Spatial and Seasonal Variability of Reef Bacterial Communities in the Upper Gulf of Thailand

Reefs at Ko Samae San (S), Khao Ma Cho (K), and Ko Tao Mo (T), in the Gulf of Thailand (GoT) represent a biodiversity hotspot, and bacteria play significant roles in maintaining the health of these coral reefs and their biogeochemical cycles. Therefore, this study analyzed bacterial communities (microbiota) from healthy corals and nearby seawater and sediment, using B-RISA and 16S rRNA gene sequencing. Sampling was done in one dry and one wet season to provide an initial assessment of variation with environmental conditions. The most prevalent coral species were Porites lutea, Platygyra sinensis, Acropora humilis, and Acropora millepora. The B-RISA and the sequencing results were correlated, which increased confidence the results. The microbiota varied among corals, seawater, and sediment and between the wet and dry seasons. Percentages of bacteria with known functions varied among sample types and seasons, and their relative abundances supported previously reported essential functions, such as prevention of disease (e.g., Pseudoalteromonas, Psychrobacter, and Cobetia were more abundant on corals in the dry season). Pearson's correlations and multiple factor regressions identified dissolved oxygen (DO), temperature, salinity, and density as significant influences on the microbiota. The equations estimated the relative abundance of a community comprising 147 bacterial genera, as well as the relative abundance of Pseudomonas, Clostridium, Verrucomicrobium, and Epulopiscium (R2 ≥ 0.721). These results represent the first descriptions of microbiota from corals, and surrounding seawater and sediments in the upper GoT

Microbial and Small Eukaryotes Associated With Reefs in the Upper Gulf of Thailand

Reef sites of Ko Samae San (S), Khao Ma Cho (K) and Ko Tao Mo (T) in the upper Gulf of Thailand have abundant corals and represent a hotspot of marine biodiversity. Coral reefs serve as major networks of food and energy, where bacteria, microbial eukaryotes (fungi) and small eukaryotes play significant roles as primary producers that convert inorganic compounds to organic compounds, degraders of toxic substances, and recyclers. These functions sustain food and energy supplies. Advances in metagenomics and next-generation sequencing can provide knowledge of diversity without limitations imposed by media and other conditions associated with laboratory cultures. Scientists have researched bacterial diversity of coral sites; however, a database for fungi and small eukaryotes from Thailand’s sites with abundant corals is lacking. The present study combined fungal ribosomal intergenic spacer analysis (F-RISA) and 18S rRNA gene sequencing to unveil the first culture-independent microbial and small eukaryotes from these sites at two times and across four species of coral (Porites lutea, Platygyra sinensis, Acropora humilis, and Acropora millepora), seawater and sediment. Results showed that the small eukaryotic communities on corals were distinct from communities in the surrounding seawater and sediment. The communities were relatively similar at the three sites and during the two periods of time. Pearson’s correlations indicated the community diversity were associated with water quality (e.g., dissolved oxygen concentrations and density of water)

Growth, sensory and chemical characterization of Mediterranean yellowtail (Seriola dumerili) fed diets with partial replacement of fish meal by other protein sources

