Introgressive hybridization between color morphs in a population of cichlid fishes twelve years after human-induced secondary admixis.

The Journal of Heredity
Bernd EggerWalter Salzburger

Abstract

In the extremely species-rich haplochromine cichlid fishes of the East African Great Lakes, prezygotic isolation between closely related species is often maintained by color-assortative mating. In 1998, local fisherman working for the ornamental fish trade released different color morphs of the cichlid genus Tropheus into a small harbor basin in the southern part of Lake Tanganyika. This artificial amalgamation of color morphs provides a unique possibility to study mating patterns in cichlids in a natural environment over time. In a precursor study, we analyzed genotypes and phenotypes of almost 500 individuals sampled between 1999 and 2001 and uncovered a marked degree of color-assortative mating, which depended on the level of color pattern dissimilarity between morphs. Twelve years after introduction of nonindigenous morphs, we again sampled Tropheus individuals from the harbor basin and an adjacent, originally pure population and analyzed phenotypes (coloration) and genotypes (mitochondrial control region and 9 microsatellite loci) to assess the current status of the admixed population. Principal component analyses of color score data and population assignment tests demonstrate an increasing level of introgressive hybridiza...Continue Reading

References

Aug 1, 1989·Proceedings of the National Academy of Sciences of the United States of America·T D KocherA C Wilson
Aug 5, 1997·Proceedings of the National Academy of Sciences of the United States of America·W O McMillanJ Mallet
Nov 30, 1999·Hematology/oncology Clinics of North America·P J Henslee-Downey, E Gluckman
Dec 3, 1999·Heredity·L H RiesebergR K Wayne
Feb 7, 2001·Molecular Biology and Evolution·C SturmbauerE Verheyen
Feb 6, 2003·Journal of Molecular Evolution·Sanja BaricChristian Sturmbauer
May 20, 2004·Journal of Evolutionary Biology·C D JigginsA Rodrigues
Dec 14, 2004·Proceedings. Biological Sciences·Martine E MaanJacques J M van Alphen
Mar 18, 2006·Proceedings. Biological Sciences·Walter SalzburgerChristian Sturmbauer
May 17, 2006·Trends in Ecology & Evolution·Ole Seehausen
Jun 23, 2006·Proceedings. Biological Sciences·Bernd EggerKristina M Sefc
Jun 5, 2008·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Rike B StelkensOle Seehausen
May 8, 2009·Bioinformatics·Michael Matschiner, Walter Salzburger
Oct 3, 2009·Evolution; International Journal of Organic Evolution·Rike B StelkensOle Seehausen
Mar 9, 2010·Frontiers in Zoology·Juergen HerlerChristian Sturmbauer
Feb 9, 2011·Current Biology : CB·Domino A JoyceOle Seehausen
Apr 5, 2011·Molecular Ecology·Walter SalzburgerArndt Von Haeseler

❮ Previous
Next ❯

Citations

Feb 16, 2013·BMC Evolutionary Biology·Joost A M RaeymaekersFilip A M Volckaert
Jun 27, 2015·International Journal of Molecular Sciences·Birifdzi ZimisuharaMahmood Maziah
Jan 1, 2014·Journal of Evolutionary Biology·O M SelzO Seehausen
May 6, 2015·Ecology and Evolution·Kristina M SefcStephan Koblmüller
May 10, 2018·Evolution; International Journal of Organic Evolution·D Justin YehMaria R Servedio
May 13, 2017·The Journal of Heredity·Sri Pratima NandamuriKaren L Carleton
Jul 14, 2020·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Sina J RometschAxel Meyer

❮ 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.