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Applied Sciences
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Advances in Aquatic Environmental Microbiology for Sustainable Fisheries and Aquaculture
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Advances in Aquatic Environmental Microbiology for Sustainable Fisheries and Aquaculture

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 4408

Special Issue Editors

Prof. Dr. Ichiro Imai

E-Mail Website
Guest Editor
Graduate School of Fisheries Sciences, Hokkaido University, 3-1-1 Minato-cho, Hakodate, Hokkaido 041-8611, Japan
Interests: life cycle strategies of the fish-killing raphidophyte Chattonella in temperate coastal sea and the bloom dynamics in relation with life cycle; biological control of HABs utilizing nutrient-competing diatoms; algicidal bacteria inhabiting on the surface of seaweeds and seagrasses
Dr. Nobuharu Inaba

E-Mail Website
Guest Editor
Civil Engineering Research Institute for Cold Region, Public Works Research Institute, Sapporo City, Hokkaido 062-8602, Japan
Interests: aquatic biological science; microbial communities; environmental restoration; food production; biological engineering

Special Issue Information

Dear Colleagues,

A recent estimate states that the global population will reach 9.7 billion in 2050 (an increase of two billion people worldwide in the next 30 years), according to the United Nations World Population Prospect 2019. To meet the world's growing demands for seafood, fisheries are expected to play a pivotal role in global food security. On the other hand, expanding anthropogenic activities had resulted in deteriorated aquatic ecosystems through various causes, posing threats for fisheries worldwide. It is urgent to propose effective and progressive responses as well as a sustainable way to mitigate and adapt to these changes. We gradually came to understand that microbes play key roles to recover anthropogenically imbalanced aquatic environments.

In this Special Issue of Applied Sciences entitled “Advances in Aquatic Environmental Microbiology for Sustainable Fisheries and Aquaculture”, we welcome articles related to the ecology, interaction, and application of marine microbes, contributing to the development of future sustainable fisheries and aquaculture. For example, the relating fields would be microbes involved in the prediction and mitigation of harmful algal blooms, suitable microbial foods for juvenile of important species of aquaculture and fisheries, bioremediation, and microbial ecology in the sea, etc. 

Prof. Dr. Ichiro Imai
Dr. Nobuharu Inaba
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. Applied Sciences is an international peer-reviewed open access semimonthly 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 2400 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

  • marine microbial ecology
  • microbial interaction
  • bioremediation
  • fishery
  • aquaculture sustainability
  • harmful algal blooms

Published Papers (2 papers)

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Research

12 pages, 4380 KiB  
Article
An Easy-to-Use Histological Technique for Small Biological Samples of Senegalese Sole Larvae
by Lígia M. B. M. Santana, Évila Pinheiro Damasceno, Susana Loureiro, Amadeu M. V. M. Soares, Pedro Pousão-Ferreira, Denis M. S. Abessa, Roberto Martins and Maria D. Pavlaki
Appl. Sci. 2023, 13(4), 2346; https://doi.org/10.3390/app13042346 - 11 Feb 2023
Viewed by 2207
Abstract
Histological techniques are a traditional and essential tool for adequately comprehending cellular morphology and physiology in several scientific fields, including ecotoxicological studies. Although bioassays generally recommend using small test organisms, based on advantages such as low maintenance costs and the possibility of a [...] Read more.
Histological techniques are a traditional and essential tool for adequately comprehending cellular morphology and physiology in several scientific fields, including ecotoxicological studies. Although bioassays generally recommend using small test organisms, based on advantages such as low maintenance costs and the possibility of a higher number of replicates, the histological process of such organisms is still challenging due to the difficulty of handling them. The present study proposes an accessible protocol for performing the histology of a biological sample of 8 mm maximum length and using histopathological biomarkers in Senegal sole larvae for ecotoxicological tests. Eight-day old larvae of Solea senegalensis obtained from breeders’ natural spawns in cultivation conditions were submitted to histological processing by an adjusted protocol comprising fixation, agarose array pre-embedding, dehydration, paraffin embedding, slides’ preparation, and image analysis by light optical microscope coupled to a digital camera. Low-cost and easy-to-use alternatives were applied in the technique execution. The histological steps were detailed, and S. senegalensis morphological features were presented. This can be considered valuable background information for ecotoxicological studies where changes in cell morphology and physiology are expected. Full article
(This article belongs to the Special Issue Advances in Aquatic Environmental Microbiology for Sustainable Fisheries and Aquaculture)
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14 pages, 3945 KiB  
Article
Distribution of Diatom Resting Stages in Sediment near Artificial Reefs Deployed in the Dysphotic Zone: Exploration of New Artificial Reef Function
by Takuma Matsumoto, Kenya Sudo, Ken-Ichiro Ishii, Ayako Imura and Nobuharu Inaba
Appl. Sci. 2022, 12(19), 9972; https://doi.org/10.3390/app12199972 - 4 Oct 2022
Viewed by 1690
Abstract
Artificial reefs (ARs) have multiple beneficial effects involved in increased fishery production. The present study investigated diatom resting stages in the sediments near ARs at a depth of about 90 m by the combined use of direct microscopic observation and the MPN method, [...] Read more.
Artificial reefs (ARs) have multiple beneficial effects involved in increased fishery production. The present study investigated diatom resting stages in the sediments near ARs at a depth of about 90 m by the combined use of direct microscopic observation and the MPN method, seeking a novel function of AR deployment that potentially increases biological production. Although the concentration of diatom resting stages at A2 (north end station of the AR area), composed mainly of Chaetoceros, was ten times the concentration at A5 (non-reef station), the concentration at A1 (south end station of the AR area) was the same level as at A5. These results suggest that the AR contributes to the accumulation of diatom resting stages while the degree of accumulation is attributed to the arrangement of ARs and their physical environment such as flow directions. Interestingly, live pennate diatoms possessing photosynthetic pigments were constantly observed in all samples despite the low light intensity (≤1.2 µmol photons m−2 s−1), which provides new ecological insight into their biological and physiological characteristics. In this study, the distribution of viable diatom resting stages and live pennate diatoms in the sediment around ARs in a dysphotic zone was revealed for the first time, casting a light on the novel function of ARs potentially enhancing primary production around them. Full article
(This article belongs to the Special Issue Advances in Aquatic Environmental Microbiology for Sustainable Fisheries and Aquaculture)
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