Newly recorded unarmored dinoflagellates in the family Kareniaceae (Gymnodiniales, Dinophyceae) in brackish and coastal waters of Korea

2021 ◽  
Vol 39 (2) ◽  
pp. 236-244
Author(s):  
Minji Cho ◽  
◽  
Hojoon Choi ◽  
Seung Won Nam ◽  
Sunju Kim
Keyword(s):  
Coastal Waters ◽  
The Family

scholarly journals Isolation and Phylogenetic Analysis of Novel Viruses Infecting the Phytoplankton Phaeocystis globosa (Prymnesiophyceae)

2004 ◽  
Vol 70 (6) ◽  
pp. 3700-3705 ◽  
Author(s):  
C. P. D. Brussaard ◽  
S. M. Short ◽  
C. M. Frederickson ◽  
C. A. Suttle
Keyword(s):  
Phylogenetic Analysis ◽  
Dna Polymerase ◽  
Coastal Waters ◽  
Common Ancestor ◽  
Genetic Relatedness ◽  
Amino Acid Sequences ◽  
Polymerase Gene ◽  
Phaeocystis Globosa ◽  
The Family ◽  
Algal Host

ABSTRACT Viruses infecting the harmful bloom-causing alga Phaeocystis globosa (Prymnesiophyceae) were readily isolated from Dutch coastal waters (southern North Sea) in 2000 and 2001. Our data show a large increase in the abundance of putative P. globosa viruses during blooms of P. globosa, suggesting that viruses are an important source of mortality for this alga. In order to examine genetic relatedness among viruses infecting P. globosa and other phytoplankton, DNA polymerase gene (pol) fragments were amplified and the inferred amino acid sequences were phylogenetically analyzed. The results demonstrated that viruses infecting P. globosa formed a closely related monophyletic group within the family Phycodnaviridae, with at least 96.9% similarity to each other. The sequences grouped most closely with others from viruses that infect the prymnesiophyte algae Chrysochromulina brevifilum and Chrysochromulina strobilus. Whether the P. globosa viruses belong to the genus Prymnesiovirus or form a separate group needs further study. Our data suggest that, like their phytoplankton hosts, the Chrysochromulina and Phaeocystis viruses share a common ancestor and that these prymnesioviruses and their algal host have coevolved.

Caligids-potential pathogens for marine finfish aquaculture in Mexico?

2017 ◽  
Vol 44 (3) ◽  
pp. 433-441
Author(s):  
Francisco Neptalí Morales-Serna ◽  
Juan Manuel Martínez-Brown ◽  
Rosa Maria Medina-Guerrero ◽  
Emma Josefina Fajer-Ávila
Keyword(s):  
Coastal Waters ◽  
Host Location ◽  
Current Knowledge ◽  
Control Strategies ◽  
Sea Lice ◽  
Ecological Studies ◽  
Parasitic Copepods ◽  
The Family ◽  
And Control ◽  
Finfish Aquaculture

Parasitic copepods of the family Caligidae, the so-called sea lice, may be deleterious to marine or brackish finfish aquaculture. To date, biological and ecological studies of sea lice have been mostly restricted to species from cold or temperate regions. In Mexico there are some records of sea lice species on marine fishes; however, the research regarding their biology and ecology has been scarce. It is possible that a high biodiversity of sea lice is distributed in coastal waters of Mexico; therefore, their significance as pathogenic parasites should increase. The purpose of this review is to outline the current knowledge of the life cycle, host location, ecology, effect on fish health, and control strategies of sea lice in order to establish supportive basis for natural resource management and control of parasites and diseases of marine fish cultured in Mexico.

