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Selected Papers from 10th Aquaciencia—the Brazilian Congress of Aquaculture and...
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Selected Papers from 10th Aquaciencia—the Brazilian Congress of Aquaculture and Aquatic Biology

A special issue of Fishes (ISSN 2410-3888). This special issue belongs to the section "Sustainable Aquaculture".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 5167

Special Issue Editors

Prof. Dr. Bernardo Baldisserotto

E-Mail Website
Guest Editor
Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria, Brazil
Interests: physiology; osmoregulation; anesthesia; antibacterials; culture of tropical freshwater fish
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Débora Machado Fracalossi

E-Mail Website
Guest Editor
Departamento de Aquicultura, Federal University of Santa Catarina (UFSC), Florianópolis 88034-001, SC, Brazil
Interests: aquaculture; fish nutrition

Special Issue Information

Dear Colleagues,

The 10th Aquaciencia—The Brazilian Congress of Aquaculture and Aquatic Biology will be held on 10–14 April 2023 in Florianópolis-Santa Catarina, Brazil.

Aquaculture is one of the fastest growing food production sectors in the world and Brazil is no exception. However, as Brazil’s aquaculture potential becomes a reality, several obstacles and challenges arise that, in most cases, can only be solved with science as a basis. Even with the recent decrease in investments in education, science and innovation, the research landscape in Brazil is gradually evolving. As a result, Brazilian aquaculture has not only increased its production in recent years, but has also witnessed the emergence of new technologies and increasingly diversified production scenarios. This Special Issue of Fishes will feature the best papers presented at the 10th edition of Aquaciencia—the Brazilian Congress of Aquaculture and Aquatic Biology. For submissions from the 10th Aquaciencia 2023 conference, the publication partner Fishes has agreed to grant a special discount of 50%. It is expected that this Special Issue will bring together studies that address the most diverse aspects of aquaculture in Brazil, which may include, but is not limited to, hatchery and grow-out technology, species diversification, innovative production systems, integrated aquaculture systems, effects of climate change, impacts, sustainability assessments, etc.

Prof. Dr. Bernardo Baldisserotto
Prof. Dr. Débora Machado Fracalossi
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Fishes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (3 papers)

