VectoBac DT, a tablet formulation of Bacillus thuringiensis israelensis (Bti) was evaluated for the potential control of dengue vectors in various types of potable water containers. On introduction to containers, the tablet sinks to the bottom and the Bti toxins are found concentrated at the sides and the base, while the treated water column is free of Bti toxins within 24 hours after tablet in...

A few years ago, William Logan wrote, “Poetry has long been a major art with minor audience.”1 We could more accurately call it many audiences grouped, like the poets, around region, identity, ideology, and artistic affiliations—a fragmentation that makes generalizations difficult. It is not easy to place in larger context three books I am reviewing here—Tyler Chadwick's Litany Wings, Scott Hal...

The aim of this study was to contribute the development tilapia aquaculture in Côte d’Ivoire by increasing productivity Oreochromis niloticus fry fish hatcheries. Thus, production larvae compared between two breeding systems, earthen ponds and hapas ponds. Over 98 days, 900 broodstock were allowed reproduce 500 m2 others 20 50 m2, each installed 1200 m2. sex ratio one male for females at a dens...

Heavy metals were determined in samples of fish tissues, soil, and water from nine randomly selected farms based on production facility (earthen pond) the Ekiti Central (EC), North (EN) South (ES) senatorial districts state. Fresh collected tissues dorsal area used for analysis. Soil using a soil auger, air-dried stored sterile well-labeled polythene bag. The bottles (2L) labeled. After digesti...

The effect of aquacultural practices on the bottom sediment quality six selected earthen fishponds in Ife North Local Government Area Osun State was investigated for a period two years. were grouped with regard to fertilization practice and water flowage regime into three sets comprising fertilized non-flow-through ponds (FNF); flow-through (FF) unfertilized (NFF). parameters include color text...

The effects of bamboo poles as substrate for periphyton development on the growth and production of the African catfish, Clarias gariepinus, was evaluated over a period of 90 days. Three treatments, namely manure application as control (C), control and substrate installation (C + S) and, control and substrate with supplementary feeding (C + S + F) were randomly allotted to six earthen ponds eac...

In this paper a parametric study was undertaken to quantify the sensitivity Abstract to a wide range of coastal detention pond systems dealing with tidal influence to store surface flood water so as to produce general guidance on the importance of the catchment and pond variables. In this process a specified pond design return period was selected for which the system was to be designed. The pon...

The recycling processes of aquaponic waste into fertilizers are highly dependent on the type and activity nitrifying bacteria in system. This study aims to find indigenous nitrifiers enhance nutrient recovery an aquaponics Twelve consisting ammonia nitrite-degrading were isolated from a local earthen pond Nile tilapia (Oreochromis niloticus), two isolates (AQ4 AQ12) selected due their highest c...