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 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.

• Publication year

  2005

• Venue

  Memórias do Instituto Oswaldo Cruz

• Publication date

  2005-05-01

• Fields of study

  Biology, Medicine, Environmental Science

• Identifiers
  DOI 10.1590/S0074-02762005000300006PMID 16113863
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

• Black flies (Diptera: Simuliidae) of the Gran Sabana (Venezuela) and Pacaraima Region (Brazil): Distributional data and identification keys for larvae and pupae

  2007cited by this paper
• The Black Flies (Simuliidae) of North America

  2004cited by this paper
• Description of Simulium damascenoi (Diptera: Simuliidae) male and the black-fly species from the State of Amapá, Brazil.

  2003cited by this paper
• Cytotaxonomy of Simulium goeldii Cerqueira & Nunes De Mello and Simulium ulyssesi (Py-Daniel & Coscarón) (Diptera: Simuliidae) in Central Amazonia, Brazil

  2002cited by this paper
• Species richness and spatial distribution of blackflies (Diptera: Simuliidae) in streams of Central Amazonia, Brazil

  2002cited by this paper
• Chromosomal comparisons among and within populations of Simulium (Chirostilbia) pertinax (Diptera, Simuliidae).

  2001cited by this paper
• Stomach content analyses of Simulium perflavum Roubaud 1906 (Diptera: Simuliidae) larvae from streams in Central Amazônia, Brazil.

  2001cited by this paper
• Bionomia e chave para imaturos e adultos de Simulium (Diptera: Simuliidae) na Amazônia Central, Brasil

  2001cited by this paper
• Cytotaxonomy of four species in the Simulium perflavum species group (Diptera: Simuliidae) from Brazilian Amazonia

  1999cited by this paper
• Biosystematic studies on the Simuliidae (Diptera) of the Amazonia onchocerciasis focus

  1997cited by this paper
• Four new cytotypes of the onchocerciasis vector blackfly Simulium guianense in Brazil

  1996cited by this paper
• A new taxonomic and geographical inventory of world blackflies (Diptera: Simuliidae).

  1996influential reference
• A cytogenetic analysis of the Simulium ochraceum species complex (Diptera: Simuliidae) in Central America.

  1994cited by this paper
• Identification of members of the Simulium ochraceum species complex in the three onchocerciasis foci in Mexico

  1992cited by this paper
• Spatial distribution patterns of larval cytotypes of the Simulium venustum/verecundum complex (Diptera: Simuliidae) on the Avalon Peninsula, Newfoundland: factors associated with cytotype abundance and composition

  1992cited by this paper
• The Simulium metallicum species complex (Diptera: Simuliidae) in Latin America: a cytological study

  1989cited by this paper
• El Género Simulium Latreille en la Región Neotropical: Análisis de los Grupos Supraespecíficos, Especies que los Integran y Distribución Geográfica (Simuliidae, Diptera)

  1987cited by this paper
• Caracterizaçação de dois novos subgêneros em Simuliidae (Diptera: Culicomorpha) neotropical

  1983cited by this paper
• A cytological description of sibling species of Simulium venustum and S. verecundum with standard maps for the subgenus Simulium Davies (Diptera)

  1978cited by this paper
• THE SALIVARY GLAND CHROMOSOMES OF THE BLACK FLY SIMULIUM VITTATUM ZETT.

  1953cited by this paper

• Estimating Diversity of Black Flies in the Simulium ignescens and Simulium tunja Complexes in Colombia: Chromosomal Rearrangements as the Core of Integrative Taxonomy

  2017cites this paper
• Taxonomy and polytene chromosomes of the Neotropical black fly Simulium perplexum (Diptera: Simuliidae).

  2017cites this paper
• Cytotaxonomy of the Simuliidae (Diptera): a systematic and bibliographic conspectus.

  2015cites this paper
• Seasonal and Spatial Distributions of Black Fly Larvae (Diptera: Simuliidae) in Two Lake Outlet Streams of the Mauricie Region of Québec, and Species Survey in Parts of Southern Québec Territory

  2011cites this paper
• Citotaxonomia de Simulium (Thyrsopelma) hirtipupa Lutz, 1910 (Diptera: Simuliidae).

  2007cites this paper