Population Genomic Analysis Reveals Contrasting Demographic Changes of Two Closely Related Dolphin Species in the Last Glacial
- 주제(키워드) climate change , genome sequencing , population structure , Tursiops aduncus , Tursiops truncatus
- 주제(기타) Biochemistry & Molecular Biology; Evolutionary Biology; Genetics & Heredity
- 설명문(일반) [Vijay, Nagarjun; Zhang, Jianzhi] Univ Michigan, Dept Ecol & Evolutionary Biol, Ann Arbor, MI 48109 USA; [Park, Chungoo; Oh, Jooseong] Chonnam Natl Univ, Sch Biol Sci & Technol, Gwangju, South Korea; [Jin, Soyeong; Kern, Elizabeth; Park, Joong-Ki] Ewha Womans Univ, Div EcoSci, Seoul, South Korea; [Kim, Hyun Woo] Natl Inst Fisheries Sci, Cetacean Res Inst, Ulsan, South Korea
- 관리정보기술 faculty
- 등재 SCIE, SCOPUS
- 발행기관 OXFORD UNIV PRESS
- 발행년도 2018
- URI http://www.dcollection.net/handler/ewha/000000156738
- 본문언어 영어
- Published As http://dx.doi.org/10.1093/molbev/msy108
초록/요약
Population genomic data can be used to infer historical effective population sizes (N-e), which help study the impact of past climate changes on biodiversity. Previous genome sequencing of one individual of the common bottlenose dolphin Tursiops truncatus revealed an unusual, sharp rise in N-e during the last glacial, raising questions about the reliability, generality, underlying cause, and biological implication of this finding. Here we first verify this result by additional sampling of T. truncatus. We then sequence and analyze the genomes of its close relative, the Indo-Pacific bottlenose dolphin T. aduncus. The two species exhibit contrasting demographic changes in the last glacial, likely through actual changes in population size and/or alterations in the level of gene flow among populations. Our findings suggest that even closely related species can have drastically different responses to climatic changes, making predicting the fate of individual species in the ongoing global warming a serious challenge.
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