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首页> 外文期刊>Journal of genetics >Male-biased recombination in odonates: Insights from a linkage map of the damselfly Ischnura elegans
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Male-biased recombination in odonates: Insights from a linkage map of the damselfly Ischnura elegans

机译：卵酸盐中雄性偏置的重组：来自豆娘Ischnura elegans连锁图的见解

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Odonata (dragonflies and damselflies) represent the most ancient insect branch and have received much attention in the evolutionary and ecological research. However, few genomic resources are available and no genetic maps or genome assemblies have been developed. We present recom-bination rates and a first-generation linkage map of the blue-tailed damselfly Ischnura elegans. Using a pedigree, 19 microsatellite markers were genotyped, resulting in four linkage groups with a total length of 212 cM. Interestingly, hemigametic males (332 cM) had a moderately larger linkage map than homogametic females, (179 cM), suggesting that recombination in damselflies is heterochiasmatic. This contrasts with the situation in some more modern insect orders such as some Diptera and Lepidoptera, where the heterogametic sex is achiasmatic, or in some Orthoptera, where females have higher recombination rates. Apart from providing insights into insect recombination patterns, this linkage map forms a valuable genetic resource for future research in Odonata.
机译：蜻蜓（蜻蜓和豆娘）代表着最古老的昆虫分支，在进化和生态学研究中受到了广泛的关注。但是，几乎没有可用的基因组资源，还没有开发出遗传图谱或基因组组装体。我们提出了重组率和蓝尾豆娘Ischnura elegans的第一代连锁图谱。使用家谱，对19个微卫星标记进行了基因分型，产生了四个连锁组，总长度为212 cM。有趣的是，与拟配子雌性（179 cM）相比，具有拟雄性的雄性（332 cM）具有适度更大的连锁图，这表明在豆娘中的重组是杂散性的。这与一些更现代的昆虫种群形成对比，例如一些双翅类和鳞翅目，其中异配子性是不满足性的，或者在某些直翅目中，雌性具有较高的重组率。除了提供有关昆虫重组模式的见解之外，这种连锁图还为将来在Odonata的研究提供了宝贵的遗传资源。

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