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Selected Papers from the “XVIII Spanish National Aquaculture Congress Cádiz...
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Selected Papers from the “XVIII Spanish National Aquaculture Congress Cádiz 2022—Aquaculture: Seas and Rivers of Opportunities”

A special issue of Fishes (ISSN 2410-3888).

Deadline for manuscript submissions: closed (1 September 2023) | Viewed by 10543

Special Issue Editors

Dr. Juan Antonio Martos-Sitcha

E-Mail Website
Guest Editor
Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, 11519 Puerto Real, Cadiz, Spain
Interests: aquaculture; fish; physiology; fisheries
Dr. Ismael Jerez-Cepa

E-Mail Website
Guest Editor
Department of Biology, Faculty of Marine and Environmental Sciences, International Campus of Excellence in Marine Science (CEI•MAR), University of Cádiz, E11510 Puerto Real, Spain
Interests: welfare biomarkers; stress physiology; fish metabolism; glucocorticoids; energy management; aquaculture improvement
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Manuel Yúfera

E-Mail Website
Guest Editor
Instituto de Ciencias Marinas de Andalucía (ICMAN-CSIC), Consejo Superior de Investigaciones Científicas, 11519 Puerto Real, Cádiz, Spain
Interests: fish; aquaculture; feeding physiology; gastrointestinal functionality; larval fish ontogeny
Dr. Juan Miguel Mancera

E-Mail Website
Guest Editor
Department of Biology, Faculty of Marine and Environmental Sciences, University of Cadiz, Cadiz, Spain
Interests: physiology; stress; osmoregulation; metabolism

Special Issue Information

The XVIII Spanish National Aquaculture Congress Cádiz 2022—Aquaculture: seas and rivers of opportunities (Cádiz, Spain, 21–24 November 2022).

Dear Colleagues,

The Congress theme, "Aquaculture: seas and rivers of opportunities", indicates that aquaculture activity should be central to the concept of "blue growth" and should be a source of opportunities for entrepreneurship and the generation of jobs associated with this economic activity. The objective of the XVIII CNA, organized by the Spanish Aquaculture Society (SEA), is to support this idea and allow the results presented therein to contribute to its consolidation.

The Congress, as usual, will be a meeting and debate place for the different agents of the aquaculture sector related to the various aspects of aquaculture (nutrition and feeding, welfare, reproduction, genetics, economy and production, species diversification, engineering and technology, instrumentation and aquaculture processes, environmental sustainability, aquaculture management, etc.). In addition, it is expected to show the future lines that government authorities are designing for the sector.

Dr. Juan Antonio Martos-Sitcha
Dr. Ismael Jerez-Cepa
Prof. Dr. Manuel Yúfera
Dr. Juan Miguel Mancera
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.

Keywords

  • aquaculture
  • nutrition
  • reproduction and genetic
  • welfare
  • pathology and health
  • environmental sustainability
  • microalgae and macroalgae
  • species diversification
  • engineering and technology
  • aquaculture management

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Published Papers (3 papers)

