Acute Toxicity of Tephrosia vogelli on the Early Life Stages of Farmed Clarid (Clarias gariepinus)
Journal Title: Asian Journal of Advances in Agricultural Research - Year 2017, Vol 3, Issue 2
Abstract
The study examined the acute toxicity of Tephrosia vogelii ethanolic extract on early life stages of farmed Clarias gariepinus. 160 fingerlings were divided into four groups using a completely randomized design (CRD) in a factorial layout and were exposed to 25, 50 and 100 mg/L of the extract for 24, 48, 72 and 96 hours, respectively while the control animals were kept without any treatment. The percentage mortality rate and acute – lethal toxicity (LC50) were determined for the different periods of exposure. Results obtained revealed that no mortality was recorded in the control group whereas a significant concentration – dependent increase in mortality was observed in the groups of animals treated with the extract of the plant. More so, duration of exposure also affected the mortality rate, as the highest percentage of mortality was observed in groups of animals exposed to the extract for 96 h. The LC50 for the T. vogelii extract for 96 h exposure was 9.36 mg/L with lower and upper confidence limits of 4.04 and 21.68 mg/L, respectively. Conclusively, the findings of the study suggest that T. vogelii extract has acute toxic effect on early life stages of farmed clarid and as such, its use in fishing should be discouraged.
Authors and Affiliations
P. B. Ekpo, U. U. Uno, E. C. Effiong, S. E. Etta
Keywords
Related Articles
- EP ID EP337322
- DOI 10.9734/AJAAR/2017/37278
- Views 102
- Downloads 0
Weather Variability Influence on Occurrence and Damages of Mononychellus tanajoa Bonder (Acarina: Tetranychidae) on Selected Cassava Varieties in the Lake Zone, Tanzania
A study was conducted in the Lake Zone, the leading cassava producing Zone in Tanzania during the 2015 and 2016 dry seasons. It was aimed at establishing the influence of the weather variables on occurrence and damages c...
Validation of Rapeseed-mustard Varieties/Line in High Land for Development of Rapeseed/ Mustard-Fallow-T. Aman Pattern of Sylhet in Bangladesh
Aims: To select high yielding variety(s) of rapeseed-mustard suitable for cultivation in the high land areas under partially irrigated conditions after harvest of T. Aman rice. Study Design: Split plot. Place and Duratio...
Clinical Mastitis Caused by Methicillin-resistant Staphylococcus aureus in a Heifer
Emergence of methicillin-resistant Staphylococcus aureus among bovine mastitis is the major cause of frequent therapeutic failure and a cause of concern for veterinary practitioners. The current study describes a case of...
The Use of Fermented Cassava (Manihot esculenta) and Ripe Plantain Peels (Musa paradisiaca) as Feed: Effects on Haematological and Histological Parameters of Albino Rats
Aims: The effects of fermentation of cassava and ripe plantain peels as feed in-vivo on the haematological indices and histological profile of albino rats. Study Design: The diet was formulated from fermented and raw ca...
Effects of Post-harvest Storage and Moist Heat Treatment on Carotenoids and Micronutrients in African Spinach (Amaranthus hybridus)
The aim of this research was to investigate the nutrient composition of Amaranthus hybridus (raw,stored and as consumed) and evaluate its potentials for alleviating hidden hunger. Changes in carotenoids, selected vitamin...