scholarly journals The effect of fresh seaweed and a formulated diet supplemented with seaweed on the growth and gonad quality of the collector sea urchin, Tripneustes gratilla , under farm conditions

2020 ◽  
Vol 51 (10) ◽  
pp. 4087-4102
Author(s):  
Abigail J. Onomu ◽  
Niall G. Vine ◽  
Mark D. Cyrus ◽  
Brett M. Macey ◽  
John J. Bolton
Keyword(s):  
Sea Urchin ◽  
Formulated Diet ◽  
Tripneustes Gratilla ◽  
Gonad Quality

scholarly journals Protein Level and Protein Energy Ratio that Produce the Best Gonad Quality of Sea Urchin Tripneustes Gratilla

2014 ◽  
Vol 5 (1) ◽  
pp. 95
Author(s):  
Agnette T ◽  
M. Zairin ◽  
Mokoginta Mokoginta ◽  
M. A. Suprayudi ◽  
F. Yulianda
Keyword(s):  
Sea Urchin ◽  
Protein Level ◽  
Energy Ratio ◽  
Protein Energy ◽  
Tripneustes Gratilla ◽  
Gonad Quality

Effects of three feeding models on growth,gonad yield and gonad quality of the sea urchin(Strongylocentrotus intermedius)

2013 ◽  
Vol 37 (7) ◽  
pp. 1050 ◽  
Author(s):  
Haisen ZHOU ◽  
Yaqing CHANG ◽  
Shibin LUO ◽  
Xiaofei TIAN ◽  
Weijie ZHANG ◽  
...  
Keyword(s):  
Sea Urchin ◽  
Strongylocentrotus Intermedius ◽  
Gonad Quality

Gonad quality of sea urchin Paracentrotus lividus cultured in an offshore pilot-scale trial on the south-east Italian coast

2018 ◽  
Vol 24 (5) ◽  
pp. 1444-1455 ◽  
Author(s):  
M.G. Volpe ◽  
A. Fabbrocini ◽  
F. Siano ◽  
E. Coccia ◽  
G. Scordella ◽  
...  
Keyword(s):  
Sea Urchin ◽  
Paracentrotus Lividus ◽  
Pilot Scale ◽  
The South ◽  
Gonad Quality ◽  
Italian Coast

Improvement of gonad quality of the sea urchin Mesocentrotus nudus fed the kelp Saccharina japonica during offshore cage culture

Aquaculture ◽  
2017 ◽  
Vol 477 ◽  
pp. 50-61 ◽  
Author(s):  
Satomi Takagi ◽  
Yuko Murata ◽  
Eri Inomata ◽  
Hikaru Endo ◽  
Masakazu N. Aoki ◽  
...  
Keyword(s):  
Sea Urchin ◽  
Saccharina Japonica ◽  
Cage Culture ◽  
Mesocentrotus Nudus ◽  
Gonad Quality

scholarly journals Gonad quality of sea urchin Tripneustis gratilla with different seaweed diets

2020 ◽  
Vol 18 (2) ◽  
pp. 214-221
Author(s):  
Agnette Tjendanawangi ◽  
Nicodemus Dahoklory
Keyword(s):  
Sea Urchin ◽  
Maturity Index ◽  
Second Phase ◽  
Gonad Weight ◽  
Carotene Content ◽  
Gonad Maturity ◽  
Potential Source ◽  
Gonad Quality ◽  
Β Carotene

ABSTRACT   Gonad quality of sea urchin Tripneustis gratilla is influenced by consumed seaweed type. Therefore, this study was conducted to determine the type of seaweed as potential source of carotenoids and produce a good quality of sea urchin gonad. The study was conducted in two phases, namely first phase was to obtain the content of carotenoids and β-carotene from several species of seaweed; and second phase was to testify the seaweed that produced high quality of sea urchin gonad.This study used completely randomized design with 4 treatmens of macroalgae diets, namely: 1. Enhalus sp., 2. Sargassum sp., 3. Ulva sp., and 4. Eucheuma sp. Each treament was repeated three times. Measured parameters were gonad weight, gonad maturity index, gonad color quality, and gonad texture.  The study result showed that Enhalus contained the highest carotenoid and β-carotene content with 1409.53 and 639.37 mg/kg respectively. The highest gonad weight was 2.8 g; gonad color and texture was good (score 3); and the highest gonad maturity index was 5.4% that obtained from sea urchin fed with Enhalus. Therefore, this study concludes that Enhalus is potential source of carotenoids for sea urchin T. gratilla diet that will produce a good quality of gonad.   Keywords: carotenoid, diet, gonad quality, sea urchin, seaweed.

scholarly journals Effect of beat frequency on the velocity of microtubule sliding in reactivated sea urchin sperm flagella under imposed head vibration.

