News Release

鱼类繁殖场的猎物尺寸的塑料

Peer-Reviewed Publication

Proceedings of the National Academy of Sciences

Numerous Larval Fish Species, Often Just Weeks Old, Were Found to Have Plastics in Their Stomachs

image: Numerous larval fish species, often just weeks old, were found to have plastics in their stomachs, including mahi-mahi (top left), flying fish (top right), spearfish (middle right), jacks, (bottom right), triggerfish (two sizes, bottom left), and damsels (middle left). view more 

Credit: Image courtesy of Jonathan L. Whitney.

一项研究探索了塑料在鱼类繁殖场的普遍性。海洋条件决定了幼鱼的存活,但是影响存活的栖息地偏好以及海洋表面条件尚未得到充分理解。Jamison M. Gove及其同事于2016年到2018年之间在夏威夷岛的沿海水域的海洋表面进行了100次浮游植物网的拖网。这组作者发现,由光滑的表面海水的线组成的表面光滑区起到了幼鱼繁殖场的作用。与表面光滑区附近的周边水相比,光滑区表现出了幼鱼密度更高,以及浮游植物和浮游动物被幼鱼摄取。与在周边海水中的幼鱼相比,光滑区的幼鱼更大、发育更好,并且更胜任游泳能力。然而,光滑区的猎物尺寸的塑料的丰富程度比周边水域高40.9%。在光滑区,塑料远超幼鱼的数量,达到了7比1。这组作者在解剖了658条幼鱼之后,发现了8.6%的幼鱼,包括飞鱼和剑鱼的幼鱼,吃下了塑料。尽管光滑区只占了夏威夷岛沿海的不到10%,这组作者发现,光滑区含有全部表面栖息的幼鱼的42.3%,以及全部漂浮塑料的91.8%。这组作者说,这些发现提示,幼鱼繁殖场的塑料积累可能影响海洋生态系统。

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