Anti-Bacterial Activity of Natural Plants on Fish Pathogens Isolated from Different Ponds of Dhaka City

Abstract

In aquaculture, the incidence of bacterial resistance towards synthetic antibiotics has become a serious problem. Therefore, current research has been focused on detecting the presence of pathogenic bacteria in water bodies and finding a novel therapy against pathogens imparted by the natural products replacing the use of synthetic antibiotics. A total of 10 pond water samples were analysed to determine the pathogenic load employing conventional cultural and biochemical tests. Anti-bacterial activities of natural plants on fish pathogens were determined using the agar-well-diffusion method. All the water samples studied high heterotrophic bacteria counts, which were upto 10 9 cfu/ml. Among bacterial pathogens, Pseudomonas spp. and Vibrio spp. were found to be present in 6 samples and Aeromonas spp. in 2 samples. The in vitro anti-bacterial activity of the herbal plant extracts against the bacterial pathogens revealed that most of the plant extracts are effective against the pathogenic bacterial isolates.

Incidence of Antibiotic Resistant Bacteria In Fish Sold In Local Market In Dhaka City

“…The development of drug-resistance might be due to amazing genetic abilities of microbes, misuse of antibiotic and several epidemiologic influences (21)(22)(23). For fish borne disease outbreaks to be effectively managed, such resistance to drugs must be resolved (24,25). Furthermore, with increased antibiotic resistance and their side effects, using herbal products to eliminate fish pathogens could be a safer, more cost-effective and more effective solution than antibiotics (24,25).…”

“…For fish borne disease outbreaks to be effectively managed, such resistance to drugs must be resolved (24,25). Furthermore, with increased antibiotic resistance and their side effects, using herbal products to eliminate fish pathogens could be a safer, more cost-effective and more effective solution than antibiotics (24,25).…”

Fishing Gears and Crafts Used by the Fishers at Lohalia River in Patuakhali

“…), Koi (Anabas testudineus), Gulsha (Mystus cavasius) and Baim (Mastacembelus armetus). The net is also used in Potuakhali, Barishal, Comilla, Dhaka, and Chittagong district of Bangladesh (Das and Banerjii, 2000). Drag nets/push nets are held apart with triangular bamboo frame and pushed manually to fish in the traditional waters of river, beels and floodplains, locally called Thela Jal.…”