A5027041382- Marine Bivalve and Aquaculture Studies
- Aquaculture Nutrition and Growth
- Environmental Toxicology and Ecotoxicology
- Marine Biology and Environmental Chemistry
- Marine Biology and Ecology Research
- Aquatic Invertebrate Ecology and Behavior
- Reproductive biology and impacts on aquatic species
- Isotope Analysis in Ecology
- Mollusks and Parasites Studies
- Marine and coastal plant biology
- Marine and fisheries research
- Marine Ecology and Invasive Species
- Cephalopods and Marine Biology
- Physiological and biochemical adaptations
- Fish Ecology and Management Studies
- Geology and Paleoclimatology Research
- Aquaculture disease management and microbiota
- Mercury impact and mitigation studies
- Amyloidosis: Diagnosis, Treatment, Outcomes
- Neuroendocrine regulation and behavior
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Parasite Biology and Host Interactions
- Insect and Arachnid Ecology and Behavior
- Meat and Animal Product Quality
- Calcium Carbonate Crystallization and Inhibition
Chonnam National University
2016-2025
National Institute of Fisheries Science
2014
Kangwon National University
2014
Pukyong National University
2014
Zinc (Zn) is an essential micronutrient in organisms and abundant element the Earth's crust. Trace amounts of Zn released from natural sources can enter aquatic ecosystems through weathering erosion. accumulates organisms, when its intracellular concentration exceeds a certain level, it induce oxidative stress trigger stress-mediated heat shock protein (HSP) modulation. HSP70 most evolutionarily conserved among HSP families. Despite extensive research on genes bivalves, gene family...
The present study describes the differentiation process of male germ cells in Octopus vulgaris , morphology sperm testis and spermatophore, released after spermatophoric reaction. During spermatogenesis, cell gradually elongates from a round shape, with cytoplasm shifting toward head acrosome forming. Additionally, spermatid stage, flagellum develops within posterior nuclear channel extends outside cytoplasm. is composed tail. approximately 17.9 μm long consists highly electron-dense nucleus...
The sex ratio (F:M) in the same population of oyster, Crassostrea gigas at commencement study (2007) was 1:1.0, but changed to 1:2.8 by end (2008). reversal rate two-year-old oysters 40.2%. Specifically, female male 66.1%, which is higher than 21.1%. pattern C. appears go from male⇒female⇒male, and as such determined be rhythmical hermaphroditism.
Genetic information of reproduction and growth is essential for sustainable molluscan fisheries aquaculture management. However, there limited knowledge regarding the reproductive activity commercially important Pacific abalone Haliotis discus hannai. We performed de novo transcriptome sequencing ganglia in sexually immature mature female to better understand sexual maturation process underlying molecular mechanisms. Of ~305 million high-quality clean reads, 76,684 transcripts were...
The rate of sex reversal in the Manila clam Ruditapes philippinarum was 19.0%. male to female ratio 21.1%, which higher than 12.9%. Based on our results, R. is confirmed be a sequential hermaphrodite.
Juvenile Anoplopoma fimbria (mean length 16.8 ± 2.2 cm, and mean weight 72.8 5.4 g) were exposed for 2 months with different levels of ammonia (0, 0.25, 0.50, 0.75, 1.00, 1.25 mg/L). Growth performances such as daily gain, condition factor, hepatosomatic index significantly decreased by exposure. Hematological parameters red blood cell (RBC) count, hematocrit, hemoglobin also decreased. In plasma inorganic components, calcium magnesium organic there was no alteration in cholesterol total...
The invertebrate LFRFamide (LFRFa) and short neuropeptide F (sNPF), consisting of 6 to 10 amino acids, are orthologs for bilaterian NPF/Y, which consist 36 40 acids. Recently, a molluscan G protein-coupled receptor (GPCR) NPF was characterized in Pacific abalone ( Haliotis discus hannai ). To address the functional evolutionary route LFRFa signaling system, this study, we identified cDNAs encoding precursors sNPF (Hdh-sNPFR) abalone. Four mature peptides with or 7 acids were predicted:...
This study was performed to obtain information on the sex ratio, spawning period, and size at sexual maturity for fishery management of largehead hairtail Trichiurus japonicus in Korean waters. The overall ratio (female, F; male, M) 1:0.46 (n = 1274 females:589 males, 68.4% female) as fish increased length, proportion females increased. oocyte development pattern group-synchronous development, which groups different stages can be identified within same ovary. average gonadosomatic index...
Abstract This study aims to find out the effect of heavy metals, as is case EDCs (endocrine disrupting chemicals), on reproductive endocrine disruption aquatic animals. In present experiment zinc, which a metal well known for its androgenous activity, was used. The experimental period 24 weeks, starting in November during inactive stage clam's cycle. groups were composed one control condition and three zinc exposure conditions (0.64, 1.07, 1.79 mg/L). sex ratio (F:M) 1:1.06 group 1:1.70 all...
Abstract Juvenile Sablefish Anoplopoma fimbria were used to assess the effects of water temperature (8, 10, 12, 14, 16, 18, and 20°C) on hematological parameters heat shock proteins 70 90 for 4 months. Hematological parameters, including red blood cell count, hematocrit, hemoglobin, significantly decreased at 18°C. The inorganic plasma components calcium magnesium not altered by temperature. organic glucose cholesterol notably elevated 18°C, whereas total protein was reduced. enzymatic...
Manganese (Mn2+) is a trace element that essential for normal physiology, and predominantly obtained from food. Several lines of evidence, however, demonstrated overexposure to MnCl2 exerts serious neurotoxicity, immunotoxicity developmental toxicity, particularly in male. The present study aimed evaluate the effect 0, 1.0, 3.3, 10 mg/kg/day doses on reproductive organs immature female rats. Rats (PND 22; S.D. strain) were exposed (MnCl2 ∙ 4H2O) dissolved drinking water 2 weeks. animals...