription; wording is retained as supplied. OCR may contain recognition errors; consult the PDF/image.
来源转录；保留原展签措辞。OCR可能包含识别误差，请核对PDF或图像。

古巴骨雀鳝
延续至今的古老铰齿鱼类
古巴骨雀鳝是雀鳝科中体型较大的物种
之一，也是现生较古老的辐鳍鱼类。它身
体细长，吻部延长，口中具有排列紧密的
尖锐牙齿，全身覆盖坚硬的菱形硬鳞，展
现出雀鳝类独特的适应。古巴雀鳝属于
伏击型捕食者，主要捕食鱼类及其他水
生动物。其鳔具有丰富的血管结构，能够
辅助空气呼吸，使其可以适应部分低氧
水域环境。雀鳝类起源悠久，在中生代已
经出现，并保留了许多独特的形态特征，
为研究辐鳍鱼类的演化历史和生态适应
提供了重要线索。
Atractosteus tristoechus
An Ancient Gars Lineage Surviving Today
The Cuban gar is one of the larger representatives of the
family Lepisosteidae and one of the most ancient lineages 
of living ray-finned fishes. It has an elongated body, an 
extended snout, and densely arranged sharp teeth, with 
the entire body covered by hard rhomboid ganoid scales, 
displaying the distinctive adaptations of gars. The Cuban 
gar is an ambush predator that primarily feeds on fishes 
and other aquatic animals. Its swim bladder contains a 
rich network of blood vessels and can function as an 
accessory respiratory organ, allowing it to tolerate 
low-oxygen aquatic environments. Gars have a long 
evolutionary history, first appearing in the Mesozoic, and 
have retained many distinctive morphological features. 
They provide important insights into the evolutionary 
history and ecological adaptations of ray-finned fishes.