Sex chromosome variation and cytotaxonomy of the onchocerciasis vector Simulium squamosum in Cameroon and Nigeria

M. Traore-Lamizana; S. Somiari; H. B. Mafuyai; C. G. Vajime; R. J. Post

doi:10.1046/j.0269-283X.2001.00300.x

Sex chromosome variation and cytotaxonomy of the onchocerciasis vector Simulium squamosum in Cameroon and Nigeria

M. Traore-Lamizana, S. Somiari, H. B. Mafuyai, C. G. Vajime, R. J. Post^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

On the basis of sex chromosome variation, three cytotypes of Simulium squamosum (Enderlein) (Diptera: Simuliidae) are described from Cameroon and Nigeria. Simulium squamosum A is the typical form as originally described by Vajime & Dunbar (1975) with chromosome I as the sex chromosome. It occurs throughout most of Cameroon and south-east Nigeria. A second cytotype, S. squamosum B, is described from the river Sanaga (Cameroon). It also has chromosome I as the sex chromosome, but the nature of the sex differential region is different. Simulium squamosum C has no sex-linked chromosomal rearrangements. It is widespread in Nigeria and occurs near Mount Cameroon, where it seems to hybridize with S. squamosum A.

Original language	English
Pages (from-to)	219-223
Number of pages	5
Journal	Medical and Veterinary Entomology
Volume	15
Issue number	2
DOIs	https://doi.org/10.1046/j.0269-283X.2001.00300.x
State	Published - 2001
Externally published	Yes

Keywords

Cameroon
Cytogenetics
Hybridization
Nigeria
Onchocerciasis
S. squamosum
Sex-chromosomes
Sibling species
Simulium damnosum complex
Taxonomy

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10.1046/j.0269-283X.2001.00300.x

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@article{8399e6f86a6d4f78a8168d926f87d2ef,

title = "Sex chromosome variation and cytotaxonomy of the onchocerciasis vector Simulium squamosum in Cameroon and Nigeria",

abstract = "On the basis of sex chromosome variation, three cytotypes of Simulium squamosum (Enderlein) (Diptera: Simuliidae) are described from Cameroon and Nigeria. Simulium squamosum A is the typical form as originally described by Vajime & Dunbar (1975) with chromosome I as the sex chromosome. It occurs throughout most of Cameroon and south-east Nigeria. A second cytotype, S. squamosum B, is described from the river Sanaga (Cameroon). It also has chromosome I as the sex chromosome, but the nature of the sex differential region is different. Simulium squamosum C has no sex-linked chromosomal rearrangements. It is widespread in Nigeria and occurs near Mount Cameroon, where it seems to hybridize with S. squamosum A.",

keywords = "Cameroon, Cytogenetics, Hybridization, Nigeria, Onchocerciasis, S. squamosum, Sex-chromosomes, Sibling species, Simulium damnosum complex, Taxonomy",

author = "M. Traore-Lamizana and S. Somiari and Mafuyai, {H. B.} and Vajime, {C. G.} and Post, {R. J.}",

year = "2001",

doi = "10.1046/j.0269-283X.2001.00300.x",

language = "English",

volume = "15",

pages = "219--223",

journal = "Medical and Veterinary Entomology",

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T1 - Sex chromosome variation and cytotaxonomy of the onchocerciasis vector Simulium squamosum in Cameroon and Nigeria

AU - Traore-Lamizana, M.

AU - Somiari, S.

AU - Mafuyai, H. B.

AU - Vajime, C. G.

AU - Post, R. J.

PY - 2001

Y1 - 2001

N2 - On the basis of sex chromosome variation, three cytotypes of Simulium squamosum (Enderlein) (Diptera: Simuliidae) are described from Cameroon and Nigeria. Simulium squamosum A is the typical form as originally described by Vajime & Dunbar (1975) with chromosome I as the sex chromosome. It occurs throughout most of Cameroon and south-east Nigeria. A second cytotype, S. squamosum B, is described from the river Sanaga (Cameroon). It also has chromosome I as the sex chromosome, but the nature of the sex differential region is different. Simulium squamosum C has no sex-linked chromosomal rearrangements. It is widespread in Nigeria and occurs near Mount Cameroon, where it seems to hybridize with S. squamosum A.

AB - On the basis of sex chromosome variation, three cytotypes of Simulium squamosum (Enderlein) (Diptera: Simuliidae) are described from Cameroon and Nigeria. Simulium squamosum A is the typical form as originally described by Vajime & Dunbar (1975) with chromosome I as the sex chromosome. It occurs throughout most of Cameroon and south-east Nigeria. A second cytotype, S. squamosum B, is described from the river Sanaga (Cameroon). It also has chromosome I as the sex chromosome, but the nature of the sex differential region is different. Simulium squamosum C has no sex-linked chromosomal rearrangements. It is widespread in Nigeria and occurs near Mount Cameroon, where it seems to hybridize with S. squamosum A.

KW - Cameroon

KW - Cytogenetics

KW - Hybridization

KW - Nigeria

KW - Onchocerciasis

KW - S. squamosum

KW - Sex-chromosomes

KW - Sibling species

KW - Simulium damnosum complex

KW - Taxonomy

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U2 - 10.1046/j.0269-283X.2001.00300.x

DO - 10.1046/j.0269-283X.2001.00300.x

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AN - SCOPUS:0034957229

SN - 0269-283X

VL - 15

SP - 219

EP - 223

JO - Medical and Veterinary Entomology

JF - Medical and Veterinary Entomology

IS - 2

ER -

Sex chromosome variation and cytotaxonomy of the onchocerciasis vector Simulium squamosum in Cameroon and Nigeria

Abstract

Keywords

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