Urine from the buffalo, Syncerus coffer, a natural host of the tsetse, has been shown previously to be a potent olfactory attractant for tsetse in the field. The attractant compounds have been found to be extractable into dichloromethane. Fractionation of the extracts by liquid flash chromatography yielded four fractions one of which gave a seven-fold increase in trap catches in the field compared to the control traps. Gas chromatographic and gas chromatography-mass spectrometric analysis of this fraction revealed the presence of seven simple phenols including phenol itself.Resume-L'urine de buffle, Syncerus coffer, un hote naturel de mouche tse-tse, s'est recement montre d'etre un attracteur potentiel d'olfaction pour la mouche tse-tse sur le terrain. Les composes de cet attracteur ont ete trouves extractable dans le dichloromethane. Le fractionnement de ces extraits par le liquide chromatographique a donne quatre fractions dont l'une d'elles, placee dans les pieges de capture a permis de recolter sept fois plus de mouches que les pieges-controles. L'analyse de cette fraction par gaz chromatographique et par gaz chromatographique associe a la masse spectrometrique a revele la presence de sept phenols simple comprenant le phenol lui-meme.
Seven phenolic compounds (phenol, 3-and 4-cresols, 3-and 4-ethylphenols, and 3-and 4-n-propylphenols) previously shown to be components of a fraction of an extract of buffalo urine which was active as a tsetse attractant, were evaluated in field experiments, individually at different concentrations, and in blends. The results indicate that 4-cresol and 3-n-propylphenol are the most important components for the of the attractancy phenolic mixture.
Resume-Septcomposes phenoliques (phenol, 3-et 4-cresols, 3-et 4-ethylphenols ainsique 3-et 4-n-propylphenols) demotres etre les composantes d'une fraction de 1'urine de buffle qui est un attractant des mouches tse-tse, ont ete teste individuellement a differentes concentrations et en groupes sur le terrain. Les resultats obtenus indiquent que 4-cresol et 3-n-propylphenol sont les plus importantes composantes de ce melange phenolique pour 1 attraction.
SummaryFood habit studies on wildebeest (Connochaetes taurinus Burchell) and plains zebra (Equus burchelli Gray), using stomach contents analysis, were carried out between April 1972 and October 1973 in the Athi‐Kaputei plains and Nguruman in Kajiado district. Both areas fall within the semi‐arid region of Kenya and are grazed by both Masai stock and wildlife.Wildebeest was highly selective for grass leaves, while zebra took more of the coarse plant materials, viz. sheath and stem. Zebra is more suited to coarse feeding, which enables it to survive the droughts better than wildebeest. The latter is usually hit harder at such times, as it cannot maintain itself on the fibrous materials which can constitute a maintenance diet for zebra.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.