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Articles 31 - 60 of 142
Full-Text Articles in Aquaculture and Fisheries
Bioeconomic Evaluation Of The Tiger Shrimp (Penaeus Monodon) Industry In Tra Vinh Province, Vietnam, Hieu Truong Khac, Hong Hue Tran Thi Phuong, Cheng Ting Huang, Sha Miao
Bioeconomic Evaluation Of The Tiger Shrimp (Penaeus Monodon) Industry In Tra Vinh Province, Vietnam, Hieu Truong Khac, Hong Hue Tran Thi Phuong, Cheng Ting Huang, Sha Miao
Journal of Marine Science and Technology–Taiwan
Analysis of costs and returns for the tiger shrimp farming industry in Tra Vinh Province, Vietnam was carried out by considering different production scales. The production scale influenced not only the cost but also the profitability. Through the results of multivariate statistical analyses, this study showed that the production cost, benefit and earning capacity varied from extensive to semi-intensive and finally to intensive systems. By means of Cobb-Douglas production function analysis, it is revealed that net revenue from increasing the production scale would increase if the input intensities of the fixed, seed and feed costs rose. More investment should be …
Diel Change In Acoustic Characteristics And Zooplankton Composition Of The Sound Scattering Layer In I-Lan Bay In Northeastern Taiwan, Szu-Chia Kao, Ming-An Lee, Kohji Iida
Diel Change In Acoustic Characteristics And Zooplankton Composition Of The Sound Scattering Layer In I-Lan Bay In Northeastern Taiwan, Szu-Chia Kao, Ming-An Lee, Kohji Iida
Journal of Marine Science and Technology–Taiwan
A 36-h acoustic observation of the I-Lan Bay was con-ducted on board the Ocean Research II from June 2 to 4, 2013. The acoustic volume backscattering strength (SV) was meas-ured using a scientific echo sounder (EK500, 38 and 120 kHz) to determine the acoustic characteristics of the deep scattering layers (DSLs) before and after the vertical movement. Two DSLs were found during the daytime at a depth of 80-130 m (upper DSL, UD) and 130-230 m (lower DSL, LD), with mean SVs of approximately 78 dB (UD) and 77 dB (LD) at 38 kHz and 65 dB (UD) and −60 …
Antioxidant Capacity And Metabolic Response Of Red Striped Snapper Lutjanus Erythropterus Fed Diet With Astaxanthin And/Or Oxidized Oil, Isagani P. Angeles, Jr., Yew-Hu Chien
Antioxidant Capacity And Metabolic Response Of Red Striped Snapper Lutjanus Erythropterus Fed Diet With Astaxanthin And/Or Oxidized Oil, Isagani P. Angeles, Jr., Yew-Hu Chien
Journal of Marine Science and Technology–Taiwan
This study evaluated the effects of astaxanthin (AX) on antioxidant capacity, metabolic response, and liver AX concentration of red striped snapper (Lutjanus erythropterus) (20.05 1.65 g) fed with a diet with or without high dosage of oxidized oil (OX). The commercial diet served as control (C). Fish were fed with a diet containing 240 mg/kg AX, 100 ml/kg OX, or combination of 240 mg/kg AX and 100 ml/kg OX (AX OX) for a day. Antioxidant capacity (superoxide dismutase, glutathione peroxidase, and glutathione reductase) and metabolic response (glucose, triglycerides, and lactate) were monitored at 0, 6, 12, 24, 48 …
Additions To The Taiwan Eel Fauna With Five Newly Recorded Species Of Moray Eels (Anguilliformes: Muraenidae), And Redescription Of A Rare Species Gymnothorax Sagmacephalus, Kar-Hoe Loh, Kwang-Tsao Shao, Ving-Ching Chong, Hong-Ming Chen
Additions To The Taiwan Eel Fauna With Five Newly Recorded Species Of Moray Eels (Anguilliformes: Muraenidae), And Redescription Of A Rare Species Gymnothorax Sagmacephalus, Kar-Hoe Loh, Kwang-Tsao Shao, Ving-Ching Chong, Hong-Ming Chen
Journal of Marine Science and Technology–Taiwan