[EN] An 84-day trial was performed to assess the use of alternative protein sources in Seriola dumerili. Three diets were used, FM100 diet, as a control diet without fishmeal substitution, and FM66 and FM33 diets with a fishmeal replacement of 330 g/kg and 660 g/kg, respectively. At the end of experiment, fish fed the FM66 diet showed the no differences in growth, nutritional parameters and fatty acid composition. Heavy metals present some differences but are always lower than risk levels. In sensory analysis, differences between diets appeared in pH and color, and also in some texture parameters between FM33 and the other two diets. No differences appeared between diets related to flavor. In summary, long periods of feeding with high fish meal substitution diets, affects Seriola dumerili growth; despite this the quality of the fillet was not affected even with a 66 % of substitution.This project was financed by "Generalitat Valenciana. Ayudas para grupos de investigacion consolidables."Monge-Ortiz, R.; Martínez-Llorens, S.; Lemos-Neto, M.; Falco, S.; Pagán Moreno, MJ.; Godoy-Olmos, S.; Jover Cerda, M.... (2020). Growth, sensory and chemical characterization of Mediterranean yellowtail (Seriola dumerili) fed diets with partial replacement of fish meal by other protein sources. Aquaculture Reports. 18:1-10. https://doi.org/10.1016/j.aqrep.2020.100466S11018Abbas, K. A., Mohamed, A., Jamilah, B., & Ebrahimian, M. (2008). A Review on Correlations between Fish Freshness and pH during Cold Storage. American Journal of Biochemistry and Biotechnology, 4(4), 416-421. doi:10.3844/ajbbsp.2008.416.421Álvarez, A., García García, B., Garrido, M. D., & Hernández, M. D. (2008). The influence of starvation time prior to slaughter on the quality of commercial-sized gilthead seabream (Sparus aurata) during ice storage. Aquaculture, 284(1-4), 106-114. doi:10.1016/j.aquaculture.2008.07.025AMIARD, J., AMIARDTRIQUET, C., BARKA, S., PELLERIN, J., & RAINBOW, P. (2006). Metallothioneins in aquatic invertebrates: Their role in metal detoxification and their use as biomarkers. Aquatic Toxicology, 76(2), 160-202. doi:10.1016/j.aquatox.2005.08.015Baeverfjord, G., Refstie, S., Krogedal, P., & Åsgård, T. (2006). Low feed pellet water stability and fluctuating water salinity cause separation and accumulation of dietary oil in the stomach of rainbow trout (Oncorhynchus mykiss). Aquaculture, 261(4), 1335-1345. doi:10.1016/j.aquaculture.2006.08.033Baeza-Ariño, R., Martínez-Llorens, S., Nogales-Mérida, S., Jover-Cerda, M., & Tomás-Vidal, A. (2014). Study of liver and gut alterations in sea bream,Sparus aurataL., fed a mixture of vegetable protein concentrates. Aquaculture Research, 47(2), 460-471. doi:10.1111/are.12507Bell, J. G., McEvoy, J., Tocher, D. R., McGhee, F., Campbell, P. J., & Sargent, J. R. (2001). Replacement of Fish Oil with Rapeseed Oil in Diets of Atlantic Salmon (Salmo salar) Affects Tissue Lipid Compositions and Hepatocyte Fatty Acid Metabolism. The Journal of Nutrition, 131(5), 1535-1543. doi:10.1093/jn/131.5.1535Benedito-Palos, L., Navarro, J. C., Sitjà-Bobadilla, A., Gordon Bell, J., Kaushik, S., & Pérez-Sánchez, J. (2008). High levels of vegetable oils in plant protein-rich diets fed to gilthead sea bream (Sparus aurataL.): growth performance, muscle fatty acid profiles and histological alterations of target tissues. British Journal of Nutrition, 100(5), 992-1003. doi:10.1017/s0007114508966071Bjerkeng, B., Refstie, S., Fjalestad, K. T., Storebakken, T., Rødbotten, M., & Roem, A. J. (1997). Quality parameters of the flesh of Atlantic salmon (Salmo salar) as affected by dietary fat content and full-fat soybean meal as a partial substitute for fish meal in the diet. Aquaculture, 157(3-4), 297-309. doi:10.1016/s0044-8486(97)00162-2De Francesco, M., Parisi, G., Médale, F., Lupi, P., Kaushik, S. J., & Poli, B. M. (2004). Effect of long-term feeding with a plant protein mixture based diet on growth and body/fillet quality traits of large rainbow trout (Oncorhynchus mykiss). Aquaculture, 236(1-4), 413-429. doi:10.1016/j.aquaculture.2004.01.006DE FRANCESCO, M., PARISI, G., PÉREZ-SÁNCHEZ, J., GÓMEZ-RéQUENI, P., MÉDALE, F., KAUSHIK, S. J., … POLI, B. M. (2007). Effect of high-level fish meal replacement by plant proteins in gilthead sea bream (Sparus aurata) on growth and body/fillet quality traits. Aquaculture Nutrition, 13(5), 361-372. doi:10.1111/j.1365-2095.2007.00485.xEstruch, G., Collado, M. C., Peñaranda, D. S., Tomás Vidal, A., Jover Cerdá, M., Pérez Martínez, G., & Martinez-Llorens, S. (2015). Impact of Fishmeal Replacement in Diets for Gilthead Sea Bream (Sparus aurata) on the Gastrointestinal Microbiota Determined by Pyrosequencing the 16S rRNA Gene. PLOS ONE, 