Distribution of Diplolaimella and Diplolaimelloides species from Patagonian lagoons and coastal waters (Nematoda: Monhysteridae), Chubut and Santa Cruz provinces (Argentina)

2009 ◽  
Vol 89 (4) ◽  
pp. 711-718 ◽  
Author(s):  
Catalina T. Pastor de Ward ◽  
Virginia Lo Russo
Keyword(s):  
New Species ◽  
Coastal Waters ◽  
East Coast ◽  
Santa Cruz ◽  
Coastal Salt Marsh ◽  
Salty Water ◽  
The Family ◽  
Two New Species ◽  
New Localities ◽  
First Time

This paper focuses on Diplolaimella and Diplolaimelloides two very cosmopolitan genera inhabiting lotic freshwater to salty water inland, groundwater and coastal waters systems, providing a review of their taxonomy with new keys, and their distribution on the east coast of Patagonia and inland Patagonia. Two new species belonging to the genus Diplolaimelloides of the family Monhysteridae are described from Patagonian salty lagoons and coastal areas, and the Chubut and Santa Cruz provinces of Argentina: Diplolaimelloides tehuelchus sp. nov. has four bursal and three postcloacal papillae, short gubernaculum, and spicules longer than 50 μm; it has been found in Patagonian salty lagoons and in high coastal salt marsh areas. Diplolaimelloides warwicki sp. nov. is characterized by the angular shape of the spicules and the long gubernaculum. Diplolaimella ocellata is recorded for the first time in Patagonian salty lagoons and new localities in coastal waters are recorded for Diplolaimella gerlachi Pastor de Ward, 1984.

Numerical taxonomy of Vibrionaceae from Newfoundland coastal waters

1994 ◽  
Vol 40 (5) ◽  
pp. 355-361 ◽  
Author(s):  
Jennifer Martin-Kearley ◽  
John A. Gow
Keyword(s):  
Numerical Analysis ◽  
Coastal Waters ◽  
Numerical Taxonomy ◽  
Incubation Temperature ◽  
Placopecten Magellanicus ◽  
Arginine Dihydrolase ◽  
Alaria Esculenta ◽  
The Family ◽  
Vibrio Ordalii ◽  
Positive Results

Numerical analysis was used to characterize 111 Vibrionaceae strains. These included 31 reference cultures belonging to the genera Aeromonas, Listonella, and Vibrio and 80 strains isolated from the seasonally cold coastal waters of Newfoundland. The sources of the regional strains were the brown alga Alaria esculenta and the giant scallop Placopecten magellanicus. Most of the regional strains grew at temperatures associated with psychrotrophs, while a small proportion may have been psychrophilic. All of the regional strains grew at 4 °C. A routine incubation temperature of 20 °C was chosen and in tests for utilization of organic components as sole sources of carbon and energy the strains were incubated for 3 weeks rather than the more common 6-day period. The treatment of weak positive results as weak positive, positive, or negative was investigated and it was decided that the general conclusions reached in the study would not be significantly altered by the interpretation of weak positive results. Using numerical analysis it was shown that most of the strains clustered according to source. Most reference cultures were more closely related to each other than they were to the regional strains. Some strains were phenotypically similar to Vibrio splendidus biovar I, which is arginine dihydrolase positive. Although there were differences, some strains were similar to the fish pathogen Vibrio ordalii, which is negative for arginine dihydrolase. Both species are reported to grow at 4 °C. It was shown that most of the regional Vibrionaceae strains studied were different from previously described species belonging to the family Vibrionaceae.Key words: numerical taxonomy, Vibrionaceae, Vibrio, marine bacteria, psychrotroph.

scholarly journals Habitat segregation of Gerres japonicus and G. limbatus in early stages in the Tien Yen estuary, Northern Vietnam

2018 ◽  
Vol 40 (4) ◽  
Author(s):  
Thanh Trung Tran ◽  
Hau Duc Tran ◽  
Nam Hoang Chu ◽  
Thuy Thi Ta
Keyword(s):  
Coastal Waters ◽  
Early Life History ◽  
Nursery Ground ◽  
Middle Reach ◽  
Northern Vietnam ◽  
Early Stages ◽  
The Family ◽  
Salinity Preference ◽  
Commercially Important ◽  
The Difference

Silver-biddy (Gerreidae: Gerres) are commercially important euryhaline fishes in coastal waters; however, information about their distribution during early stages in estuarine environments is poorly known. The present study aims to elucidate the habitat utilization of two species of the family, Gerres japonicus and G. limbatus as larvae and juveniles based on monthly collections from 2013 to 2015 in the Tien Yen estuary, northern Vietnam. They occurred from April to June for G. japonicus and in April and May for G. limbatus with a peak in May for both the species. Both G. japonicus and G. limbatus used the Tien Yen estuary as a nursery ground; however, the former species that colonized the shallows along the banks of the estuary extended to near freshwater habitat, whereas the latter was found at the end of the upper reach and the middle reach. The difference habitat use between the two species in the early life history may be related to their specific salinity preference as G. japonicus prefer lower salinities than G. limbatus.

