Juniper Publishers-Oceanography Open Access Journal

  Abstract Availability of nutritionally balanced commercial feeds is essential in producing healthy, high-quality aquatic animals. Protein is the most important component of aquaculture feeds. Fish require not only a minimum level of protein but also that the essential amino acids are balanced to meet the requirements of each single one. Histidine is an essential amino acid with several functions including protein synthesis, tissue formation and repair as well as maintenance of osmoregulation and myelin sheaths. It also regulates the immune system and acts as antioxidant in fish. Histidine deficiency depresses growth performance and feed utilization. If in excess, it causes disruption of the balance of dietary amino acids leading to toxicity or extensive necrosis in the epithelial cells. Furthermore, histidine serves as an important antioxidant and buffer in various organs of several fish species. In aquaculture, extensive research has been carried out to optimiz...

Abstract The anadromous Tenualosa ilish is the most economically important fish in the world and consequently in Iran. The national fish of Iranian contributes about 12% of the total fish production and about 1% of GDP. About 4,500,000 people are directly involved with the catching for livelihood; around four to five million people are indirectly involved with the trade. The present study aimed to estimate 96hLC 50s of silver and selenium on LC 50 of nanoparticle of silver and selenium in different life stages of the fish T. ilish in the environment experimental. The LC 50 for silver in four stages of fish T. ilish were larvae (0.23ppm), fry (0.45ppm), juvenile (0.90ppm) and fingerling (1.45ppm), respectively. There was significance difference between LC 50 levels in four stages of fish species (P<0.05>) and the LC 50 for selenium in four stages of fish T. ilish were larvae (0.89ppm), fry (0.95ppm), juvenile (1.12ppm) and fingerling (1.65ppm), respectively. ...

  Juniper Publishers -  Journal of Oceanography Abstract Recently luminous  Vibrio campbellii  has been recognised as a cosmopolitan pathogen in seafood and aquaculture industry. The significance of this study is to present the findings derived from longer-term starvation experiment on intense luminescence producing bacteria  Vibrio campbellii  strain STF1. This strain was isolated from surface swab of  Synanceia verrucosa  (stone fish) and subjected to the starvation-survival procedure. The viability rate of this culture was determined following spread plate method by counting viable cells in starter inoculum and in the same starvation culture. It was observed that 90 to 95% of luminous bacteria could remain viable for over 4 years under nutrient deficiency condition. This study also determines the effectiveness of the preservation of luminous bacteria in sterile sweater. Keywords:  Luminous bacteria; Vibrio campbellii; Starvation; Survival ...

  Juniper Publishers -  Journal of Oceanography Abstract The study examines India’s performance based on its publication output in Oceanography literature during 2011–2015, based on various aspect of the oceanography research such as growth of papers (year wise), most prolific authors, document types, institutions involved, Sources wise distribution, subject wise distribution of publications and international collaboration linkages. The study reveals that, most of the researchers preferred to publish their research results in journals; as such 1.92% of articles were published in journals, more numbers of articles were published in the year 2015, the study shows that overall average citation per paper was 2.32, all the studies will be helpful for its further development. Further this study also identified to analyses coverage growth rates, coverage growth rates, source wise. Degree of collaboration, institutions wise and Geographical wise distribution of the literature. Keyword...

  Juniper Publishers -  Journal of Oceanography Abstract The study examines India’s performance based on its publication output in Oceanography literature during 2011–2015, based on various aspect of the oceanography research such as growth of papers (year wise), most prolific authors, document types, institutions involved, Sources wise distribution, subject wise distribution of publications and international collaboration linkages. The study reveals that, most of the researchers preferred to publish their research results in journals; as such 1.92% of articles were published in journals, more numbers of articles were published in the year 2015, the study shows that overall average citation per paper was 2.32, all the studies will be helpful for its further development. Further this study also identified to analyses coverage growth rates, coverage growth rates, source wise. Degree of collaboration, institutions wise and Geographical wise distribution of the literature. Keyword...