The influence of environmental quality on sexual selection in Nauphoeta cinerea (Dictyoptera:Blaberidae)
The influence of environmental quality on sexual selection in Nauphoeta cinerea (Dictyoptera:Blaberidae)
复制标题
DOI：
10.1093/beheco/8.1.46
复制
发表时间：
1997-01-01
影响因子：
2.4
通讯作者：
Moore, AJ
中科院分区：
文献类型：
--
作者：
Clark, DC;DeBano, SJ;Moore, AJ
我们研究了环境条件对蟑螂的性信息素和交配行为的影响。先前对该物种的研究表明，雌性在求偶时的行为反映了雌性的择偶选择，雄性的行为与雄性的社会地位相关，而雄性的性信息素是雌性用来评估雄性的特征。在本研究中，男性和女性被允许从成人出现发展到性成熟，无论是高或低质量的环境。环境影响性信息素组分的含量。我们发现显着减少3-羟基-2-丁酮和4-乙基-2-甲氧基苯酚，但不是2-甲基噻唑烷，在信息素腺体的男性从一个贫穷的环境。信息素的质量也受到影响;涉及2-甲基噻唑烷的比例发生变化，而3-羟基-2-丁酮与4-乙基-2-甲氧基苯酚的比例没有变化。在这些环境条件下性成熟的发展也影响了男性和女性的性行为。男性求偶活动反映了环境的影响，男性从低质量的环境需要更长的时间来启动求偶，并花更多的时间与女性从所有的环境交配。女性对男性质量的评价也受到环境的影响。无论雌性自己的养育环境如何，雌性对来自恶劣环境的雄性的求爱反应都要慢一些。然而，来自低质量环境的雌性也需要更长的时间来回应求爱，并且需要更多的求爱，而不管雄性的养育环境如何。因此，恶劣的环境也增加了女性的挑剔。然而，只有一个显着的交互作用项，这表明环境的影响是普遍的，女性不显示适应性可塑性在择偶。性选择的研究，考虑到可变的环境对行为的影响，以及在其他系统中的性选择形态可能会提供新的见解，这一进化过程。
We examined the impact of environmental conditions on the sex pheromone and mating behavior of the cockroach, Nauphoeta cinerea. Previous research on this species has shown that female behavior during courtship reflects female mate choice, male behavior correlates with male social status, and the male sex pheromone is the character used by females to assess males. In the present study, males and females were allowed to develop from adult emergence to sexual maturity in either a high- or low-quality environment. The environment affected the quantities of sex pheromone components. We found significantly less 3-hydroxy-2-butanone and 4-ethyl-2-methoxyphenol, but not 2-methylthiazolidine, in the pheromone glands of males from a poor environment. Pheromone quality was also affected; the ratios involving 2-methylthiazolidine were altered, while the ratio 3-hydroxy-2-butanone to 4-ethyl-2-methoxyphenol did not change. Development to sexual maturity under these environmental conditions also influenced male and female sexual behavior. Male courtship activity reflected environmental influences; males from the low-quality environment took longer to initiate courtship and spent more time copulating with females from all environments. Male quality, as assessed by females, was also affected by their environment. Females were slower to respond to the courtship of males from the poor environment, regardless of the females' own rearing environments. However, females from the low-quality environment also took longer to respond to the courtship, and required more courtship, regardless of the males' rearing environments. Thus, poor environments also increase female choosiness. However there was only one significant interaction term, suggesting that the environmental effects are general and that females do not show adaptive plasticity in mate choice. Studies of sexual selection that consider the effects of variable environments on behavior as well as the sexually selected morphology in other systems are likely to provide new insights into this evolutionary process.