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Diversity
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Selected Papers from International Conference on Marine Science and Aquaculture
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Selected Papers from International Conference on Marine Science and Aquaculture

A special issue of Diversity (ISSN 1424-2818). This special issue belongs to the section "Marine Diversity".

Deadline for manuscript submissions: closed (30 August 2022) | Viewed by 7680

Special Issue Editors

Dr. Balu Alagar Venmathi Maran

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Guest Editor
Borneo Marine Research Institute, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia
Interests: aquaculture; fish parasite; marine parasitology; taxonomy; control of parasites; natural products; parasitic copepods
Dr. Teruaki Yoshida

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Guest Editor
Borneo Marine Research Institute, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia
Interests: zooplankton ecology; copepod physiology; microplastics; HAB
Prof. Dr. Susumu Ohtsuka

E-Mail Website
Guest Editor
Takehara Station, Setouchi Field Science Center, Graduate School of Integrated Sciences for Life, Hiroshima University, Takehara City, Hiroshima 725-0024, Japan
Interests: taxonomy; ecology; invertebrate; symbiosis; phylogeny; fish; mysids; copepods; parasite; jellyfish
Dr. Yoshiki Takayama

E-Mail Website
Guest Editor
Institute of Plankton Eco-engineering, Soka University, Tokyo 192-8577, Japan
Interests: zooplankton ecology; copepod physiology; copepod mass cultivation; microalgae mass cultivation

Special Issue Information

Dear Colleagues,

The first "Annual Seminar on Marine Science and Aquaculture" commenced in 2003, organized by Universiti Malaysia Sabah at Kota Kinabalu. It provided a platform to exchange knowledge about the marine ecosystems and development of aquatic food resources through sustainable fisheries and aquaculture. From 2014, this annual event was rebranded and is now known as the “International Conference on Marine Science and Aquaculture (ICOMSA)”. The theme for current ICOMSA 2022 is "The Ocean We Want Towards Sustainable Development". This topic is of global relevance and is particularly important, where marine ecosystem services play a significant role in socio-economic development, aquaculture industry and seafood security. The conference program is structured to include papers dealing with overcoming the challenges through innovative solutions. Our goal is to demonstrate how science and new ideas can provide the best possible solutions to our ever-changing marine environment and addressing existing and evolving challenges which are critical for ocean ecosystem balance and sustainability of benefits we derive from ocean-based economies such as fisheries, aquaculture, and ecotourism. This is the first year we plan to collaborate with MDPI to publish some of our outstanding research and review works in the journal “Diversity” (MDPI) as a special issue. Hence, we welcome the participants to attend, present in the conference and publish your high-quality papers in this special issue.

Dr. Balu Alagar Venmathi Maran
Dr. Teruaki Yoshida
Prof. Dr. Susumu Ohtsuka
Dr. Yoshiki Takayama
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. Diversity 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

  • marine biodiversity and conservation
  • marine pollution and ocean health
  • climate change: mitigation and adaptation
  • aquaculture & fisheries
  • seafood safety and security
  • aquaculture nutrition, diseases and health management
  • citizen science, awareness and education
  • remote sensing and coastal oceanography
  • blue economy of coastal communities

Published Papers (3 papers)

