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首页> 外文期刊>Polar biology >The first genome size estimates for six species of krill(Malacostraca, Euphausiidae): large genomes at the north and south poles
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The first genome size estimates for six species of krill(Malacostraca, Euphausiidae): large genomes at the north and south poles

机译：首次对六种磷虾（Malacostraca，Euphausiidae）的基因组大小进行了估算：北极和南极的大型基因组

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摘要

Krill (family Euphausiidae) represent some of the most abundant organisms in the both northern and southern oceanic environments and provide food for vari-ous animals including humans. Despite their importance, little is known about krill from a genomic standpoint, even with regard to basic properties such as total genome size. This study provides genome size estimates for six species of krill from both the North Atlantic and Southern Oceans which are the first such estimates for any species of euphausiid. Genome size estimates were obtained using both flow cytometry and Feulgen image analysis densi-tometry with chicken and trout blood as internal standards. Haploid genome sizes ranged from 12.77 to 48.53 pg, providing roughly fourfold variation within these six spe-cies alone. With such large estimates, sequencing of a krill genome will currently be costly and laborious, but further studies should be conducted to determine the composition of these exceptionally large genomes.
机译：磷虾（Euphausiidae家族）代表着北部和南部海洋环境中一些最丰富的生物，为包括人类在内的各种动物提供食物。尽管磷虾很重要，但从基因组的角度来看，磷虾知之甚少，即使在诸如基本基因组大小之类的基本特性方面也是如此。这项研究提供了来自北大西洋和南大洋的六种磷虾物种的基因组大小估计，这是所有虾形up的首次估计。使用流式细胞仪和Feulgen图像分析光密度法（以鸡和鳟鱼血为内标）获得基因组大小估计值。单倍体基因组大小范围从12.77 pg至48.53 pg，仅在这六个方面就提供了大约四倍的变异。有了如此大的估计，目前磷虾基因组的测序将是昂贵且费力的，但是应该进行进一步的研究以确定这些异常大的基因组的组成。

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