Five rare moray species: Anarchias cantonensis (Schultz), Gymnothorax dorsalis Seale, G. intesi (Fourmanoir & Rivaton), G. phasmatodes (Smith) and G. sagmacephalus (Böhlke) belonging to the subfamilies Uropterygiinae and Muraeninae are reported for the first time in the surrounding waters off Taiwan. Diagnoses of these five species, including fresh coloration and dentition, are provided. A re-description of G. sagmacephalus is provided since its original description, based on the single holotype, was incomplete specifically due to its damaged tail. With the added 12 specimens, we provided the statistics of the morphological measurements and vertebral formulae, and expanded its geographical distribution from Japan …
Bioeconomic Analysis Of Commercial Pond Culturing Of The Striped Catfish Pangasianodon Hypophthalmus In The Mekong Delta, Vietnam, Hieu Truong Khac, Sha Miao, Cheng Ting Huang, Hong Hue Tran Thi Phuong
Bioeconomic Analysis Of Commercial Pond Culturing Of The Striped Catfish Pangasianodon Hypophthalmus In The Mekong Delta, Vietnam, Hieu Truong Khac, Sha Miao, Cheng Ting Huang, Hong Hue Tran Thi Phuong
Journal of Marine Science and Technology–Taiwan
An analysis of costs and returns for striped catfish grow-out pond culturing in the Mekong Delta, Vietnam taking into consideration the factor of geographical location, was conducted. The geographical location not only had an influence on the cost but also the profitability of the enterprise. Multivariate statistical analysis showed a decline in the operating costs and benefits, depending on the location, being highest in middle stream ponds, less in upstream ponds and finally lowest in downstream ponds. However, the earning power of downstream ponds was highest, in terms of profitability associated with fingerlings, feed and energy. Cobb Douglas production function …
Effects Of Dietary Lipid Levels On Growth, Survival And Body Fatty Acid Composition Of Grouper Larvae, Epinephelus Coioides And Epinephelus Lanceolatus, Jen-Hong Chu, Shyn-Shin Sheen
Effects Of Dietary Lipid Levels On Growth, Survival And Body Fatty Acid Composition Of Grouper Larvae, Epinephelus Coioides And Epinephelus Lanceolatus, Jen-Hong Chu, Shyn-Shin Sheen
Journal of Marine Science and Technology–Taiwan
Two feeding experiments were conducted to study the effects of dietary lipid levels on the growth, muscle fatty acid profile and survival of 0.14 g Epinephelus coioides and 0.09 g Epinephelus lanceolatus larvae. Five semi-purified diets included 0%, 5%, 10%, 15% and 20% lipid were formulated. Each diet was randomly assigned to three replicate groups of grouper larvae. The final weight, weight gain percentage and survival of two grouper species fed diet without supplemented lipid were significantly lower than those of larvae fed treatment diets. E. coioides had lower weight gain percentage than E. lanceolatus. The weight gain percentages of …
Extraction And Characterization Of Fucoidan From Six Brown Macroalgae, Chun-Ying Wang, Yean-Chang Chen
Extraction And Characterization Of Fucoidan From Six Brown Macroalgae, Chun-Ying Wang, Yean-Chang Chen
Journal of Marine Science and Technology–Taiwan
The content and composition of fucoidan in six brown macroalgae were investigated. The influence of different washing steps and two types of extraction methods on the yield and composition of fucoidan were assessed. The composition of the extract was determined by using a colorimetric method to measure the total sugar, sulfate, and protein contents of the fucoidan. The monosaccharide composition was assessed using high-performance liquid chromatography. The structures of the algal polysaccharide were studied using Fourier transform infrared-attenuated total reflectance spectroscopy. The fucoidan content extracted using method I was 13.13% (of dry weight), 24.00%, and 22.67% from Sargassum glaucescens, Sargassum …
