Cytogenetics of laboratory colonies of Simulium vittatum cytospecies IS-7 (Diptera

Simuliidae)

Charles Brockhouse, Peter H. Adler

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Laboratory colonies of the black fly Simulium vittatum Zetterstedt cytospecies IS-7 were analyzed cytogenetically and compared with the original New York population from which source material was collected 18 yr earlier. All sex chromosomes and major autosomal polymorphisms that were present in the source population were still represented in the laboratory colonies. However, the extent of sex linkage and the frequencies of four of the five major autosomal inversions changed significantly in at least one colony, perhaps because of bottlenecks experienced by the colony. A complete absence of males homozygous for the IS-7 inversion in both field and colony material is explained by postulating that the Y2 chromosome, representing the inverted condition for the IS-7 sequence, is absent from the population or acts as a rare reproductive lethal. This example possibly represents pseudo-partial sex linkage involving the X-linked sequences.

Original languageEnglish
Pages (from-to)293-297
Number of pages5
JournalJournal of Medical Entomology
Volume39
Issue number2
StatePublished - Mar 2002
Externally publishedYes

Fingerprint

Simulium vittatum
Simuliidae
cytogenetics
Cytogenetics
Diptera
sex linkage
Population
Sex Chromosomes
sex chromosomes
lethal genes
Chromosomes
genetic polymorphism
chromosomes

All Science Journal Classification (ASJC) codes

  • Insect Science
  • veterinary(all)

Cite this

Cytogenetics of laboratory colonies of Simulium vittatum cytospecies IS-7 (Diptera : Simuliidae). / Brockhouse, Charles; Adler, Peter H.

In: Journal of Medical Entomology, Vol. 39, No. 2, 03.2002, p. 293-297.

Research output: Contribution to journalArticle

@article{574f90a7017746c6a01f6ee4e660c76f,
title = "Cytogenetics of laboratory colonies of Simulium vittatum cytospecies IS-7 (Diptera: Simuliidae)",
abstract = "Laboratory colonies of the black fly Simulium vittatum Zetterstedt cytospecies IS-7 were analyzed cytogenetically and compared with the original New York population from which source material was collected 18 yr earlier. All sex chromosomes and major autosomal polymorphisms that were present in the source population were still represented in the laboratory colonies. However, the extent of sex linkage and the frequencies of four of the five major autosomal inversions changed significantly in at least one colony, perhaps because of bottlenecks experienced by the colony. A complete absence of males homozygous for the IS-7 inversion in both field and colony material is explained by postulating that the Y2 chromosome, representing the inverted condition for the IS-7 sequence, is absent from the population or acts as a rare reproductive lethal. This example possibly represents pseudo-partial sex linkage involving the X-linked sequences.",
author = "Charles Brockhouse and Adler, {Peter H.}",
year = "2002",
month = "3",
language = "English",
volume = "39",
pages = "293--297",
journal = "Journal of Medical Entomology",
issn = "0022-2585",
publisher = "Entomological Society of America",
number = "2",

}

TY - JOUR

T1 - Cytogenetics of laboratory colonies of Simulium vittatum cytospecies IS-7 (Diptera

T2 - Simuliidae)

AU - Brockhouse, Charles

AU - Adler, Peter H.

PY - 2002/3

Y1 - 2002/3

N2 - Laboratory colonies of the black fly Simulium vittatum Zetterstedt cytospecies IS-7 were analyzed cytogenetically and compared with the original New York population from which source material was collected 18 yr earlier. All sex chromosomes and major autosomal polymorphisms that were present in the source population were still represented in the laboratory colonies. However, the extent of sex linkage and the frequencies of four of the five major autosomal inversions changed significantly in at least one colony, perhaps because of bottlenecks experienced by the colony. A complete absence of males homozygous for the IS-7 inversion in both field and colony material is explained by postulating that the Y2 chromosome, representing the inverted condition for the IS-7 sequence, is absent from the population or acts as a rare reproductive lethal. This example possibly represents pseudo-partial sex linkage involving the X-linked sequences.

AB - Laboratory colonies of the black fly Simulium vittatum Zetterstedt cytospecies IS-7 were analyzed cytogenetically and compared with the original New York population from which source material was collected 18 yr earlier. All sex chromosomes and major autosomal polymorphisms that were present in the source population were still represented in the laboratory colonies. However, the extent of sex linkage and the frequencies of four of the five major autosomal inversions changed significantly in at least one colony, perhaps because of bottlenecks experienced by the colony. A complete absence of males homozygous for the IS-7 inversion in both field and colony material is explained by postulating that the Y2 chromosome, representing the inverted condition for the IS-7 sequence, is absent from the population or acts as a rare reproductive lethal. This example possibly represents pseudo-partial sex linkage involving the X-linked sequences.

UR - http://www.scopus.com/inward/record.url?scp=0036512701&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036512701&partnerID=8YFLogxK

M3 - Article

VL - 39

SP - 293

EP - 297

JO - Journal of Medical Entomology

JF - Journal of Medical Entomology

SN - 0022-2585

IS - 2

ER -