Evidence map›Paper›PMID 19549324›Full record

ArticleBMC evolutionary biology2009

Investigations of fine-scale phylogeography in Tigriopus californicus reveal historical patterns of population divergence.

Christopher S Willett, Jason T Ladner

Abstract read
In one paragraph

Article in BMC evolutionary biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
–field-weighted citation impact
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

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed.

  1. Article
  2. Heat exposure improves acute copper tolerance in the intertidal copepod Tigriopus californicus.Environmental science and pollution research international · 2026
    Article
  3. Article
  4. The role of mitonuclear incompatibilities in allopatric speciation.Cellular and molecular life sciences : CMLS · 2022
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Christopher S WillettDepartment of Biology, University of North Carolina, Chapel Hill, Chapel Hill NC 27599-3280, USA. willett4@email.unc.edu
Jason T Ladner

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe intertidal copepod Tigriopus californicus is a model for studying the process of genetic divergence in allopatry and for probing the nature of genetic changes that lead to reproductive isolation. Although previous studies have revealed a pattern of remarkably high levels of genetic divergence between the populations of this species at several spatial scales, it is not clear what types of historical processes are responsible. Particularly lacking are data that can yield insights into population history from the finest scales of geographic resolution.

resultsSequence variation in both cytochrome b (CYTB, mtDNA) and the rieske iron-sulfur protein (RISP, nuclear) are examined at a fine scale within four different regions for populations of T. californicus. High levels of genetic divergence are seen for both genes at the broader scale, and genetic subdivision is apparent at nearly all scales in these populations for these two genes. Patterns of polymorphism and divergence in both CYTB and RISP suggest that selection may be leading to non-neutral evolution of these genes in several cases but a pervasive pattern of neither selection nor coadaptation is seen for these markers.

conclusionThe use of sequence data at a fine-scale of resolution in this species has provided novel insights into the processes that have resulted in the accumulation of genetic divergence among populations. This divergence is likely to result from an interplay between a limited dispersal ability for this copepod and the temporal instability of copepod habitat. Both shorter-term processes such as the extinction/recolonization dynamics of copepod pools and longer-term processes such as geological uplift of coastline and sea level changes appear to have impacted the patterns of differentiation. Some patterns of sequence variation are consistent with selection acting upon the loci used in this study; however, it appears that most phylogeographic patterns are the result of history and not selection on these genes in this species.

Indexed as

Evolution, MolecularPhylogenySelection, GeneticAnimalsCell NucleusCopepodaCytochromes bDNA, MitochondrialElectron Transport Complex IIIGenetics, PopulationGeographyPolymorphism, GeneticSequence Analysis, DNACytochromes bDNA, MitochondrialElectron Transport Complex IIIRieske iron-sulfur protein

Identifiers

PMID19549324
PMCPMC2708153

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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 OpenQuestion graph.