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Male age affects female mating preference but not fitness in the monandrous moth Dendrolimus punctatus Walker (Lepidoptera: Lasiocampidae)
Physiological Entomology ( IF 1.5 ) Pub Date : 2019-11-05 , DOI: 10.1111/phen.12312
Meng Lai 1, 2 , Shi‐Yu Zhang 1, 2 , Yan‐Fang Zhang 1, 2 , Xing‐Ping Liu 1, 2
Affiliation  

It is widely accepted that male age can influence female mating preference and subsequent fitness consequences in many polyandrous species, yet this is seldom investigated in monandrous species. In the present study, we use the monandrous pine moth Dendrolimus punctatus to examine the effects of male age on female mating preference and future reproductive potential. In multiple male trials, when permitted free mating from an aggregation consisting of virgin males aged 0 (young), 2 (middle‐aged) and 4 (old) days, virgin females preferentially mate with young and middle‐aged males, although mating latency and mating duration are independent of male age. In single male trials, when virgin females are randomly assigned single virgin males of known age, a negative correlation is found between mating success and male age in this species. However, we find that male age also has no effect on mating latency and mating duration. Further fitness analysis reveals that females do not receive benefits in terms of oviposition period, total egg production, average daily egg production, percentage of egg hatching, longevity, expected reproduction and relative expected reproduction from mating with young and middle‐aged males compared with mating with old males. The results of the present study are the first demonstrate that females mated preferentially with younger males but gain no apparent fitness benefits in a monandrous moth species.

中文翻译:

雄性年龄影响雌性交配偏好,但不影响单蠹蛾 Dendrolimus punctatus Walker(鳞翅目:Lasiocampidae)的适应度

人们普遍认为,雄性年龄会影响许多一妻多夫物种的雌性交配偏好和随后的健康后果,但很少对一夫多妻物种进行调查。在本研究中,我们使用单枝松蛾 Dendrolimus punctatus 来检查雄性年龄对雌性交配偏好和未来生殖潜力的影响。在多项雄性试验中,当允许从 0(年轻)、2(中年)和 4(旧)天的处女雄性组成的集合中自由交配时,处女雌性优先与年轻和中年雄性交配,尽管交配潜伏期和交配时间与雄性年龄无关。在单雄性试验中,当处女雌性被随机分配到已知年龄的单一处女雄性时,发现该物种的交配成功与雄性年龄之间存在负相关。然而,我们发现雄性年龄对交配潜伏期和交配持续时间也没有影响。进一步的适应度分析表明,与交配相比,雌性在产卵期、总产蛋量、平均日产蛋量、孵化率、寿命、预期繁殖和相对预期繁殖方面与中青年雄性交配没有获益与老男性。本研究的结果首次证明雌性优先与年轻的雄性交配,但在单一蛾类中没有明显的健康益处。与中青年雄性交配与老年雄性交配的预期繁殖和相对预期繁殖。本研究的结果首次证明雌性优先与年轻的雄性交配,但在单一蛾类中没有明显的健康益处。与中青年雄性交配与老年雄性交配的预期繁殖和相对预期繁殖。本研究的结果首次证明雌性优先与年轻的雄性交配,但在单一蛾类中没有明显的健康益处。
更新日期:2019-11-05
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