Seasonal Population Structure of the Copepod Temora turbinata (Dana, 1849) in the Kuroshio Current Edge, Southeastern East China Sea
Source abstract
Abstract
The abundance of adult males, females, and copepodites, and sex ratio of a Temora turbinata population and seawater hydrology were studied from 2018 to 2019 in waters off northeast Taiwan, northwest Pacific Ocean. The hydrological parameters showed significant differences between sampling months caused by interactions of Kuroshio, East China Sea water, and the China Coastal Current. The highest average abundance was recorded from the June 2018 cruise with 2903.92 ± 3499.47 (inds. m−3), followed by a cruise in June 2019 with an average abundance of 1990.64 ± 1401.55 (inds. m−3). The sex ratio ranged between 0.25 and 2.33; the records were significantly higher in samples of June 2018 than during other sampling cruises (one-way ANOVA). The spatiotemporal distribution of T. turbinata showed a clear pattern of seasonal changes among sampling stations and distribution zones. Abundance of females and copepodites correlated significantly positive (r = 0.755, p < 0.001), whereas sex ratio (r = 0.247, p = 0.119) did not correlate significantly. The present study revealed that the abundance of T. turbinate was highest in June and was positively correlated with seawater temperature; furthermore, this is the first time the in situ sex ratio of T. turbinata in western Pacific waters has been reported.
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Research context
OpenAlex topics: Marine Biology and Ecology Research · Marine and fisheries research · Coral and Marine Ecosystems Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Marine Biology, National Taiwan Ocean University, Keelung 202301, Taiwan
Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
Center of Excellence for Ocean Engineering, National Taiwan Ocean University, Keelung 202301, Taiwan
Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 202301, Taiwan
Funding
Ministry of Science and Technology, Taiwan · Center of Excellence for Ocean Engineering, NTOU, Taiwan
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