July 2020

Use of different colours of vertically-suspended structure during the hatchery rearing of juvenile landlocked fall Chinook salmon (Oncorhynchus tshawytscha, Walbaum)

This study investigated the effects of coloured structures on the growth of juvenile landlocked fall Chinook salmon (Oncorhynchus tshawytscha, Walbaum) during hatchery rearing. Structures consisted of an array of four aluminum angles painted one of four colours: Silver, red, black and green, which were vertically suspended in circular tanks. After 25 days, mean total lengths and weights of individual salmon reared in...

Author(s): Misty D. Jones, Jill M. Voorhees, Nathan Huysman, Eric Krebs and Michael E. Barnes  

August 2020

Effect of stocking density on growth and survival of Nile tilapia (Oreochromis niloticus, Linnaeus 1758) under cage culture in Lake Albert, Uganda

In Uganda fish is a great source of animal dietary protein, however, natural stocks continue to decline. Therefore, aquaculture provides a viable option to bridge the increasing fish supply-demand gap. Accordingly, a study was conducted from March to August 2016 to investigate the effect of stocking density on the growth performance, and survival of Nile tilapia (Oreochromis niloticus) in floating net-cages to...

Author(s): Ivan Abaho, Thaddeus Zaabwe, Andrew Izaara, Howard N. Kasigwa, Norman Mushabe, Steven Byenkya, Mujibu Nkambo, Sylvester D. Baguma, David L. N. Hafashimana and Jackson Efitre  

November 2020

Socio-economic and cultural values of two species of crabs (Cardisoma armatum Herklots and Callinectes amnicola Rochebrune) in Southern Benin, Africa: Management of post-harvest losses and exoskeletons

Crabs play an important economic and bio-ecological role in most aquatic ecosystems and occupy an important place in the variety of trophic niches. Callinectes amnicola Rochebrune and Cardisoma armatum Herklots are two edible species widely exploited in Benin. The present work aims to i) evaluate the socio-economic and cultural importance of those two crab species, ii) analyze the dynamics of the value chain, and iii)...

Author(s): Toussaint Mikpon, Durand Dah-Nouvlessounon, Nadège Adoukè Agbodjato, Halfane Lehmane, Olaréwadjou Amogou, Christine N’Tcha, Wassiyath Mousse, Haziz Sina, Hyacinthe Ahissou, Adolphe Adjanohoun and Lamine Baba-Moussa  

December 2020

Water activity, microbial and sensory evaluation of smoked fish (Mormyrus caschive and Oreochromis niloticus) stored at Ambient Temperature, Terekeka-South Sudan

The effect of smoking kilns on water activity, microbial load and sensory attributes was evaluated to adopt suitable technology that maintains the quality of fish in South Sudan. A total of 300 fresh Mormyrus caschive and Oreochromis niloticus were purchased, 36 fresh samples were iced and the remaining 264 fish samples were divided into two batches for pit and chorkor smoking. The experiment was done twice in a...

Author(s): Borodi Charles Mondo, Peter Akoll and Margaret Masette