scholarly journals Correlation between Ambient Seawater Temperature and Strontium-calcium Concentration Ratios in Otoliths of Red Sea Bream Pagrus Major

1996 ◽  
Vol 62 (4) ◽  
pp. 652-653 ◽  
Author(s):  
Nobuaki Arai ◽  
Wataru Sakamoto ◽  
Kuniko Maeda
Keyword(s):  
Red Sea ◽  
Calcium Concentration ◽  
Seawater Temperature ◽  
Sea Bream ◽  
Red Sea Bream ◽  
Pagrus Major ◽  
Ambient Seawater ◽  
Concentration Ratios

PIXE ANALYSIS OF OTOLITHS FROM REARED RED SEA BREAM, Pagrus major(Temminck et Schlegl)

1993 ◽  
Vol 03 (04) ◽  
pp. 275-281 ◽  
Author(s):  
NOBUAKI ARAI ◽  
WATARU SAKAMOTO
Keyword(s):  
Red Sea ◽  
Calcium Concentration ◽  
Seawater Temperature ◽  
Marine Fishes ◽  
Sea Bream ◽  
Red Sea Bream ◽  
Pagrus Major ◽  
Mineral Concentration ◽  
Pixe Analysis ◽  
X Ray

PIXE analysis was applied to estimate mineral concentration in red sea bream otoliths without cutting or polishing. Detected elements include Sr, Fe, Mn and Zn, which are commonly found in the otoliths in marine fishes. Strontium-Calcium concentration ratio is calculated by means of combined X-ray yields. The ratio doesn’t indicate dear correlaion with mean reared seawater temperature. It is caused by the diffraction error induced by rough topographies of the otoliths surface.

Purification, characterization, and molecular cloning of group I phospholipases A2 from the gills of the red sea bream, Pagrus major

Lipids ◽  
2000 ◽  
Vol 35 (12) ◽  
pp. 1359-1371 ◽  
Author(s):  
Noriaki Iijima ◽  
Satoshi Uchiyama ◽  
Yukichi Fujikawa ◽  
Muneharu Esaka
Keyword(s):  
Molecular Cloning ◽  
Red Sea ◽  
Sea Bream ◽  
Red Sea Bream ◽  
Pagrus Major ◽  
Phospholipases A2 ◽  
Group I

Hypoxic conditions induce centrum defects in red sea bream Pagrus major (Temminck and Schlegel)

2006 ◽  
Vol 37 (8) ◽  
pp. 805-812 ◽  
Author(s):  
Yoshifumi Sawada ◽  
Manabu Hattori ◽  
Naoko Sudo ◽  
Keitaro Kato ◽  
Yasuaki Takagi ◽  
...  
Keyword(s):  
Red Sea ◽  
Sea Bream ◽  
Red Sea Bream ◽  
Pagrus Major ◽  
Hypoxic Conditions

scholarly journals Estimation of the Metabolic Rate of Wild Red Sea Bream Pagrus major in Different Water Temperatures.

1999 ◽  
Vol 65 (1) ◽  
pp. 48-54 ◽  
Author(s):  
Yasushi Mitsunaga ◽  
Wataru Sakamoto ◽  
Nobuaki Arai ◽  
Akihide Kasai
Keyword(s):  
Metabolic Rate ◽  
Red Sea ◽  
Sea Bream ◽  
Red Sea Bream ◽  
Pagrus Major

scholarly journals Effect of colored light regimes on the stress response and RNA/DNA ratio of juvenile red sea bream, Pagrus major

2017 ◽  
Author(s):  
Gunzo Kawamura ◽  
Teodora Uy Bagarinao ◽  
Kazuhiko Anraku ◽  
Masaru Okamoto
Keyword(s):  
Red Sea ◽  
Plasma Cortisol ◽  
Red Light ◽  
Somatic Growth ◽  
Sea Bream ◽  
Red Sea Bream ◽  
Pagrus Major ◽  
Full Spectrum ◽  
Light Regimes ◽  
Different Color

We hypothesized that fish with red-sensitive retina would be stressed by red light and thus inhibited in somatic growth. Red sea bream (Pagrus major) juveniles (total length =3 cm) with red-sensitive retina were chosen to test this hypothesis. We examined the effect of different color lights (red with λmax 605 nm; green with λmax 540 nm; blue with λmax at 435 nm; and white with full spectrum) on unfed juveniles in laboratory tanks. Stress level was measured by the plasma cortisol and glucose concentrations, and nutritional status by muscle RNA/DNA ratio. Under red light, plasma cortisol and glucose, and muscle RNA/DNA were significantly higher than under green, blue, or white light. Our hypothesis was partly supported by previous findings on the effects of the color environment and spectral sensitivity of reared fishes. However, the levels of cortisol, glucose, and RNA/DNA in this study were low compared to published values. It seems that hatchery-bred juvenile red sea bream have adapted to red-rich surface light and are able to cope with the stress of living in surface floating cages which is so different from their deep-water habitats.

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