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Migration patterns and habitat use of the tapertail anchovy Coilia mystus in the Oujiang River Estuary and the Zhujiang River Estuary, China

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Acta Oceanologica Sinica 2019年第8期38卷 35-40页

作者： Tao Jiang Hongbo Liu Honghui Huang Jian Yang Key Laboratory of Fishery Ecological Environment Assessment and Research Conservation in Middle and Lower Reaches of the Yangtze River Freshwater Fisheries Research Center Chinese Academy of Fishery Sciences Wuxi 214081 China South China Sea Fishery Research Institute Chinese Academy of Fishery Sciences Guangzhou 510300 China

Habitat use of the tapertail anchovy(Coilia mystus Linnaeus, 1758) from the Oujiang River Estuary and the Zhujiang(Pearl) River Estuary was studied by examining the environmental signatures of Sr and Ca in otoliths using electron probe microanalysis. Individuals from the Oujiang River had higher and varied Sr:Ca ratios(expressed as(Sr:Ca)×1 000, 3.83–13.0 average) in the otolith core regions, suggesting that they were born in brackish or sea waters, and that a freshwater habitat might not be necessary for egg hatching and larval ***, individuals from the Zhujiang River had lower Sr:Ca ratios(0.39–2.51 average) in the core regions,suggesting a freshwater origin. After hatching, anchovies from the Zhujiang River migrate downstream to the river estuary close to brackish water. Our results demonstrated varied habitat use for spawning during stages of early life history between the two populations, and suggested that such variations are promoting diversity of life history strategies of this species.

关键词： Coilia mystus Oujiang River Estuary Zhujiang(Pearl) River Estuary habitat use otolith microchemistry

Fractal Behaviour of Atomic Scale Microstructures:an Introduction

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Rare Metals 1993年第3期12卷 227-228页

作者：沙维 Department of Materials Science and Metallurgy University of CambridgePembroke StreetCambridge CB2 3QZUK

The properties of all materials depend largely on their chemical *** analysis by using the atom probe suggests that it is necessary to invent new parameters to describe some aspects of *** and calculation work indicates that fractal dimension can be used to describe structural aspects not readily expressible with normal *** application of fractal concept in mate- rials studies will enable us to understand from a brand-new angle the ultra-fine microstructures of materials.

关键词： Fractal dimension Atomic scale microstructure Fe-Cr based alloys microchemistry

Current Capabilities of Microanalytical Technology as Applied to Geomaterials

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Acta Geologica Sinica(English Edition) 2015年第A2期89卷 96-96页

作者： WIEDENBECK Michael SIMS Laboratory

Technological progress over recent years has brought a number of new instrumental methods for characterizing the chemical or isotopic compositions of materials at or below the nanogram sampling scale, roughly equivalent to a volume of 400 μm2 in a silicate mineral. A decade ago instrumentation capable of working at such a fine scale was largely limited to electron-based,

关键词： Technological innovations microchemistry Isotopes