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Research

12 pages, 1596 KiB  
Article
Antiparasitic Potential of Methanol Extract of Brown Alga Sargassum polycystum (Phaeophyceae) and Its LC-MS/MS Metabolite Profiling
by Fatin Khairah Haron, Muhammad Dawood Shah, Yoong Soon Yong, Jen Kit Tan, Mohammad Tamrin Mohamad Lal and Balu Alagar Venmathi Maran
Diversity 2022, 14(10), 796; https://doi.org/10.3390/d14100796 - 24 Sep 2022
Cited by 4 | Viewed by 2870
Abstract
In Southeast Asian nations, cultured hybrid groupers are facing serious infestation by the marine parasitic leech Zeylanicobdella arugamensis (Annelida, Hirudinea). They attach to the hybrid groupers by sucking and biting on the surface of the skin, paving the way for secondary infection upon [...] Read more.
In Southeast Asian nations, cultured hybrid groupers are facing serious infestation by the marine parasitic leech Zeylanicobdella arugamensis (Annelida, Hirudinea). They attach to the hybrid groupers by sucking and biting on the surface of the skin, paving the way for secondary infection upon the fish. The objective of the study is to utilize the locally available seaweed to control the infestation of parasitic leeches. The methanol extracts of the brown alga Sargassum polycystum C. Agardh, 1824 (Phaeophyceae) from Sabah were prepared and investigated for antiparasitic efficacy against Z. arugamensis through in vitro bioassay. A total of 126 adult leeches from the host hybrid groupers were obtained from the fish hatchery. The parasitic leeches were treated with the methanol extracts of S. polycystum for 180 min by preparing five different dosages at concentrations of 100, 50, 25, 12.5, and 6.25 mg/mL. The brown alga was found to have high antiparasitic efficacy, resulting in 100% leech mortality over a short period of time. It showed the highest antiparasitic efficacy (total mortality of leeches) in a short time limit of 0.96 ± 0.44 min, for 100 mg/mL of the extract. Observations on leech behavior in the positive control and the seaweed extract treatments showed vigorous swimming before mortality. LC-MS/MS analysis was used to reveal the phytochemical composition of the extract to understand the nature of the main components responsible for its antiparasitic activities. A total of 29 metabolites were identified via Q Exactive HF Orbitrap mass spectrometry, including two flavonoids (ephedrannin A and hinokiflavone), two organoarsenics (1-dimethylarsinoyl-heptadecane and cacodylic acid), four heterocyclic compounds, and two chlorophyll breakdown products. The presence of bioactive compounds could increase the mortality rate of parasitic leeches. Thus, this study concludes that the brown alga showed high efficacy in its antiparasitic activities and can be effectively applied for treatment in grouper aquaculture farms for sustainable aquaculture. Full article
(This article belongs to the Special Issue Selected Papers from International Conference on Marine Science and Aquaculture)
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13 pages, 6458 KiB  
Article
A New Species of Parasitic Copepod, Nemesis santhadevii (Siphonostomatoida: Eudactylinidae) from the Gills of the Coral Catshark Atelomycterus marmoratus, from Kota Kinabalu, Malaysia
by Balu Alagar Venmathi Maran, Panakkool Thamban Aneesh and Seong Yong Moon
Diversity 2022, 14(9), 759; https://doi.org/10.3390/d14090759 - 14 Sep 2022
Cited by 1 | Viewed by 1883
Abstract
The copepod Nemesissanthadevii sp. nov. (Siphonostomatoida: Eudactylinidae), which is parasitizing the gill filaments of the Coral catshark Atelomycterus marmoratus (Anonymous (Bennett), 1830) off Kota Kinabalu waters, Malaysia, is described and illustrated in this article. The new species Nemesis santhadevii prominently differs from [...] Read more.
The copepod Nemesissanthadevii sp. nov. (Siphonostomatoida: Eudactylinidae), which is parasitizing the gill filaments of the Coral catshark Atelomycterus marmoratus (Anonymous (Bennett), 1830) off Kota Kinabalu waters, Malaysia, is described and illustrated in this article. The new species Nemesis santhadevii prominently differs from its congeners in the following features: (1) the cephalothorax sub-circular is 1.3 times as wide as long and overlapping the second pedigerous somite; (2) the fifth somite is 0.4 times the width of the fourth; (3) the genital double somite is slightly narrower than the fifth; (4) the lowest cephalothoracic shield’s body length (0.20:1) proportion; (5) the caudal rami is ovate, it has two large and three small setae; (6) and the second somite has antenna with a patch of 34–38 spinules. It is the first record of parasitic eudactilinid copepod from Sabah, East Malaysia. A checklist of global valid species of Nemesis Risso, 1826, is provided. Full article
(This article belongs to the Special Issue Selected Papers from International Conference on Marine Science and Aquaculture)
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10 pages, 4166 KiB  
Article
Delayed Signs of UV-C Damage to Chlorella sp. Observed through Fluorescent Staining
by Wei Qing Chloe Lung, Han-Yang Yeh, Sheng-Jie Yang, Chin-Yi Huang, Fan-Hua Nan and Meng-Chou Lee
Diversity 2022, 14(5), 376; https://doi.org/10.3390/d14050376 - 07 May 2022
Cited by 4 | Viewed by 1966
Abstract
Ultraviolet (UV-C) irradiation is the most important part of water filtration, which has no side effects on the environment and has been used in water purification systems in the aquaculture and transistor industries. In this research, the effect of UV-C on Chlorella sp. [...] Read more.
Ultraviolet (UV-C) irradiation is the most important part of water filtration, which has no side effects on the environment and has been used in water purification systems in the aquaculture and transistor industries. In this research, the effect of UV-C on Chlorella sp. was investigated. Chlorella sp. was irradiated 0, 1, 2 or 3 times at a fixed flow rate of 6.5 L min−1 and the effects of UV-C LED on the apoptosis rate and death rate of Chlorella sp. were analyzed by flow cytometry after staining cells with the nucleic acid dye SYTOX Green and the membrane-associated protein stain Annexin V-PE Reagent. As a result of UV-C irradiation, the Chlorella sp. cells underwent phosphatidylserine (PS) ectropion and plasma membrane damage, which resulted in death. The effect of UV-C was proportional to the number of times of irradiation. Three doses of UV-C LED irradiation resulted in a 91.76 ± 3.33% death rate, as observed through SYTOX Green staining, with no rebound within 72 h. This research is the first report to observe that delayed cellular apoptosis occurred in Chlorella sp., and we expect that our study can be used as a standard reference for future industrial applications. Full article
(This article belongs to the Special Issue Selected Papers from International Conference on Marine Science and Aquaculture)
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