Tissue Parameters of the Sea Urchin (Paracentrotus Lividus): The Effects of Magnesium and Transport Stress
| Autor: | Saloua Sadok, Amor El Abed, Soumaya Arafa |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Magnesium Chloride
Medicine (miscellaneous) chemistry.chemical_element Mineralogy Transportation Test (biology) Paracentrotus lividus Cell size Protein content Animal science Stress Physiological biology.animal Animals Tissue Distribution Tissue distribution Amino Acids Gonads Sea urchin Cell Size Nutrition and Dietetics biology urogenital system Magnesium Humidity Organ Size General Medicine biology.organism_classification Germ Cells chemistry Sea Urchins Transport stress |
| Zdroj: | Nutrition and Health. 19:203-214 |
| ISSN: | 2047-945X 0260-1060 |
| DOI: | 10.1177/026010600801900307 |
| Popis: | The present study investigates some biochemical and biological variables in sea urchins (Paracentrotus lividus) that were stressed in the course of collection, transportation and laboratory conditioning and the effect thereon of pre-treatment with a test compound; magnesium chloride (MgC12). Handling and transportation for 5h resulted in significantly decreased gonadal indices due to unplanned spawning. The pre-treatment of sea urchins with 5 mmol 1(-1) MgCl2 reduced unplanned spawning during all of the experiments. Protein content and humidity were significantly higher (p0.05) in sea urchins treated with Mg than in the control group, these differences between groups were maintained throughout the experimental period. The analyses of gonad mineral compounds (Na+, K=, P, Ca2+ and Mg2+) showed a significantly higher (p0.05) Na+ and K+ tissue contents in the Mg-treated group than the control group throughout the conditioning period. Phosphorus with initial similar levels in both groups, however, showed a significantly higher gonad level (p0.05) in the Mg-treated group towards the end of the experiment (9 days). |
| Databáze: | OpenAIRE |
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