Special Issue "Emerging issues in Aquaculture"

A special issue of Animals (ISSN 2076-2615). This special issue belongs to the section "Aquatic Animals".

Deadline for manuscript submissions: 31 December 2020.

Special Issue Editor

Prof. Cosmas Nathanailides
Website1 Website2
Guest Editor
Dept Agriculture, University of Ioannina, Greece
Interests: Aquaculture, biotechnology, ecophysiology, environmental education

Special Issue Information

Dear Colleagues,

Aquaculture development is market driven, and the demand for food on the plates of a rising human population is increasing. Economic growth and increased wealth are usually followed by a change in the dietary patterns, which result in greater demand for seafood.

With global food security becoming an ever increasing concern, sustainable aquaculture sets to become the most rapidly increasing food production system worldwide, however the aquaculture industry is challenged to cover the global needs for food while at the same time  is facing several emerging issues in the development of new aquaculture technology and biotechnology methods, culture systems, production of new species, formulation of feed,  fish diseases, environmental issues, social and economic issues, public health, development of new seafood products and processing, packaging and marketing of aquaculture products.

The aim of this special Issue is to publish manuscripts which cover the emerging issues of the Aquaculture sector. Manuscripts that address the current problems and prospects for aquaculture development are invited for this Special Issue.

Contributions which will address environmental issues, aquaculture technology, biotechnology, fish welfare, new species for aquaculture, fish nutrition, fish diseases, socioeconomic aspects, fish processing and marketing are particularly invited.

Prof. Cosmas Nathanailides
Guest Editor

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 papers will be 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. Animals 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 1600 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.


  • Aquaculture
  • Fish farming
  • Fish Nutrition
  • seafood quality
  • preservation

Published Papers (1 paper)

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Open AccessArticle
QTL for Stress and Disease Resistance in European Sea Bass, Dicentrarhus labrax L.
Animals 2020, 10(9), 1668; https://doi.org/10.3390/ani10091668 - 16 Sep 2020
There is a growing interest in selective breeding in European sea bass (Dicentrarchus labrax), especially regarding family selection based on growth performance. In particular, quantitative trait loci (QTL) identification in sea bass enhances the application of marker-assisted breeding for the genetic [...] Read more.
There is a growing interest in selective breeding in European sea bass (Dicentrarchus labrax), especially regarding family selection based on growth performance. In particular, quantitative trait loci (QTL) identification in sea bass enhances the application of marker-assisted breeding for the genetic improvement of the production traits. The aims of the study were to identify potential QTL affecting stress and immunological indicators, body weight, and mortality after vibriosis injection in sea bass as well as to estimate heritability and genetic/phenotypic correlations for the aforementioned traits. To this end, stress test was performed on 960 offspring and a sub-group of them (420) was selected to explore the mortality after vibrio injection. Selective genotyping was performed in 620 offspring for 35 microsatellite markers and distributed into 6 linkage groups. The length of the genetic linkage map was 283.6 cM and the mean distance between the markers was 8.1 cM. QTL affecting body weight in three different growth periods detected on linkage groups LG1, LG4, LG6, and LG14. A QTL associated with weight in early growth stages (290–306 days post-hatching) was also identified on LG3. QTL analysis confirmed the existence of QTL affecting cortisol levels, on LG3 and LG14. Moreover, new QTL affecting only cortisol and glucose levels were detected on LG1 and LG23. No QTL affecting hormonal or biochemical marks was found on LG4 and LG6. Heritability of cortisol, lysozyme levels, and mortality were high (0.36, 0.55, and 0.38, respectively). Full article
(This article belongs to the Special Issue Emerging issues in Aquaculture)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Animal welfare issues in capture-based aquaculture
Authors: Chandararathna U., Iversen M.H., Korsnes K., Sørensen M., Vatsos I.N.
Affiliation: Faculty of Biosciences and Aquaculture, Nord University, Norway
Abstract: Capture based aquaculture (CBA) represents an alternative intensive aquaculture production system for some economically valuable marine fish species, such as bluefin tuna (Thunnus thynnus), eel (Anguilla sp.) and Atlantic cod (Gadus morhua). In CBA, fish are captured from the wild in certain periods of the year and kept for growth to market size in rearing facilities for a period of time, before they are slaughtered. These fish are wild and have not gone through domestication like the species that are reproduced under captivity. Therefore, these fish may be less adapted to the intensive farming conditions and thus their welfare may be compromised in different manners compared to their domesticated counterparts. This review will focus on fish welfare assessment in CBA and the most commonly used fish welfare indicators will be discussed in relation to farming of other domesticated fish.

