Evidence map›Paper›PMID 41350708›Full record

ArticleBMC biology2025

Signals of corresponding genetic diversity loss in four warbler species exhibiting regional or range-wide declines.

Madelyn J Ore, Bronwyn G Butcher, Michael E Akresh, Jeremy J Kirchman, Joel Ralston, Patrick J Ruhl, David P L Toews, Irby J Lovette, Jennifer Walsh

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Article in BMC biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Madelyn J OreDepartment of Neurobiology and Behavior, Cornell University, Ithaca, NY, 14850, USA.
Bronwyn G ButcherFuller Evolutionary Biology Program, Cornell Lab of Ornithology, Cornell University, Ithaca, NY, 14850, USA.
Michael E AkreshDepartment of Environmental Studies, Antioch University New England, Keene, NH, 03431, USA.
Jeremy J KirchmanNew York State Museum, Albany, NY, 12230, USA.
Joel RalstonDepartment of Biology, Saint Mary's College, Notre Dame, IN, 46556, USA.
Patrick J RuhlDepartment of Forestry and Natural Resources, Purdue University, West Lafayette, IN, 47907, USA.
David P L ToewsDepartment of Biology, The Pennsylvania State University, University Park, PA, 16802, USA.
Irby J LovetteFuller Evolutionary Biology Program, Cornell Lab of Ornithology, Cornell University, Ithaca, NY, 14850, USA.
Jennifer WalshFuller Evolutionary Biology Program, Cornell Lab of Ornithology, Cornell University, Ithaca, NY, 14850, USA. jlw395@cornell.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAnthropogenic forces have resulted in staggering losses of biodiversity and population declines in many species over the past two centuries. Associated with these declines are potential adverse effects linked to small population sizes, including loss of genetic diversity and increased levels of inbreeding. Here, we leverage DNA sequencing from museum specimens to examine genetic variation between historic and contemporary populations of four species of warblers (Aves, Setophaga) that vary with respect to degree of population changes over this period. To explore the genetic impacts of varying population declines, we gathered polymorphism data at 157 PCR-amplified loci in 341 individuals sampled in two time periods-historic (1789-1955) vs contemporary (2001-2020).

resultsFor all four species, we observed decreases in nucleotide diversity and heterozygosity in contemporary data sets compared to historic data sets. In three species, this loss was accompanied by a corresponding increase in inbreeding coefficient F

conclusionOur findings suggest that loss of genetic diversity resulting from historic population declines persists over time (50-100 years), even when population trajectories later stabilize. Our results highlight the utility of long-term genetic temporal comparisons to reveal hidden genetic diversity loss and reveal important considerations for managing genetic diversity loss.

Indexed as

Genetic VariationSongbirdsAnimalsInbreedingPopulation DensityPopulation DynamicsConservationDiversityEffective population sizesHistoric DNAPopulation declinesSetophaga

Identifiers

PMID41350708
PMCPMC12797644

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.