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Life
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Innovative Aquaculture and Fish Reproduction
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Innovative Aquaculture and Fish Reproduction

A special issue of Life (ISSN 2075-1729). This special issue belongs to the section "Animal Science".

Deadline for manuscript submissions: 28 June 2024 | Viewed by 5421

Special Issue Editors

Dr. Laszlo Horvath

E-Mail Website
Guest Editor
Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, 2100 Godollo, Hungary
Interests: fish reproduction; pond fish breeding; common carp; European catfish; pike perch
Dr. Tamás Müller

E-Mail Website
Guest Editor
Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, 2100 Godollo, Hungary
Interests: fish reproduction; sperm and hormone lavage into fish ovary; environmental protection

Special Issue Information

Dear Colleagues,

Aquaculture is one of the fast-growing sectors of protein production, and is able to produce environment-friendly products for the food market with low carbon footprints. From the perspective of human consumption, finfish species are among the most important groups of aquaculture-origin products. Many of the economic and environmental advantages of fish species produced in different aquatic systems arise from their physiological properties. The body temperature of most fish species is close to the temperature of water—they do not spend energy on maintaining a constant body temperature. Their food utilization is high, and in production systems many individuals are grown concurrently. Additionally, if an aquatic system is placed in a large pond, fish are also able to utilize renewable natural resources. Fish meat has a high biological value, with easily digestible protein content and many essential fatty acids.

A progressive approach of members also contributes to the rapid development of the aquaculture sector: research results are immediately introduced into practice. A basic condition for a high-level operation is proper seed production. The development of breeding methods and the utilization of reliable propagation and offspring rearing methods are fundamental, since the economic production of a high-value product can only be ensured if there is a stable seed supply with high quality standards.

In addition to introducing advanced research results and aquaculture innovations, this Special Issue also collects new trends in research directions and reviews of the development history of successful fish propagation methods. The authors are competent researchers and university lecturers, who in many cases work together with practical experts; thus, research results can be rapidly applied in aquaculture practices.

Dr. Laszlo Horvath
Dr. Tamás Müller
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. Life 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

  • fish reproduction
  • fish propagation
  • pond fish breeding
  • innovation is aquaculture
  • fish genetics
  • nursing of fish fry
  • zooplankton management in ponds

Published Papers (4 papers)

