Anthropocene genetic diversity loss in the marine tropics

• 成果类型: Article
• 署名作者: Clark, Rene D.; Reid, Brendan N.; Garcia, Eric; Malabag, Marial; Waples, Robin S.; Abesamis, Rene A.; Baldisimo, Jemelyn Grace P.; Bucol, Abner A.; Fitz, Kyra S.; Magnuson, Sharon F.; Muallil, Richard N.; Nanola, Cleto L., Jr.; Roberts, Roy; Whalen, John C.; Bird, Christopher E.; Carpenter, Kent E.; Pinsky, Malin L.
• 署名单位: Drexel University; Rutgers University System; Rutgers University New Brunswick; University of California System; University of California Santa Cruz; University of Namur; Old Dominion University; University of Washington; University of Washington Seattle; University of the Philippines System; University of the Philippines Diliman; Silliman University; Tunghai University; Academia Sinica - Taiwan; Mindanao State University System; Mindanao State University-TCTO; University of the Philippines System; University of the Philippines Mindanao
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-8424; 1091-6490
• 发表日期: 2025-11-18
• 页码: e2513012122
• 关键词: genetic diversity loss; temporal genomics; museomics; coral triangle; anthropocene; effective population-size; EVOLUTION; LEIOGNATHIDAE; biodiversity; teleostei; set

摘要

Genetic diversity is a crucial component of biodiversity, and as such, its maintenance and preservation is of high conservation concern. Tropical environments are undergoing intense rates of environmental change, and these changes may be driving large declines in genetic diversity. However, data on genetic diversity are highly skewed towards temperate regions. The degree to which diversity loss has occurred in tropical species, particularly marine species, remains an open and important question. Here, we directly compare genomic data from modern and museum collections of two commercially harvested nearshore marine fishes ( (Equulites laterofenestra and Gazza minuta) gathered from a single location in the Philippines, spanning a century of intense environmental change. These data reveal a marked loss in genetic diversity and evidence for multiple orders of magnitude reductions in effective population size (Ne) in both species, indicating substantial genomic erosion. Such a decline highlights the long-lasting genomic consequences of anthropogenic activity and sheds light on an, until-now, invisible loss of diversity from the most biodiverse ocean region.