Hypoxia-Inducible Factor 2-Alpha Participates In The Regulation Of Intersegmental Vessels Angiogenesis And Neuromast Deposition, Chi-Fu Chou, Han-Jia Lin, Chih-Yu Tsai, Tzung-Yi Lin, Hsin-Yu Chung, Chia-Yin Chiang, Chung-Hao Li, Tun-Wen Pai, Chin-Hwa Hu, Wen-Shyong Tzou
Hypoxia-Inducible Factor 2-Alpha Participates In The Regulation Of Intersegmental Vessels Angiogenesis And Neuromast Deposition, Chi-Fu Chou, Han-Jia Lin, Chih-Yu Tsai, Tzung-Yi Lin, Hsin-Yu Chung, Chia-Yin Chiang, Chung-Hao Li, Tun-Wen Pai, Chin-Hwa Hu, Wen-Shyong Tzou
Journal of Marine Science and Technology–Taiwan
Subtle morphogenesis begins during trunk development after the segmentation period in zebrafish. Sprouting angiogenesis forms the trunk vascular system after the extension of the dorsal aorta and cardinal veins. The posterior lateral line primordium migrates from head to tail, forming the sensory organs on the skin. It is still unclear whether this morphogenesis requires several master regulators to control the ongoing process. Hypoxia-inducible factor 2-alpha (Hif2-alpha) plays an essential role in the maturation of both central neural system and digestive system during embryogenesis. We hypothesized that Hif2-alpha also regulates trunk development. Through loss-of-function experiments, we found that Hif2- alpha, but …
Length-Based Estimates Of Growth And Natural Mortality For Blue Marlin (Makaira Nigricans) In The Northwest Pacific Ocean, Nan-Jay Su, Chi-Lu Sun, Chuan-Yuan Tai, Su-Zan Yeh
Length-Based Estimates Of Growth And Natural Mortality For Blue Marlin (Makaira Nigricans) In The Northwest Pacific Ocean, Nan-Jay Su, Chi-Lu Sun, Chuan-Yuan Tai, Su-Zan Yeh
Journal of Marine Science and Technology–Taiwan
Blue marlin is an important resource for commercial and recreational fisheries. However, several life history parameters needed for stock assessments of this species are poorly determined. Sex-specific catch-at-size data (eye fork length, EFL) for blue marlin were collected from the Taiwanese offshore longline fishery in the northwest Pacific Ocean, and analyzed using the MULTIFAN, a length-frequency analysis, to derive growth parameters. The von Bertalanffy growth parameters of blue marlin were estimated to be different between sexes. The best model for the females included 11 age-classes in the lengthfrequency data sets (asymptotic length L = 312.5 cm EFL, growth coefficient k …
Maturity Characteristics Of Pacific Saury During Fishing Season In The Northwest Pacific, Wen-Bin Huang, Yu-Chun Huang
Maturity Characteristics Of Pacific Saury During Fishing Season In The Northwest Pacific, Wen-Bin Huang, Yu-Chun Huang
Journal of Marine Science and Technology–Taiwan
Pacific saury is a commercially important fish in the Northwest Pacific. This study examined the maturity characteristics, gonadosomatic index (GSI), condition factor (CF), and ovarian developmental stage of the saury stock in three months of the fishing season (from May to December) in the Northwest Pacific. The maturity characteristics of saury varied among these three months (May, July, and October) in 2009. In May, large GSI and CF values with advanced ovarian developmental stages but small knob lengths (KnL) and body weights (BW) were found. Also in this month, the large-sized saury (> 29 cm) possessed large GSI values and …
Cpue Standardization And Catch Estimate Of Blue Shark By Taiwanese Large-Scale Tuna Longline Fishery In The North Pacific Ocean, Wen-Pei Tsai, Chi-Lu Sun, Kwang-Ming Liu, Shyh-Bin Wang, Nancy C. H. Lo
