scholarly journals Benthic dinoflagellates in Korean waters

ALGAE ◽  
2021 ◽  
Vol 36 (2) ◽  
pp. 91-109
Author(s):  
An Suk Lim ◽  
Hae Jin Jeong
Keyword(s):  
Korean Waters ◽  
Benthic Dinoflagellates

scholarly journals Survey on Perkinsus Species in Manila Clam Ruditapes philippinarum in Korean Waters Using Species-Specific PCR

2017 ◽  
Vol 52 (4) ◽  
pp. 202-205 ◽  
Author(s):  
Hyun-Sil Kang ◽  
Hyun-Sung Yang ◽  
Kimberly S. Reece ◽  
Young-Ghan Cho ◽  
Hye-Mi Lee ◽  
...  
Keyword(s):  
Ruditapes Philippinarum ◽  
Manila Clam ◽  
Korean Waters ◽  
Specific Pcr ◽  
Species Specific

scholarly journals Asynchrony of Gambierdiscus spp. Abundance and Toxicity in the U.S. Virgin Islands: Implications for Monitoring and Management of Ciguatera

Toxins ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 413
Author(s):  
Justin D. Liefer ◽  
Mindy L. Richlen ◽  
Tyler B. Smith ◽  
Jennifer L. DeBose ◽  
Yixiao Xu ◽  
...  
Keyword(s):  
Harmful Algal Blooms ◽  
Algal Blooms ◽  
Environmental Parameters ◽  
Virgin Islands ◽  
Coastal Communities ◽  
Trophic Levels ◽  
Us Virgin Islands ◽  
Benthic Dinoflagellates ◽  
The Mean ◽  
The U.S

Ciguatera poisoning (CP) poses a significant threat to ecosystem services and fishery resources in coastal communities. The CP-causative ciguatoxins (CTXs) are produced by benthic dinoflagellates including Gambierdiscus and Fukuyoa spp., and enter reef food webs via grazing on macroalgal substrates. In this study, we report on a 3-year monthly time series in St. Thomas, US Virgin Islands where Gambierdiscus spp. abundance and Caribbean-CTX toxicity in benthic samples were compared to key environmental factors, including temperature, salinity, nutrients, benthic cover, and physical data. We found that peak Gambierdiscus abundance occurred in summer while CTX-specific toxicity peaked in cooler months (Feb–May) when the mean water temperatures were approximately 26–28 °C. These trends were most evident at deeper offshore sites where macroalgal cover was highest year-round. Other environmental parameters were not correlated with the CTX variability observed over time. The asynchrony between Gambierdiscus spp. abundance and toxicity reflects potential differences in toxin cell quotas among Gambierdiscus species with concomitant variability in their abundances throughout the year. These results have significant implications for monitoring and management of benthic harmful algal blooms and highlights potential seasonal and highly-localized pulses in reef toxin loads that may be transferred to higher trophic levels.

NavalOperations in Korean Waters

1991 ◽  
Vol 9 (1) ◽  
pp. 294-306
Author(s):  
Joseph R. Morgan
Keyword(s):  
Korean Waters

scholarly journals Report for eight species of Salpinae (Thaliacea: Salpida: Salpidae) from Korean waters

2017 ◽  
Vol 10 (4) ◽  
pp. 453-459
Author(s):  
Sunwoo Kim ◽  
Jung-Hye Won ◽  
Chang-Bae Kim
Keyword(s):  
Korean Waters

Two new species of the genus Syngastes (Copepoda, Harpacticoida, Tegastidae) from South Korea

Crustaceana ◽  
2016 ◽  
Vol 89 (4) ◽  
pp. 431-458 ◽  
Author(s):  
Jong Guk Kim ◽  
Jong Guk Kim ◽  
Tae Won Jung ◽  
Jong Guk Kim ◽  
Tae Won Jung ◽  
...  
Keyword(s):  
New Species ◽  
South Korea ◽  
First Record ◽  
Exopodal Segment ◽  
Key To Species ◽  
Korean Waters ◽  
The Family ◽  
Two New Species ◽  
Almost All

Herein two new species of the genusSyngastesMonard, 1924 are described from South Korea, with detailed descriptions and illustrations. Both new copepods,Syngastesmulticavussp. nov. andS. pseudofoveatussp. nov., have two inner setae on the first exopodal segment of P2 and P3.Syngastesmulticavussp. nov. most closely resemblesS. gibbosusBartsch, 1999 reported from Australia, as they both have a five-segmented antennule in the female. However,Syngastesmulticavussp. nov. has a rounded body outline instead of the gibbose outline observed inS. gibbosus.Syngastespseudofoveatussp. nov. resemblesS. foveatusBartsch, 1994 in almost all aspects. However, they differ clearly in the number of setae on the first exopodal segment of P2 and P3. We also provide a key to species of the genusSyngastesworldwide. The present study is the first record of the family Tegastidae in Korean waters.

Max Planck Tests the Korean Waters

Science ◽  
2010 ◽  
Vol 328 (5977) ◽  
pp. 414-415
Author(s):  
D. Normile ◽  
G. Vogel
Keyword(s):  
Max Planck ◽  
Korean Waters

scholarly journals Investigation of phagotrophy in natural assemblages of the benthic dinoflagellates Ostreopsis, Prorocentrum and Coolia

2017 ◽  
Vol 65 (3) ◽  
pp. 392-399 ◽  
Author(s):  
Eliliane Vasconcelos Corrêa Almada ◽  
Wanderson Fernandes de Carvalho ◽  
Silvia Mattos Nascimento
Keyword(s):  
Fluorescence Microscopy ◽  
Rio De Janeiro ◽  
Nutritional Ecology ◽  
Harmful Algae ◽  
Benthic Dinoflagellates ◽  
Nutritional Strategy ◽  
Nutritional Strategies ◽  
Harmful Species

Abstract Mixotrophy has been shown to be a common trait among dinoflagellates and its importance in the nutritional ecology of harmful algae has been hypothesized. Benthic harmful species have not been extensively investigated as their planktonic counterparts and there are major gaps in the knowledge of their nutritional strategies. In this study the occurrence of phagotrophy was investigated in natural assemblages of benthic dinoflagellates using epi-fluorescence microscopy with DAPI and LysoSensor staining. The study was conducted at five sites along the coast of Rio de Janeiro that were visited in January, August and December 2010. In total, 1659 dinoflagellate cells were observed. From these, only 0.4% of 1195 Ostreopsis cf. ovata and 2.2% of 134 Coolia spp. cells presented evidence of phagotrophy with vacuoles stained by LysoSensor or a DAPI (4',6-diamidino-2-phenylindole) stained inclusion. Stained vacuoles were not registered in the 330 Prorocentrum spp. cells observed. Few O. cf. ovata cells contained round red inclusions ("red spots") that were not stained either by DAPI or LysoSensor, suggesting that these structures are not ingested prey. The results showed that phagotrophy was not a frequent nutritional strategy in benthic dinoflagellates during the study period.

Cetacean Strandings in Korean Waters

2016 ◽  
Vol 70 (1) ◽  
pp. 35-44
Author(s):  
Kyung-Jun Song
Keyword(s):  
Korean Waters
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