耳石化学揭示了布兰斯菲尔德海峡南部和南乔治亚大陆架之间彩绘海象幼鱼种群的差异

IF 2.6 2区 地球科学 Q2 GEOGRAPHY, PHYSICAL
Jie Zhou , Guoping Zhu
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引用次数: 0

摘要

作为南大洋中最丰富和最广泛的鱼类之一,Nototheniops larseni是连接下层和上层食物网的纽带。耳石化学是研究鱼类生活史和区分种群结构的一种行之有效的方法,耳石核的化学分析可以用来区分鱼类种群。研究结果表明,布兰斯菲尔德海峡南部的N. larseni幼鱼种群来源于相同的环境,但布兰斯菲尔德海峡南部和南乔治亚大陆架的种群在地理上是分开的。在布兰斯菲尔德海峡南部的N. larseni幼鱼耳石剖面中,7Li与42Ca的比值明显低于南乔治亚陆架,表明鱼耳石中的Li可以作为反映南大洋海冰动态的化学标签。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Otolith chemistry reveals painted notie (Nototheniops larseni) juvenile stocks differed between southern Bransfield Strait and South Georgia shelf
The painted notie Nototheniops larseni is a link between the lower and upper levels of food web as one of the most abundant and widespread fish species in the Southern Ocean. Otolith chemistry is a well-established approach for studying fish life histories and differentiating stock structure, and chemical analysis of otolith core can be used to distinguish fish stocks. This study demonstrates that the N. larseni juvenile stocks in the southern Bransfield Strait are sourced from the same environment, but the stocks in the southern Bransfield Strait and at South Georgia shelf are separated geographically using chemical data from otolith core, hatching and feeding checks, and edge. The ratios of 7Li to 42Ca across otolith sections of N. larseni juveniles in the southern Bransfield Strait are lower significantly than those at the South Georgia shelf, indicating the Li in fish otolith may act as a chemical tag for reflecting sea ice dynamics in the Southern Ocean.
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来源期刊
CiteScore
5.90
自引率
10.00%
发文量
398
审稿时长
3.8 months
期刊介绍: Palaeogeography, Palaeoclimatology, Palaeoecology is an international medium for the publication of high quality and multidisciplinary, original studies and comprehensive reviews in the field of palaeo-environmental geology. The journal aims at bringing together data with global implications from research in the many different disciplines involved in palaeo-environmental investigations. By cutting across the boundaries of established sciences, it provides an interdisciplinary forum where issues of general interest can be discussed.
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