Influence of broodstock diet on somatic growth, fecundity, gonad carotenoids and larval survival of sea urchin

2013 ◽  
Vol 46 (4) ◽  
pp. 969-976 ◽  
Author(s):  
Stefano Carboni ◽  
Adam D. Hughes ◽  
Tim Atack ◽  
Douglas R. Tocher ◽  
Herve Migaud
Keyword(s):  
Sea Urchin ◽  
Somatic Growth ◽  
Larval Survival ◽  
Broodstock Diet

Effects of nutrition on somatic growth and reproductive strategy of the sea urchin Pseudechinus huttoni

2010 ◽  
Vol 6 (3) ◽  
pp. 292-301 ◽  
Author(s):  
Hadi Poorbagher ◽  
Miles D. Lamare ◽  
Mike F. Barker
Keyword(s):  
Sea Urchin ◽  
Reproductive Strategy ◽  
Somatic Growth

scholarly journals Combined Effects of Temperature and Salinity on Hatching and Larval Survival of Commercially Important Tropical Sea urchin, Tripneustes gratilla (Linnaeus, 1758)

2020 ◽  
pp. 1-13
Author(s):  
Md. Shamim Parvez ◽  
M. Aminur Rahman ◽  
Md. Jahidul Hasan ◽  
Md. Habibur Rahman ◽  
Nawshin Farjana ◽  
...  
Keyword(s):  
Sea Urchin ◽  
Captive Breeding ◽  
Activity Index ◽  
Larval Survival ◽  
Interactive Effects ◽  
Salinity Range ◽  
Combined Effects ◽  
Tripneustes Gratilla ◽  
Commercial Species ◽  
Effects Of Temperature

The combined effects of temperature and salinity on percent hatching, normal larval rate at hatching, and survival of fasting larvae after hatching (survival activity index; SAI) of the commercial species of collector sea urchin, Tripneustes gratilla were investigated in a captive laboratory condition. The study was conducted by setting different levels of temperatures (24°C to 36°C) and salinities (38‰ to 23‰). Within the range of temperature from 24 to 36°C and at 32‰ salinity, hatching and normal larval rates, and SAI values were highest at 24 and 27°C. The highest hatching and normal larval rates were found at 35 and 38‰ within the salinity range of 23-38‰; however, SAI value was the highest at 26‰. The results of the experiments in each level of temperature (24, 27 and 30°C) with each salinity (32, 35 and 38‰) indicated interactive effects of temperature and salinity, and within the experimental protocols of 24°C at 38‰ gave an optimal combination for highest hatching and survival of T. gratilla. The findings obtained from the present research would not only be immensely helpful towards the understanding of the suitable temperature-salinity interactions but also facilitate the development of captive breeding, larval raising and mass seed production of this high-valued sea urchin for commercial aquaculture.

scholarly journals Optimizing dietary levels of menhaden and soybean oils and soybean lecithin for pre-gonadal somatic growth in juveniles of the sea urchin Lytechinus variegatus

Aquaculture ◽  
2015 ◽  
Vol 446 ◽  
pp. 198-205 ◽  
Author(s):  
Victoria K. Gibbs ◽  
Laura E. Heflin ◽  
Warren T. Jones ◽  
Mickie L. Powell ◽  
Addison L. Lawrence ◽  
...  
Keyword(s):  
Sea Urchin ◽  
Soybean Lecithin ◽  
Somatic Growth ◽  
Lytechinus Variegatus ◽  
Soybean Oils

Effects of temperature on hatching rate, embryonic development and early larval survival of the edible sea urchin, Tripneustes gratilla

Biologia ◽  
2009 ◽  
Vol 64 (4) ◽  
Author(s):  
Saifur Rahman ◽  
Makoto Tsuchiya ◽  
Tsuyoshi Uehara
Keyword(s):  
Embryonic Development ◽  
Sea Urchin ◽  
Water Environment ◽  
Life History Strategy ◽  
Open Water ◽  
Larval Survival ◽  
Temperature Tolerance ◽  
Hatching Rate ◽  
Tripneustes Gratilla ◽  
Higher Temperature

AbstractThe temperature tolerances of embryonic and early larval development stages of Tripneustes gratilla were investigated from 13-34°C under laboratory conditions. Zygotes showed unequal cleavage at 13°C, whereas cleavage did not occurred at 34°C. Hatching was observed between 16–31°C with maximum hatching rates observed at 22–29°C. The lower and higher temperature limits for embryonic development were approximately 22°C and 29°C, respectively. Outside of this temperature range, embryos showed abnormality at different incubation times. Early larvae of this species have the ability to survive the higher temperature limit for short periods of time. Prism and 2 arm pluteus larvae survived at temperatures between 30 and 33°C, whereas 4 arm pluteus larvae survived at temperatures between 30 and 36°C for 2 h. These results suggest that the larval temperature tolerance capability of T. gratilla is stage dependent. These findings are important for understanding the life history strategy of this sea urchin in the shallow open water environment.

Artificial diets in sea urchin culture: effects of dietary protein level and other additives on egg quality, larval morphometries, and larval survival in the green sea urchin, Strongylocentrotus droebachiensis

1995 ◽  
Vol 73 (11) ◽  
pp. 2080-2090 ◽  
Author(s):  
Marja de Jong-Westman ◽  
Pei-Yuan Qian ◽  
Beryl E. March ◽  
Thomas H. Carefoot
Keyword(s):  
Sea Urchin ◽  
Energy Content ◽  
High Protein Diet ◽  
Larval Survival ◽  
Strongylocentrotus Droebachiensis ◽  
High Protein ◽  
Protein Diet ◽  
Artificial Diets ◽  
Green Sea Urchin ◽  
Β Carotene

The effect of artificial diets on the size and energy content of eggs and morphometry, survival, and metamorphic success of larvae was investigated in the green sea urchin, Strongylocentrotus droebachiensis, from the standpoint of developing a good broodstock diet for culturists. Groups of sea urchins were fed eight diets over a period of 9 months, then five of these dietary groups were selected for detailed larval-growth studies. The artificial diets differed in protein content and in various additives including mannitol, algin, cholesterol, and β-carotene; a diet of air-dried kelp was also included. Egg-energy content was highest on a high-protein diet with cholesterol and β-carotene additives, and the largest eggs so far recorded for the species (2.39 mm3 × 10−3) were produced on a high-protein diet with cholesterol additive. Larval survival to metamorphosis was >92% for all diets save for kelp (<5%). Kelp-fed adults also produced poorly metamorphosing larvae (<2%), suggesting that air-drying causes chemical changes in the kelp that are ultimately detrimental to larval health. Larval developmental rates were fastest on the high-protein β-carotene formulation. Larvae from this diet group also had the longest arms relative to body length, largest rudiment diameter, largest absolute and relative ciliated-band length (for efficient feeding), and had a high percentage of metamorphosis. These data suggest that a high-protein β-carotene diet will be useful for conditioning broodstock by prospective sea urchin culturists.

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