Cook R, Cook A
Anim Behav. 1975 Aug;23(3):521-6. doi: 10.1016/0003-3472(75)90129-3.
Decapitated females were used to examine the attractiveness to males (duration of courtship elicited) of female Drosophila melanogaster. Decapitated females show but few behavioural responses. The attractiveness of virgin females varied with age, being at a maximum on the day of eclosion, and declining thereafter. Even though decapitated inseminated females do not extrude their genitalia they received less courtship than decapitated virgin females. In protein-fed inseminated females attractiveness to males returned in parallel with sexual receptivity. A sucrose diet rendered both virgin and inseminated decapitated females more attractive to males, but did not prevent the change in attractiveness due to mating. The ejaculate and ovarian activation are suggested as causal factors in these processes.
断头雌蝇被用于研究雄性果蝇对黑腹果蝇雌蝇的吸引力（引发求偶行为的持续时间）。断头雌蝇表现出的行为反应很少。未交配雌蝇的吸引力随年龄变化，羽化当天吸引力最大，之后逐渐下降。即使断头的已交配雌蝇不伸出生殖器，它们受到的求偶也比断头的未交配雌蝇少。在喂食蛋白质的已交配雌蝇中，对雄性的吸引力与性接受能力同步恢复。蔗糖饮食使断头的未交配和已交配雌蝇对雄性更具吸引力，但并未阻止交配导致的吸引力变化。射精和卵巢激活被认为是这些过程中的因果因素。
