Medfly populations differ in diel and age patterns of sexual signalling
Medfly populations differ in diel and age patterns of sexual signalling
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DOI：
10.1111/j.1570-7458.2008.00730.x
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发表时间：
2008-09-01
影响因子：
1.9
通讯作者：
Carey, James R.
中科院分区：
文献类型：
--
作者：
Diamantidis, Alexandros D.;Papadopoulos, Nikos T.;Carey, James R.
昆虫种群可能在几个生活史特征上有所不同，包括行为特征，如性信号。我们测试了男性地中海果蝇（medlfy），Ceratitis capitata（Wiedemann）（双翅目：实蝇科），从地理上孤立的地区获得的人口表现出男性性信号的定量和定性方面的差异。在相同的实验室条件下（25摄氏度，60%相对湿度，和L14：D10）。这四个种群在实验室中饲养了一代。在喂食两种饮食（酵母水解产物加糖或仅糖）之一的F-1后代中研究了性信号。在这两种饮食中，四个种群在成熟的进展（由表现出性信号的男性的平均数量表示）和达到成熟后的信号量方面存在显着差异。酵母的可用性显着增加性信号，但是，它有不同的影响，在不同的人群中的信号的数量。记录了所有人群和饮食的性信号的双峰模式，其中一个峰值在大约08：00-09：00，第二个峰值在大约13：00-14：00。然而，在一天的“性活跃”期间，人群之间的数量差异导致了性信号的日常模式的显着差异。这些发现对于了解地理隔离的地中海实蝇种群对不同生态系统的适应性具有重要意义，同时也为昆虫不育技术在防治地中海实蝇中的应用提供了参考。Capitata，讨论。
Insect populations may differ in several life history traits, including behavioural ones such as sexual signalling. We tested whether male Mediterranean fruit fly (medlfy), Ceratitis capitata (Wiedemann) (Diptera: Tephritidae), populations obtained from geographically isolated areas exhibit differences in quantitative and qualitative aspects of male sexual signalling. Male sexual signalling was studied in four medfly populations (originating from Brazil, Portugal, Kenya, and Greece) under identical laboratory conditions (25 degrees C, 60% r.h., and L14:D10). The four populations had been reared for one generation in the laboratory. Sexual signalling was studied in the F-1 progeny that were fed one of two diets (yeast hydrolysate plus sugar or sugar only). On both diets, the four populations differed significantly in the progress of maturity (indicated by the average number of males exhibiting sexual signalling) and in the quantity of signalling after attaining maturity. Yeast availability significantly increased sexual signalling; however, it had a different impact on the quantity of signalling in the different populations. A bi-modal pattern of sexual signalling, with one peak at approximately 08:00-09:00 hours and the second at approximately 13:00-14:00 hours, was recorded for all populations and diets. However, quantitative differences among the populations within the 'sexually active' period of the day resulted in significant differences in the daily pattern of sexual signalling. The significance of these findings for understanding adaptations of geographically isolated medfly populations to different ecosystems, as well as its practical importance for the application of the sterile insect technique against C. capitata, is discussed.