Morphobiological aspects of Rhodnius brethesi Matta, 1919 ( Hemiptera:Reduviidae ) from the Upper and Middle Negro River, Amazon region of Brazil: I - scanning electron microscopy
Mem. Inst. Oswaldo Cruz
;
100(8): 915-923, Dec. 2005. ilus, mapas
Article
in English
| LILACS
| ID: lil-419960
RESUMO
The occurrence of autochthonous cases of Chagas disease in the Amazon region of Brazil over recent decades has motivated an intensification of studies in this area. Different species of triatomines have been identified, and ten of these have be proven to be carriers of the parasite Trypanosoma cruzi or " cruzi-like " parasites. Studies conducted in the municipalities of Santa Isabel do Rio Negro and Barcelos, located on the Upper and Middle of the Negro River, microregion of Negro River, state of Amazonas have confirmed not only that Rhodnius brethesi is present in the palm tree Leopoldinia piassaba, but also that this insect was recognized by palm fiber collectors. A morphological study of eyes, inter-ocular and inter-ocellar regions, antennae, buccula, labrum, rostrum, stridulatory sulcus and feet, including the apex of the tibia, spongy fossette and ctenidium was conducted by scanning electron microscopy. The buccula and the stridulatory sulcus presented notable differences in specimens of different genera and also of different species. These data make it possible to suggest that the details presented in these structures can be included as diagnostic characteristics to be used in new dichotomous keys, thereby contributing towards studies of taxonomy and systematics and furnishing backing for comparative analysis of specimens collected from different localities.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Rhodnius
/
Insect Vectors
Type of study:
Prognostic study
Limits:
Animals
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2005
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Fiocruz/BR
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