Abstract
To evaluate the toxicity of fish captured with Tephrosia Vogelii (TV), an ichtyotoxic plant, the Wistar albino rats were fed with the flour of tilapias Sarotherodon melanotheron poisoned with TV leaves powder. This study aimed to evaluate the poisonous effects of TV on various organs of rats, especially the liver and kidney. Three groups of Wistar rats were constituted and fed for 28 days. Histological sections were done on the liver and kidneys. Plasmatic levels of alanine aminotransaminase (ALAT) and aspartate aminotransaminase (ASAT) were measured. The histological sections carried out on their organs presented no lesions. However, the biochemical parameters, ALAT and ASAT showed a slight change. This study shows that the ingestion of fish poisoned with T. vogelii does not provoke any digestive lesion in Wistar rats, but the slight changes in biochemical parameters makes it foreseeable to prohibit fishing with T. vogelii and to prevent their consumption by humans. Key words: Tephrosia vogelii, ichtyotoxic, Wistar rat.
Highlights
To evaluate the toxicity of fish captured with Tephrosia Vogelii (TV), an ichtyotoxic plant, the Wistar albino rats were fed with the flour of tilapias Sarotherodon melanotheron poisoned with TV leaves powder
This study shows that the ingestion of fish poisoned with T. vogelii does not provoke any digestive lesion in Wistar rats, but the slight changes in biochemical parameters makes it foreseeable to prohibit fishing with T. vogelii and to prevent their consumption by humans
At day 0, there was no significant difference at 5% threshold between the various groups with regard to the plasmatic level of the alanine aminotransaminase (ALAT)
Summary
There are 90,000 tons of fish used for this purpose in Benin per year (DP, 2011). Fishing contributes to 3% of the National Gross Domestic product (GDP) (Food and Agricultural Organization (FAO), 2008). Because of increasing demography and fish consumption, which is. 9.2 kg per year per capita (ImorouToko, 2011), the demand for halieutics products remains unsatisfied. The use of many prohibited ways for fishing like the powder of Tephrosia vogelii in rivers is a secular practice in Africa and American- Southern areas (Kerharo et al, 1974). It is true that this practice allows for the collection of a large
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