NDLI: Preliminary investigation on otolith microchemistry of naked carp (Gymnocypris przewalskii) in Lake Qinghai, China

Content Provider	Springer Nature Link
Author	Liu, Hongbo Jiang, Tao Tan, Xichang Yang, Jian
Copyright Year	2012
Abstract	The paper represents the first otolith study on trace element (Sr, Mg) concentrations of naked carp (Gymnocypris przewalskii), an endemic and endangered migratory species in high-altitude Lake Qinghai and its tributaries of China, using electron probe microanalysis (EPMA). Results from life-history transect analyses and X-ray intensity maps suggested that the general reference criterion for discrimination of the salinity habitats of freshwater, brackish and seawater by the otolith Sr:Ca ratio of diadromous fish cannot be used as a reliable indicator for reconstructing the migration history of naked carp between different habitats. On the contrary, Mg concentrations and Mg:Ca ratios were found inconsistent in all otolith samples of G. przewalskii. The otolith regions with higher Mg concentrations (greenish) might coincide with the period that yolk provides nutrition to G. przewalskii. The lower Mg:Ca ratios in most regions of otolith showed that Mg in G. przewalskii might be regulated to that low level during its lifespan in Lake Qinghai. This suggests that the distinct EPMA approach can provide new visualization insight into the ontogenetic and migration patterns of G. przewalskii.
Starting Page	455
Ending Page	461
Page Count	7
File Format	PDF
ISSN	03781909
Journal	Environmental Biology of Fishes
Volume Number	95
Issue Number	4
e-ISSN	15735133
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-07-14
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Electron probe microanalysis Strontium Calcium Magnesium Migration Nature Conservation Zoology Freshwater & Marine Ecology Animal Systematics/Taxonomy/Biogeography Environment
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Ecology, Evolution, Behavior and Systematics

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