Topical Collection "Proceedings of Experts on Aquatic Life (PEAL)"

Editors

Prof. Dr. Wonchoel Lee
E-Mail Website
Guest Editor
Department of Life Science, College of Natural Sciences, Hanyang University, Seoul 04763, Korea
Interests: taxonomy; Copepoda; Harpacticoida; Foraminifera; jellyfishes; meiofauna; zooplankton; marine diversity
Special Issues, Collections and Topics in MDPI journals
Dr. Bum Soo Park
E-Mail Website
Guest Editor
KIOST (Korea Institute of Ocean Science & Technology), Busan, Korea
Interests: phytoplankton; microbial ecology; molecular ecology
Special Issues, Collections and Topics in MDPI journals

Topical Collection Information

MEAL (Meeting of Experts on Aquatic Life: https://wlee11.wixsite.com/meal) is an online scientific meeting platform for researchers on aquatic organisms: from microbes and fungi to plants and animals. MEAL was established in June 2020 in the middle of the Covid-19 pandemic, and aims to continue scientific activities, and communications among the experts on aquatic organisms. It has one regular online meeting in a year. The first MEAL is served on November 11, 2020 through an online format. PEAL is the proceedings of MEAL, and will sound every year in Diversity. The scope of MEAL is broad, and all studies on taxonomy, ecology, and biodiversity of aquatic organisms including benthos, plankton, and nekton are welcome.

Prof. Dr. Wonchoel Lee
Dr. Bum Soo Park
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 collection 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.

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1900 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

  • taxonomy
  • ecology
  • marine
  • freshwater
  • meiofauna
  • macrofauna
  • plankton
  • algae
  • invertebrate
  • vertebrate

Published Papers (8 papers)