10(8), e0136389. doi:10.1371/journal.pone.0136389Estruch, G., Collado, M. C., Monge-Ortiz, R., Tomás-Vidal, A., Jover-Cerdá, M., Peñaranda, D. S., … Martínez-Llorens, S. (2018). Long-term feeding with high plant protein based diets in gilthead seabream (Sparus aurata, L.) leads to changes in the inflammatory and immune related gene expression at intestinal level. BMC Veterinary Research, 14(1). doi:10.1186/s12917-018-1626-6Estruch, G., Tomás-Vidal, A., El Nokrashy, A. M., Monge-Ortiz, R., Godoy-Olmos, S., Jover Cerdá, M., & Martínez-Llorens, S. (2018). Inclusion of alternative marine by-products in aquafeeds with different levels of plant-based sources for on-growing gilthead sea bream (Sparus aurata, L.): effects on digestibility, amino acid retention, ammonia excretion and enzyme activity. Archives of Animal Nutrition, 72(4), 321-339. doi:10.1080/1745039x.2018.1472408Estruch, G., Martínez-Llorens, S., Tomás-Vidal, A., Monge-Ortiz, R., Jover-Cerdá, M., Brown, P. B., & Peñaranda, D. S. (2020). Impact of high dietary plant protein with or without marine ingredients in gut mucosa proteome of gilthead seabream (Sparus aurata, L.). Journal of Proteomics, 216, 103672. doi:10.1016/j.jprot.2020.103672Fountoulaki, E., Vasilaki, A., Hurtado, R., Grigorakis, K., Karacostas, I., Nengas, I., … Alexis, M. N. (2009). Fish oil substitution by vegetable oils in commercial diets for gilthead sea bream (Sparus aurata L.); effects on growth performance, flesh quality and fillet fatty acid profile. Aquaculture, 289(3-4), 317-326. doi:10.1016/j.aquaculture.2009.01.023Francis, G., Makkar, H. P. ., & Becker, K. (2001). Antinutritional factors present in plant-derived alternate fish feed ingredients and their effects in fish. Aquaculture, 199(3-4), 197-227. doi:10.1016/s0044-8486(01)00526-9Korkmaz Görür, F., Keser, R., Akçay, N., & Dizman, S. (2012). Radioactivity and heavy metal concentrations of some commercial fish species consumed in the Black Sea Region of Turkey. Chemosphere, 87(4), 356-361. doi:10.1016/j.chemosphere.2011.12.022Hu, L., Yun, B., Xue, M., Wang, J., Wu, X., Zheng, Y., & Han, F. (2013). Effects of fish meal quality and fish meal substitution by animal protein blend on growth performance, flesh quality and liver histology of Japanese seabass (Lateolabrax japonicus). Aquaculture, 372-375, 52-61. doi:10.1016/j.aquaculture.2012.10.025Izquierdo, M. S., Obach, A., Arantzamendi, L., Montero, D., Robaina, L., & Rosenlund, G. (2003). Dietary lipid sources for seabream and seabass: growth performance, tissue composition and flesh quality. Aquaculture Nutrition, 9(6), 397-407. doi:10.1046/j.1365-2095.2003.00270.xIzquierdo, M. S., Montero, D., Robaina, L., Caballero, M. J., Rosenlund, G., & Ginés, R. (2005). Alterations in fillet fatty acid profile and flesh quality in gilthead seabream (Sparus aurata) fed vegetable oils for a long term period. Recovery of fatty acid profiles by fish oil feeding. Aquaculture, 250(1-2), 431-444. doi:10.1016/j.aquaculture.2004.12.001Jover, M., Garcı́a-Gómez, A., Tomás, A., De la Gándara, F., & Pérez, L. (1999). Growth of mediterranean yellowtail (Seriola dumerilii) fed extruded diets containing different levels of protein and lipid. Aquaculture, 179(1-4), 25-33. doi:10.1016/s0044-8486(99)00149-0Martínez-Llorens, S., Baeza-Ariño, R., Nogales-Mérida, S., Jover-Cerdá, M., & Tomás-Vidal, A. (2012). Carob seed germ meal as a partial substitute in gilthead sea bream (Sparus aurata) diets: Amino acid retention, digestibility, gut and liver histology. Aquaculture, 338-341, 124-133. doi:10.1016/j.aquaculture.2012.01.029MARTINS, D. A., VALENTE, L. M. P., & LALL, S. P. (2011). Partial replacement of fish oil by flaxseed oil in Atlantic halibut (Hippoglossus hippoglossus L.) diets: effects on growth, nutritional and sensory quality. Aquaculture Nutrition, 17(6), 671-684. doi:10.1111/j.1365-2095.2011.00869.xMatallanas, J., Casadevall, M., Carrasson, M., Bolx, J., & Fernandez, V. (1995). The Food of Seriola Dumerili (Pisces: Carangidae) in the Catalan Sea (Western Mediterranean). Journal of the Marine Biological Association of the United Kingdom, 75(1), 257-260. doi:10.1017/s0025315400015356Monge-Ortiz, R., Tomás-Vidal, A., Gallardo-Álvarez, F. J., Estruch, G., Godoy-Olmos, S., Jover-Cerdá, M., & Martínez-Llorens, S. (2018). Partial and total replacement of fishmeal by a blend of animal and plant proteins in diets for Seriola dumerili : Effects on performance and nutrient efficiency. Aquaculture Nutrition, 24(4), 1163-1174. doi:10.1111/anu.12655Monge-Ortiz, R., Tomás-Vidal, A., Rodriguez-Barreto, D., Martínez-Llorens, S., Pérez, J. A., Jover-Cerdá, M., & Lorenzo, A. (2017). Replacement of fish oil with vegetable oil blends in feeds for greater amberjack (Seriola dumerili) juveniles: Effect on growth performance, feed efficiency, tissue fatty acid composition and flesh nutritional value. Aquaculture Nutrition, 24(1), 605-615. doi:10.1111/anu.12595Mourente, G., & Bell, J. G. (2006). Partial replacement of dietary fish oil with blends of vegetable oils (rapeseed, linseed and palm oils) in diets for European sea bass (Dicentrarchus labrax L.) over a long term growth study: Effects on muscle and liver fatty acid composition and effectiveness of a fish oil finishing diet. Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 145(3-4), 389-399. doi:10.1016/j.cbpb.2006.08.012Nanton, D. A., Vegusdal, A., Rørå, A. M. B., Ruyter, B., Baeverfjord, G., & Torstensen, B. E. (2007). Muscle lipid storage pattern, composition, and adipocyte distribution in different parts of Atlantic salmon (Salmo salar) fed fish oil and vegetable oil. Aquaculture, 265(1-4), 230-243. doi:10.1016/j.aquaculture.2006.03.053O’Fallon, J. V., Busboom, J. R., Nelson, M. L., & Gaskins, C. T. (2007). A direct method for fatty acid methyl ester synthesis: Application to wet meat tissues, oils, and feedstuffs. Journal of Animal Science, 85(6), 1511-1521. doi:10.2527/jas.2006-491Olsen, R. L., & Toppe, J. (2017). Fish silage hydrolysates: Not only a feed nutrient, but also a useful feed additive. Trends in Food Science & Technology, 66, 93-97. doi:10.1016/j.tifs.2017.06.003De Paiva, E. L., Alves, J. C., Milani, R. F., Boer, B. S., Quintaes, K. D., & Morgano, M. A. (2016). Sushi commercialized in Brazil: Organic Hg levels and exposure intake evaluation. Food Control, 69, 115-123. doi:10.1016/j.foodcont.2016.04.029Panserat, S., Hortopan, G. A., Plagnes-Juan, E., Kolditz, C., Lansard, M., Skiba-Cassy, S., … Corraze, G. (2009). Differential gene expression after total replacement of dietary fish meal and fish oil by plant products in rainbow trout (Oncorhynchus mykiss) liver. Aquaculture, 294(1-2), 123-131. doi:10.1016/j.aquaculture.2009.05.013Piazzon, M. C., Calduch-Giner, J. A., Fouz, B., Estensoro, I., Simó-Mirabet, P., Puyalto, M., … Pérez-Sánchez, J. (2017). Under control: how a dietary additive can restore the gut microbiome and proteomic profile, and improve disease resilience in a marine teleostean fish fed vegetable diets. Microbiome, 5(1). doi:10.1186/s40168-017-0390-3Regost, C., Arzel, J., Robin, J., Rosenlund, G., & Kaushik, S. . (2003). Total replacement of fish oil by soybean or linseed oil with a return to fish oil in turbot (Psetta maxima). Aquaculture, 217(1-4), 465-482. doi:10.1016/s0044-8486(02)00259-4Robaina, L., Izquierdo, M. ., Moyano, F. ., Socorro, J., Vergara, J. ., & Montero, D. (1998). Increase of the dietary n−3/n−6 fatty acid ratio and addition of phosphorus improves liver histological alterations induced by feeding diets containing soybean meal to gilthead seabream, Sparus aurata. Aquaculture, 161(1-4), 281-293. doi:10.1016/s0044-8486(97)00276-7Serradell, A., Torrecillas, S., Makol, A., Valdenegro, V., Fernández-Montero, A., Acosta, F., … Montero, D. (2020). Prebiotics and phytogenics functional additives in low fish meal and fish oil based diets for European sea bass (Dicentrarchus labrax): Effects on stress and immune responses. Fish & Shellfish Immunology, 100, 219-229. doi:10.1016/j.fsi.2020.03.016Shimeno, S., Masumoto, T., Hujita, T., Mima, T., & Ueno, S. (1993). Protein Source for Fish Feed-V. Alternative Protein Sources for Fish Meal in Diets of Young Yellowtail. NIPPON SUISAN GAKKAISHI, 59(1), 137-143. doi:10.2331/suisan.59.137Sitjà-Bobadilla, A., Peña-Llopis, S., Gómez-Requeni, P., Médale, F., Kaushik, S., & Pérez-Sánchez, J. (2005). Effect of fish meal replacement by plant protein sources on non-specific defence mechanisms and oxidative stress in gilthead sea bream (Sparus aurata). Aquaculture, 249(1-4), 387-400. doi:10.1016/j.aquaculture.2005.03.031SLOTH, J. J., JULSHAMN, K., & LUNDEBYE, A.-K. (2005). Total arsenic and inorganic arsenic content in Norwegian fish feed products. Aquaculture Nutrition, 11(1), 61-66. doi:10.1111/j.1365-2095.2004.00334.xStergiou, K. I., & Karpouzi, V. S. (2001). Reviews in Fish Biology and Fisheries, 11(3), 217-254. doi:10.1023/a:1020556722822Thakur, D. P., Morioka, K., Itoh, N., Wada, M., & Itoh, Y. (2009). Muscle biochemical constituents of cultured amberjack Seriola dumerili and their influence on raw meat texture. Fisheries Science, 75(6), 1489-1498. doi:10.1007/s12562-009-0173-2TOMAS, A., DE LA GANDARA, F., GARCIA-GOMEZ, A., PEREZ, L., & JOVER, M. (2005). Utilization of soybean meal as an alternative protein source in the Mediterranean yellowtail, Seriola dumerili. 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An Indo-Pacific coral spawning database.