Cpue Standardization And Catch Estimate Of Blue Shark By Taiwanese Large-Scale Tuna Longline Fishery In The North Pacific Ocean, Wen-Pei Tsai, Chi-Lu Sun, Kwang-Ming Liu, Shyh-Bin Wang, Nancy C. H. Lo
Journal of Marine Science and Technology–Taiwan
The blue shark, Prionace glauca, is a pelagic species with a circum-global distribution in tropical to temperate waters. It is the top by-catch shark species for the Taiwanese large-scale tuna longline (LTLL) fishery. However, its population status in the North Pacific Ocean is still little known. In the present study, the blue shark catch and effort data from observers' records of Taiwanese LTLL fishing vessels operating in the North Pacific Ocean from 2004 to 2012 were analyzed. Due to the large percentage of zero blue shark catch, the catch per unit effort (CPUE) of blue shark, as the number of …
Response Surface Optimization Of Microwave-Assisted Sulfated Polysaccharide Extraction From Porphyra Dentate, Yeu-Pyng Lin, Shao-Chi Wu, Jean-Yu Hwang
Response Surface Optimization Of Microwave-Assisted Sulfated Polysaccharide Extraction From Porphyra Dentate, Yeu-Pyng Lin, Shao-Chi Wu, Jean-Yu Hwang
Journal of Marine Science and Technology–Taiwan
An experiment was performed by adjusting the pH value (4-10) of a 10%-to-90% ethanol solution (v/v) and using it as an extraction solvent and, subsequently, using microwaveassisted extraction (MAE) to extract Porphyra denate solutions. The sulfated polysaccharides (µg/mL) of these extraction solutions were evaluated. The optimal treatments of P. denate extracts obtained using MAE were studied using response surface methodology. The study was performed using a three-level, four-factor design and aimed to determine the optimal combinations of the ethanol concentration (10%-90%, v/v, X1), pH value of an ethanol solution (4-10, X2), microwave power level (200-400 W, X3), and heating time …
The Ipocamp Pressure Incubator For Deep-Sea Fauna, Bruce Shillito, Françoise Gaill, Juliette Ravaux
The Ipocamp Pressure Incubator For Deep-Sea Fauna, Bruce Shillito, Françoise Gaill, Juliette Ravaux
Journal of Marine Science and Technology–Taiwan
Animal Biology studies have always benefited from the achievement of experiments on live animals, which obviously provide data on dynamic aspects of physiology. When it comes to deep-sea fauna, in vivo experiments are impaired, and in some cases impossible, due to the severe and often lethal stress experienced by animals throughout the sampling process. However, freshly collected deep fauna may be maintained alive and in good condition, by using specific aquaria which restore environmental conditions prevailing at depth in situ. Here we describe the pressure device named “Incubateur Pressurisé pour l’Observation et la Culture d’Animaux Marins Profonds”, or IPOCAMP, and …
Marine Invertebrate Larval Distribution At The Hydrothermal Vent Site Of Gueishandao, Hans-Uwe Dahms, Li-Chun Tseng, Jiang-Shiou Hwang
Marine Invertebrate Larval Distribution At The Hydrothermal Vent Site Of Gueishandao, Hans-Uwe Dahms, Li-Chun Tseng, Jiang-Shiou Hwang
Journal of Marine Science and Technology–Taiwan
Scientists remain uncertain about numerous aspects of hydrothermal vent (HV) ecology, including the reproductive biology of their biota, as well as their recruitment and dispersal during larval stages (meroplankton) in the plankton above the HV sites. We studied the meroplankton from a shallow HV site off the northeastern coast of Taiwan, in the northwest Pacific Ocean. Our findings potentially explain how fauna endemic to HVs persist at specific HV sites. With the exception of some damaged Cnidaria and Ctenophora, the plankton net catches were in good condition and sufficient for identification.
