Chanthran Shyama Sundari Devi, Lim Phaik-Eem, Li Yuan, Liao Te-Yu, Poong Sze-Wan, Du Jianguo, Hussein Muhammad Ali Syed, Sade Ahemad, Rumpet Richard, Loh Kar-Hoe
Institute of Ocean and Earth Sciences, University of Malaya, Kuala Lumpur 50603, Malaysia University of Malaya Kuala Lumpur Malaysia.
Institute for Advanced Studies, University of Malaya, Kuala Lumpur 50603, Malaysia Third Institute of Oceanography, Ministry of Natural Resources Xiamen China.
Zookeys. 2020 Feb 12;911:139-160. doi: 10.3897/zookeys.911.39222. eCollection 2020.
A background study is important for the conservation and stock management of a species. is a coastal Indo-Pacific species, sourced for human consumption. This study examined 134 samples from the central west and east coasts of Peninsular (West) Malaysia and East Malaysia. A 1446-bp concatenated dataset of mtDNA COI and Cyt sequences was used in this study and 83 haplotypes were identified, of which 79 are unique haplotypes and four are shared haplotypes. Populations of in Malaysia are genetically heterogenous as shown by the high level of haplotype diversity ranging from 0.9167-0.9952, low nucleotide diversity ranging from 0.0288-0.3434, and high F values (within population genetic variation). Population genetic structuring is not distinct as shown by the shared haplotypes between geographic populations and mixtures of haplotypes from different populations within the same genetic cluster. The gene flow patterns and population structuring observed among these regions are likely attributed to geographical distance, past historical events, allopatric speciation, dispersal ability and water currents. For instance, the mixture of haplotypes revealed an extraordinary migration ability of (>1200 km) via ancient river connectivity. The negative overall value of the neutrality test and a non-significant mismatch distribution are consistent with demographic expansion(s) in the past. The median-joining network concurred with the maximum likelihood haplotype tree with three major clades resolved. The scarcity of information on this species is an obstacle for future management and conservation purposes. Hence, this study aims to contribute information on the population structure, genetic diversity, and historical demography of in Malaysia.
背景研究对于一个物种的保护和种群管理至关重要。[该物种名称未给出]是一种分布于印度-太平洋沿海的物种，被用于人类消费。本研究检测了来自马来西亚半岛（西部）中西部和东海岸以及东马来西亚的134个样本。本研究使用了一个由线粒体DNA细胞色素氧化酶亚基I（COI）和细胞色素b（Cyt b）序列组成的1446碱基对的串联数据集，并鉴定出83个单倍型，其中79个是独特单倍型，4个是共享单倍型。马来西亚[该物种名称未给出]的种群在遗传上是异质的，单倍型多样性水平较高，范围为0.9167 - 0.9952，核苷酸多样性较低，范围为0.0288 - 0.3434，且F值较高（种群内遗传变异）。地理种群之间共享单倍型以及同一遗传簇内不同种群单倍型的混合表明，种群遗传结构并不明显。在这些区域观察到的基因流动模式和种群结构可能归因于地理距离、过去的历史事件、异域物种形成、扩散能力和水流。例如，单倍型的混合揭示了[该物种名称未给出]通过古代河流连通性具有非凡的迁移能力（超过1200公里）。中性检验的总体负值和不显著的错配分布与过去的种群扩张一致。中位数连接网络与最大似然单倍型树一致，解析出三个主要分支。关于该物种的信息匮乏是未来管理和保护工作的一个障碍。因此，本研究旨在提供有关马来西亚[该物种名称未给出]的种群结构、遗传多样性和历史种群统计学的信息。