The discovery of multi-species synchronous spawning of scleractinian corals on the Great Barrier Reef in the 1980s stimulated an extraordinary effort to document spawning times in other parts of the globe. Unfortunately, most of these data remain unpublished which limits our understanding of regional and global reproductive patterns. The Coral Spawning Database (CSD) collates much of these disparate data into a single place. The CSD includes 6178 observations (3085 of which were unpublished) of the time or day of spawning for over 300 scleractinian species in 61 genera from 101 sites in the Indo-Pacific. The goal of the CSD is to provide open access to coral spawning data to accelerate our understanding of coral reproductive biology and to provide a baseline against which to evaluate any future changes in reproductive phenology

An Indo-Pacifc coral spawning database

The discovery of multi-species synchronous spawning of scleractinian corals on the Great Barrier Reef in the 1980s stimulated an extraordinary effort to document spawning times in other parts of the globe. Unfortunately, most of these data remain unpublished which limits our understanding of regional and global reproductive patterns. The Coral Spawning Database (CSD) collates much of these disparate data into a single place. The CSD includes 6178 observations (3085 of which were unpublished) of the time or day of spawning for over 300 scleractinian species in 61 genera from 101 sites in the Indo-Pacific. The goal of the CSD is to provide open access to coral spawning data to accelerate our understanding of coral reproductive biology and to provide a baseline against which to evaluate any future changes in reproductive phenology