Sequence Diversity Of Ammonium Transporter Genes In Cultured And Natural Species Of Marine Phytoplankton, Lee-Kuo Kang, Jeng Chang
Sequence Diversity Of Ammonium Transporter Genes In Cultured And Natural Species Of Marine Phytoplankton, Lee-Kuo Kang, Jeng Chang
Journal of Marine Science and Technology–Taiwan
The sequence database of ammonium transporter (Amt1) genes in eukaryotic phytoplankton was expanded by obtaining new sequences from cultured strains and natural populations collected in the East China Sea (ECS). From unialgal cultures, 6 new Amt1 sequences belonging to the Bacillariophyceae, Dinophyceae, and Prasinophyceae were obtained. A phylogenetic analysis revealed that AMT1s of higher plants were most closely related to those in green algae. In addition, haptophyte and diatom AMT1s formed distinct monophyletic clades. Diatom AMT1s were further divided into 3 orthologous subclasses, and active gene duplications were observed in subclass III. As for mixed-species sequencing using ECS samples, 78 …
Shrimp Immune System -Special Focus On Penaeidin, Yen-Ling Song, Ching-Yu Li
Shrimp Immune System -Special Focus On Penaeidin, Yen-Ling Song, Ching-Yu Li
Journal of Marine Science and Technology–Taiwan
In this review paper, we summarize the immune system of penaeid shrimp. This review includes the clotting system comprising clot protein and clotting enzyme (transglutaminase II), as well as the prophenoloxidase (proPO) activation system including proPO-activating enzyme (PPAE), proPO and clip domain serine protease homolog (c-SPH). In addition, several shrimp cytokines or cytokine-like molecules found in tiger shrimp Penaeus monodon participating in the defense responses are also discussed. C-SPH could enhance hemocyte adhesion. Shrimp astakine promoted hemocyte proliferation in the hematopoietic tissues and could be down-regulated at the post-transcriptional level by the binding of intracellular molecules such as transglutaminase I …
Evolution Of Vacuolar Pyrophosphatases And Vacuolar H+-Atpases In Diatoms, Adrien Bussard, Pascal Jean Lopez
Evolution Of Vacuolar Pyrophosphatases And Vacuolar H+-Atpases In Diatoms, Adrien Bussard, Pascal Jean Lopez
Journal of Marine Science and Technology–Taiwan
To cope with changing environments and maintain optimal metabolic conditions, the control of the intracellular proton gradients has to be tightly regulated. Among the important proton pumps, vacuolar H+ -ATPases (V-ATPases) and H+ - translocating pyrophosphatases (H+ -PPases) were found to be involved in a number of physiological processes, and shown to be regulated at the expression level and to exhibit specific sub-cellular localizations. Studies of the role of these transporters are relatively scarce in algae and nearly absent in diatoms. Phylogenetic analyses disclose that diatoms, with both K+ -dependent and K+ -independent membrane integral pyrophosphatases, including proteins with high …
Polychaetes As Annelid Models To Study Ecoimmunology Of Marine Organisms, Virginie Cuvillier-Hot, Céline Boidin-Wichlacz, Aurélie Tasiemski
Polychaetes As Annelid Models To Study Ecoimmunology Of Marine Organisms, Virginie Cuvillier-Hot, Céline Boidin-Wichlacz, Aurélie Tasiemski
Journal of Marine Science and Technology–Taiwan
Annelids are among the first coelomates and are therefore of special phylogenetic interest. They constitute an important part of the biomass of the seashore, estuaries, fresh water and terrestrial soils. Moreover, they occupy a central position in the trophic networks, as a major food source for fishes, birds and terrestrial fauna. Among Annelids, the large majority of polychaetes is restricted to the marine domain. This report gives an overview of the immune strategies developed by polychaetes to fight pathogens. The potential and interest to use these worms as biomarkers to monitor the influence of environmental perturbation on the immunity of …
Neurogenesis In Cephalopods: "Eco-Evo-Devo" Approach In The Cuttlefish Sepia Officinalis (Mollusca-Cephalopoda), Sandra Navet, Sébastien Baratte, Yann Bassaglia, Aude Andouche, Auxane Buresi, Laure Bonnaud
Neurogenesis In Cephalopods: "Eco-Evo-Devo" Approach In The Cuttlefish Sepia Officinalis (Mollusca-Cephalopoda), Sandra Navet, Sébastien Baratte, Yann Bassaglia, Aude Andouche, Auxane Buresi, Laure Bonnaud
