A5062225876- Marine Biology and Ecology Research
- Marine Bivalve and Aquaculture Studies
- Genetic diversity and population structure
- Fish Biology and Ecology Studies
- Aquatic Invertebrate Ecology and Behavior
- Fish Ecology and Management Studies
- Microbial Community Ecology and Physiology
- Identification and Quantification in Food
- Marine Ecology and Invasive Species
- Coral and Marine Ecosystems Studies
- Ocean Acidification Effects and Responses
- Genomics and Phylogenetic Studies
- Isotope Analysis in Ecology
- Environmental DNA in Biodiversity Studies
- Asian Culture and Media Studies
- Marine Invertebrate Physiology and Ecology
- Plant and animal studies
- Mollusks and Parasites Studies
- Evolution and Genetic Dynamics
- Aquaculture Nutrition and Growth
- Ichthyology and Marine Biology
- Educational Systems and Policies
- Crustacean biology and ecology
- Marine and coastal plant biology
- Physiological and biochemical adaptations
Ewha Womans University
2015-2024
Ewha Womans University Medical Center
2022-2023
Sogang University
2021
Rutgers, The State University of New Jersey
2002-2006
Monterey Bay Aquarium Research Institute
2001-2004
Seoul National University
1996-2002
Within the endemic invertebrate faunas of hydrothermal vents, five biogeographic provinces are recognized. Invertebrates at two Indian Ocean vent fields (Kairei and Edmond) belong to a sixth province, despite ecological settings invertebrate-bacterial symbioses similar those both western Pacific Atlantic vents. Most organisms found these have evolutionary affinities with faunas, but shrimp that ecologically dominates vents closely resembles its Mid-Atlantic counterpart. These findings...
Species inhabiting deep-sea hydrothermal vents are strongly influenced by the geological setting, as it provides chemical-rich fluids supporting food web, creates patchwork of seafloor habitat, and generates catastrophic disturbances that can eradicate entire communities. The patches vent habitat host a network communities (a metacommunity) connected dispersal planktonic larvae. dynamics metacommunity not only birth rates, death rates interactions populations at local site, but also regional...
ABSTRACT Deep-sea Bathymodiolus mussels, depending on species and location, have the capacity to host sulfur-oxidizing (thiotrophic) methanotrophic eubacteria in gill bacteriocytes, although little is known about mussels' mode of symbiont acquisition. Previous studies relationships been based collections nonoverlapping across wide-ranging geographic settings, creating an apparent model for vertical transmission. We present genetic cytological evidence environmental acquisition thiotrophic...
Abstract Deep‐sea hydrothermal vent species are widely dispersed among habitat islands found along the global mid‐ocean ridge system. We examine factors that affect population structure, gene flow and isolation in vent‐endemic mussels of genus Bathymodiolus from eastern Pacific Ocean. Mussels were sampled localities including Galapagos Rift (GAR, 0°48′ N; 86°10′ W) East Rise (EPR, 13° N to 32° S latitude) across a maximum distance 4900 km. The range crossed series topographical features...
The cichlid fishes of Lake Malawi are famously diverse. However, phylogenetic and population genetic studies their history have been difficult because the great amount variation that is shared between species. We apply a recently developed method for fitting “isolation with migration” divergence model to data set specially designed compound loci develop portraits species divergence. Outgroup sequences from Tanganyika permit parameter estimates in units years effective sizes. Estimated...
Cobitis nalbanti, new species, is described from the South Korean Han and Geum Rivers, draining to Yellow Sea. It differs its congeners by having a wide, ovoid lamina circularis; rounded scales with large, slightly-displaced focal zone; relatively long, protruded snout; suborbital spine not reaching center of eye; mandibular barbel anterior edge usually 12–14 dark brown blotches in fourth Gambetta’s single elongated black spot on upper part caudal-fin base; only streak head running tip snout...
The Equator and Easter Microplate regions of the eastern Pacific Ocean exhibit geomorphological hydrological features that create barriers to dispersal for a number animals associated with deep-sea hydrothermal vent habitats. This study examined effects these boundaries on geographical subdivision polychaete Alvinella pompejana. DNA sequences from one mitochondrial eleven nuclear genes were in samples collected ten localities comprise species' known range 23°N latitude East Rise 38°S...
Abstract When populations or species have recently separated they often share genetic variation. However, it can be difficult to determine whether shared polymorphisms are the result of gene flow, persistence variation in both since time common ancestry, these factors. We developed an empirical protocol for using loci that include unique nuclear DNA sequence haplotypes together with linked microsatellites short tandem repeats (STRs). These ‘HapSTRs’ offer potentially high resolution...
Background In a species with large distribution relative to its dispersal capacity, geographic variation in traits may be explained by gene flow, selection, or the combined effects of both. Studies genetic diversity using neutral molecular markers show that patterns isolation distance (IBD) barrier effect evident for at level amphibian species. However, selective factors such as habitat, predator, interspecific interactions critical sexual traits. We studied advertisement calls tree frog...
Abstract The cellular and molecular mechanisms governing sexual reproduction are conserved across eukaryotes. Nevertheless, hybridization can disrupt these mechanisms, leading to asexual reproduction, often accompanied by polyploidy. In this study, we investigate how ploidy level ratio of parental genomes in hybrids affect their reproductive mode. We analyze the gametogenesis species diploid triploid from freshwater fish family Cobitidae, using newly developed cytogenetic markers. find that...
