Differential patterns of spatial divergence in microsatellite and allozyme alleles: further evidence for locus-specific selection in the acorn barnacle, Semibalanus balanoides?

Molecular Ecology
F DufresneL Bernatchez

Abstract

We compared patterns of genetic structure at potentially selected (two allozyme loci) and neutral molecular markers (six microsatellite loci) in the acorn barnacle, Semibalanus balanoides from the Gulf of St. Lawrence. Our results confirmed the presence of a geographical shift in alleles MPI and GPI near the Miramichi River. In contrast, no significant patterns of population differentiation among samples located north and south of the river mouth were detected for four of six microsatellite loci. However, analysis of molecular variance (amova) at individual loci revealed that a significant proportion of the total variance in allele frequencies was partitioned among samples located north and south of the river for both the allozyme and the other two microsatellite loci. The two most common alleles at these microsatellites showed frequencies that were highly correlated (r = 0.65-0.74, P < 0.05) with those of the MPI*2 allele, perhaps because of either physical linkage or epistasis. The two allozyme loci were significantly correlated in barnacles located north of the Miramichi River (r = 0.86, P < 0.05). Overall, our results supported the hypothesis that the broad scale pattern of allozyme allelic shifts is maintained by selection...Continue Reading

References

Apr 20, 1967·Biochemical and Biophysical Research Communications·G D Fasman, J Potter
Sep 1, 1980·Proceedings of the National Academy of Sciences of the United States of America·R K KoehnF Immermann
Dec 1, 1996·Genetics·J GoudetF Rousset
Mar 18, 2000·Proceedings. Biological Sciences·P S SchmidtD M Rand
Nov 18, 2000·Genome Génome / Conseil National De Recherches Canada·M PillayA Tenkouano
Mar 10, 2001·Nature·T Wirth, L Bernatchez
Aug 1, 1993·Trends in Ecology & Evolution·D C QuellerC R Hughes
Feb 1, 1993·Evolution; International Journal of Organic Evolution·Mark D Bertness, Steven D Gaines
Jan 1, 1989·Evolution; International Journal of Organic Evolution·William R Rice

❮ Previous
Next ❯

Citations

Jul 7, 2012·Integrative and Comparative Biology·Patrick A Flight, David M Rand
Jun 15, 2007·Molecular Ecology·Paul S SchmidtJohn Christner
Sep 11, 2012·Journal of Fish Biology·B O'FarrellT F Cross
Apr 12, 2011·Molecular Ecology·Nicolas BiernePatrice David
Jun 26, 2014·Ecology and Evolution·Morten Tange OlsenPer J Palsbøll
Oct 3, 2002·Annual Review of Genetics·B S Weir, W G Hill
Feb 27, 2020·Proceedings of the National Academy of Sciences of the United States of America·Joaquin C B NunezDavid M Rand
Mar 5, 2019·Evolutionary Applications·Simon BernatchezMartin A Mallet
Sep 9, 2020·Molecular Biology and Evolution·Joaquin C B NunezDavid M Rand

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.