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 and Benico, Garry and Doan-Nhu, Hai and Furio, Elsa and Leaw, Chui Pin and Leong, Sandric Chee Yew and Lim, Po Teen and Lim, Weol Ae and Lirdwitayaprasit, Thaithaworn and Lu, Songhui and Muawanah, Umi and Nguyen, Nguyen Van and Orlova, Tatiana Yu and Rachman, Arief and Sakamoto, Setsuko and Takahashi, Kazuya and Teng, Sing Tung and Thoha, Hikmah and Wang, Pengbin and Yniguez, Aletta T. and Wakita, Kazumi and Iwataki, Mitsunori (2021) The harmful raphidophyte Chattonella (Raphidophyceae) in Western Pacific: Its red tides and associated fisheries damage over the past 50 years (1969-2019). Harmful Algae, 107. ISSN 1568-9883, DOI

Full text not available from this repository.


Red tides and associated fisheries damage caused by the harmful raphidophyte Chattonella were reassessed based on the documented local records for 50 years to understand the distribution and economic impacts of the harmful species in the Western Pacific. Blooms of Chattonella with fisheries damage have been recorded in East Asia since 1969, whereas they have been only recorded in Southeast Asia since the 1980s. Occurrences of Chattonella have been documented from six Southeast Asian countries, Indonesia, Malaysia, Philippines, Singapore, Thailand and Viet Nam, with mass mortalities mainly of farmed shrimp in 1980-1990s, and farmed fish in 2000-2010s. These occurrences have been reported with the names of C. antiqua, C. marina, C. ovata, C. subsalsa and Chattonella sp., owing to the difficulty of microscopic species identification, and many were not supported with molecular data. To determine the distribution of C. marina complex and C. subsalsa in Southeast Asia, molecular phylogeny and microscopic observation were also carried out for cultures obtained from Indonesia, Malaysia, Japan, Philippines, Russia, Singapore and Thailand. The results revealed that only the genotype of C. marina complex has been detected from East Asia (China, Japan, Korea and Russia), whereas both C. marina complex (Indonesia and Malaysia) and C. subsalsa (Philippines, Singapore and Thailand) were found in Southeast Asia. Ejection of mucocysts has been recognized as a diagnostic character of C. subsalsa, but it was also observed in our cultures of C. marina isolated from Indonesia, Malaysia, Japan, and Russia. Meanwhile, the co-occurrences of the two harmful Chattonella species in Southeast Asia, which are difficult to distinguish solely based on their morphology, suggest the importance of molecular identification of Chattonella genotypes for further understanding of their distribution and negative impacts.

Item Type: Article
Funders: Japanese JSPS Kakenhi [19H03027] [19KK0160 (MI)], Malaysian MOHE HICOE IOES and FRGS, Vietnamese VAST [NVCC17.02/21-21 (HD-N)], Japanese Fund-in-Trust (MEXT)
Uncontrolled Keywords: Chattonella; Chattonella marina; Chattonella subsalsa; Distribution; East Asia; Fisheries damage; Mucocyst; Population structure; Southeast Asia
Subjects: Q Science > QH Natural history > QH426 Genetics
T Technology > TD Environmental technology. Sanitary engineering
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences
Depositing User: Ms Zaharah Ramly
Date Deposited: 14 Sep 2022 00:20
Last Modified: 14 Sep 2022 00:20

Actions (login required)

View Item View Item