Molecular phylogenetic analyses revealed no evidence for cospeciation between deep-sea bathymodiolin mussels (Bivalvia: Mytilidae) and their associated thiotrophic (sulfur-oxidizing) bacterial endosymbionts. Host symbiont tree topologies were not congruent inferred time-depths of the gene trees inconsistent, as expected if mussel hosts are infected by local strains symbiont. Evolutionary divergence among thiotrophs is correlated with geographical distances sample locations. Apparently these...
Abstract This article documents the addition of 411 microsatellite marker loci and 15 pairs Single Nucleotide Polymorphism (SNP) sequencing primers to Molecular Ecology Resources Database. Loci were developed for following species: Acanthopagrus schlegeli, Anopheles lesteri, Aspergillus clavatus, flavus, fumigatus, oryzae, terreus, Branchiostoma japonicum, belcheri, Colias behrii, Coryphopterus personatus, Cynogolssus semilaevis, Cynoglossus Dendrobium officinale, Dysoxylum malabaricum,...
The inhabitants of deep-sea hydrothermal vents occupy ephemeral island-like habitats distributed sporadically along tectonic spreading-centers, back-arc basins, and volcanically active seamounts. majority vent taxa undergo a pelagic larval phase, thus varying degrees geographical subdivision, ranging from no impedance dispersal to complete isolation, often exist among that span common geomorphological boundaries. Two lineages Bathymodiolus mussels segregate on either side the Easter...
The densities of chemoautotrophic and methanotrophic symbiont morphotypes were determined in life- history stages (post-larvae, juveniles, adults) two species mussels (Bathymodiolus azoricus B. heckerae) from deep-sea chemosynthetic environments (the Lucky Strike hydrothermal vent the Blake Ridge cold seep) Atlantic Ocean. Both observed all specimens same relative proportions, regardless life-history stage. abundance morphotypes, by transmission electron microscopy, was different species:...
Abstract This article documents the addition of 238 microsatellite marker loci to Molecular Ecology Resources Database. Loci were developed for following species: Alytes dickhilleni , Arapaima gigas Austropotamobius italicus Blumeria graminis f. sp. tritici Cobitis lutheri Dendroctonus ponderosae Glossina morsitans Haplophilus subterraneus Kirengeshoma palmata Lysimachia japonica Macrolophus pygmaeus Microtus cabrerae Mytilus galloprovinciali s, Pallisentis ( Neosentis ) celatus Pulmonaria...
Germline mutations in the BRCA1 and BRCA2 genes are responsible for predisposition development of familial breast and/or ovarian cancer. Most associated with cancer result truncated proteins. To investigate presence germline Korean families, we screened a total 27 cases from 21 families including two or more affected first- second-degree relatives PTT, PCR-SSCP, DHPLC analysis, followed by sequencing were used screening process. In nine found that comprised four frameshift five nonsense...
Abstract This article documents the addition of 299 microsatellite marker loci and nine pairs single‐nucleotide polymorphism (SNP) EPIC primers to Molecular Ecology Resources (MER) Database. Loci were developed for following species: Alosa pseudoharengus, aestivalis, Aphis spiraecola, Argopecten purpuratus, Coreoleuciscus splendidus, Garra gotyla, Hippodamia convergens, Linnaea borealis, Menippe mercenaria, adina, Parus major, Pinus densiflora, Portunus trituberculatus, Procontarinia...
Genomic introgression through interspecific hybridization has been observed in some species of the freshwater fish family Cobitidae. Within this family, a Cobitis hankugensis-Iksookimia longicorpa diploid-triploid hybrid complex on Korean peninsula is unique displaying hybridogenesis, unisexual reproduction mode that allows hybrids to mediate transfer mitochondrial DNA (but not nuclear DNA) between two parent species. However, populations parental wild have never examined for potential...
Abstract To address the impacts of past climate changes, particularly since last glacial period, on history distribution and demography marine species, we investigated evolutionary demographic responses intertidal batillariid gastropod, Batillaria attramentaria , to these using snail as a model species in northwest Pacific. We applied phylogeographic divergence population genetic approaches mitochondrial COI sequences from B. . cover much its distributional range, 197 individuals collected...
Abstract A hybrid zone involving the deep‐sea mussels, Bathymodiolus azoricus and B. puteoserpentis , was recently discovered at Broken Spur hydrothermal vent field (29°10′ N, 43°10′ W) along an intermediate segment of Mid‐Atlantic Ridge axis. Examination nuclear (allozymes) cytoplasmic (mitochondrial DNA) gene markers in a new sample from revealed significant cytonuclear disequilibrium caused by excess parental types (coupling phase) deficiency recombinants (repulsion phase). An assignment...
The cichlid fishes of Lake Malawi are famously diverse. However, evolutionary studies have been difficult because their recent and uncertain phylogenetic history. Portions 12 nuclear loci were sequenced in nine rock-dwelling species (mbuna) three representatives pelagic nonmbuna species. In contrast to the pattern variation at mitochondrial genes, which do provide resolution level mbuna versus nonmbuna, among some genera, virtually devoid signal. Only a small minority variable positions...
River connections via artificial canals will bring about secondary contacts between previously isolated fish species. Here, we present a genetic consequence of such contact Cobitis species, C. lutheri in the Dongjin River, and tetralineata Seomjin Korea. The construction water 80 years ago has unidirectionally introduced into native habitat lutheri, then these species have hybridized main stream section River. According to divergence population analyses DNA sequence data, two diverged 3.3...