Nutrition, Physiology and Metabolism of Crustaceans

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

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 2172

Special Issue Editor

Prof. Dr. Fernando Vega-Villasante
E-Mail Website
Guest Editor
Laboratory of Water Quality and Experimental Aquaculture (LACUIC), Centro Universitario de la Costa, Universidad de Guadalajara, Puerto Vallarta, Mexico
Interests: native species; freshwater crustaceans; prawns; behavior; nutrition; culture; scientometrics

Special Issue Information

Dear Colleagues,

Crustacean aquaculture is one of the most profitable activities worldwide. However, an important challenge continues to be the feeding and nutrition of these organisms in captivity, due to the high costs of the ingredients used to formulate feed. The fundamental basis for a correct understanding of the biology of crustaceans, whether in culture or in their natural state, is focused on the detailed study of their physiology and, therefore, their metabolism, in order to achieve optimal development for the biological capacities of organisms. It is crucial to develop research in these areas, not only to create more efficient nutrition and cultivation techniques, but also to establish sustainable management plans that protect natural populations.

The purpose of this Special Issue is to increase knowledge on crustacean nutrition, physiology and metabolism through the dissemination of relevant and updated information. We seek to promote progress in this line of research, favoring more responsible practices that are respectful to the environment, with the aim of improving cultivation and guaranteeing sustainable management.

Prof. Dr. Fernando Vega-Villasante
Guest Editor

Manuscript Submission Information

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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

10 pages, 284 KiB  
Article
Partial Replacement of Fish Meal with Protein Hydrolysates in the Diet of Penaeus vannamei (Boone, 1934) during the Nursery Phase
Fishes 2024, 9(2), 75; https://doi.org/10.3390/fishes9020075 - 15 Feb 2024
Viewed by 357
Abstract
The objective was to evaluate the effects of partial replacement of fish meal with protein hydrolysates and a commercial product in the diets of Penaeus vannamei post-larvae on zootechnical performance, proximate chemical composition, digestive enzyme activity, and total hemocyte count. The experiment was [...] Read more.
The objective was to evaluate the effects of partial replacement of fish meal with protein hydrolysates and a commercial product in the diets of Penaeus vannamei post-larvae on zootechnical performance, proximate chemical composition, digestive enzyme activity, and total hemocyte count. The experiment was conducted in a clear water recirculation system comprising 24 experimental units, each with 30 shrimp with an average weight of 0.2 g. The treatments were control, chicken protein hydrolysate (CPH), enzymatic hydrolysate of chicken feathers, Aquabite®, CPH + maltodextrin, and CPH + yeast, with four replicates each. The inclusion level of the different protein sources evaluated was 6%. At the end of the experiment, all shrimp were counted, weighed, and measured to determine the zootechnical performance. The body and feed chemical compositions, as well as the enzymatic activities of the hepatopancreas and the total hemocyte count in the hemolymph, were analyzed. The data obtained were subjected to ANOVA and Tukey’s test. There was no statistical difference between the treatments in any of the analyzed parameters. The results showed that all the evaluated protein hydrolysates can be used as partial substitutes for fish meal in P. vannamei diets during the nursery phase, maintaining equivalent and adequate digestive enzyme activities, health, growth, and body composition of the shrimp, in addition to being ecologically sustainable ingredients. Full article
(This article belongs to the Special Issue Nutrition, Physiology and Metabolism of Crustaceans)
10 pages, 271 KiB  
Article
Different Protein Hydrolysates Can Be Used in the Penaeus vannamei (Boone, 1934) Diet as a Partial Replacement for Fish Meal during the Grow-Out Phase
Fishes 2024, 9(2), 73; https://doi.org/10.3390/fishes9020073 - 12 Feb 2024
Viewed by 467
Abstract
This study evaluated the inclusion of protein hydrolysates and a commercial product as a partial replacement for fish meals in the diet of Pacific white shrimp (Penaeus vannamei) during the grow-out phase. A recirculation system with 24 experimental units and a [...] Read more.
This study evaluated the inclusion of protein hydrolysates and a commercial product as a partial replacement for fish meals in the diet of Pacific white shrimp (Penaeus vannamei) during the grow-out phase. A recirculation system with 24 experimental units and a biological filter was used. The experimental design was completely randomized with six treatments: control; chicken protein hydrolysate (CPH); enzymatic hydrolysate of chicken feathers; Aquabite®; CPH + maltodextrin; CPH + yeast; and four replicates. After 50 days, the zootechnical performance and animal welfare parameters, centesimal carcass composition, digestive enzyme activity, and hemocyte count were evaluated. The treatments did not affect the zootechnical performance and total hemocyte count of the animals (p > 0.05). The evaluation of the antenna length indicated that all animals were in good health. The antenna length in treatment T5 was significantly greater (p > 0.05) than that in T4 and similar to that in treatments T3 and T6, demonstrating a positive influence of dietary protein hydrolysates. Concerning animal welfare, dietary protein hydrolysates influenced the length of the antenna (p < 0.05). The antenna length associated with different treatments indicated that the animals were in good welfare conditions in the production environment. With respect to body chemical composition, dry matter, ether extract, and ash were affected by the treatments (p < 0.05). Regarding the analysis of digestive enzymes, the treatments influenced the activities of amylase and trypsin (p < 0.05). The performance of the animals was satisfactory under all treatments, including enzymatic activity, demonstrating the possibility of using hydrolysates. Full article
(This article belongs to the Special Issue Nutrition, Physiology and Metabolism of Crustaceans)
12 pages, 1089 KiB  
Article
Effect of Feed Texture and Dimensions, on Feed Waste Type and Feeding Efficiency in Juvenile Sagmariasus verreauxi
Fishes 2023, 8(11), 553; https://doi.org/10.3390/fishes8110553 - 16 Nov 2023
Viewed by 1057
Abstract
The “messy” feeding behaviour of spiny lobsters remains an obstacle for formulated feed development. This study examined the relationship between feeding efficiency and feed waste by juvenile spiny lobster, Sagmariasus verreauxi, fed different formulated pellet diameters or lengths across two separate experiments. [...] Read more.
The “messy” feeding behaviour of spiny lobsters remains an obstacle for formulated feed development. This study examined the relationship between feeding efficiency and feed waste by juvenile spiny lobster, Sagmariasus verreauxi, fed different formulated pellet diameters or lengths across two separate experiments. Feed texture (hard and dry pellet, HDP; soft and moist pellet, SMP) was also examined. Juvenile lobsters were fed experimental feeds at 0.5% BW daily over a 6 h duration. The resulting feed waste was categorised as either feeding-related waste (FRW) or non-feeding-related waste (NFRW). For all feed types, the FRW increased with increasing pellet diameter and pellet length. The increase in FRW corresponded with a decrease in NFRW, particularly for HDP, resulting in no difference in total feed waste in any treatment investigated. Thus, even with improved feeding efficiency with small feed dimensions, feed intake was not improved. Feed leaching rate decreased with increasing pellet size, suggesting a more rapid decline in feed attractiveness for smaller pellets. This finding indicates that currently a counteractive interaction exists between pellet size and feed attractiveness and suggests improving attractiveness would further enhance feeding. Future research should aim at optimising feed dimensions simultaneously to support efficient feeding whilst enhancing attraction/gustatory stimulations. Full article
(This article belongs to the Special Issue Nutrition, Physiology and Metabolism of Crustaceans)
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