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A new cytotype of Simulium squamosum from south‐west Cameroon
Author(s) -
Mustapha M.,
Post R. J.,
Enyong P.,
Lines J.
Publication year - 2004
Publication title -
medical and veterinary entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 82
eISSN - 1365-2915
pISSN - 0269-283X
DOI - 10.1111/j.0269-283x.2004.00501.x
Subject(s) - biology , chromosomal inversion , chromosome , inversion (geology) , simulium , polytene chromosome , evolutionary biology , zoology , karyotype , genetics , ecology , paleontology , larva , structural basin , gene
. A new cytotype of Simulium squamosum Enderlein (Diptera: Simuliidae) (here named S. squamosum ‘D’) is described from around Mount Cameroon in south‐west Cameroon on the basis of sex‐chromosome differences on the short arm of chromosome I. Two polymorphic inversions, IS‐To (a new inversion) and IS‐2, are partially Y linked. These inversions usually occur together, although IS‐To has a higher frequency and is more strongly Y linked than IS‐2. This sex‐chromosome system has not been previously described and the occurrence and evolution of sex‐chromosome systems in S. squamosum is discussed.