Functional Morphology of the Urohyal Shunt for Symmetrical and Asymmetrical Ventilation in the Flatfish, Isopsetta isolepis
Functional Morphology of the Urohyal Shunt for Symmetrical and Asymmetrical Ventilation in the Flatfish, Isopsetta isolepis
复制标题
比目鱼 Isopsetta isolepis 对称和不对称通气的尿透明分流的功能形态
DOI：
10.1093/icb/icac126
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发表时间：
2022
影响因子：
2.6
通讯作者：
Farina, S. C.
中科院分区：
文献类型：
--
作者：
Amacker, K.;Farina, S. C.
比目鱼是一种底栖鱼类，众所周知，它们能够埋藏在沉积物中，在几秒钟内从沉积物上方过渡到下方。横向扁平的身体使比目鱼能够与基底齐平，这种行为是由头部一侧有两只眼睛的不对称脑颅促进的。尽管颅神经不对称，它们的鳃腔是高度对称的。此外，大多数比目鱼有一个独特的形状urohyal骨，形成通道的水旅行腹之间的“眼侧”和“盲侧”鳃腔。我们的研究探讨是否由鳃室产生的运动学和压力也是对称的呼吸过程中的沉积物上方和下方，并在沉积物中快速埋藏。我们研究Isopsetta isolepisindividuals使用sonomicrometry晶体测量的位置的变化，相对于urohyal和压力传感器记录鳃腔压力在埋葬过程中的鳃盖骨。我们得出结论。Isolepis在沉积物上方和下方表现出对称和不对称呼吸。压力和运动是高度不对称的埋藏喷射。我们观察到的运动表明，urohyal是一个积极的分流，让眼睛之间的水盲侧鳃腔。
Flatfishes are benthic fishes that are well known for their ability to bury in the sediment, making the transition from above to below the sediment in a matter of seconds. Laterally flattened bodies allow flatfishes to lay flush against the substrate, a behavior facilitated by having an asymmetrical neurocranium with two eyes on one side of the head. Despite neurocranial asymmetry, their gill chambers are highly symmetrical. Additionally, most flatfishes have a uniquely shaped urohyal bone that forms passageway for water to travel ventrally between the “eyed-side” and “blind-side” gill chambers. Our study examines whether the kinematics and pressures generated by the gill chambers are also symmetrical during breathing above and below the sediment and during rapid burial in sediment. We studiedIsopsetta isolepisindividuals using sonomicrometry crystals to measure the changes in positions of the opercle bones relative to the urohyal and pressure transducers to record gill chamber pressures during burial. We concludeI. isolepisexhibit both symmetrical and asymmetrical breathing above and below the sediment. Pressures and movements were highly asymmetrical during burial jetting. We observed motions that indicate that the urohyal is an active shunt to allow passage of water between the eyed to the blind-side gill chambers.