2022

Jump to: 2021, 2020

Article
Morphological and Molecular Studies of Three New Diatom Species from Mountain Streams in South Korea
Diversity 2022, 14(10), 790; https://doi.org/10.3390/d14100790 - 23 Sep 2022
Viewed by 135
Abstract
In January 2019, epilithic diatoms were collected from two streams on Mount Gumdan and Mount Yongma near Lake Paldang in central South Korea. A total of 16 diatoms were isolated and classified by molecular and morphological analysis. Morphology was studied by LM and [...] Read more.
In January 2019, epilithic diatoms were collected from two streams on Mount Gumdan and Mount Yongma near Lake Paldang in central South Korea. A total of 16 diatoms were isolated and classified by molecular and morphological analysis. Morphology was studied by LM and SEM, while the molecular study focused on small subunit (SSU) rRNA and ribulose bisphosphate carboxylase (rbcL) genes. Molecular analysis showed that the three species had clear differences in phylogenetic distance. Based on these findings, we studied the ultrastructure of three species. Among the morphological characteristics, Hannaea librata is longer but narrower and always has conical spines, while the similar species H. pamirensis has bifurcated spines in the central region and conical spines near the pole. Gomphonema seminulum is wider in the axial–central area than G. pumilium. Nitzschia inclinata has a bended valve apex, while N. oligotraphenta has a straight apex. Full article
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Article
Eight New Records of Siphonophores (Cnidaria: Hydrozoa) in Korean Waters
Diversity 2022, 14(6), 494; https://doi.org/10.3390/d14060494 - 17 Jun 2022
Viewed by 406
Abstract
Taxonomical research on siphonophores is lacking despite their high biodiversity. We collected siphonophores in Jeju and the southern coasts of Korea and conducted morphological redescriptions using multi-focus stacked digital images. As a result, we revealed eight unrecorded siphonophores (Abyla haeckeli, Ceratocymba [...] Read more.
Taxonomical research on siphonophores is lacking despite their high biodiversity. We collected siphonophores in Jeju and the southern coasts of Korea and conducted morphological redescriptions using multi-focus stacked digital images. As a result, we revealed eight unrecorded siphonophores (Abyla haeckeli, Ceratocymba leuckartii, Bassia bassensis, Dimophyes arctica, Lensia subtilis, Lensia subtiloides, Muggiaea atlantica, and Nanomia bijuga). Six genera, excluding Muggiaea, were reported for the first time in Korean waters, and subfamily Abylinae, to which Abyla haeckeli and Ceratocymba leuckartii belong, was also first recorded in Korea. The distributions and habitats of these species were summarized, with most of the species having cosmopolitan distributions but variations in individual size depending on environmental conditions. Phylogenetic analysis based on mtCOI was conducted for each family. Finally, we updated the species list of siphonophores in Korean waters to include 3 suborders, 5 families, 3 subfamilies, 14 genera, and 21 species. Our findings constitute baseline data for further research on Korean siphonophores. Full article
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Article
Four New Species of Zosimeidae (Copepoda: Harpacticoida) from the Southwestern Gulf of Mexico
Diversity 2022, 14(3), 198; https://doi.org/10.3390/d14030198 - 07 Mar 2022
Viewed by 728
Abstract
As a part of ongoing efforts for monitoring benthic ecosystem in the Gulf of Mexico, Harpacticoid copepods were collected from the southwestern Gulf of Mexico. Among them we report three new species of Zosime, and a new species of Peresime for the [...] Read more.
As a part of ongoing efforts for monitoring benthic ecosystem in the Gulf of Mexico, Harpacticoid copepods were collected from the southwestern Gulf of Mexico. Among them we report three new species of Zosime, and a new species of Peresime for the study area. Zosime is the most specious-rich genus in the family. Three species of Zosime were morphologically similar to Z. paratypica Becker and Schriever, 1979, Z. atlantica Bodin, 1968, and Z. destituta Kim J.G., Jung and Yoon, 2016, respectively. However, all three species have unique characteristics that distinguish them from similar species such as setal formulae and shape of female P5 and caudal rami. The new species of Peresime has similar morphological characters with P. reducta (Becker and Schriever, 1979). These two species can be distinguished by differences in mouth parts and the length of the setae on P2. This is the first report on the genera Zosime and Peresime from the Gulf of Mexico. We also discuss the global diversity and distribution of Zosimeidae and provide a key to the genera of the family and species of each genus, including the four new species from the Gulf of Mexico. Full article
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Article
Morphology and Molecular Phylogeny of Fuscheriides baugilensis sp. nov. (Protozoa, Ciliophora, Haptorida) from South Korea
Diversity 2022, 14(2), 70; https://doi.org/10.3390/d14020070 - 21 Jan 2022
Cited by 1 | Viewed by 765
Abstract
The morphology and molecular phylogeny of a new haptorid ciliate, Fuscheriides baugilensis sp. nov., discovered in a temporary pond in South Korea, were investigated. The new species is characterized by its small body size (30–55 × 15–20 μm in vivo), oblong to rod-shaped [...] Read more.
The morphology and molecular phylogeny of a new haptorid ciliate, Fuscheriides baugilensis sp. nov., discovered in a temporary pond in South Korea, were investigated. The new species is characterized by its small body size (30–55 × 15–20 μm in vivo), oblong to rod-shaped extrusomes in the oral bulge and cytoplasm, 14–16 somatic kineties, two dorsal brush rows, and single subapical ciliary condensation. The phylogenetic analyses based on the 18S rRNA gene sequences show that the family Fuscheriidae is paraphyletic and the species belong to the genera Fuscheriides and Pseudofuscheria cluster together in the same subclade, while Fuscheria is in a different subclade, suggesting that the subapical ciliary condensation characterizing the two former genera has a higher taxonomic value than the shape of extrusomes for genera separation. Full article
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2021

