Coral Disease in Japan

Wada, Naohiro; Ohdera, Aki; Mano, Nobuhiro

doi:10.1007/978-981-10-6473-9_4

Cited by 10 publications

(6 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Comparatively, our study indicated that the total number of GAs was slightly less than in earlier reports [3] but the number of GAs per colony was similar. Within the Japanese archipelago, our study can be regarded as one of the most intensive surveys informing about GAs prevalence on Montipora, similar to studies in the Sekisei Lagoon [25,29,55]. Results from Sekisei Lagoon indicate GAs are on the rise [25,55], in accordance with our findings.…”

Section: Discussionsupporting

confidence: 88%

“…Within the Japanese archipelago, our study can be regarded as one of the most intensive surveys informing about GAs prevalence on Montipora, similar to studies in the Sekisei Lagoon [25,29,55]. Results from Sekisei Lagoon indicate GAs are on the rise [25,55], in accordance with our findings.…”

Section: Discussionsupporting

confidence: 88%

“…The reef edge generally extends out approximately 70-100 m from the coast but can reach up to 250-400 m in the south (Figure 1). Encrusting colonies of genus Montipora, the primary host of BBD and GAs in the Ryukyu Archipelago [3,5,55], are common on the reefs of Sesoko [3,22] as well as other corals, such as tabular Acropora [54], and massive/submassive Porites [56,57].…”

Section: Study Areamentioning

confidence: 99%

See 2 more Smart Citations

Four-Year Field Survey of Black Band Disease and Skeletal Growth Anomalies in Encrusting Montipora spp. Corals around Sesoko Island, Okinawa

et al. 2022

Self Cite

View full text Add to dashboard Cite

The Indo-Pacific zooxanthellate scleractinian coral genus Montipora is the host of many coral diseases. Among these are cyanobacterial Black Band Disease (BBD) and Skeletal Growth Anomalies (GAs), but in general data on both diseases are lacking from many regions of the Indo-Pacific, including from Okinawa, southern Japan. In this study, we collected annual prevalence data of Black Band Disease (BBD) and Skeletal Growth Anomalies (GAs) affecting the encrusting form of genus Montipora within the shallow reefs of the subtropical Sesoko Island (off the central west coast of Okinawajima Island) from summer to autumn for four years (2017 to 2020). In 2020 Montipora percent coverage and colony count were also assessed. Generalized Linear Models (GLM) were used to understand the spatial and temporal variation of both BBD and GAs in the nearshore (NE) and reef edge (RE) sites, which revealed higher probability of BBD occurrence in RE sites. BBD prevalence was significantly higher in 2017 in some sites than all other years with site S12 having significant higher probability during all four surveyed years. In terms of GAs, certain sites in 2020 had higher probability of occurrence than during the other years. While the general trend of GAs increased from 2017 to 2020, it was observed to be non-fatal to colonies. In both diseases, the interaction between sites and years was significant. We also observed certain BBD-infected colonies escaping complete mortality. BBD progression rates were monitored in 2020 at site S4, and progression was related to seawater temperatures and was suppressed during periods of heavy rain and large strong typhoons. Our results suggest that higher BBD progression rates are linked with high sea water temperatures (SST > bleaching threshold SST) and higher light levels (> 1400 µmol m−2 s−1), indicating the need for further controlled laboratory experiments. The current research will help form the basis for continued future research into these diseases and their causes in Okinawa and the Indo-Pacific Ocean.

show abstract

Section: Discussionsupporting

confidence: 88%

Section: Discussionsupporting

confidence: 88%

Section: Study Areamentioning

confidence: 99%

See 1 more Smart Citation

Four-Year Field Survey of Black Band Disease and Skeletal Growth Anomalies in Encrusting Montipora spp. Corals around Sesoko Island, Okinawa

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Various methods have been developed to identify marine microbial pathogens, including molecular approaches (Pollock et al, 2011;Zhenyu et al, 2013;Aeby et al, 2019), lipid measurements (Yamashiro et al, 2001), immunological tools (Palmer et al, 2008) and a variety of histological techniques (Pollock et al, 2011;Ushijima et al, 2012;Work and Meteyer, 2014;Wada et al, 2018). To date, several microbial pathogens have been confirmed as the causative agents of coral diseases.…”

Section: Potential Microbial and Environmental Agentsmentioning

confidence: 99%

“…Multiple coral diseases have been identified in the Indo-Pacific reefs. For example, seven diseases have been identified in the Great Barrier Reef (Willis et al, 2004), while ten identified along the Japanese reefs (Wada et al, 2018). In other locations, twelve diseases and signs of compromised health have been reported in Hawaii (Aeby et al, 2011), Palau (Golbuu et al, 2005) and Thailand (Samsuvan et al, 2019), while seven reported in the Philippines (Kaczmarsky, 2006;Haapkylä et al, 2009) and Indonesia (Shidqi et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Prevalence of coral diseases in the coastal waters of Kota Kinabalu: The potential of microbial and environmental agents

Zuhairi, A. N.,

Khodzori, F. A.,

Oslan, S. N. H.

et al. 2023

MJM

View full text Add to dashboard Cite

Aims:The Indo-Pacific coral populations are under increasing threats from bleaching events and coral disease outbreaks. However, there is a significant gap in data and research on coral diseases in Malaysian waters. This study aimed to assess the prevalence of coral diseases and signs of compromised health at 27 reef sites in the coastal waters of Kota Kinabalu, Sabah. Methodology and results: We conducted coral surveys using the Coral Video Transect (CVT) method and measured the prevalence using Coral Point Count with Excel Extension (CPCe) software. Our findings indicated that the majority of reefs appeared healthy (82.9% ± 1.8), while a smaller percentage displayed signs of disease (5.0% ± 0.6) or compromised health (12.1% ± 1.5). Reef sites exposed to higher levels of human activities exhibited a greater prevalence of coral diseases (e.g. yellow band disease, ulcerative white spots and skeletal eroding band) and signs of compromised health (e.g. sediment necrosis, skeletal damage and algal overgrowth). A total of 51 scleractinian hard coral genera were affected, with Porites and Acropora being the most predominantly affected by sediment necrosis and skeletal damage, respectively. A review of molecular approaches identified various coral pathogens, including Vibrio spp., which could potentially contribute to the occurrence of coral disease. Conclusion, significance and impact of study: Unsustainable coastal development with unregulated human activities can exacerbate the severity of coral diseases and signs of compromised health. Therefore, effective management plans by relevant authorities are required to sustainably manage coral reefs in Kota Kinabalu.

show abstract