QUANTITATIVE-ANALYSIS OF MATING-BEHAVIOR IN AGING MALE DROSOPHILA-MELANOGASTER
QUANTITATIVE-ANALYSIS OF MATING-BEHAVIOR IN AGING MALE DROSOPHILA-MELANOGASTER
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DOI：
10.1016/0047-6374(79)90037-x
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发表时间：
1979-01-01
影响因子：
5.3
通讯作者：
KESSLER, S
中科院分区：
文献类型：
--
作者：
ECONOMOS, AC;MIQUEL, J;KESSLER, S
通过对单独研究的 28 只俄勒冈州 R 品系雄性果蝇的观察和测量，确定了雄性果蝇的交配行为随着其生命的展开，从羽化到成熟（性能巅峰）和生理死亡（失去生育能力，随后完全丧失交配能力）到实际死亡的动态变化。从想象生命的第一天到自然死亡，每只果蝇每周都有机会在 1 小时内与最多 3 只处女雌性交配。记录每次完成交配的潜伏期长度和交配持续时间。交配后，让雌性产卵24小时，并在26天后计算后代的数量。 1-4周龄期间的特点是表现高峰且相当稳定：多次交配、潜伏期短、交配持续时间长和高生育力（后代数量）；然后，随着果蝇年龄的增长，下降开始，在某些方面比其他方面慢。研究发现，个体内和个体间存在很大的差异，这掩盖了个体交配能力与寿命长度之间可能存在的相关性。在个体层面，初步分析显示寿命与最后一次交配周（阳痿开始）或最后一次可育交配周（开始不育）之间存在良好的相关性（r = 0.80 和 0.79）。在人口层面，许多指标，即每个年龄的剩余母体数量、剩余可育母体数量和交配总数，其年龄过程与存活率相似，但预计为 4-6 周。其他指标，例如多次交配的数量和后代的数量，随着年龄的增长而下降的速度快于存活率。
Dynamic changes in quantitative aspects of mating behavior of the male fruit fly as its life unfolds, from eclosion through maturity (peak performance) and physiological death (loss of fertility followed by complete loss of ability to mate), towards actual death, were identified by observations and measurements on 28 male fruit flies of the Oregon R strain studied individually. At weekly sessions from the 1st day of the imaginal life until their natural death, each fly was given the opportunity to mate with up to 3 virgin females during a 1-h period. Length of the latency period of each accomplished mating and duration of copulation were recorded. After mating the females were allowed to lay eggs for 24 h and the number of offspring was counted 26 days later. The period between 1-4 wk of age is characterized by peak and fairly constant performance: multiple matings, short latencies, long durations of copulation and high degree of fertility (number of offspring); then a decline sets in, in some measures slower than in others, as the flies age. Large intra- and inter-individual variabilities were found which obscure possible correlations between individual measures of mating ability and length of life. At the individual level, a preliminary analysis showed a good correlation (r = 0.80 and 0.79) between life span and week of last mating (onset of impotence) or week of last fertile mating (onset of sterility). At the population level a number of measures, i.e., number of remaining maters at each age, number of remaining fertile maters and total number of matings, had an age-course similar to survivorship but anticipated it by 4-6 wk. Other measures, such as number of multiple matings and number of offspring declined with age faster than survivorship.