Photosynthesis modulates the plant feeding of Phlebotomus papatasi (Diptera: Psychodidae).
Photosynthesis modulates the plant feeding of Phlebotomus papatasi (Diptera: Psychodidae).
复制标题
光合作用调节 Phlebotomus papatasi（双翅目：Psychodidae）的植物摄食。
DOI：
10.1093/jmedent/37.3.319
复制
发表时间：
2000
影响因子：
2.1
通讯作者：
Jacobson,RL
中科院分区：
文献类型：
--
作者：
Schlein,Y;Jacobson,RL
帕帕塔西白蛉（Scopoli）是大型利什曼原虫（Yakimoff & Schokhor）的媒介，以约旦河谷沙漠栖息地的植物为食。在干燥的夏季结束时，沙蝇的寿命很短，肠道中的糖含量也很小。在这个季节，植物处于高温和脱水的压力下。这种压力阻止了光合作用，并减少了主要终产物蔗糖和淀粉的量。我们推测，沙蝇植物组织饮食中糖的缺乏是由于光合作用的停滞。为了验证这一假设，我们比较了沙蝇在刺山柑树枝上的取食。在黑暗中保持24小时，并在正常光合作用一天后切下的树枝上。在黑暗中，树枝失去了一半以上的糖分。45.2%的雌性白蛉和14.3%的雄性白蛉在夜间取食。81.0%的雌蝇和38.7%的雄蝇在自然条件下的树枝上取食，且取食后的果蝇体重明显增加。室内实验还表明，植物组织粉P。木瓜淀粉通常包括淀粉粒。这种颗粒也发现在50%的现场捕获的男性和女性。植物组织的营养潜力表现为33天的中位存活率P。在freshC.刺枝和水。
Phlebotomus papatasi(Scopoli), the vector ofLeishmania major(Yakimoff & Schokhor), feeds on plants in desert habitats in the Jordan Valley. At the end of the dry summer, the life span of sand flies is short and the amount of sugars in their guts is small. In this season the plants are under the stress of heat and dehydration. This stress arrests the photosynthesis and decreases the amounts of the main end products, sucrose and starch. We presumed that the paucity of sugars in the sand fly plant tissue diet resulted from the arrest of photosynthesis. To test this assumption, we compared the feeding of sand flies on branches ofCapparis spinosa(L.) that had been kept for 24 h in darkness and on branches cut after a normal day of photosynthesis. In darkness, the branches had lost more than half of their sugar content. Afterward they were fed upon overnight by 45.2% of female and 14.3% of male sand flies. A higher proportion of 81.0% females and 38.7% males fed on branches from natural conditions and these fed flies were significantly heavier. Laboratory experiments also showed that plant tissue meals ofP. papatasioften include starch grains. Such grains were found also in 50% of field-caught males and females. The nutritive potential of plant tissues was demonstrated by the 33-d median survival ofP. papatasiseries that had been maintained on freshC. spinosabranches and water.