Urban coral reefs: Degradation and resilience of hard coral assemblages in coastal cities of East and Southeast Asia

© 2018 The Author(s) Given predicted increases in urbanization in tropical and subtropical regions, understanding the processes shaping urban coral reefs may be essential for anticipating future conservation challenges. We used a case study approach to identify unifying patterns of urban coral reefs and clarify the effects of urbanization on hard coral assemblages. Data were compiled from 11 cities throughout East and Southeast Asia, with particular focus on Singapore, Jakarta, Hong Kong, and Naha (Okinawa). Our review highlights several key characteristics of urban coral reefs, including “reef compression” (a decline in bathymetric range with increasing turbidity and decreasing water clarity over time and relative to shore), dominance by domed coral growth forms and low reef complexity, variable city-specific inshore-offshore gradients, early declines in coral cover with recent fluctuating periods of acute impacts and rapid recovery, and colonization of urban infrastructure by hard corals. We present hypotheses for urban reef community dynamics and discuss potential of ecological engineering for corals in urban areas

Priorities to inform research on marine plastic pollution in Southeast Asia

This is the final version. Available from Elsevier via the DOI in this record. Southeast Asia is considered to have some of the highest levels of marine plastic pollution in the world. It is therefore vitally important to increase our understanding of the impacts and risks of plastic pollution to marine ecosystems and the essential services they provide to support the development of mitigation measures in the region. An interdisciplinary, international network of experts (Australia, Indonesia, Ireland, Malaysia, the Philippines, Singapore, Thailand, the United Kingdom, and Vietnam) set a research agenda for marine plastic pollution in the region, synthesizing current knowledge and highlighting areas for further research in Southeast Asia. Using an inductive method, 21 research questions emerged under five non-predefined key themes, grouping them according to which: (1) characterise marine plastic pollution in Southeast Asia; (2) explore its movement and fate across the region; (3) describe the biological and chemical modifications marine plastic pollution undergoes; (4) detail its environmental, social, and economic impacts; and, finally, (5) target regional policies and possible solutions. Questions relating to these research priority areas highlight the importance of better understanding the fate of marine plastic pollution, its degradation, and the impacts and risks it can generate across communities and different ecosystem services. Knowledge of these aspects will help support actions which currently suffer from transboundary problems, lack of responsibility, and inaction to tackle the issue from its point source in the region. Being profoundly affected by marine plastic pollution, Southeast Asian countries provide an opportunity to test the effectiveness of innovative and socially inclusive changes in marine plastic governance, as well as both high and low-tech solutions, which can offer insights and actionable models to the rest of the world.Natural Environment Research CouncilNational Research Foundation, Prime Minister’s Office (Singapore

Preliminary Surveys of the Commensal Amphipod, Leucothoe Spinicarpa (Abildgaard, 1789), in the colonial tunicate, Ecteinascidia thurstoni Herdman, 1891, in the Andaman Sea, Thailand

Amphipods identified as, Leucothoe spinicarpa (Abildgaard, 1789), were found in the colonial tunicate, Ecteinascidia thurstoni Herdman, 1891, at 1-3 m depth, within a single coral reef area on the coast of the Andaman Sea of Phuket Province in southern Thailand. This represents the first record of commensalism between this amphipod and tunicate in Thai waters. Hostsymbiont occurrences were low, with only 2.2% of all tunicate zooids harboring L. spinicarpa, and always with a single amphipod per zooid. All L. spinicarpa occurred in the branchial chamber of the tunicate and included female and male specimens. Amphipods found in the tunicates ranged between 0.4-2.1 mm in length

The Sharing of the Same Host of Two Species of Anemonefish in the Gulf of Thailand, One of Which Is Possibly Introduced

At Samaesan Island, which is in Chon Buri Province, the Upper Gulf of Thailand, in 2018 we found skunk anemonefish (Amphiprion akallopisos) previously only known from the Andaman Sea that have been establishing their populations in the area at a 4-m depth [...