Pheromonal Cues Deposited by Mated Females Convey Social Information about Egg-Laying Sites in Drosophila Melanogaster
Pheromonal Cues Deposited by Mated Females Convey Social Information about Egg-Laying Sites in Drosophila Melanogaster
复制标题
DOI：
10.1007/s10886-016-0681-3
复制
发表时间：
2016-03-01
影响因子：
2.3
通讯作者：
Billeter, Jean-Christophe
中科院分区：
文献类型：
--
作者：
Dumenil, Claire;Woud, David;Billeter, Jean-Christophe
个人可以根据从他人那里学到的信息做出选择，这种现象称为社会学习。然而，观察者如何区分他们应该或不应该向哪个人学习，却知之甚少。在这里，我们表明，果蝇雌性可以影响其他女性通过信息素标记产卵地点的选择。交配后的雌性通过排出含有聚集信息素顺式-11-乙烯基乙酸酯（cVA）的剩余雄性精子来标记高质量食物的领地，此外，存款几种性别和物种特异性表皮烃（CHC）信息素。这些信息素线索会影响其他雌性的选择，它们的反应是优先在有标记的食物上产卵。这个系统对繁殖者和反应者都有好处，因为公共产卵增加了后代的存活率。处女的女性，但是，不引起交配女性的产卵决定的变化，即使食物中补充了从交配女性射出的精子，从而表明需要额外的线索。雌性CHC信息素或其配偶CHC信息素的遗传消除导致交配雌性吸引其他雌性的能力丧失。我们的结论是，交配的女性使用的信息素标记系统，包括从男性射精获得的cVA与性别和物种特异性的CHCs由两个队友，以指示产卵地点。该系统确保信息的可靠性，因为交配，但不是处女，女性都有能力产生的信息素混合物，吸引其他苍蝇到这些网站和产卵网站质量的直接利益。
Individuals can make choices based on information learned from others, a phenomenon called social learning. How observers differentiate between which individual they should or should not learn from is, however, poorly understood. Here, we showed that Drosophila melanogaster females can influence the choice of egg-laying site of other females through pheromonal marking. Mated females mark territories of high quality food by ejecting surplus male sperm containing the aggregation pheromone cis-11-vaccenyl acetate (cVA) and, in addition, deposit several sex- and species-specific cuticular hydrocarbon (CHC) pheromones. These pheromonal cues affect the choices of other females, which respond by preferentially laying eggs on the marked food. This system benefits both senders and responders, as communal egg laying increases offspring survival. Virgin females, however, do not elicit a change in the egg-laying decision of mated females, even when food has been supplemented with ejected sperm from mated females, thus indicating the necessity for additional cues. Genetic ablation of either a female's CHC pheromones or those of their mate results in loss of ability of mated females to attract other females. We conclude that mated females use a pheromonal marking system, comprising cVA acquired from male ejaculate with sex- and species-specific CHCs produced by both mates, to indicate egg-laying sites. This system ensures information reliability because mated, but not virgin, females have both the ability to generate the pheromone blend that attracts other flies to those sites and a direct interest in egg-laying site quality.