The harmful raphidophyte Chattonella (Raphidophyceae) in Western Pacific: Its red tides and associated fisheries damage over the past 50 years (1969–2019)

Lum, Wai Mun; Benico, Garry; Doan-Nhu, Hai; Furio, Elsa F.; Leaw, Chui Pin; Leong, Sandric Chee Yew; Lim, Po Teen; Lim, Weol Ae; Lirdwitayaprasit, Thaithaworn; Lü, Songhui; Muawanah,; Nguyen, Nguyen Van; Orlova, T. Yu.; Rachman, Arief; Sakamoto, Setsuko; Takahashi, Kazuya; Teng, Sing Tung; Thoha, Hikmah; Wang, Pengbin; Yñiguez, Aletta T.; Wakita, Kazumi; Iwataki, Mitsunori

doi:10.1016/j.hal.2021.102070

Cited by 22 publications

(22 citation statements)

References 71 publications

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“…Two strains were axenic and the others were not. We first confirmed that all strains belonged to Chattonella by analyzing sequences of the large subunit (LSU) D1-D2 domain of rDNA (Figure 1) using the method of Shikata et al [34] and Lum et al [3]. The strains were sub-cultured in 50-mL Erlenmeyer flasks containing 25 mL of modified SWM-3 medium [35] with a salinity of 32, at 22 or 25 • C, under 400 µmol photons m −2 s −1 of white fluorescent irradiation on a 14-h:10-h light:dark cycle (light period, 0600 to 2000 local time).…”

Section: Chattonella Strainsmentioning

confidence: 76%

“…A part of red tides adversely affects fisheries and tourism [1]. The Chattonella marina complex (hereafter referred to as Chattonella) is a marine raphidophyte that forms red tides, causing tremendous mortality of aquacultured organisms, mainly fish, in temperate coastal waters around the world [2,3]. This raphidophyte includes Chattonella antiqua, C. marina, C. ovata, and C. minima, which were formerly distinguished by morphological features [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Superoxide Production by the Red Tide-Producing Chattonella marina Complex (Raphidophyceae) Correlates with Toxicity to Aquacultured Fishes

Shikata¹,

Yuasa

Kitatsuji

et al. 2021

Antioxidants

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The marine raphidophyte Chattonella marina complex forms red tides, causing heavy mortalities of aquacultured fishes in temperate coastal waters worldwide. The mechanism for Chattonella fish mortality remains unresolved. Although several toxic chemicals have been proposed as responsible for fish mortality, the cause is still unclear. In this study, we performed toxicity bioassays with red sea bream and yellowtail. We also measured biological parameters potentially related to ichthyotoxicity, such as cell size, superoxide (O2•−) production, and compositions of fatty acids and sugars, in up to eight Chattonella strains to investigate possible correlations with toxicity. There were significant differences in moribundity rates of fish and in all biological parameters among strains. One strain displayed no ichthyotoxicity even at high cell densities. Strains were categorized into three groups based on cell length, but this classification did not significantly correlate with ichthyotoxicity. O2•− production differed by a factor of more than 13 between strains at the late exponential growth phase. O2•− production was significantly correlated with ichthyotoxicity. Differences in fatty acid and sugar contents were not related to ichthyotoxicity. Our study supports the hypothesis that superoxide can directly or indirectly play an important role in the Chattonella-related mortality of aquacultured fishes.

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Section: Chattonella Strainsmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Superoxide Production by the Red Tide-Producing Chattonella marina Complex (Raphidophyceae) Correlates with Toxicity to Aquacultured Fishes

Shikata¹,

Yuasa

Kitatsuji

et al. 2021

Antioxidants

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“…Have an impact on the phytoplankton composition and increase the outbreak numbers of harmful red tide. [37,38] plant Would decrease functional richness and the species diversity in downstream area.…”

Section: Characteristicsmentioning

confidence: 99%

“…Downstream, estuarine, and adjacent marine ecosystems will all be affected by damming. Decreases in silicon concentrations and increases in nitrogen and phosphorus concentrations have been linked to changes in growth and species composition of phytoplankton communities, as well as increases in the frequency of harmful red tide outbreaks [37,38]. At present, Prorocentrum ranks as most frequent and disaster-associated red tide species, and has caused serious economic losses to fishing and aquaculture in the East China Sea [16].…”

