Abstract: Thirty - seven species of cetacean are recorded from southern African waters. Four thousand, five hundred and thirty - seven records of approximately 60 000 cetaceans were analysed to defme distribution patterns of these species, including dedicated sightings (both scientific and commercial), incidental sightings, commercial catches and specimens. Records of dedicated scientific sightings and incidental sightings were analysed by water depth, sea surface temperature and salinity an...
Abstract: No abstract available
Abstract: Killer whales are the oceans’ apex predator and are known to have important effects on ecosystems. At Subantarctic Marion Island, southern Indian Ocean, they have only been studied opportunistically, resulting in limited knowledge of their ecosystem impact here. This dissertation describes the prey and seasonal abundance, estimates the population size and assesses the predatory impact of killer whales on seals and penguins at Marion Island, using dedicated and opportunistic shore...
ABSTRACT A cross sectional study was undertaken from November 2016 to April 2017 to find out whether Edwardsiella infections exist in farmed fish in Morogoro. The prevalence of infection, risk factors and fish haematological parameters were established. A total of 270 fish were sampled from 24 ponds. Each fish was clinically examined and aseptically swabs of kidney, liver and spleen and pond water were collected for bacteriology. Bacteria were cultured onto Tryptic soya agar and Salmonella-S...
Aquaculture has a great potential for growth in Kenya. There has been need for the government to promote fish culture to attain sustainable development goals of zero hunger. The study aims at investigating factors influencing sustainable development of fresh water Aquaculture in Kenya A case of Vihiga County. The objectives of the study are investigate how Production factors, and Extension influence sustainable development of freshwater aquaculture .Descriptive research design was used. The ...
ABSTRACT The impact of Nypa fruticans (Wurmb) and mangroves on the plankton and benthic communities of Andoni river was carried out between January and August, 2017. Four stations were chosen based on Nypa palm and native mangrove species’ presence and absence. Water quality parameters include; pH 6.99±0.16, Temperature 28.20±0.050C, D.O 4.71±0.18mg/L, Conductivity 19.52±0.20µm/s, Salinity 10.76±0.07ppt, TDS 13.45±0.27ppt. Mean values of the physico-chemical parameters (p
Agricultural products were among the primary export commodities together with petroleum products during the pre-independence era which made the Nigerian economy fairly stable then, contributing about 95% of the total Gross Domestic Product (GDP). After independence, there has been a steady and consistent decline in the value of agricultural products such that as at year 2002, it was estimated to be 32% of the nation’s GDP (Gross Domestic Product) which shows that economic growth in Nigeria ...
ABSTRACT This project work was carried out to determine the Effects of Dietary Supplementation of Eucalyptus globulus leaves in the diet of Heterobranchus bidorsalis Fingerlings. Growth and nutrient utilization was studied for 70 days in 50 liters rectangular plastic tanks. Tanks were grouped into five (5) treatments in triplicates (ControlR1-3), (EG1R1-3), (EG2R1-3), (EG3R1-3) and (EG4R1-3). One hundred and fifty (150) fingerlings of Heterobranchus bidorsalis used were randomly distributed ...
ABSTRACT Physical water quality parameters were conducted to assess raised fish pond waters in South Eastern Kenya University in relation to their potential for catfish culture uses. Water conductivity, TDS, salinity DO and temperature were monitored for a time period of two months in relation to feeding and growth of Clarias gariepinus. The physical water quality parameters results revealed a rising trend behavior thought the study. The result revealed that the physical water quality variab...