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Domestication-related changes in sexual performance of Queensland fruit fly
Insect Science ( IF 2.9 ) Pub Date : 2020-09-23 , DOI: 10.1111/1744-7917.12873 Jeanneth Pérez 1, 2 , Vivian Mendez 1, 2 , Boaz Yuval 3 , Phillip W Taylor 1, 2
Insect Science ( IF 2.9 ) Pub Date : 2020-09-23 , DOI: 10.1111/1744-7917.12873 Jeanneth Pérez 1, 2 , Vivian Mendez 1, 2 , Boaz Yuval 3 , Phillip W Taylor 1, 2
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In Sterile Insect Technique (SIT) programs, massive numbers of insects are reared, sterilized, and released in the field to impede reproduction of pest populations. The domestication and rearing processes used to produce insects for SIT programs may have significant evolutionary impacts on life history and reproductive biology. We assessed the effects of domestication on sexual performance of laboratory reared Queensland fruit fly, Bactrocera tryoni, by comparing an old (49 generations) and a young colony (5 generations). We evaluated mating propensity, mating latency, copula duration, sperm transfer, and ability to induce sexual inhibition in mates. Overall, both males and females from the old colony had greater mating propensity than those from the young colony. Copula duration was longer when females were from the old colony. There was no evidence of sexual isolation between the colonies as males and females from the two colonies had similar propensity to mate with flies from either colony. Males from the old colony transferred more sperm regardless of which colony their mate was from. Finally, males from both colonies were similarly able to induce sexual inhibition in their mates and were also similarly able to secure copulations with already-mated females. Positive effects of domestication on sperm transfer, coupled with maintained ability to induce sexual inhibition in mates and to secure copulations with previously mated females, highlights that domestication may have little effect, or even positive effects, on some aspects of sexual performance that may advantage mass-reared B. tryoni in SIT programs.
中文翻译：
昆士兰果蝇性能力的驯化相关变化
在昆虫不育技术 (SIT) 计划中，大量昆虫在田间饲养、消毒和释放，以阻止害虫种群的繁殖。用于为 SIT 计划生产昆虫的驯化和饲养过程可能对生活史和生殖生物学产生重大的进化影响。我们评估了驯化对实验室饲养的昆士兰果蝇Bactrocera tryoni性表现的影响，通过比较一个老的（49 代）和一个年轻的群体（5 代）。我们评估了交配倾向、交配潜伏期、copula 持续时间、精子转移和诱导配偶性抑制的能力。总体而言，旧群体的雄性和雌性都比年轻群体的雄性和雌性具有更大的交配倾向。当雌性来自旧殖民地时，Copula 持续时间更长。没有证据表明殖民地之间存在性隔离，因为来自两个殖民地的雄性和雌性与来自任何一个殖民地的苍蝇交配的倾向相似。不管他们的配偶来自哪个群体，来自旧群体的雄性都会转移更多的精子。最后，来自两个殖民地的雄性同样能够在它们的配偶中诱导性抑制，并且同样能够确保与已经交配的雌性交配。B. tryoni在 SIT 程序中。
更新日期：2020-09-23
中文翻译：
昆士兰果蝇性能力的驯化相关变化
在昆虫不育技术 (SIT) 计划中，大量昆虫在田间饲养、消毒和释放，以阻止害虫种群的繁殖。用于为 SIT 计划生产昆虫的驯化和饲养过程可能对生活史和生殖生物学产生重大的进化影响。我们评估了驯化对实验室饲养的昆士兰果蝇Bactrocera tryoni性表现的影响，通过比较一个老的（49 代）和一个年轻的群体（5 代）。我们评估了交配倾向、交配潜伏期、copula 持续时间、精子转移和诱导配偶性抑制的能力。总体而言，旧群体的雄性和雌性都比年轻群体的雄性和雌性具有更大的交配倾向。当雌性来自旧殖民地时，Copula 持续时间更长。没有证据表明殖民地之间存在性隔离，因为来自两个殖民地的雄性和雌性与来自任何一个殖民地的苍蝇交配的倾向相似。不管他们的配偶来自哪个群体，来自旧群体的雄性都会转移更多的精子。最后，来自两个殖民地的雄性同样能够在它们的配偶中诱导性抑制，并且同样能够确保与已经交配的雌性交配。B. tryoni在 SIT 程序中。
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