scholarly journals First record of a reticulated toadfish, Arothron reticularis (Tetraodontiformes: Tetraodontidae), in Korea

2020 ◽  
Vol 23 (1) ◽  
Author(s):  
Chung-Bae Kang ◽  
Sang-Hwa Lee ◽  
Tae-Sik Yu ◽  
Hae-Rim Lee ◽  
Kyeong-Ho Han
Keyword(s):  
Maximum Likelihood ◽  
Coastal Waters ◽  
Morphological Characteristics ◽  
First Record ◽  
The Body ◽  
Single Specimen ◽  
White Line ◽  
Maximum Likelihood Tree ◽  
White Spots ◽  
The Family

AbstractA single specimen of Arothron reticularis (398 mm in total length), belonging to the family Tetraodontidae, was collected in the coastal waters off Hansan island using a set net in May 2019. The morphological characteristics of the specimen are as follows: large eyes and mouth, white spots on the body, and a white line surrounding the eyes in an annular shape. A result of maximum likelihood tree showed that A. reticularis is related to A. hispidus (93.6%). We proposed the Korean name “Geu-murl-mu-nui-kkeo-kkeurl-bok,” in accordance with the characteristics of the specimen.

scholarly journals Taxonomy and morphology of four "ophrys-related" scuticociliates (Protista, Ciliophora, Scuticociliata), with the description of a new genus, Paramesanophrys gen. nov.

2016 ◽  
Author(s):  
Xuming Pan ◽  
Xinpeng Fan ◽  
Saleh A. Al-Farraj ◽  
Shan Gao ◽  
Ying Chen
Keyword(s):  
South China Sea ◽  
South China ◽  
Coastal Waters ◽  
Type Species ◽  
New Genus ◽  
Original Description ◽  
Basal Bodies ◽  
Ciliated Protozoa ◽  
Marine Habitat ◽  
The Family

Generally, “ophrys- related” scuticociliates belong to a specialised group of ciliated protozoa that may act as commensals or pathogens of fishes and crustaceans. In the present study, four “ophrys- taxa” scuticociliates, i.e., Paramesanophrys typica gen. et sp. nov., Mesanophrys carcini (Grolière & Léglise, 1977) Small & Lynn in Aescht, 2001, Metanophrys sinensis Song & Wilbert, 2000, and Metanophrys similis Song et al., 2002, were collected from Chinese coastal waters or mariculture ponds and investigated. Paramesanophrys gen. nov. is assigned to the family Orchitophryidae and differs from its other genera mainly by the position of the paroral membrane relative to membranelle 1–3, i.e., the membrane extends anteriorly to the posterior end of membranelle 3. The type species P. typica gen. et sp. nov., is defined by an elongated body with the posterior end depressed where the caudal cilium is located; 20 or 21 somatic kineties; double-rowed membranelle 1 with eight to ten basal bodies in each kinety; irregularly multi-rowed membranelle 2 and membranelle 3; scutica comprising c. seven or eight kinetosome pairs; a single macronuclear nodule; and marine habitat. The redescription of the three previously known species can be summarized as follows: 1) improved diagnosis is provided for Metanophrys sinensis Song & Wilbert, 2000 based on the original description and the present study; 2) some population-dependent characteristics of our new Mesanophrys carcini isolate are presented; 3) Metanophrys similis, collected from the South China Sea, resembles the original Qingdao population.

