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Larvae of the invasive mosquito Culex quinquefasciatus Say are morphologically similar to those of the native Culex pervigilans Bergroth, yet distinguishing these species can be hampered by morphological variations in Cx. quinquefasciatus. We present detail about the extent of these variations in an urban population of Cx. quinquefasciatus in Auckl...
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Context 1
... main body parts of a Cx. quinquefasciatus larva are presented ( Figure 1). Examples of benchmark images of the distinguishing characters used for identifying Cx. quinquefas- ciatus larvae are provided ( Figure 2) and some examples of exceptions to these traits are illustrated ( Figures 3, 4). ...
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Citations
Background and Objective: The different parts of Albizia anthelmintica tree were utilized historically in treating some human diseases and animals infections. The objective of this study was to determine the toxicity of Albizia anthelmintica leaves and stem bark extracted compounds to some insects. Materials and Methods: The phytochemical screening and physiochemical analysis for leaves and stem bark had been carried out by using standard methods, to study the pharmacological activities of these materials. Results: The findings indicated Albizia anthelmintica leaves powder had significant (p>0.05) against Tribolium castaneum . Organic extracts of Albizia anthelmintica leaves had toxic effect on Culex quinquefasciatus larvae and were effective in reducing the fecundity of Tribolium castaneum adults. The phytochemical screening demonstrated the presence of some secondary metabolites such as; alkaloids, flavonoids, tannins, triterpenes, coumarin, cardia glycosides and saponins. The results indicated high nutrients like crude fibre levels 16.15 and 9.5% are found in leaves and stems-barks, respectively, beside protein level, crude fat level, moisture content, ash content and nitrogen free were present. Minerals like sodium, phosphorus, calcium, potassium and magnesium were showed in two parts. The ethyl acetate extract of Albizia anthelmintica leaves exhibited intermediate activity against some types of bacteria and fungi. The ethanol extract of leaves presented high activity against fungi Candida albicans . Conclusion: Albizia anthelmintica leaves powder and ethanolic extract had high efficiency on reducing number of pest and their ability of laying eggs.
