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Body size and sperm quality in queen‐ and worker‐produced ant males
Journal of Evolutionary Biology ( IF 2.1 ) Pub Date : 2020-03-24 , DOI: 10.1111/jeb.13616
Julia Giehr 1 , Jennifer Wallner 1 , Theresa Krüger 1 , Jürgen Heinze 1
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Workers of many species of social Hymenoptera have functional ovaries and are capable of laying haploid, unfertilized eggs, at least in the absence of a queen. Except for honeybees, it remains largely unknown whether worker‐produced males have the same quality as queen‐produced males and whether workers benefit in direct fitness by producing their sons. Previous studies in the monogynous ant Temnothorax crassispinus revealed that a high proportion of males in natural and laboratory colonies are worker offspring. Here, we compare longevity, body size, sperm length and sperm viability between queen‐ and worker‐produced males. We either split queenright colonies into queenright and queenless halves or removed the queen from a fraction of the queenright colonies and then examined the newly produced males. Male quality traits varied considerably among colonies but differed only slightly between queen‐ and worker‐produced males. Worker‐produced males outnumbered queen‐produced males and also had a longer lifespan, but under certain rearing conditions sperm from queen‐produced males had a higher viability.

中文翻译:

蚁后和工蚁雄性的体型和精子质量

许多社会膜翅目物种的工蚁都有功能性卵巢,能够产下单倍体、未受精的卵,至少在没有蜂王的情况下是这样。除了蜜蜂之外,工蜂产生的雄性是否与蜂后产生的雄性具有相同的品质,以及工蜂是否通过生产它们的儿子而直接受益于健康,在很大程度上仍然未知。先前对一夫一妻制蚂蚁 Temnothorax crassispinus 的研究表明,自然和实验室群体中很大一部分雄性是工蚁后代。在这里,我们比较了蜂王和工蜂生产的雄性之间的寿命、体型、精子长度和精子活力。我们要么将 Queenright 殖民地分为 Queenright 和 Queenless 两半,要么从部分 Queenright 殖民地中移除女王,然后检查新产生的雄性。雄性品质特征在群体之间差异很大,但在蜂王和工蜂产生的雄性之间仅略有不同。工蜂产生的雄性数量多于蜂后产生的雄性,寿命也更长,但在某些饲养条件下,蜂后产生的雄性的精子活力更高。
更新日期:2020-03-24
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