Levi Tal, Ben-Dov Eitan, Shahi Preeti, Borovsky Dov, Zaritsky Arieh
Department of Life Sciences, Ben-Gurion University of the Negev, POB 653, Be'er-Sheva 84105, Israel.
Achva Academic College, MP Shikmim 79800, Israel.
Acta Trop. 2014 May;133:42-4. doi: 10.1016/j.actatropica.2014.02.001. Epub 2014 Feb 10.
Mosquitoes have a complex life-cycle with dramatic changes in shape, function, and habitat. Aedes aegypti was studied by growing individual larvae at different concentrations of a defined rich food source. At higher food concentrations, rate of larval growth was faster, but the time required for 4th instar larvae to molt into the pupal stage was unexpectedly extended. These opposite tendencies resulted in constant times from hatching to pupation and up to adult eclosion at permissive food concentrations. The results demonstrate that nutritional conditions of 4th instar larvae impact initiation of the first metamorphic molt.
蚊子具有复杂的生命周期，在形态、功能和栖息地方面有显著变化。通过在不同浓度的特定丰富食物源中培养单个埃及伊蚊幼虫进行研究。在较高食物浓度下，幼虫生长速度更快，但四龄幼虫蜕皮进入蛹期所需的时间意外延长。这些相反的趋势导致在适宜的食物浓度下，从孵化到化蛹以及直至成虫羽化的时间保持恒定。结果表明，四龄幼虫的营养状况会影响首次变态蜕皮的起始。
