Mortality Rate of Fish Seeds (<i>Labeo rohita</i>) During Traditional Transportation System in the Northwest Bangladesh

Abstract

This investigation deals with the mortality rate of fish seeds (Labeo rohita) during traditional transportation system; to evaluate the effects of loading density with time scale under different water medium; temperature effect with relation to fry size and oxygen consumption; and the effect of saline water bath before transportation. Mortality rates were significantly increased with time scale and loading density under different water medium. Higher mortality was observed at 400 g L -1 loading density (river water 82%, pond water 70% and tubewell water 67.5%) than at 200 g L -1 and 300 g L -1 loading density after 24h. Oxygen consumption rate increased significantly with increasing temperature and decreased significantly with increasing fry body weight. Therefore, mortality rate could decrease (22%) if fish fry are bathed in saline water before journey and tubewell water can be use as a medium for long distance transportation.

Anaesthetic efficacy of MS-222 and AQUI-S®in advanced size fry of rohu,Labeo rohita,(Hamilton-Buchanan)

“…The traditional methods of fish fry transportation result in heavy mortality owing accumulation of toxic wastes such as ammonia, decrease in pH due to high carbon dioxide build‐up, depletion of oxygen in the water, hyperactivity, stress and exhaustion of the fry and infection contracted during transport. Traditional methods of transportation of rohu, Labeo rohita fry mortality is up to 42.5% in Bangladesh (Islam & Hossain ). Transportation stress, physiological response and mortality with different packing density, journey length, transportation methods, water quality management in Rohu( Labeo rohita ) fry‐fingerlings have been emphasized by previous studies(Singh, Vartak, Balange & Ghughuskar ; Chatterjee, Pal, Das, Manush, Sarma, Venkateshwarlu & Mukherjee ; Hasan & Bart ,b; Chatterjee, Pal, Das, Dalvi, Mohammad, Sarma, Mukherjee & Baruah ; Hasan, Pinky, Kabir, Ahmed & Rashid ).…”

Review of the current situation, problems, and challenges in fish seed production and supply for Bangladesh's aquaculture development

“…Carps are the dominant fish species for seed production in most hatcheries in Bangladesh (Bhuyan et al, 2011;Hemal et al, 2017;Sharif and Abdulla-Al-Asif, 2015). This is due to the fact that freshwater aquaculture of carp has been proven to be sustainable over the years (Islam and Hossain, 2013). The production of carp seed through induced breeding has improved the progress in the country's aquaculture.…”

“…The fry trading season starts in April and continues until the end of September in Bangladesh (Islam and Hossain, 2013). Fish seed and brood fish are transported by vehicles such as auto-rickshaws, vans, and bicycles for short distances, while buses, trucks, trains, etc., are used for long-distance travel (Sharif and Abdulla-Al-Asif, 2015).…”

Seed value chain development in the Global South: Key issues and new directions for public breeding programs

“…Efforts to understand end-user preferences will need to address the heterogeneity in preferences for fish traits along the value chain. For example, hatcheries might be more interested in growth, survival, and resilience (Mehar et al, 2020) while the mode of transportation and distance travelled influence seed traders' demand for traits associated with survivability of fingerlings (Islam and Hossain, 2013). Studies have also assessed preferences for traits by different categories of farmers and across diverse environments (e.g.…”