Jump to: 2022, 2020

Article
Two New Species of the Genus Longipedia Claus, 1863 (Copepoda: Harpacticoida: Longipediidae) from Korea, with an Update and a Key to Species
Diversity 2021, 13(11), 590; https://doi.org/10.3390/d13110590 - 19 Nov 2021
Cited by 2 | Viewed by 701
Abstract
Benthic harpacticoids were collected from Korean waters. Two species were identified as members of the genus Longipedia Claus, 1863, because they have an extremely elongated distal segment of the P2 endopod. Longipedia koreana sp. nov. is morphologically most closely related to L. [...] Read more.
Benthic harpacticoids were collected from Korean waters. Two species were identified as members of the genus Longipedia Claus, 1863, because they have an extremely elongated distal segment of the P2 endopod. Longipedia koreana sp. nov. is morphologically most closely related to L. nichollsi Wells, 1980 and L. scotti Sars, 1903, but it can clearly be distinguished from both species based on the following morphological characteristics: P1 coxa with strong spinules near the outer margin and the distal element being much bigger than the proximal elements, P2 coxa with a small inner seta on the anterior surface, P4 exopod first segment without an inner element, and the P5 with a rectangular exopod (more than 3.5 times as long as wide). L. ulleungensis sp. nov. is similar to L. brevispinosa Gurney, 1927, L. spinulosa Itô, 1981, and L. weberi Scott A., 1909. However, L. ulleungensis sp. nov. is characterized by the P2 coxa with a reduced inner seta, the P4 exopod second segment without an inner seta, and the anal operculum with a long median projection, a single spine, and a group of outer spines on each side. In a molecular analysis using the mitochondrial cytochrome c oxidase subunit I (COI) and 18S ribosomal RNA (18S rRNA) genes, the inter-specific variation was 22.525–23.102% and 1.325–1.382% of COI and 18S rRNA between the two new species, respectively. A key to the family Longipediidae is provided herein. Full article
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Article
New Records of Cubozoan and Scyphozoan Jellyfish from Sabah Waters, Malaysia
Diversity 2021, 13(9), 420; https://doi.org/10.3390/d13090420 - 31 Aug 2021
Cited by 2 | Viewed by 1062
Abstract
Jellyfish play a vital role in the ocean’s ecosystem, acting as a nursery for young fishes, crabs, and brittle stars, as well as a source of food for certain charismatic megafauna, such as sunfish and sea turtles. They also pose a threat to [...] Read more.
Jellyfish play a vital role in the ocean’s ecosystem, acting as a nursery for young fishes, crabs, and brittle stars, as well as a source of food for certain charismatic megafauna, such as sunfish and sea turtles. They also pose a threat to human activities, with jellyfish blooms negatively impacting fisheries, power generation, and tourism. However, very little information is available on the biodiversity of jellyfish within the waters of Borneo. Here, we present new records of jellyfish found along the coast of Sabah, Malaysia, located in northern Borneo, bordering the megadiverse region of the Coral Triangle. A total of six species belonging to two classes and six families hitherto not recorded to the state are reported, Chironex yamaguchii, Acromitus maculosus, Crambione mastigophora, Linuche aquila, Netrostoma sp., and Phyllorhiza punctata. Of these, two species (C. yamaguchii and L. aquila) are harmful to humans, with C. yamaguchii capable of causing human fatalities. Reports of harmful jellyfish are useful to the medical and tourism industry, as some of these species may inflict stings and adverse reactions to humans ranging from rashes and skin irritation to fatal envenomation. A checklist has also been provided for all collected jellyfish species from Sabah waters of Borneo, Malaysia. Full article
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2020

Jump to: 2022, 2021

Communication
Effects of Temperature and pH on the Egg Production and Hatching Success of a Common Korean Copepod
Diversity 2020, 12(10), 372; https://doi.org/10.3390/d12100372 - 26 Sep 2020
Cited by 5 | Viewed by 963
Abstract
The recent accelerated ocean acidification and global warming caused by increased atmospheric carbon dioxide may have an impact on the physiology and ecology of marine animals. This study was conducted to determine the egg production rate (EPR) and hatching success (EHS) of Acartia [...] Read more.
The recent accelerated ocean acidification and global warming caused by increased atmospheric carbon dioxide may have an impact on the physiology and ecology of marine animals. This study was conducted to determine the egg production rate (EPR) and hatching success (EHS) of Acartia ohtsukai in response to the combined effects of an increase in temperature and a lower pH. Acartiaohtsukai with fresh surface seawater were collected in the northwestern Yeoja Bay of Korea in September 2017. The temperature and pH conditions applied included two different pH levels (representing the present: 7.9 and the future: 7.6) and three temperature values (26 °C, 28 °C, and 30 °C). In the pH 7.9, EPR significantly increased with increased temperature, but in pH 7.6, it significantly decreased as the temperature increased. EHS was lower in pH 7.6 than in pH 7.9. These results suggest that changes in the marine environment due to global warming and ocean acidification may affect Acartia populations and cause overall fluctuations in copepods of the genus Acartia. Full article
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Article
Dasybranchus geojedoensis sp. nov. (Annelida: Capitellidae), a New Capitellid Species from Southern Korea
Diversity 2020, 12(8), 290; https://doi.org/10.3390/d12080290 - 24 Jul 2020
Viewed by 1330
Abstract
Dasybranchusgeojedoensis sp. nov., obtained from the soft sublittoral bottom in southern Korea, is described as a new species. This new species of Dasybranchus is easily distinguishable from its congeners by the protruded parapodial lobes in the final few thoracic chaetigers. Dasybranchus geojedoensis [...] Read more.
Dasybranchusgeojedoensis sp. nov., obtained from the soft sublittoral bottom in southern Korea, is described as a new species. This new species of Dasybranchus is easily distinguishable from its congeners by the protruded parapodial lobes in the final few thoracic chaetigers. Dasybranchus geojedoensis sp. nov. closely resembles D. bipartitus (Schmarda, 1861) in number and position of abdominal branchiae but differs in position of genital pores and lateral organs, range of thoracic tessellated chaetigers, and denticulation of the abdominal hooks. The partial mtCOI gene sequences of the new Korean species were significantly distinct from those of undescribed species of Dasybranchus from Australia. In this study, a key for known species of Dasybranchus is also provided. Full article
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