Artificial UV-B induced changes in pigmentation of marine diatom Coscinodiscus gigas.

In vitro studies in marine diatom Coscinodiscus gigas revealed that artificial UV-B radiation (313 nm) at a dose level of 0.4W m(-2) for a continuous period of 3 hours in a UV treatment chamber caused disbursement of chromatophores from their normal loci and resulted in clumping / aggregation of chromatophores exhibiting a phenomenon called UV-B induced syntrophism. It is also understood that such clumping could cause only insignificant reduction in photosynthetic oxygen release.

Evaluation of methanol extract of mole crab Emerita asiatica for its pathological properties using mouse assay.

A The methanol extract of marine mole crab, Emerita asiatica was tested for its pharmacological property using mouse assay. The vital organs viz.heart and lungs showed oedema and degeneration of cardiac muscles, markedly congested blood vessels and haemorrhagic exudates involving entire alveolar parenchyma in the lungs. The extract is seemed to influence negatively on the structure and functions of heart and lungs and non site-specific changes in the brain of mice.