Mexicope sushara sp. nov., the first New Zealand record of the isopod crustacean family Acanthaspidiidae (Asellota)

Zootaxa ◽  
2004 ◽  
Vol 489 (1) ◽  
pp. 1
Author(s):  
NIEL L. BRUCE
Keyword(s):  
New Zealand ◽  
Continental Shelf ◽  
Coastal Waters ◽  
First Record ◽  
The Pacific ◽  
The Family

Mexicope sushara sp. nov. is recorded from southeastern New Zealand coastal waters, the first record of the genus from the Pacific and the first record of the Acanthaspidiidae from New Zealand. The species is from the continental shelf, taken in association with a bryozoan colony at a depth of 80 metres on the Otago Shelf, southeastern South Island. The distinguishing characters are a rostral spine and prominent and acute pre-ocular lobes; these characters in conjunction with stalked eyes separate the species from all others in the family.

scholarly journals New species and new record of anthomedusae from southern Brazil

1966 ◽  
Vol 15 (1) ◽  
pp. 85-89 ◽  
Author(s):  
M. Vannucci ◽  
M. G. B. Soares Moreira
Keyword(s):  
New Species ◽  
Coastal Waters ◽  
New Record ◽  
Sexual Maturity ◽  
Water Mass ◽  
The Other ◽  
Similar Species ◽  
Southern Brazil ◽  
The Family ◽  
A New Species

A new species of Hydromedusa belonging to the genus Octocanna Haeckel 1879, here revived, is described from the coastal waters off Santos. The new species belongs to the family Phialuciidae, it is named Octocanna haeckeli sp. n. and differs from the other two species of the genus in being smaller, in having a high dome shaped umbrella, four tentacles, eight bulbs and eight marginal vesicles at sexual maturity. The genus Octocanna is here revived for Phialuciidae with eight radial canals, eight gonads, four or more tentacles and never more than four lips. The genus Octophialucium Kramp 1955 is considered valid for Phialuciidae with eight radial canals, eight gonads and eight lips. In the same series of samples, some specimens of Octophialucium bigelowi Kramp 1955 were taken which are very similar to Octocanna haeckeli but have eight lips, eight tentacles, rudimentary bulbs and a larger number of marginal vesicles at sexual maturity, which is reached at approximately the same umbrella size. The two similar species were taken in the same water mass at approximately the same time of the same year.

The enigmatic bivalve genus Paramya (Myoidea: Myidae): symbiotic association of an East Asian species with spoon worms (Echiura) and its transfer to the family Basterotiidae (Galeommatoidea)

2016 ◽  
Vol 97 (7) ◽  
pp. 1447-1454 ◽  
Author(s):  
Ryutaro Goto ◽  
Hiroshi Ishikawa ◽  
Yoichi Hamamura
Keyword(s):  
Coastal Waters ◽  
East Asian ◽  
Shell Morphology ◽  
The Other ◽  
Phylogenetic Position ◽  
Symbiotic Association ◽  
Morphological Examination ◽  
The Family ◽  
The Seto Inland Sea ◽  
Molecular Phylogenetic

Paramya is an enigmatic genus of Myidae (Bivalvia: Heterodonta: Myoidea) that includes three uncommon species: Paramya subovata (Conrad, 1845), Paramya recluzi (A. Adams, 1864) and Paramya africana Cosel, 1995. Paramya subovata is known as a commensal living in the burrow of the spoon worm Thalassema hartmani Fisher, 1947 (Annelida: Echiura: Thalassematidae), in North American coastal waters. However, the biology of the other two species remains unknown. In this study, we found P. recluzi living in the burrows of the two thalassematid echiuran species, Ikedosoma gogoshimense (Ikeda, 1904) and Arhynchite hayaoi Tanaka & Nishikawa, 2013, in intertidal flats in the Seto Inland Sea, Japan. Paramya recluzi was embedded in the burrow wall with its short siphons protruding into the host burrow lumen for respiration and filter feeding. To determine the phylogenetic position of P. recluzi, we performed a molecular phylogenetic analysis using the 18S, 28S, COI and H3 genes. Molecular analysis showed that P. recluzi belongs not to the family Myidae, but to the genus Basterotia (Galeommatoidea: Basterotiidae). Morphological examination of P. recluzi revealed that this species has many similarities with Basterotia (e.g. a single cardinal tooth on each valve and short siphons surrounded by tentacles). Thus, we propose that this species should be transferred from the genus Paramya to Basterotia. In addition, we also suggest that the other two species of Paramya (P. subovata and P. africana) should be transferred to the family Basterotiidae based on their shell morphology, anatomy and ecological characteristics.

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