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Research

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11 pages, 765 KiB  
Article
Black Soldier Fly (Hermetia illucens) Meal as Direct Replacement of Complex Fish Feed for Rainbow Trout (Oncorhynchus mykiss) and African Catfish (Clarias gariepinus)
by Tamás Bartucz, Endre Csókás, Borbála Nagy, Márk Péter Gyurcsák, Zoltán Bokor, Gergely Bernáth, József Molnár, Béla Urbányi and Balázs Csorbai
Life 2023, 13(10), 1978; https://doi.org/10.3390/life13101978 - 28 Sep 2023
Viewed by 1152
Abstract
In the experiments, defatted black soldier fly meal reared on vegetable byproducts was used in the fry rearing of two economically important fish species, African catfish and rainbow trout. Both fish species were reared in a recirculation system and 0–33–66–100% of the complex [...] Read more.
In the experiments, defatted black soldier fly meal reared on vegetable byproducts was used in the fry rearing of two economically important fish species, African catfish and rainbow trout. Both fish species were reared in a recirculation system and 0–33–66–100% of the complex fry feed was replaced by a defatted prepupae meal of black soldier flies during a 28-day feeding experiment. African catfish was reared at 25 ± 1 °C while rainbow trout was reared at 12 ± 1 °C. The results showed that the growth of African catfish was not significantly reduced when 66% of the feed was replaced by soldier fly meal (mean weight in the control fish group at the end of the experiment was 0.4632 ± 0.2469 g, while the 66% group resulted mean weights of 0.4150 ± 0.1886 g) and the survival did not show any statistically different results (mean survival in control group was 57.48 ± 13.76% while it was 56.6 ± 7.763% in the 66% group). In the case of rainbow trout, replacing the feed entirely with insect meal did not cause a decrease in weight gain (final mean weight in the control group was measured at 1.9640 ± 0.4154 g, while in the group consuming only insect meal, it was 1.9410 ± 0.4248 g) or in survival (in the control group 98.5%, while in the group consuming only insect meal 99.5%). All these preliminary results indicate that black soldier fly meal can be used directly as a nursery feed in fish farming as a partial or total replacement of complete feeds. The results showed that black soldier fly meal could replace 66% of the complex brood feed of African catfish and up to 100% of rainbow trout feed without deterioration of production results. Our experiments have therefore opened the way for further experiments on insect meal in larval rearing. Full article
(This article belongs to the Special Issue Innovative Aquaculture and Fish Reproduction)
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10 pages, 696 KiB  
Article
Genetic Structure and Biodiversity in Wild Centropomus parallelus and in Wild and Recently Domesticated Centropomus undecimallis Populations
by Marcos Edgar Herkenhoff, Miklos Maximiliano Bajay and Carlos André da Veiga Lima-Rosa Costamilan
Life 2023, 13(7), 1595; https://doi.org/10.3390/life13071595 - 20 Jul 2023
Cited by 2 | Viewed by 738
Abstract
Centropomus undecimalis (common snook) and Centropomus parallelus (fat snook) have a wide distribution from southern Florida to southern Brazil. Due to their value as a food source, these species have been heavily exploited through predatory fishing, posing a conservation challenge. To assess their [...] Read more.
Centropomus undecimalis (common snook) and Centropomus parallelus (fat snook) have a wide distribution from southern Florida to southern Brazil. Due to their value as a food source, these species have been heavily exploited through predatory fishing, posing a conservation challenge. To assess their genetic diversity and population structure, we used microsatellite markers. Our findings revealed genetic differences among populations of the same species, highlighting the need for targeted conservation efforts. The microsatellite markers proved effective in assessing genetic variability, providing valuable insights for management and conservation. The parameters Ho (observed heterozygosity) and He (expected heterozygosity) were reliable indicators of genetic diversity, and specific loci showed varying allele numbers across populations. Our study contributes to understanding population genetics in these snook species and supports their conservation. Despite not being classified as endangered, genetic differences among populations emphasize the importance of considering population-level characteristics in conservation strategies. This research lays the foundation for future studies and actions aimed at preserving these valuable fish species. In summary, our study demonstrates the significance of microsatellite markers in assessing genetic variability and population structure in common snook and fat snook, informing conservation efforts for these species. Full article
(This article belongs to the Special Issue Innovative Aquaculture and Fish Reproduction)
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14 pages, 1259 KiB  
Article
Iron Fertilization Can Enhance the Mass Production of Copepod, Pseudodiaptomus annandalei, for Fish Aquaculture
by Guo-Kai Hong, Jimmy Kuo and Kwee Siong Tew
Life 2023, 13(2), 529; https://doi.org/10.3390/life13020529 - 15 Feb 2023
Cited by 2 | Viewed by 1976
Abstract
Copepods are proven nutritious food sources for the mariculture/larviculture industry, however, unreliable methods for mass production of copepods are a major bottleneck. In this study, we modified a previously reported inorganic fertilization method (N: 700 μg L−1 and P: 100 μg L [...] Read more.
Copepods are proven nutritious food sources for the mariculture/larviculture industry, however, unreliable methods for mass production of copepods are a major bottleneck. In this study, we modified a previously reported inorganic fertilization method (N: 700 μg L−1 and P: 100 μg L−1) by the addition of iron (Fe: 10 μg L−1, using FeSO4·7H2O) (+Fe treatment) and compared its suitability for copepod culture (Pseudodiaptomus annandalei) to the original method (control). The experiment was conducted outdoors in 1000 L tanks for 15 days. The addition of iron prolonged the growth phase of the phytoplankton and resulted in the production of significantly more small phytoplankton (0.45–20 μm, average 2.01 ± 0.52 vs. 9.03 ± 4.17 µg L−1 in control and +Fe, respectively) and adult copepods (control: 195 ± 35, +Fe: 431 ± 109 ind L−1), whereas copepodid-stage was similar between treatments (control: 511 ± 107 vs. +Fe: 502 ± 68 ind L−1). Although adding iron increased the cost of production by 23% compared to the control, the estimated net profit was 97% greater. We concluded that inorganic fertilization, with the addition of iron (Fe: 10 μg L−1), could be an effective method for the mass production of copepods for larviculture. Full article
(This article belongs to the Special Issue Innovative Aquaculture and Fish Reproduction)
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Review

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33 pages, 22048 KiB  
Review
Review of Central-Eastern European Propagation and Larvae Nursing Method for Common Carp (Cyprinus carpio L.)
by Laszlo Horvath, Arpad Hegyi, Kinga Katalin Lefler, Balazs Csorbai, Eva Kovacs, Tamas Szabo, Tamas Muller and Bela Urbanyi
Life 2023, 13(12), 2334; https://doi.org/10.3390/life13122334 - 12 Dec 2023
Cited by 1 | Viewed by 1102
Abstract
Common carp (Cyprinus carpio L.) as a cultivated fish species has huge importance all over the world. According to FAO statistics, carp is the third most widely bred freshwater pond fish species; only two other Cyprinids (silver carp and grass carp) are [...] Read more.
Common carp (Cyprinus carpio L.) as a cultivated fish species has huge importance all over the world. According to FAO statistics, carp is the third most widely bred freshwater pond fish species; only two other Cyprinids (silver carp and grass carp) are bred in higher amounts. Carp is native all over Asia and in a large part of Europe. As a result of human intervention, at present, carp are widespread all over the world, except for the Arctic region. Carp breeding was launched in the antique period, in the ancient Chinese Empire and the Roman Empire. The presently applied method of breeding of common carp has a long evolution. From the effectiveness point of view, the propagation and early-life nursing are crucial parts of carp production, as they provide seed stocks for the further growing section. Without effective propagation, there is no intensive carp production. Nowadays, more advanced propagation methods are available all over the world; however, in the current review, only the main milestones and production efficiency of the propagation and nursing method used in the ponds of Eastern Central Europe are discussed. In the historical overview of carp reproduction, first the natural reproduction, then the semi-extensive and intensive hatchery propagation are presented and investigated in detail. The analysis focuses on the advantages and disadvantages of the method. In particular, the different important milestones of the advanced hatchery method are shown and explained. The effectiveness is proven even with practical calculations. Not only the reproduction, but the pond nursing method is also presented and discussed, concentrating on the management of evolutionarily adapted natural feeds (Zooplankton) and their effect on the survival of fish larvae. Full article
(This article belongs to the Special Issue Innovative Aquaculture and Fish Reproduction)
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