Title: Intra- and inter-specific variability of IGF-I expression in farmed cold and warm-water species in Iran
Authors: Mania Haghi 1; Mohammad Reza Ghomi 1*; Mahmoud Mohseni 2, Masoud Ghane 3
Affiliation: 1 Department of Fisheries, Tonekabon branch, Islamic Azad University, Tonekabon, Iran 2 Cold-water Fishes Research Center, Dohezar Rd, Tonekabon, Iran 3 Department of Microbiology, Tonekabon branch, Islamic Azad University, Tonekabon, Iran
Abstract: Changes in the expression of liver insulin-like growth factor IGF-I mRNA in a growing cold-water fish species Oncorhynchus mykiss (from locally produced and imported broodstock) and in two warm-water species, Hypophthalmichthys nobilis and Hypophthalmichthys molitrix were monitored. Gene expression analysis in liver tissues by using real-time PCR revealed a significant difference in expression level of IGF-I between native and non-native rainbow trout (P < 0.05). IGF-I levels were found to have the following order (non-native rainbow trout> bighead carp> silver carp> native rainbow trout). Local strains of rainbow trout, bighead carp and silver carp exhibited stable IGF-I mRNA levels, at different stages of growth. The imported broodstock of rainbow trout exhibited increased IGF-I levels during the entire period studied, with a peak in the IGF-I mRNA levels of fingerlings. The results indicate intra- and inter-specific variability of IGF-I expression in farmed fish.

Title: Influence of low dietary inclusion of the microalga Nannochloropsis gaditana on performance and muscle growth in juvenile gilthead seabream (Sparus aurata)
Authors: María D Ayala *, Galián, C. , Fernández, V. , Arizcun M , Chaves-Pozo E . Sáez, M.I., Galafat, A., Alarcón, F.J. and Martínez, T.F. 3
Affiliation: University of Murcia, Faculty of Veterinary, Department of Anatomy and Comparative Pathological Anatomy, 30100 Campus of Espinardo, Murcia. Spain. Instituto Español de Oceanografía, Centro Oceanográfico de Murcia, Puerto de Mazarrón. 30860 Murcia. Universidad de Almería. Departamento de Biología y Geología. 04120 Almería, Spain.
Abstract: This study assessed both performance and white muscle growth in seabream juveniles (20g) fed for 90 days with 2.5 and 5% raw (R-2.5, R-5) and hydrolysed (H-2.5, H-5) Nannochloropsis gaditana compared with a microalgae-free fed group (C). Groups C, R-2.5 and R-5 showed higher growth after 40 days, whereas R-2.5 did after 64 and 90 days. Groups C and R-2.5 displayed the highest muscle growth due to increased hyperplasia in C and higher hypertrophy in R-2.5. Conversion index, specific growth rate and daily feed intake didn’t differ among groups. The results indicated improved growth with the inclusion of 2.5 % raw microalgae.

Title: Spawning induction of thicklip grey mullet, Chelon labrosus by the use of GnRHa hormonal treatments
Authors: Kokokiris L1; Mylonas C2; Minos G3; Nathanailides C4; Papadaki M2; Rosenfeld H5
Affiliation: 1 International Hellenic University (IHU), Department of Nutritional Sciences and Dietetics, Thessaloniki, Hellas; 2 Hellenic Centre for Marine Research (HCMR), Institute of Marine Biology, Biotechnology and Aquaculture, Iraklion, Hellas; 3 International Hellenic University (IHU), Department of Νursing, Thessaloniki, Hellas; 4 University of Ioannina (UI), Department of Agricultural Sciences, Arta, Hellas; 5 Israel Oceanographic and Limnological Research Institute (IOLR), Haifa, Israel.
Abstract: The thicklip grey mullet, Chelon labrosus (Risso, 1982) is an emerging fish species for the expansion of the European aquaculture industry. However, under captivity this species exhibits some reproductive dysfunctions which include failure to undergo oocyte maturation and ovulation in captivity. The aim of the present work was to test the effectiveness of a synthetic analogue of the gonadotropin releasing hormone (GnRHa) to induce spawning. The results indicate that the combined administration of GnRHa and dopamine antagonist and in the form of multiple injections or implants was effective in inducing spawning and production of viable eggs of the thicklip grey mullet in captivity. The sustainable aquaculture of new species requires solving some issues regarding the spawning under control conditions in order to produce fry. The results of the present work indicate that one crucial bottleneck production problem for the cultivation of this fish species may require the treatment of female fish with GnRHa and dopamine antagonist.

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