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Research

11 pages, 304 KiB  
Article
Applying Biofloc Technology in the Culture of Mugil cephalus in Subtropical Conditions: Effects on Water Quality and Growth Parameters
by Sara Garcés and Gabriele Lara
Fishes 2023, 8(8), 420; https://doi.org/10.3390/fishes8080420 - 17 Aug 2023
Cited by 1 | Viewed by 1109
Abstract
Mugil cephalus is an estuarine species that has been shown to acclimate to a diversity of environmental conditions being a good candidate to diversify aquaculture. The objective of this study was to evaluate the growth and water quality of M. cephalus juveniles in [...] Read more.
Mugil cephalus is an estuarine species that has been shown to acclimate to a diversity of environmental conditions being a good candidate to diversify aquaculture. The objective of this study was to evaluate the growth and water quality of M. cephalus juveniles in a biofloc technology system (BFT). Over a period of 87 days, mullet juveniles (117.36 ± 6.48 g) were reared in two experimental conditions: water exchange (control group) (50% three times a week) and BFT (C:N ratio of 15:1). M. cephalus juveniles were stocked at a density of 7.2 kg·m−3. Water quality parameters were monitored periodically. Fish were fed with a balanced artificial feed for marine fish (2% of the total biomass). The water quality parameters were similar between the treatments, with the exception of pH, alkalinity, TSS, and N-NO3 (p < 0.05). Zootechnical parameters WG, DWG, BG, SGR, condition factor, and survival did not show significant differences (p > 0.05). The biomass gain was higher in BFT (p < 0.05). Water quality variables did not appear to influence mullet survival under culture conditions. Mullet is a species that can be reared in BFT without compromising productive performance and having a significant saving of water. Full article
(This article belongs to the Special Issue Selected Papers from 10th Aquaciencia—the Brazilian Congress of Aquaculture and Aquatic Biology)
15 pages, 724 KiB  
Article
Evaluating the Bioremediation Capacity of the Polychaete Perinereis gualpensis (Jeldes, 1963) for Atlantic Salmon Aquaculture Sludge
by Silvia Gómez, Gabriele Lara, Carlos Felipe Hurtado, René Espinoza Alvarado, Jayro Gutiérrez, José Carlos Huechucoy, Guillermo Valenzuela-Olea and Alice Turner
Fishes 2023, 8(8), 417; https://doi.org/10.3390/fishes8080417 - 15 Aug 2023
Viewed by 1294
Abstract
The potential of polychaetes for the bioremediation of aquaculture sludge gained more attention in recent years. These organisms can reduce organic matter and nutrients contained in the sludge of several aquaculture species, improving the sustainability of these activities. The aim of this study [...] Read more.
The potential of polychaetes for the bioremediation of aquaculture sludge gained more attention in recent years. These organisms can reduce organic matter and nutrients contained in the sludge of several aquaculture species, improving the sustainability of these activities. The aim of this study was to evaluate the removal performance of Perinereis gualpensis (Jeldes, 1963) being fed with aquaculture sludge produced by a recirculating system cultivating Atlantic salmon. The experiment involved adding different amounts of sludge (10% and 20% with respect to total substrate) at a density of 300 organisms m−2 during 30 days. A treatment without sludge served as a control, using natural substrate. The highest removal rate of total organic matter (TOM) (23.95 ± 13.19 g m−2 day−1) was achieved by P. gualpensis with 20% sludge addition, a reduction of about 36% compared to the total amount added at the beginning of the trials. The organisms fed with aquaculture sludge presented higher nitrogen (8–9%) and carbon (40–43%) contents, with a maximum organic carbon assimilation of 32% in relation to the total content in the sludge. The high survival (88–95%) and positive growth rates (0.28% day−1) achieved by P. gualpensis indicated that this species can be sustained with salmon sludge as the only source of food. These results indicate that P. gualpensis is a promising candidate for removing nutrients from salmon effluents. Moreover, the protein contents achieved by the organisms (52–58%) meet the dietary protein requirements of several aquaculture species. Further research is needed to determine the maximum bioremediation capacity of this species and to evaluate the lipid content and fatty acid profiles of P. gualpensis to determine its potential application in aquaculture feed. Full article
(This article belongs to the Special Issue Selected Papers from 10th Aquaciencia—the Brazilian Congress of Aquaculture and Aquatic Biology)
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17 pages, 769 KiB  
Article
Soy Lecithin Supplementation Promotes Growth and Increases Lipid Digestibility in GIFT Nile Tilapia Raised at Suboptimal Temperature
by Rosana Oliveira Batista, Bianca Leticia Richter, Jorge Filipe Banze, Delano Dias Schleder, Maria Salhi, Renata Oselame Nobrega, Maria Fernanda Oliveira da Silva, Bruna Mattioni, James Eugene Pettigrew and Débora Machado Fracalossi
Fishes 2023, 8(8), 404; https://doi.org/10.3390/fishes8080404 - 03 Aug 2023
Cited by 1 | Viewed by 2022
Abstract
Soy lecithin (SL) is a source of phospholipids, which play a crucial role in determining cell membrane structure, fluidity, and functionality. This study investigated the effects of dietary SL on the performance, nutrient digestibility, and body composition of Nile tilapia juveniles (average initial [...] Read more.
Soy lecithin (SL) is a source of phospholipids, which play a crucial role in determining cell membrane structure, fluidity, and functionality. This study investigated the effects of dietary SL on the performance, nutrient digestibility, and body composition of Nile tilapia juveniles (average initial weight 12.2 g) raised at 22 °C. The experimental diets contained increasing levels of SL (0.0, 21.0, 43.0, and 64.0 g kg−1). The best weight gain and feed efficiency occurred with 42.2 and 49.8 g kg−1 of SL inclusion, respectively, estimated through quadratic regression after 90 days of feeding. The body composition of the fish was also affected by feeding with SL, with a decrease in total body lipids and viscerosomatic and hepatosomatic indices but an increase in polyunsaturated fatty acids. A digestibility trial using only two diets (0SLD and 43SLD) revealed increased lipid and fatty acids digestibility in fish fed with 43SLD. In addition, the consumption of digestible nutrients was the highest in fish fed the diet 43SL. Therefore, SL supplementation is beneficial in fall/spring diets for Nile tilapia juveniles as it can improve growth, lipid digestibility, and body composition when supplemented within the range of 42 to 50 g kg−1 diet. Full article
(This article belongs to the Special Issue Selected Papers from 10th Aquaciencia—the Brazilian Congress of Aquaculture and Aquatic Biology)
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