Integration of a B chromosome into the A genome of a wasp, revisited

Sonia Rocha-Sanchez, S. G. Pompolo, F. Perfectti, J. P M Camacho

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

A previous study showed that in the haplodiploid solitary wasp Trypoxylon albitarse, most individuals carry one B chromosome per haploid genome, the same dosage as the standard (A) chromosomes, indicating a possible regularization of B-chromosome meiotic behaviour and its integration into the A genome. In a new sampling, we have analysed 15 populations (including 9 out of the 10 previously analysed) to test the evolution of this integration process. The new results provide a direct report of the invasion process in the Porto Firme population, where B frequency has dramatically increased in only four generations. In the populations from the Viçosa region, however, B frequency has remained stable, although the principal B type, the metacentric one, has increased in frequency at the expense of the acrocentric one in several populations. The implications of these new results on the hypothesis of the integration of these B chromosomes, as regular members of the A genome, are discussed.

Original languageEnglish
Pages (from-to)1475-1478
Number of pages4
JournalProceedings of the Royal Society B: Biological Sciences
Volume269
Issue number1499
DOIs
StatePublished - Jul 22 2002
Externally publishedYes

Fingerprint

Chromosomes, Human, 4-5
Wasps
Chromosomes
wasp
chromosome
genome
Genes
Genome
Population
Trypoxylon
acrocentric chromosomes
Haploidy
haploidy
Sampling
chromosomes
B chromosomes
sampling
dosage
testing

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences(all)
  • Agricultural and Biological Sciences (miscellaneous)

Cite this

Integration of a B chromosome into the A genome of a wasp, revisited. / Rocha-Sanchez, Sonia; Pompolo, S. G.; Perfectti, F.; Camacho, J. P M.

In: Proceedings of the Royal Society B: Biological Sciences, Vol. 269, No. 1499, 22.07.2002, p. 1475-1478.

Research output: Contribution to journalArticle

Rocha-Sanchez, Sonia ; Pompolo, S. G. ; Perfectti, F. ; Camacho, J. P M. / Integration of a B chromosome into the A genome of a wasp, revisited. In: Proceedings of the Royal Society B: Biological Sciences. 2002 ; Vol. 269, No. 1499. pp. 1475-1478.
@article{deff75060d9f46db994fa0955e9721cb,
title = "Integration of a B chromosome into the A genome of a wasp, revisited",
abstract = "A previous study showed that in the haplodiploid solitary wasp Trypoxylon albitarse, most individuals carry one B chromosome per haploid genome, the same dosage as the standard (A) chromosomes, indicating a possible regularization of B-chromosome meiotic behaviour and its integration into the A genome. In a new sampling, we have analysed 15 populations (including 9 out of the 10 previously analysed) to test the evolution of this integration process. The new results provide a direct report of the invasion process in the Porto Firme population, where B frequency has dramatically increased in only four generations. In the populations from the Vi{\cc}osa region, however, B frequency has remained stable, although the principal B type, the metacentric one, has increased in frequency at the expense of the acrocentric one in several populations. The implications of these new results on the hypothesis of the integration of these B chromosomes, as regular members of the A genome, are discussed.",
author = "Sonia Rocha-Sanchez and Pompolo, {S. G.} and F. Perfectti and Camacho, {J. P M}",
year = "2002",
month = "7",
day = "22",
doi = "10.1098/rspb.2002.2040",
language = "English",
volume = "269",
pages = "1475--1478",
journal = "Proceedings of the Royal Society B: Biological Sciences",
issn = "0962-8452",
publisher = "Royal Society of London",
number = "1499",

}

TY - JOUR

T1 - Integration of a B chromosome into the A genome of a wasp, revisited

AU - Rocha-Sanchez, Sonia

AU - Pompolo, S. G.

AU - Perfectti, F.

AU - Camacho, J. P M

PY - 2002/7/22

Y1 - 2002/7/22

N2 - A previous study showed that in the haplodiploid solitary wasp Trypoxylon albitarse, most individuals carry one B chromosome per haploid genome, the same dosage as the standard (A) chromosomes, indicating a possible regularization of B-chromosome meiotic behaviour and its integration into the A genome. In a new sampling, we have analysed 15 populations (including 9 out of the 10 previously analysed) to test the evolution of this integration process. The new results provide a direct report of the invasion process in the Porto Firme population, where B frequency has dramatically increased in only four generations. In the populations from the Viçosa region, however, B frequency has remained stable, although the principal B type, the metacentric one, has increased in frequency at the expense of the acrocentric one in several populations. The implications of these new results on the hypothesis of the integration of these B chromosomes, as regular members of the A genome, are discussed.

AB - A previous study showed that in the haplodiploid solitary wasp Trypoxylon albitarse, most individuals carry one B chromosome per haploid genome, the same dosage as the standard (A) chromosomes, indicating a possible regularization of B-chromosome meiotic behaviour and its integration into the A genome. In a new sampling, we have analysed 15 populations (including 9 out of the 10 previously analysed) to test the evolution of this integration process. The new results provide a direct report of the invasion process in the Porto Firme population, where B frequency has dramatically increased in only four generations. In the populations from the Viçosa region, however, B frequency has remained stable, although the principal B type, the metacentric one, has increased in frequency at the expense of the acrocentric one in several populations. The implications of these new results on the hypothesis of the integration of these B chromosomes, as regular members of the A genome, are discussed.

UR - http://www.scopus.com/inward/record.url?scp=53149139899&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=53149139899&partnerID=8YFLogxK

U2 - 10.1098/rspb.2002.2040

DO - 10.1098/rspb.2002.2040

M3 - Article

VL - 269

SP - 1475

EP - 1478

JO - Proceedings of the Royal Society B: Biological Sciences

JF - Proceedings of the Royal Society B: Biological Sciences

SN - 0962-8452

IS - 1499

ER -