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Research

16 pages, 1864 KiB  
Article
New Organic Raw Materials for Gilthead Seabream (Sparus aurata) Feeding and the Effects on Growth, Nutritive Parameters, Digestibility, and Histology
by Eslam Tefal, Ignacio Jauralde, Ana Tomás-Vidal, Silvia Martínez-Llorens, David S. Peñaranda and Miguel Jover-Cerdá
Fishes 2023, 8(6), 330; https://doi.org/10.3390/fishes8060330 - 20 Jun 2023
Cited by 5 | Viewed by 5771
Abstract
A 120-day experiment investigated the new organic raw materials for Gilthead seabream (Sparus aurata) feeding on growth, nutritional parameters, digestibility, and histology. An organic control diet (CON) and three diets with 100% organic raw materials—the rest of rainbow trout, visceral Iberian [...] Read more.
A 120-day experiment investigated the new organic raw materials for Gilthead seabream (Sparus aurata) feeding on growth, nutritional parameters, digestibility, and histology. An organic control diet (CON) and three diets with 100% organic raw materials—the rest of rainbow trout, visceral Iberian pig, and insects as a protein source (TRO, IBE, and INS)—were tested. After the experiment, growth, nutritional parameters, digestibility, and histology were measured. The CON diet-fed seabream obtained the highest weight; there was no difference between the experimental diets. The crude protein content was the highest in seabream fed the TRO and INS diets. Crude fat was the highest value observed in the CON diet. High digestibility was observed in seabream-fed IBE and INS diets. Except for EAA methionine (Met), there were no static differences in retention efficiency. The diet with the highest hydrolysis rate was IBE. Diet differences were significant but had the typical healthy liver morphology of seabream. Seabream fed on the TRO and INS diets had shorter distal gut measurements. In conclusion, the full substitution of fishmeal with organic raw materials, including rainbow trout remains, Iberian pig viscera, and insects, offers several benefits in terms of digestibility, histology, and growth performance and may help improve sustainable and healthy aquaculture practices. Full article
(This article belongs to the Special Issue Selected Papers from the “XVIII Spanish National Aquaculture Congress Cádiz 2022—Aquaculture: Seas and Rivers of Opportunities”)
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21 pages, 1329 KiB  
Article
Different Diets Based on Yellow Mealworm (Tenebrio molitor)—Part A: Facing the Decrease in Omega−3 Fatty Acids in Fillets of Rainbow Trout (Oncorhynchus mykiss)
by Federico Melenchón, Ana María Larrán, Miguel-Ángel Sanz, Daniel Rico, Dmitri Fabrikov, Fernando G. Barroso, Alba Galafat, Francisco Javier Alarcón, Amalia E. Morales, M. Carmen Hidalgo, Helena M. Lourenço, María-Fernanda Pessoa and Cristina Tomás-Almenar
Fishes 2023, 8(6), 286; https://doi.org/10.3390/fishes8060286 - 26 May 2023
Cited by 2 | Viewed by 2030
Abstract
Aquaculture struggles with sustainability due to the use of fishmeal, and insects are one potential alternative. Insects have low long-chain omega−3 polyunsaturated fatty acid content, and insect-fed fish reflect this in their composition. In total, 500 rainbow trout (Oncorhynchus mykiss, ~46 [...] Read more.
Aquaculture struggles with sustainability due to the use of fishmeal, and insects are one potential alternative. Insects have low long-chain omega−3 polyunsaturated fatty acid content, and insect-fed fish reflect this in their composition. In total, 500 rainbow trout (Oncorhynchus mykiss, ~46 g) were fed until the fish reached a commercial size (~415 g). Five diets were used: one control based on fishmeal as main source of protein; two with a 50% replacement of fishmeal with yellow mealworm meal (Tenebrio molitor), one with full-fat insect, and another partially defatted; two other diets similar to the one with the full-fat insect, but with the addition of an experimental algal oil rich in omega−3 in two different concentrations (one equivalent to control, the other one to the defatted insect diet). Growth was unaffected, as well as texture and organoleptic profile of the fillets. Lightness, brightness and colour of the fillets were slightly modified by the experimental diets. An increase in omega−3 levels over those of the full-fat insect diet is described. An omega−3 sparing effect was highlighted, causing lipid accumulation in fillets and liver, and a mild increase in oxidative damage. More research is encouraged to evaluate the fatty acid profile of the liver. Full article
(This article belongs to the Special Issue Selected Papers from the “XVIII Spanish National Aquaculture Congress Cádiz 2022—Aquaculture: Seas and Rivers of Opportunities”)
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19 pages, 1694 KiB  
Article
Different Diets Based on Yellow Mealworm (Tenebrio molitor)—Part B: Modification of the Intestinal Inflammatory Response and the Microbiota Composition of Rainbow Trout (Oncorhynchus mykiss)
by Federico Melenchón, Ana María Larrán, Marta Hernández, David Abad, Amalia E. Morales, Héctor J. Pula, Dmitri Fabrikov, María José Sánchez-Muros, Alba Galafat, Francisco Javier Alarcón, Helena M. Lourenço, María-Fernanda Pessoa and Cristina Tomás-Almenar
Fishes 2023, 8(6), 284; https://doi.org/10.3390/fishes8060284 - 26 May 2023
Cited by 2 | Viewed by 1680
Abstract
With the purpose of improving aquaculture sustainability, the search for protein alternatives to fishmeal makes it necessary to test different variables and the possible repercussions of new ingredients. The use of insect meal as a protein source for aquaculture is well described, but [...] Read more.
With the purpose of improving aquaculture sustainability, the search for protein alternatives to fishmeal makes it necessary to test different variables and the possible repercussions of new ingredients. The use of insect meal as a protein source for aquaculture is well described, but the complex composition of insect meals (fat and other components) can affect the physiology of fish. For this reason, as a part of a bigger study, the aim of the current manuscript was to test diets based on three different presentations of insect meal coming from yellow mealworm (Tenebrio molitor): full fat, partially defatted, and supplemented with a long chain omega–3-enriched oil, and to evaluate their effects on protein digestibility, biometric indices, immunological system and gut health (intestinal histomorphology and microbiota) of rainbow trout (Oncorhynchus mykiss). Digestibility of the protein and body indices showed a minor but consistent trend. The non-specific immunological system did not show changes, but the histology of the intestine showed signs that insect meals could be softening a mild inflammatory response. The gut microbiota suffered several changes, which could be associated with the different amino acid and fatty acid compositions of the diets. Full article
(This article belongs to the Special Issue Selected Papers from the “XVIII Spanish National Aquaculture Congress Cádiz 2022—Aquaculture: Seas and Rivers of Opportunities”)
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