Journal of Marine Science and Technology–Taiwan
Cephalopods are new evolutionary and ecological models. By their phylogenetic position (Lophotrochozoa, Mollusca), they provide a missing master piece in the whole puzzle of neurodevelopment studies. Their derived and specific nervous system but also their convergence with vertebrates offer abundant materials to question the evolution and development of the nervous system of Metazoa (evo-devo studies). In addition, their various adaptions to different modes of life open new fields of investigation of developmental plasticity according to ecological context (eco-evo-devo approach). In this paper, we review the recent works on cephalopod nervous developmental investigations. We show how cephalopods, and especially Sepia officinalis, …
Traditional Vs New Approaches For Assessing Coral Health: A Global Overview And The Paradigm Of French Polynesia, Laetitia Hédouin, Véronique Berteaux-Lecellier
Traditional Vs New Approaches For Assessing Coral Health: A Global Overview And The Paradigm Of French Polynesia, Laetitia Hédouin, Véronique Berteaux-Lecellier
Journal of Marine Science and Technology–Taiwan
Today, there is increasing concern regarding the capacity of Scleractinian corals to sustain the growing number of insults associated with global and local changes (e.g. global warming, ocean acidification, pollution). If corals are to exist, there is an urgent need to use indicators of coral health that provide insight into early sub lethal shifts in corals before the irreversible effects of exposure manifest at the population and community levels. This paper will provide an overview of the most relevant and appropriate indicators of coral health currently used in traditional monitoring programs (traditional approach) or those that could be used in …
Assessing The Potential Bacterial Origin Of The Chemical Diversity In Calcareous Sponges, Elodie Quévrain, Mélanie Roué, Isabelle Domart-Coulon, Marie-Lise Bourguet-Kondracki
Assessing The Potential Bacterial Origin Of The Chemical Diversity In Calcareous Sponges, Elodie Quévrain, Mélanie Roué, Isabelle Domart-Coulon, Marie-Lise Bourguet-Kondracki
Journal of Marine Science and Technology–Taiwan
The chemodiversity and cultivable bacterial diversity of temperate calcareous sponges were investigated in a time series of collection of two sponges, Leuconia johnstoni (Baerida, Calcaronea) collected from the northeastern Atlantic Ocean and Clathrina clathrus (Clathrinida, Calcinea) collected from the northwestern Mediterranean Sea, using combined chemical and microbiological approaches. Bacteria were visualized in tissue sections of these sponges with Gram staining and in situ hybridization. The sponge crude extracts revealed annually persistent biological activities against reference human pathogen strains: L. johnstoni extracts displayed antimicrobial activity against a Gram positive Staphylococcus aureus strain; C. clathrus extracts displayed a broad spectrum of antimicrobial …
Diversity Of Bacterial Communities On Sunken Woods In The Mediterranean Sea, Sandrine Bessette, Sonja K. Fagervold, Chiara Romano, Daniel Martin, Nadine Le Bris, Pierre E Galand
Diversity Of Bacterial Communities On Sunken Woods In The Mediterranean Sea, Sandrine Bessette, Sonja K. Fagervold, Chiara Romano, Daniel Martin, Nadine Le Bris, Pierre E Galand
Journal of Marine Science and Technology–Taiwan
Sunken woods are very rich and diverse ecosystems supporting large macrofaunal diversity and representing a source of carbon and energy for any heterotrophic organism able to consume plant material, and those relying on specialized microbial taxa. However, relatively little is known about the microbial communities that degrade sunken woods and produce reduced compounds that serve as energy sources for chemosynthetic lifestyles. The purpose of this study was to explore the bacterial diversity developing on and within sunken woods in a NW Mediterranean submarine canyon and its adjacent slope by using 16S rRNA genes survey. We described communities from Pine wood …
Crustacean Hyperglycemic Hormone: Structural Variants, Physiological Function, And Cellular Mechanism Of Action, Chi-Ying Lee, Kuo-Wei Tsai, Wei-Shiun Tsai, Jia-Ying Jiang,, Yan-Jhou Chen
