Abstract
Plant extracts are a cost effective, ecologically friendly, and efficient alternative for the large scale synthesis of nanoparticles. In the present study, calophyllum inophyllum. Leaf extract was used for silver nanoparticles synthesis by the reduction of silver ions. A change in colour to dark brown indicated the formation of silver nanoparticles. The formed silver nanoparticles were further characterized by UV spectral analysis, FTIR and scanning electron Microscopy (SEM) . UV analysis gave a prominent peak at which is characteristic to the silver nanoparticles. FTIR analysis revealed the compounds responsible for the formation of nanoparticles. SEM studies indicated that the formed particles were spherical in shape and most of the particles were within the range 70 to 100 nm. The antimicrobial property of the particles was also tested.

201604026 ANTIFUNGAL ACTIVITY OF SILVER NANO PARTICLES SYNTHESIZED BY USING LEAF EXTRACT

Abstract
Protease have a characteristic of biotechnological interest and have become industrial enzyme. The present study was undertaken to isolate and characterize the protease producing Bascillus subtilis bacteria from gut of fresh water fish Puntius ticto. Gelatin was used as the substrate in nutrient agar medium for screening and showed the maximum zone of activity (21mm) after overnight incubation and addition of the indicator in .The bacterial isolate were identified on the basis of characterized by morphological and biochemical studies. The extracellular protease production was enhanced by optimizing the culture condition. The effect of different production parameter such as temperature of 30̊ C, pH -8.0, incubation time 36 hrs, 1% starch and 1% yeast extract were optimized for maximum yield of protease enzyme.

201604025 ISOLATION AND SCREENING OF PROTEOLYTIC BACTERIA FROM FRESH WATER

Abstract
Ethnobotany is a study of plants which are used for various ailments and as edibles of the wild. The river Cauvery has its own basin with a notable plant and animal biodiversity. In our study it was found that almost 20 plants are frequently used for human diseases. It was also noted that leaves, fruits, seeds, roots, barks and latex are used for the cure of various ailments. Though our study it was concluded that a huge range of medicinal plants were found in cauvery river delta and it can be used for various human ailments.

201604023 Ethno botanical studies on Cauvery delta region of Kumbakonam

Abstract
There has been a widespread world-wide use of flathead mullet, Mugil cephalus, in fish bio monitor studies within the coastal zone. In the present study accumulation of heavy metal Zn, Cd, Hg and Pb in muscle sample of fish Mugil cephalus was estimated in southeast coastal region of Nagapattinam, Karaikal and Tharangambadi, East coast of India. The results revealed that there is elevated level in the metals in muscle of the Mullet and it was found to be Zn> Cd> Hg> Pb. Among the study areas Karaikal costal showed higher accumulation of metals then the Nagapattinam and Tharangambadi. Current investigation concluded that there is heavy metal pollution. Also Fin fish Mugil cephalus can be consider as a good indicator species.

201604022 Bioaccumulation of Heavy Metals on Fin-Fish Mugil cephalus from Nagapattinam

Abstract
The present study was carried out to evaluate the growth performance and productivity of three different seaweeds such as (Gracillaria, Sargassum, Enteromorpha) and growth and survival of Peneaus monodon. These three species of seaweeds were cultured in a tiger shrimp pond at density of 2 kg/m3. Density of tiger shrimp was 20 juvenile /m3. This experiment needs conducted in 28 days. Growth parameters were observed after 28 days of the experiments. The shrimp productivity was evaluated from the rate of shrimp survival, final individual size, growth and biomass production. Seaweeds biomass production was also observed. Collected data was analyzed using one way ANOVA, Results obtained from the present study indicates that seaweeds tend to increase shrimp productivity, it was observed by higher survival, individual size, and growth rate and shrimp biomass production. Gracillaria in increasing shrimp Gracillaria showed more productivity compared to Sargassum and Enteromorpha. It is recommended to use Gracillaria modal in integrated with tiger shrimp.

201604021 .Studies on the Role of Marine Algae Gracillaria, Sargassum and Enteromorpha on Growth Performance