Mondal Trisha, Dey Prateek, Kumari Divya, Ray Swapna Devi, Quadros Goldin, Sastry Kochiganti Venkata Hanumat, Singh Ram Pratap
Department of Life Science, Central University of South Bihar, Gaya, 824236, India.
Wetland Ecology Division, Sálim Ali Centre for Ornithology and Natural History, Anaikatty, Coimbatore, 641108, Tamil Nadu, India.
Heliyon. 2023 Jan 3;9(1):e12735. doi: 10.1016/j.heliyon.2022.e12735. eCollection 2023 Jan.
is a species of group dwelling old world passerine of family Leiothrichidae. Unavailability of genome-wide sequence and species-specific molecular markers have hindered comprehensive understanding of cooperative breeding behaviour in . Therefore, we generated genome-wide microsatellite markers through whole genome short read sequencing of . A total of 68.8 gigabytes of paired-end raw data were sequenced containing 195,067,054 reads. Total sequenced reads spanned a coverage of 17X with genome size of 1.18 Gb. A large number of microsatellite markers (265,297) were mined in the genome using Krait, and 50 most informative markers were identified and validated further. PCR results validated 47 markers. Of these 47 markers, five were randomly selected and validated in twelve individuals of . Genotyping data on these five loci estimated observed heterozygosity (H) and expected heterozygosity (H) ratios between 0.333 - 0.833 and 0.851-0.906, respectively. Effective allele size ranged from 6.698 to 10.667, inbreeding coefficient of the population ranged from 0.080 to 0.631 and null allele frequency was calculated at 0.055 to 0.303. Polymorphic information content of all the five loci varied between 0.850 and 0.906. Probabilities of exclusion and identity across 5 loci was estimated to be 0.95 and 0.0036, respectively. All the loci showed significant adherence to Hardy-Weinberg equilibrium. The microsatellite markers reported in this study will facilitate future population genetics studies on and other congeneric species.
是雀形目噪鹛科的一种群居旧大陆鸟类。缺乏全基因组序列和物种特异性分子标记阻碍了对其合作繁殖行为的全面理解。因此,我们通过对其进行全基因组短读测序生成了全基因组微卫星标记。共测序了68.8千兆字节的双端原始数据,包含195,067,054条 reads。总测序 reads 的覆盖度为17X,基因组大小为1.18Gb。使用Krait在该基因组中挖掘了大量微卫星标记(265,297个),并进一步鉴定和验证了50个信息最丰富的标记。PCR结果验证了47个标记。在这47个标记中,随机选择了5个并在该物种的12个个体中进行了验证。这5个位点的基因分型数据估计观察杂合度(H)和期望杂合度(H)比率分别在0.333 - 0.833和0.851 - 0.906之间。有效等位基因大小范围为6.698至10.667,种群的近交系数范围为0.080至0.631,无效等位基因频率计算为0.055至0.303。所有5个位点的多态信息含量在0.850至0.906之间变化。估计5个位点的排除概率和同一性概率分别为0.95和0.0036。所有位点均显著符合哈迪 - 温伯格平衡。本研究中报道的微卫星标记将有助于未来对该物种及其他同属物种的群体遗传学研究。