1995 ◽  
Vol 198 (3) ◽  
pp. 645-653 ◽  
Author(s):  
C Shingyoji ◽  
K Yoshimura ◽  
D Eshel ◽  
K Takahashi ◽  
I R Gibbons
Keyword(s):  
Sea Urchin ◽  
Vibration Frequency ◽  
Beat Frequency ◽  
Distal Region ◽  
Bend Angle ◽  
Vibration Frequencies ◽  
Sliding Velocity ◽  
Flagellar Beat ◽  
Tripneustes Gratilla ◽  
Sea Urchin Sperm

The heads of demembranated spermatozoa of the sea urchin Tripneustes gratilla, reactivated at different concentrations of ATP, were held by suction in the tip of a micropipette and vibrated laterally with respect to the head axis. This imposed vibration resulted in a stable rhythmic beating of the reactivated flagella that was synchronized to the frequency of the micropipette. The reactivated flagella, which in the absence of imposed vibration had an average beat frequency of 39 Hz at 2 mmol l-1 ATP, showed stable beating synchronized to the pipette vibration over a range of 20-70 Hz. Vibration frequencies above 70 Hz caused irregular, asymmetrical beating, while those below 20 Hz induced instability of the beat plane. At ATP concentrations of 10-100 mumol l-1, the range of vibration frequency capable of maintaining stable beating was diminished; an increase in ATP concentration above 2 mmol l-1 had no effect on the range of stable beating. In flagella reactivated at ATP concentrations above 100 mumol l-1, the apparent time-averaged sliding velocity of axonemal microtubules decreased when the imposed frequency was below the undriven flagellar beat frequency, but at higher imposed frequencies it remained constant, with the higher frequency being accompanied by a decrease in bend angle. This maximal sliding velocity at 2 mmol l-1 ATP was close to the sliding velocity in the distal region of live spermatozoa, possibly indicating that it represents an inherent limit in the velocity of active sliding.(ABSTRACT TRUNCATED AT 250 WORDS)

scholarly journals RESEARCH ON THE COMPONENT OF LIPID CLASSES, FATTY ACID, AMINO ACIDS FROM EGG AND BODY OF SEA URCHIN TRIPNEUSTES GRATILLA (LINNAEUS, 1758)

2018 ◽  
Vol 56 (4A) ◽  
pp. 30
Author(s):  
Kim Hoa Thi Dinh
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
Fatty Acid ◽  
Sea Urchin ◽  
Total Lipid ◽  
Yellow Sea ◽  
Lipid Classes ◽  
The Yellow Sea ◽  
Viet Nam ◽  
Tripneustes Gratilla

ABSTRACT – HCTN 06The Sea urchin Tripneustes gratilla (Linnaeus, 1758) is a famous species of invertebrate member of the phylum Echinodermata of marine animals living in shallow tropical water. In Viet Nam, it is usually called by the name of yellow sea urchin. This species is mentioned much about its economic and commerce properties. Recently, many researchers have been paying attention to sea urchin because of its positive effect on human health. In terms of medicine and nutrition, the egg of yellow sea urchin was rich in Polyunsaturated Fatty Acids (PUFAs) and essential amino acids. In this research, we focused on determining the total lipid contents, the components of lipid classes and the compositions and contents of fatty acids, amino acids from the body and the egg of the yellow sea urchin T. gratilla (Linnaeus, 1758) collected in Hon Tam, Nha Trang, Khanh Hoa, Viet Nam in 2016. Although the yellow sea urchin T. gratilla has low percentage of total lipid in fresh weigh basis, they are full of essential lipid ingredients such as Wax and Hydrocabon (H + W), Triacylglycerol (TG), Monodiacylglycerol MDAG, Free Fatty Acid (FFA), sterol (ST), and Polar Lipid (PL). In both egg and body samples palmitic acid (16:0) was the most abundant fatty acid with the proportion of about 25%. In addition, arachidonic acid (20:4n-6) is dominent Omega-6 fatty acid in the Monounsaturated Fatty Acid group (MUFA). Furthermore, the research result also showed the very high percentages of omega-3 fatty acids in the egg and body of T. gratilla, with the total contents of 13.97% and 20.67% respectively, especially the presence of eicosapentaenoic fatty acid (C20:5n-3, EPA), a very valuable fatty acid. By the HPLC method, the research also found 17 amino acids in the egg and body of T. gratilla with the existence of 7 essential amino acids.Keywords: Tripneustes gratilla, lipid classes, yellow sea urchin, echinodermata, fatty acid content. 

Hepatopancreas and Gonad Quality of Chinese Mitten Crabs Fattened with Natural and Formulated Diets

2013 ◽  
Vol 36 (3) ◽  
pp. 217-227 ◽  
Author(s):  
Luchang Shao ◽  
Chun Wang ◽  
Jie He ◽  
Xugan Wu ◽  
Yongxu Cheng
Keyword(s):  
Formulated Diets ◽  
Mitten Crabs ◽  
Gonad Quality
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