Cytogenetic studies on holocentric chromosomes of five species of triatomines (Heteroptera: Reduviidae)
The chromosome number and meiotic cycle of triatomines were investigated. All five species presented the same diploid chromosome number, 2n = 22 (20A + XY in the male). Phylogenetic relationships based on chromosomal evidence and C-banded karyotypes in the subfamily are discussed. It is suggested th...
| Authors: | , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 1997 |
| Country: | Brasil |
| Institution: | Universidade Estadual Paulista (UNESP) |
| Repository: | Repositório Institucional da UNESP |
| Language: | English |
| OAI Identifier: | oai:repositorio.unesp.br:11449/224308 |
| Online Access: | http://hdl.handle.net/11449/224308 |
| Access Level: | Open access |
| Keyword: | C-banding Chagas' disease Cytogenetics Holocentric chromosomes Triatoma |
| Summary: | The chromosome number and meiotic cycle of triatomines were investigated. All five species presented the same diploid chromosome number, 2n = 22 (20A + XY in the male). Phylogenetic relationships based on chromosomal evidence and C-banded karyotypes in the subfamily are discussed. It is suggested that differences in DNA content are mainly due to variations in the amount of C-heterocnromatin, which may be interpreted as loss and/or gain of C-regions. This interpretation is supported by the presence of meiotic and mitotic chromocentres which facilitate the transfer of C-positive material. |
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