大眼睛的小草莓鱿鱼

如果我曾经写过一部与 瘦小的小狗 一只可爱的大眼睛可爱的小,红色和深海乌贼。这不是错字。这是一只可爱的巨眼,而不是可爱的巨眼。标题? 大眼睛的小草莓鱿鱼

十八种鱿鱼,最大的大小不超过橄榄球,通常是草莓色的,深色的发光体类似于黑色的种子,增添了甜美的水果外观。所有物种都生活在中古生界中,即海洋中200至1000米之间的区域,从昏暗的灯光变为充满黑暗的栖息地。光线从上方以衰减的阳光形式发出,而下方以生物发光的形式发出。鉴于光线随深度的急剧变化,中视骨充满了 角膜 真的很棒 我敢说可怕,视觉改编。 Histioteuthid鱿鱼没什么好期待的。左眼的直径是右眼直径的两倍,这种特征只有成年后才能获得。左眼可以获得这样的比例,它实际上使头部偏离某些种类的鱿鱼的身体。

凯特·托马斯(Kate Thomas)及其同事的新作品 揭示了为什么这些草莓鱿鱼的不同眼睛使它如此 奇观 自己。该小组发现,乌贼将扩大的左眼朝上,将较小的右眼朝下。鱿鱼通常与身体成一个倾斜的角度,因此向上看的眼睛靠近45˚,向下看的眼睛靠近120˚。给定眼睛的视野,那只大眼睛将从左上方的正上方到90度水平的位置接收光线。从43-198˚或从右下方直接到水平的小眼睛。

为了使这些眼睛对准正确的区域,草莓乌贼还表现出特殊的行为。乌贼会棘手,转动身体,而头部保持相同的方向。头部会在一个精确的停止点突然突然转弯以匹配身体方向。 “这可能使直足类动物能够补偿[不同尺寸]的眼睛造成的不平衡视野,并迅速改变每只眼睛面对的方向,或者扫描它们的环境。”

那只大眼睛似乎特别适合凝视大海表面,寻找在暗淡的阳光下寻找其他生物。研究小组还发现大眼睛通常是黄色的,可以用作过滤器,以帮助消除反照明的伪装。小眼睛专用于扫描下面的黑暗深度,以发现突然的生物发光。

但是为什么两只眼睛不同?托马斯解释说:“眼睛在生长,维护和使用方面在代谢上都非常昂贵,因此,虽然大眼睛可以提高灵敏度和分辨率,但选择大眼睛可能更适合执行必要的视觉任务但不大的眼睛。”就所需的总卡路里而言,让眼睛发挥独特功能并让其中一只变得微不足道,实际上是更便宜的。

有了这些,我的朋友们就请我离开。

M博士(1801帖子)

Craig McClain is the Executive Director of the Lousiana University Marine Consortium. He has conducted deep-sea research for 20 years and published over 50 papers in the area. He has participated in and led dozens of oceanographic expeditions taken him to the Antarctic and the most remote regions of the Pacific and Atlantic. Craig’s research focuses 上 how energy drives the biology of marine invertebrates from individuals to ecosystems, specifically, seeking to uncover how organisms are adapted to different levels of carbon availability, i.e. food, and how this determines the kinds and number of species in different parts of the oceans. Additionally, Craig is obsessed with the size of things. Sometimes this translated into actually scientific research. Craig’s research has been featured 上 National Public Radio, Discovery Channel, Fox News, 国家地理 and ABC News. In addition to his scientific research, Craig also advocates the need for scientists to connect with the public and is the founder and chief editor of the acclaimed Deep-Sea News (http://jiaxiangsuji.com/), a popular ocean-themed blog that has won numerous awards. His writing has been featured in Cosmos, Science Illustrated, American Scientist, Wired, Mental Floss, and the Open Lab: The Best Science Writing 上 the Web.


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