61 documents found, page 1 of 7
Safe applications of ozone in tropical marine RAS: determining impacts of eleva...
Weidlich, Sabine; Keuter, Sabine; Aires, Tania; Engelen, Aschwin; Kunzmann, AndreasOzone-aided treatment of seawater creates secondary oxidants, which can be toxic for aquaculture animals. We aimed to define safe limits of ozonation-derived total residual oxidants (TRO) for Stylophora pistillata and Xenia sp. by conducting a 96 h acute toxicity experiment. In a chronic exposure experiment we then determined the impacts of three sub-lethal levels of TRO on animal health over four weeks by moni...
Roadmap to sustainably develop the European seaweed industry
Jueterbock, Alexander; Hoarau-Heemstra, Hindertje; Wigger, Karin; Duarte, Bernardo; Bruckner, Christian; Chapman, Annelise; Duan, DelinHow to build a sustainable seaweed industry is important in Europe's quest to produce 8 million tons of seaweed by 2030. Based on interviews with industry representatives and an expert-workshop, we developed an interdisciplinary roadmap that addresses sustainable development holistically. We argue that sustainable practices must leverage synergies with existing industries (e.g. IMTA systems, offshore wind farms...
Coral garden conservation and restoration: how host taxon and ex-situ maintenan...
Rola, Marcellina; Coelho, Márcio A. G.; Pruckner, Christian; Quiroga-Pérez, Manuela; Stock, Willem; Baylina, Núria; Engelen, Aschwin; Wägele, HeikeTemperate coral gardens are dense coral formations, which support rich marine species diversity, enabling benthic-pelagic coupling. Over the past decades, coral gardens have been increasingly threatened by bottom fishing, oil and gas exploitation, and climate change. Microbiome research bears great potential for assisted resilience in targeted conservation and restoration approaches. Yet, fundamental parameters...
Microbiome matters: how transplantation methods and donor origins shape the suc...
Boulenger, Arnaud; Aires, Tania; Engelen, Aschwin; Muyzer, Gerard; Marengo, Michel; Gobert, SylvieBackground Posidonia oceanica forms extensive seagrass meadows in the Mediterranean Sea, providing key ecosystem services. However, these meadows decline due to anthropogenic pressures like anchoring and coastal development. Transplantation-based restoration has been explored for decades, yet the role of the plant-associated microbiome in restoration success remains largely unknown. Results 16 S rRNA gene ampli...
Exploring foraging preference of local fish species towards non-indigenous foul...
Chebaane, Sahar; Pais, Miguel Pessanha; Engelen, Aschwin; Ramalhosa, Patrício; Silva, Rodrigo; Gizzi, Francesca; Canning-Clode, JoãoNon-indigenous species (NIS) spread from marinas to natural environments is influenced by niche availability, habitat suitability, and local biotic resistance. This study explores the effect of indigenous fish feeding behaviour on NIS proliferation using fouling communities, pre-grown on settlement plates, as two distinct, representative models: one from NIS-rich marinas and the other from areas outside marinas...
Quantitative PCR assays as a monitoring tool for bacterial genera in fresh fish...
Pinto, Patricia IS; NAJAFPOUR, BABAK; Lima, Pedro; P. Machado; Aires, Tania; Engelen, Aschwin; Tsironi, T.; Anjos Guerreiro, Liliana Isabel ToméFresh fish fillets are a valuable but highly perishable food, and their rapid microbial deterioration is a drawback for food safety and sustainability of aquaculture, food and retail industries. Quantitative PCR (qPCR) assays based on 16S rRNA gene (16S) sequences were developed for the most abundant bacteria genera detected by metagenomics in fresh or processed fish fillets. The efficiency and specificity of s...
Taxonomic insights into caulerpa (Bryopsidales, Chlorophyta) species in French ...
Lagourgue, Laura; Sauvage, Thomas; Zubia, Mayalen; Draisma, Stefano G. A.; Vieira, António Carlos; Engelen, Aschwin; Payri, Claude E.Caulerpa J.V. Lamouroux is a genus of green macroalgae belonging to the family Caulerpaceae in the order Bryopsidales. The genus comprises 104 currently accepted species, of which 51 have been recorded from Pacific Islands. Among these islands, French Polynesia is found in the middle of the South Pacific Ocean and includes five archipelagos (i.e., the Austral, Gambier, Marquesas, Society, and Tuamotu Islands) w...
Shifts in sulphur-cycling bacteria in the rhizobiome support the adaptation of ...
Barilo, Anastasiia; Engelen, Aschwin; Wilken, Susanne; Bouwmeester, Harro; Muyzer, GerardCaulerpa is a genus of green macroalgae that lives in tropical and subtropical coastal waters. It is an intriguing organism because, despite having plant-like structures, it is one giant cell – which, next to multiple nuclei, chloroplasts, and mitochondria, also contains endo- and epiphytic bacteria. The role of these bacteria is unknown, but they might impact the growth and development of the host, adaptation ...
Macroalgal microbiomes unveil a valuable genetic resource for halogen metabolism
Lavecchia, Anna; Fosso, Bruno; Engelen, Aschwin; Borin, Sara; Manzari, Caterina; Picardi, Ernesto; Pesole, Graziano; Placido, AntonioBackground Macroalgae, especially reds (Rhodophyta Division) and browns (Phaeophyta Division), are known for producing various halogenated compounds. Yet, the reasons underlying their production and the fate of these metabolites remain largely unknown. Some theories suggest their potential antimicrobial activity and involvement in interactions between macroalgae and prokaryotes. However, detailed investigations...
Innate feeding plasticity and animal prey support invasiveness of aquatic speci...
Encarnação, João Pedro da Silva; Dias, Ester; Engelen, Aschwin; Serrao, Ester A.; Morais, Pedro; Teodosio, MariaNon-indigenous species often rely on trophic plasticity to adjust to available food sources and even to avoid interspecific competition while overcoming environmental constraints during the establishment phase and, eventually, as they become invasive. The Atlantic blue crab Callinectes sapidus Rathbun, 1896 is expanding quickly in southwestern Europe and northwestern Africa, raising concerns about its impacts. ...