International Conference on Aquaculture & Fisheries July 20-22, 2015 Brisbane, Australia

Shweta Dhindhwal is currently a Junior Researh Fellow in Department of zoology, University of Delhi, Indiarn

Dopamine is an essential neurotransmitter in the central nervous system of all vertebrates and plays an important role in many processes such as motor function, learning and behavior, and sensory activity.Oneof the important functions of dopamine is release of pituitary hormones. It is synthesized from the amino acid tyrosine. Two types of dopamine receptors, D1-like and D2-like, have been reported in fish. The dopamine containing neurons are located in the olfactory bulbs, the ventral regions of the pre-optic area and tuberal hypothalamus. Distributionof the dopaminergic system has not been studied in the murrel, Channapunctatus. The present study deals with identification of D2 receptors in the brain of murrel.A phylogenetic tree has been constructed using partial sequence of D2 receptor. Distributionofputative dopaminergic neurons in the brain has been investigated. Also formalin induced hypertrophy of neurosecretory cells in murrel has been studied. An attempt has been made to show the development of dopaminergic system in the brain of zebra fish.

Seema Jain is working as an Associate professor in Department of Zoology, R.G.P.G. College, Meerut, India. She has an research experience of more than 30 years in the field of Fish Taxonomy and Fish Immunologyrn

Curcumin an orange yellow phytochemical hydrophobic and polyphenolic compound of turmeric (Curcuma longa, Linn. ) has been known to be a potent immunomodulatory agent in many animal species.The aim of our study as to evaluate the immunomodulatory properties and disease resistance against the opportunistic pathogen Aeromonas hydrophila in Channa punctatus. Fishes were challenged intraperitoneally with a dose of Aeromonas hydrophila (1X108 cells/ml). Control and Immunocompromised fishes were given three different doses of curcumin viz. 0.5 mg, 1.0 mg, 1.5 mg/ 100 gm of body weight respectively. Treated fishes were sacrificed on 3rd, 5th, 7th and 10th day after the dose was given and various Non specific immune parameters were assessed viz. Percentage Phagocytosis, Phagocytic index, lysozyme assay, Bactericidal activity and Superoxide anion production. All the non-specific immune parameters were enhanced significantly, but the maximum enhancement was seen on the fif!rn th day with the dose of 1.0 mg/ 100gm body weight and the same dose also showed maximum disease resistance as compared to other two dosesrn

Chitin and chitosan are valuable natural biopolymers which attracted attention due to their biomedical applications and can be extracted from crustacean shells through chemical and microbial processes. In this study, deproteination and demineralization efficiencies of shrimp waste using two Lactobacillus species treated with different carbohydrate sources for chitin production, its chemical conversion to chitosan and the quality of chitin and chitosan produced were determined. Using 5% glucose and 5% cassava starch as carbohydrate sources, pH slightly increased from the initial pH of 6.0 to 6.8 and 7.2, respectively after 24 h and maintained their pH at 6.7 to 7.3 throughout the treatment period. Demineralization (%) in 5% glucose and 5% cassava was highest during the first day of treatment which was 82% and 83%, respectively. Deproteination (%) was highest in 5% cassava starch on the 3rd day of treatment at 84.4%. The obtained chitin from 5% cassava and 5% glucose had a residual ash and protein below 1% and solubility of 59% and 44.3%, respectively. Chitosan produced from 5% cassava and 5% glucose had protein content below 0.05%; residual ash was 1.1% and 0.8%, respectively. Chitosan solubility and degree of deacetylation were 56% and 33% in 5% glucose and 48% and 29% in 5% cassava, respectively. The advantage this alternative technology offers over that of chemical extraction is large reduction in chemicals needed thus less effluent production and generation of a protein-rich liquor, although the demineralization process should be improved to achieve greater degree of deacetylation

Farramae Francisco has completed her bachelor’s degree in Fisheries in 2012 at the University of the Philippines Visayas. She recently finished her graduate studies in the same university under the full time scholarship of Department of Science and Technology-Accelerated Science and Technology Human Resources Department Program (DOST-ASTHRDP) with the degree Master of Science in Fisheries, Major in Fish Processing Technology.