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Transient Microgeographic Clines during B Chromosome Invasion.
Am Nat. 2015 Nov; 186(5):675-81.AN

Abstract

The near-neutral model of B chromosome evolution predicts that the invasion of a new population should last some tens of generations, but the details on how it proceeds in real populations are mostly unknown. Trying to fill this gap, we analyze here a natural population of the grasshopper Eyprepocnemis plorans at three time points during the last 35 years. Our results show that B chromosome frequency increased significantly during this period and that a cline observed in 1992 had disappeared in 2012 once B chromosome frequency reached an upper limit at all sites sampled. This indicates that, during B chromosome invasion, transient clines for B chromosome frequency are formed at the invasion front on a microgeographic scale. Computer simulation experiments showed that the pattern of change observed for genotypic frequencies is consistent with the existence of B chromosome drive through females and selection against individuals with a high number of B chromosomes.

Authors+Show Affiliations

Departamento de Genética, Facultad de Ciencias, Avenida Fuentenueva s/n, Universidad de Granada, 18071 Granada, Spain.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26655780

Citation

Camacho, Juan Pedro M., et al. "Transient Microgeographic Clines During B Chromosome Invasion." The American Naturalist, vol. 186, no. 5, 2015, pp. 675-81.
Camacho JP, Shaw MW, Cabrero J, et al. Transient Microgeographic Clines during B Chromosome Invasion. Am Nat. 2015;186(5):675-81.
Camacho, J. P., Shaw, M. W., Cabrero, J., Bakkali, M., Ruíz-Estévez, M., Ruíz-Ruano, F. J., Martín-Blázquez, R., & López-León, M. D. (2015). Transient Microgeographic Clines during B Chromosome Invasion. The American Naturalist, 186(5), 675-81. https://doi.org/10.1086/683172
Camacho JP, et al. Transient Microgeographic Clines During B Chromosome Invasion. Am Nat. 2015;186(5):675-81. PubMed PMID: 26655780.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Transient Microgeographic Clines during B Chromosome Invasion. AU - Camacho,Juan Pedro M, AU - Shaw,Michael W, AU - Cabrero,Josefa, AU - Bakkali,Mohammed, AU - Ruíz-Estévez,Mercedes, AU - Ruíz-Ruano,Francisco J, AU - Martín-Blázquez,Rubén, AU - López-León,María Dolores, Y1 - 2015/08/27/ PY - 2015/12/15/entrez PY - 2015/12/15/pubmed PY - 2016/9/27/medline SP - 675 EP - 81 JF - The American naturalist JO - Am. Nat. VL - 186 IS - 5 N2 - The near-neutral model of B chromosome evolution predicts that the invasion of a new population should last some tens of generations, but the details on how it proceeds in real populations are mostly unknown. Trying to fill this gap, we analyze here a natural population of the grasshopper Eyprepocnemis plorans at three time points during the last 35 years. Our results show that B chromosome frequency increased significantly during this period and that a cline observed in 1992 had disappeared in 2012 once B chromosome frequency reached an upper limit at all sites sampled. This indicates that, during B chromosome invasion, transient clines for B chromosome frequency are formed at the invasion front on a microgeographic scale. Computer simulation experiments showed that the pattern of change observed for genotypic frequencies is consistent with the existence of B chromosome drive through females and selection against individuals with a high number of B chromosomes. SN - 1537-5323 UR - https://www.unboundmedicine.com/medline/citation/26655780/Transient_Microgeographic_Clines_during_B_Chromosome_Invasion_ L2 - http://dx.doi.org/10.1086/683172 DB - PRIME DP - Unbound Medicine ER -