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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50083

Title: WINTER ABUNDANCE AND SPECIES COMPOSITION OF ANCHOVY LARVAE ASSOCIATED WITH HYDROLOGICAL CONDITIONS IN THE COASTAL WATERS OF TANSHUI, TAIWAN
Authors: Yi-Chen Wang
Wen-Yu Chen
Yu-Kai Chen
Yi-Chun Kuo
Ming-An Lee
Contributors: 國立臺灣海洋大學:環境生物與漁業科學學系
Keywords: El Niño
anchovy larvae
Engraulis japonicus
Date: 2018-06
Issue Date: 2018-09-14T07:05:20Z
Publisher: Journal of Marine Science and Technology
Abstract: Abstract: The present study investigated changes in the winter abundance
and composition of anchovy larvae associated with hydrological
conditions in the coastal waters of Tanshui, Taiwan.
A survey during the period of 2008-2014 revealed that the
abundance of larvae caught using fyke nets varied from 123.9
to 28,314 ind/1000 m3
, whereas the surface water temperature
and salinity ranged from approximately 17C to 18C and 32.84
psu to 33.72 psu, respectively. Engraulis japonicus (Japanese
anchovy), Encrasicholina punctifer (buccaneer anchovy), and
E. heteroloba (shorthead anchovy) were the dominant species
of anchovy larvae, accounting for 0.17%-93.56%. In the La Niña
years 2008 and 2011, Japanese anchovy was dominant, with a
relatively high abundance of approximately 128-25,432 ind/1000
m3
when the current at 10-m depth moved southwestward. In the
El Niño years 2010 and 2014, buccaneer anchovy and shorthead
anchovy were the dominant species, with a relatively low abundance
of approximately 0.21-8,334.38 ind/1000 m3
when the
current at 10 m depth moved northeastward. The change in the
pattern of currents induced by El Niño-Southern Oscillation
events may be crucial in determining the winter abundance and
species composition of anchovy larvae in the coastal waters of
Tanshui. Additionally, an elevated sea surface water temperature
probably reduces the abundance of Japanese anchovy and increases
that of buccaneer anchovy and shorthead anchovy in
winter.
Relation: 26(3) pp.465-474
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50083
Appears in Collections:[環境生物與漁業科學學系] 期刊論文

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