Crustacean Hyperglycemic Hormone: Structural Variants, Physiological Function, And Cellular Mechanism Of Action, Chi-Ying Lee, Kuo-Wei Tsai, Wei-Shiun Tsai, Jia-Ying Jiang,, Yan-Jhou Chen
Journal of Marine Science and Technology–Taiwan
Crustacean hyperglycemic hormone (CHH) is a peptide hormone originally identified in the X-organ/sinus gland (XO/ SG) complex of the eyestalks. It belongs to the CHH family which also includes molt-inhibiting hormone (MIH), vitellogenesis-inhibiting hormone (VIH), and mandibular organinhibiting hormone (MOIH), and ion transport peptide (ITP). Multiple molecular variants of CHH are generated by both post-transcriptional and post-translational mechanisms. In addition to the XO/SG complex, CHH gene is widely expressed in many extra-eyestalk tissues. Functionally, available data indicate that CHH is involved with the regulation of carbohydrate metabolism and stress-induced hyperglycemia. Several other physiological processes, including molting, ion and water balance, …
Hydrothermal Vent Effluents Affect Life Stages Of The Copepod Tisbe Sp, Hans-Uwe Dahms, Li-Chun Tseng, Derek Moo-Chul Shim, Jiang-Shiou Hwang
Hydrothermal Vent Effluents Affect Life Stages Of The Copepod Tisbe Sp, Hans-Uwe Dahms, Li-Chun Tseng, Derek Moo-Chul Shim, Jiang-Shiou Hwang
Journal of Marine Science and Technology–Taiwan
We examined the environmental effects of various concentrations of hydrothermal vent (HV) effluents on growth, reproduction, and survivorship of the Tisbe sp. harpacticoid copepod that were retrieved from localities near the vent. Developmental stages (nauplii and copepodids) were exposed to various concentrations of HV effluents in a static renewal culture system. In the survivorship experiments, we tested 3 distinct developmental phases in HV effluent dilutions from 50% to 1%. The HV effluents considerably reduced the survivorship of the naupliar stages at concentrations of >1% (P < 0.05); all nauplii died at concentrations of 25% and 50%. The copepodids were considerably affected at concentrations of >1% in Tisbe sp. (P < 0.05), and no copepodid survived at 50% (P < 0.01). The adult females died at a 50% concentration in Tisbe sp. The developmental duration was not considerably affected in the naupliar or copepodid phases; however, it exhibited a trend of developmental delay. The naupliar development of Tisbe sp. was substantially delayed at a concentration of 10% (P < 0.01), whereas copepodids and adults only exhibited a trend of delayed development with increasing HV concentration. The endpoint mortality exhibited a greater sensitivity to chemical exposure than the endpoint development time. The early developmental stages of Tisbe sp. in both traits were more sensitive to HV effluents than advanced stages. Mortality was a useful toxicological endpoint compared that of developmental duration. We demonstrated that Tisbe sp. may be used in the monitoring of acute and life cycle effects of natural marine pollution caused by HV effluents.
Using Hydroxyapatite From Fish Scales To Prepare Chitosan/Gelatin/Hydroxyapatite Membrane: Exploring Potential For Bone Tissue Engineering, Yi-Cheng Huang, Hao-Wen Chu
Using Hydroxyapatite From Fish Scales To Prepare Chitosan/Gelatin/Hydroxyapatite Membrane: Exploring Potential For Bone Tissue Engineering, Yi-Cheng Huang, Hao-Wen Chu
Journal of Marine Science and Technology–Taiwan
Concerns have recently been raised about the treatment and use of hydroxyapatite, an important component of fish scale. The goal of this investigation is to evaluate the feasibility of using hydroxyapatite extracted from fish scale (FHAP) for bone tissue engineering. FHAP or sintered FHAP (sFHAP) was added to chitosan/gelatin (CS/GEL) mixture to prepare membrane. The effect of FHAP and sFHAP on the physical and chemical properties of the membrane and their affinities towards MG63 cells were studied. Accordingly, the prepared CS/GEL/FHAP membrane was characterized by FTIR (ATRFTIR) and SEM. Following sintering at 800°C for 4 h, the CS/GEL/sFHAP membrane had …
Ba/Ca Ratios In Otoliths Of Southern Bluefin Tuna (Thunnus Maccoyii) As A Biological Tracer Of Upwelling In The Great Australian Bight, Yu-Ting Lin, Chia-Hui Wang, Chen-Feng You, Wann-Nian Tzeng
Ba/Ca Ratios In Otoliths Of Southern Bluefin Tuna (Thunnus Maccoyii) As A Biological Tracer Of Upwelling In The Great Australian Bight, Yu-Ting Lin, Chia-Hui Wang, Chen-Feng You, Wann-Nian Tzeng
