The Journal of Marine Biology & Oceanography (JMBO) promotes rigorous research that makes a significant contribution in advancing knowledge for marine sciences. JMBO includes all major themes pertaining to organisms in the ocean or other marine or brackish water bodies.
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On the Optimization of Hydrolysis Conditions for Simultaneous Determination of Amino Acids and Amino Sugars in Marine Sediments
In the present work different approaches were tested for the optimization of the hydrolysis conditions for the joint determination of amino acids and amino sugars in chitin, an important structural polymer in fungi, invertebrates, algae and the exoskeleton of zooplankton. Ten treatments were evaluated, involving different combinations of hydrolysis temperature and duration. The obtained results indicate that slightly lower temperatures (105ºC) than for the classical combined amino acid hydrolysis and longer times (22 hours) than for chitin minimized losses and maximized recoveries of monomeric amino acids and amino sugars.
Anti-Tuberculosis Activity Present in a Unique Marine Bacteria Collection from Portuguese Deep Sea Hydrothermal Vents
Natural product drug discovery from untapped sources of microorganisms, such as the oceans, is full of innovative solutions and is again becoming increasingly explored by the pharmaceutical industry. In fact, interesting bioactivities such as anti-tumour, anti-microtubule and anti-proliferative have been successfully identified in the marine environment. Antibiotic properties of marine products, in particular, have been shown to be effective against several microbial infections and should be further explored for the treatment of infectious diseases such as Tuberculosis, which have become a great threat to global health.
Ecology and Distribution of Copepods from the Salt Pan Ecosystems of Mumbai, West Coast of India
Ecology, distribution and diversity of Copepod collected from two salt pans of Mumbai, India, are presented. Copepods, the main zooplankton components, consisted mainly of Bestiolina similis, Acartia southwelli, Oithona sp., O. similis, O. hebes and Mesochra sp. The species distribution showed pulses and peaks with harpacticoids dominating in extreme environmental conditions. The diversity and seasonal variations of species were considered in relation to environmental conditions. The study contemplates on the modification of a diverse community of copepods of the creek salt works into a simplified ecosystem of low complexity based on the influence of environmental factors on the copepods density.
Human Health Hazard due to Metal Uptake via Fish Consumption from Coastal and Fresh Water Waters in Eastern India Along the Bay of Bengal
Concentrations of copper, zinc, manganese, and iron were determined in muscle tissue of coastal fish (Pumpus argentius, Tenulosa ilisha and Rastrelliger kanagurta) and fresh water fish (Hypophthalmichthys molithrix and Cirhinnus mrigela) samples from West Bengal, India, for assessing the potential health risk to human population. The concentrations of Cu, Zn, Mn and Fe in coastal fish muscles were ranged between 0.79-4.0 mg kg-1 dw, 5-29 mg kg-1 dw, 0.50-5.0 mg kg-1 dw and 20-75 mg kg-1 dw, respectively, and in fresh water fish, they were in the ranges of 5.0-28 mg kg-1 dw, 33-51 mg kg-1 dw, 2.0-6.0 mg kg-1 dw and 38- 110 mg kg-1 dw, respectively. The pattern of metals accumulation was in order of Fe > Zn > Cu > Mn. The results showed that the concentrations of metals in studied fish muscles were all lower than recommended guideline values.