Comparative analysis of the polytene chromosomes of Glossina austeni and Glossina morsitans morsitans

Southern, D. I.; Pell, P.E.

doi:10.1007/bf00331808

Cited by 15 publications

(9 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Well-banded polytene chromosomes can be obtained from pupal trichogen cells found in apical scutellar bristles (Southern and Pell, 1974). Gariou-Papalexiou et al (2007) compared banding patterns among G. pallidipes, G.m.…”

Section: Genetics and Cytogenetics Of Tsetse Fliesmentioning

confidence: 99%

Tsetse flies: Genetics, evolution, and role as vectors

Krafsur

2009

Infection, Genetics and Evolution

View full text Add to dashboard Cite

Tsetse flies (Diptera: Glossinidae) are an ancient taxon of one genus, Glossina, and limited species diversity. All are exclusively haematophagous and confined to sub-Saharan Africa. The Glossina are the principal vectors of African trypanosomes Trypanosoma sp. (Kinetoplastida: Trypanosomatidae) and as such, are of great medical and economic importance. Clearly tsetse flies and trypanosomes are coadapted and evolutionary interactions between them are manifest. Numerous clonally reproducing strains of Trypanosoma sp. exist and their genetic diversities and spatial distributions are inadequately known. Here I review the breeding structures of the principle trypanosome vectors, G. morsitans s.l., G. pallidipes, G. palpalis s.l. and G. fuscipes fuscipes. All show highly structured populations among which there is surprisingly little detectable gene flow. Rather less is known of the breeding structure of T. brucei sensu lato vis à vis their vector tsetse flies but many genetically differentiated strains exist in nature. Genetic recombination in Trypanosoma via meiosis has recently been demonstrated in the laboratory thereby furnishing a mechanism of strain differentiation in addition to that of simple mutation. Spatially and genetically representative sampling of both trypanosome species and strains and their Glossina vectors is a major barrier to a comprehensive understanding of their mutual relationships. G. morsitans s.l., G. pallidipes, G. palpalis s.l. and G. fuscipes fuscipes. All show highly structured populations among which there is surprisingly little detectable gene flow. Rather less is known of the breeding structure of T. brucei sensu lato vis à vis their vector tsetse flies but many genetically differentiated strains exist in nature. Genetic recombination in Trypanosoma via meiosis has recently been demonstrated in the laboratory thereby furnishing a mechanism of strain differentiation in addition to that of simple mutation. Spatially and genetically representative sampling of both trypanosome species and strains and their Glossina vectors is a major barrier to a comprehensive understanding of their mutual relationships.

show abstract

Section: Genetics and Cytogenetics Of Tsetse Fliesmentioning

confidence: 99%

Tsetse flies: Genetics, evolution, and role as vectors

Krafsur

2009

Infection, Genetics and Evolution

View full text Add to dashboard Cite

show abstract

“…Each major division usually commences to the left of a marker band and is further divided from left to right into a number of subdivisions, A, B, C and D, depending on its size. Because of the numbering system used, the band sequence within a major or minor division does not correspond to that reported by Southern and Pell (1974) in their line drawing maps. The similarity of polytene chromosome banding patterns among the four species enabled the homology of the elements to be assessed.…”

Section: Resultsmentioning

confidence: 53%

“…For the current polytene maps the designation and the number of divisions for each arm, developed by Southern and Pell (1974), was used. However, the numbering system used for Drosophila to standardize these maps with those from other insects was adopted.…”

Section: Resultsmentioning

confidence: 99%

“…morsitans (Southern et al 1973), G. austeni (Southern and Pell 1974), G. fuscipes fuscipes (Pell and Southern 1976) and G. pallidipes (Southern and Pell 1981). Difficulties in determining the correspondence of the bands on the chromosomes to the lines on the maps ensure errors of translation and disagreements, even among experts.…”

Section: Introductionmentioning

confidence: 97%

“…Based on their banding pattern, chromosome maps have been constructed for a number of species, e.g. Drosophila melanogaster (Bridges 1935;Lefevre 1976), Chironomus tentans (Beermann 1952), Anopheles gambiae (Coluzzi et al 1979), Ceratitis capitata (Bedo 1987;Zacharopoulou 1990), Bactrocera oleae (Mavragani-Tsipidou et al1992), Bactrocera tryoni (Zhao et al 1998), and Glossina spps (Southern and Pell 1974;Gariou-Papalexiou et al 2000;2002). Today, polytene chromosome maps are available for 270 species of Drosophilids and for more than 250 other Diptera (for a review see Ashburner 1992).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Polytene chromosome maps in four species of tsetse flies Glossina austeni, G. pallidipes, G. morsitans morsitans and G. m. submorsitans (Diptera: Glossinidae): a comparative analysis

et al. 2006

View full text Add to dashboard Cite

Photographic polytene chromosome maps from pupal trichogen cells of four tsetse species, Glossina austeni, G. pallidipes, G. morsitans morsitans and G. m. submorsitans were constructed and compared. The homology of chromosomal elements between the species was achieved by comparing banding patterns. The telomeric and subtelomeric chromosome regions were found to be identical in all species. The pericentromeric regions were found to be similar in the X chromosome and the left arm of L1 chromosome (L1L) but different in L2 chromosome and the right arm of L1 chromosome (L1R). The L2 chromosome differs by a pericentric inversion that is fixed in the three species, G. pallidipes, G. morsitans morsitans and G. m. submorsitans. Moreover, the two morsitans subspecies appeared to be homosequential and differ only by two paracentric inversions on XL and L2L arm. Although a degree of similarity was observed across the homologous chromosomes in the four species, the relative position of specific chromosome regions was different due to chromosome inversions established during their phylogeny. However, there are regions that show no apparent homology between the species, an observation that may be attributed to the considerable intra--chromosomal rearrangements that have occurred following the species divergence. The results of this comparative analysis support the current phylogenetic relationships of the genus Glossina.

show abstract

Tsetse-flies (Glossinidae)

Jordan¹

1993

Medical Insects and Arachnids

View full text Add to dashboard Cite

Comparative analysis of the polytene chromosomes of Glossina austeni and Glossina morsitans morsitans

Cited by 15 publications

References 4 publications

Tsetse flies: Genetics, evolution, and role as vectors

Tsetse flies: Genetics, evolution, and role as vectors

Polytene chromosome maps in four species of tsetse flies Glossina austeni, G. pallidipes, G. morsitans morsitans and G. m. submorsitans (Diptera: Glossinidae): a comparative analysis

Tsetse-flies (Glossinidae)

Contact Info

Product

Resources

About