Cytotaxonomy of Simulium cauchense Floch & Abonnenc and Simulium quadrifidum Lutz (Diptera: Simuliidae) in Brazilian Amazonia
Simulium cauchense Floch & Abonnenc and Simulium quadrifidum Lutz are widely distributed in the Amazon region and are morphologically similar at the larval and pupal stages. Chromosomally, these species are readily distinguished by the position of the nucleolar organizer, which is in the short arm o...
| Autor principal: | Alvan-Aguilar, Miriam Adriana |
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| Outros Autores: | Hamada, Neusa, Adler, Peter H., Luz, Sérgio Luíz Bessa |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Memórias do Instituto Oswaldo Cruz
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/14531 |
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oai:repositorio:1-14531 |
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oai:repositorio:1-14531 Cytotaxonomy of Simulium cauchense Floch & Abonnenc and Simulium quadrifidum Lutz (Diptera: Simuliidae) in Brazilian Amazonia Alvan-Aguilar, Miriam Adriana Hamada, Neusa Adler, Peter H. Luz, Sérgio Luíz Bessa Chromosome Chromosome Analysis Cytotaxonomy Diagnostic Procedure Fly Gill Insect Larva Morphology Nonhuman Pigmentation Sex Chromosome Sex Linkage Simulium Structure Analysis Diptera Insecta Simuliidae Simulium (genus) Simulium (subgenus) Simulium Cauchense Simulium Quadrifidum Simulium cauchense Floch & Abonnenc and Simulium quadrifidum Lutz are widely distributed in the Amazon region and are morphologically similar at the larval and pupal stages. Chromosomally, these species are readily distinguished by the position of the nucleolar organizer, which is in the short arm of chromosome I in S. cauchense and in the long arm of chromosomes III in S. quadrifidum. They also differ by three fixed inversions. Sex chromosomes are undifferentiated in both species. Chromosomal resolution of the two species allowed us to evaluate four structural features previously used as diagnostic aids at the larval stage. Characters that distinguish larvae of the two species are the number of branches and branching patterns of the dorsal abdominal setae and the dark band on each primary fan. Branching patterns of the gill histoblasts were often diagnostic, with S. quadrifidum exhibiting more proximal branching and S. cauchense more distal branching. Sites where both species occurred sometimes had larvae with one petiole branching proximally and the other distally; in these cases examination of the chromosomes permitted assignment of the specimen to species. Pigmentation patterns of larvae, on the other hand, are highly variable. Color typically is sex linked in both species. 2020-04-24T16:49:30Z 2020-04-24T16:49:30Z 2005 Artigo https://repositorio.inpa.gov.br/handle/1/14531 10.1590/S0074-02762005000300006 en Volume 100, Número 3, Pags. 249-257 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Memórias do Instituto Oswaldo Cruz |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Chromosome Chromosome Analysis Cytotaxonomy Diagnostic Procedure Fly Gill Insect Larva Morphology Nonhuman Pigmentation Sex Chromosome Sex Linkage Simulium Structure Analysis Diptera Insecta Simuliidae Simulium (genus) Simulium (subgenus) Simulium Cauchense Simulium Quadrifidum |
| spellingShingle |
Chromosome Chromosome Analysis Cytotaxonomy Diagnostic Procedure Fly Gill Insect Larva Morphology Nonhuman Pigmentation Sex Chromosome Sex Linkage Simulium Structure Analysis Diptera Insecta Simuliidae Simulium (genus) Simulium (subgenus) Simulium Cauchense Simulium Quadrifidum Alvan-Aguilar, Miriam Adriana Cytotaxonomy of Simulium cauchense Floch & Abonnenc and Simulium quadrifidum Lutz (Diptera: Simuliidae) in Brazilian Amazonia |
| topic_facet |
Chromosome Chromosome Analysis Cytotaxonomy Diagnostic Procedure Fly Gill Insect Larva Morphology Nonhuman Pigmentation Sex Chromosome Sex Linkage Simulium Structure Analysis Diptera Insecta Simuliidae Simulium (genus) Simulium (subgenus) Simulium Cauchense Simulium Quadrifidum |
| description |
Simulium cauchense Floch & Abonnenc and Simulium quadrifidum Lutz are widely distributed in the Amazon region and are morphologically similar at the larval and pupal stages. Chromosomally, these species are readily distinguished by the position of the nucleolar organizer, which is in the short arm of chromosome I in S. cauchense and in the long arm of chromosomes III in S. quadrifidum. They also differ by three fixed inversions. Sex chromosomes are undifferentiated in both species. Chromosomal resolution of the two species allowed us to evaluate four structural features previously used as diagnostic aids at the larval stage. Characters that distinguish larvae of the two species are the number of branches and branching patterns of the dorsal abdominal setae and the dark band on each primary fan. Branching patterns of the gill histoblasts were often diagnostic, with S. quadrifidum exhibiting more proximal branching and S. cauchense more distal branching. Sites where both species occurred sometimes had larvae with one petiole branching proximally and the other distally; in these cases examination of the chromosomes permitted assignment of the specimen to species. Pigmentation patterns of larvae, on the other hand, are highly variable. Color typically is sex linked in both species. |
| format |
Artigo |
| author |
Alvan-Aguilar, Miriam Adriana |
| author2 |
Hamada, Neusa Adler, Peter H. Luz, Sérgio Luíz Bessa |
| author2Str |
Hamada, Neusa Adler, Peter H. Luz, Sérgio Luíz Bessa |
| title |
Cytotaxonomy of Simulium cauchense Floch & Abonnenc and Simulium quadrifidum Lutz (Diptera: Simuliidae) in Brazilian Amazonia |
| title_short |
Cytotaxonomy of Simulium cauchense Floch & Abonnenc and Simulium quadrifidum Lutz (Diptera: Simuliidae) in Brazilian Amazonia |
| title_full |
Cytotaxonomy of Simulium cauchense Floch & Abonnenc and Simulium quadrifidum Lutz (Diptera: Simuliidae) in Brazilian Amazonia |
| title_fullStr |
Cytotaxonomy of Simulium cauchense Floch & Abonnenc and Simulium quadrifidum Lutz (Diptera: Simuliidae) in Brazilian Amazonia |
| title_full_unstemmed |
Cytotaxonomy of Simulium cauchense Floch & Abonnenc and Simulium quadrifidum Lutz (Diptera: Simuliidae) in Brazilian Amazonia |
| title_sort |
cytotaxonomy of simulium cauchense floch & abonnenc and simulium quadrifidum lutz (diptera: simuliidae) in brazilian amazonia |
| publisher |
Memórias do Instituto Oswaldo Cruz |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/14531 |
| _version_ |
1787142408527413248 |
| score |
11.755432 |