Journal of Marine Science and Technology–Taiwan
The southern bluefin tuna (Thunnus maccoyii) is a longlived, large, and highly migratory marine fish in the Indian Ocean. They can live up to 40 years and migrate to the Great Australian Bight in the summer when 1-4 years old. The Great Australian Bight is characterized as the most productive coastal upwelling zone in southern Australia and is the largest area of cool-water carbonate sedimentation in the world. The barium (Ba) level is poor in the open ocean but rich in the upwelling area. This study used otolith Ba/Ca ratios as a natural tag to confirm that southern bluefin tuna …
Mortality In The Ocean - With Lessons From Hydrothermal Vents Off Kueishan Tao, Ne-Taiwan, Hans-Uwe Dahms, Jiang-Shiou Hwang
Mortality In The Ocean - With Lessons From Hydrothermal Vents Off Kueishan Tao, Ne-Taiwan, Hans-Uwe Dahms, Jiang-Shiou Hwang
Journal of Marine Science and Technology–Taiwan
There is evidence of plankton mortality and extinction at various temporal and spatial scales induced by man-made pollution, or by natural causes (ageing, competition, predation, diseases, natural pollution). If mortalities take place at large scale they might become of environmental concern and may impact other biotic compartments including fisheries substantially. Such mortalities are a consistent phenomenon at time scales from geological mass extinctions to regularly occurring HABs, that appear to be increasing on a global basis. Several mass mortalities might have escaped our notice for their patchy and erratic occurrences. This also holds for mortalities caused by hydrothermal vents (HVs) …
A New Genus Of Hemigobius Generic Group Goby Based On Morphological And Molecular Evidence, With Description Of A New Species, Shih-Pin Huang, Jaafar Zeehan, I-Shiung Chen
A New Genus Of Hemigobius Generic Group Goby Based On Morphological And Molecular Evidence, With Description Of A New Species, Shih-Pin Huang, Jaafar Zeehan, I-Shiung Chen
Journal of Marine Science and Technology–Taiwan
Wuhanlinigobius, a new genus of Hemigobius generic group would been established and assigned from Mugilogobius polylepis Wu and Ni, 1985. Mugilogobius polylepis has been regarded as belong to genus Eugnathogobius based on lacking head pores and representing longitudinal sensory papillae in previous taxonomic study. However, we compared the osteological features of Mugilogobius polylepis Wu and Ni, 1985 and Eugnathogobius microps Smith, 1931 as well as the molecular phylogenetic analysis based on the mtDNA ND5, Cyt-b genes and D-loop region. The molecular phylogenetic tree including 9 related Hemigobius generic group reveal that this new genus represents an independent clade which is …
Does High Organic Matter Content Affect Polychaete Assemblages In A Shenzhen Bay Mudflat, China?, Li-Zhe Cai, Jiang-Shiou Hwang, Hans-Uwe Dahms, Su-Jing Fu, Xin-Wei Chen, Chen Wu
Does High Organic Matter Content Affect Polychaete Assemblages In A Shenzhen Bay Mudflat, China?, Li-Zhe Cai, Jiang-Shiou Hwang, Hans-Uwe Dahms, Su-Jing Fu, Xin-Wei Chen, Chen Wu
Journal of Marine Science and Technology–Taiwan
Coastal areas are the first marine systems being impacted by anthropogenic pollution and eutrophication. Organic matter poses a particularly negative impact on the environment due to its oxygen depleting and eutrophying effects. Shenzhen Bay mudflat contains rich organic matter. Here, we compare changes of polychaete assemblage parameters on seasonal data obtained from a Shenzhen Bay mudflat in a three-year study. The results based on the seasonal and spatial variations of polychaete species number, density and biomass, ShannonWiener diversity index, evenness index and richness index confirmed that high organic matter content impacted their distribution. A significant negative correlation between the density …
Ninth East China Sea Conference 2013: International Conference On The Marine Biodiversity And Environmental Fisheries Science Of The East China Sea In Keelung, Taiwan, Ching-Fong Chang, Tai-Wen Hsu, I-Shiung Chen
Ninth East China Sea Conference 2013: International Conference On The Marine Biodiversity And Environmental Fisheries Science Of The East China Sea In Keelung, Taiwan, Ching-Fong Chang, Tai-Wen Hsu, I-Shiung Chen
Journal of Marine Science and Technology–Taiwan
No abstract provided.