Section: Effects Of Dam Construction On Ecosystems Of the Estuary And...mentioning

confidence: 99%

Review of Effects of Dam Construction on the Ecosystems of River Estuary and Nearby Marine Areas

Zhang¹,

Fang²,

Wang³

et al. 2022

Preprint

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Dams have made great contributions to human society, facilitating flood control, power generation, shipping, agriculture and industry. However, the construction of dams greatly impacts downstream ecological environments and nearby marine areas. To summarize these impacts, this review used recent research to comprehensively analyze how dam construction has affected river hydrology, geomorphology, and ecosystem of downstream reaches globally. Effects of dams on ecosystems occur through reduced river flow, reduced sediment flux, altered water temperature, changed estuary delta, altered composition and distribution of nutrients, altered structure and distribution of phytoplankton populations, caused habitat fragmentation, and blocked migration routes in river sections and adjacent seas. Besides, exploring new reservoir management strategies (including targeted control of dam storage and flushing sediment operations), banning fishing activities, and removing unnecessary dams (obsolete or small dams) are becoming crucial tools for ecosystem restoration.

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“…These impacts could be chemical accumulations (e.g., heavy metals, antifouling biocides, aquaculture medicinal products, polycyclic aromatic hydrocarbons, and warfare agents by anthropogenic inputs) [9][10][11][12][13][14][15], nutrient loads [8,11,12,16,17], organic matter deposited in sediment [11,12,18], and habitat destruction [8,19,20] as well as negative interaction of invasive species with wild fish [21,22]. Aquaculture is also known to cause an increase in eutrophication [23][24][25][26][27] and algal blooms [28][29][30][31] in coastal waters, a reduction in dissolved oxygen in seawater [32], and expanded dead zones for coastal waters [33,34]. In addition, the increased culture in coastal waters could overload the environmental carrying capacity [35] and cause outbreaks of diseases [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Environmental Concerns for Sustainable Mariculture in Coastal Waters of South-Central Vietnam

et al. 2022

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Mariculture provides an increasing seafood supply to a growing population. It also brings unintended consequences for the environment, resources, and sustainable development. In an attempt to evaluate the impacts of intensive mariculture of lobster in cages, the water quality and sediment quality in three South-Central regions of Vietnam, Xuan Dai Bay, Van Phong Bay, and Cam Ranh Bay, were monitored from April 2019 to May 2020. In each bay, two stations in the farming areas were compared to a non-farming reference station. The result showed no significant differences in the water quality parameters among the stations within each bay and between the bays. However, sediment quality noticeably differed between sites within each bay and between the bays. The accumulation of the observed parameters of sediment in farming areas was higher than in non-farming areas. In the Cam Ranh Bay, the concentration of organic carbon, total nitrogen, and total phosphorus in the sediment in farming areas was approximately 1.4 times higher compared to non-farming areas. Similar results were found in Van Phong Bay and Xuan Dai Bay with different magnitudes. Additionally, the difference in the sulfide concentration in the sediment of Van Phong Bay was notable for its better environmental quality than the other two. The findings indicated that mariculture wastes would accumulate in the sediment, and decompose over time, causing sediment degradation, which may affect the benthic biota in coastal waters.

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The harmful raphidophyte Chattonella (Raphidophyceae) in Western Pacific: Its red tides and associated fisheries damage over the past 50 years (1969–2019)

Cited by 22 publications

References 71 publications

Superoxide Production by the Red Tide-Producing Chattonella marina Complex (Raphidophyceae) Correlates with Toxicity to Aquacultured Fishes

Superoxide Production by the Red Tide-Producing Chattonella marina Complex (Raphidophyceae) Correlates with Toxicity to Aquacultured Fishes

Review of Effects of Dam Construction on the Ecosystems of River Estuary and Nearby Marine Areas

Environmental Concerns for Sustainable Mariculture in Coastal Waters of South-Central Vietnam

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