Phoretic association between larvae of Rheotanytarsus (Diptera: Chironomidae) and genera of Odonata in a first-order stream in an area of Atlantic Forest in southeastern Brazil
Zoologia (Curitiba)
; 26(4)2009.
Article
em En
| VETINDEX
| ID: vti-441073
Biblioteca responsável:
BR68.1
ABSTRACT
In this note, the occurrence of phoresy between larvae of Rheotanitarsus sp. (Diptera Chironomidae) and larvae of Heteragrion sp. (Odonata Megapodagrionidae) and of unidentified genera of Calopterygidae (Odonata) collected in a first-order stream in an area of Atlantic Forest in southeastern Brazil is reported. During the dry season of 2007 and the rainy season of 2008, with the aid of a Surber sampler, 15 samples of each of the following mesohabitats were collected litter from riffle areas, litter from pool areas and sediment in pool areas. Eighty-five Odonata larvae were obtained, 10 (11.76%) with cases of phoresy by Rheotanytarsus sp.. These chironomids were associated with only one specimen of Megapodagrionidae, whereas the other larvae were recorded in association with Calopterygidae. Most of the Odonata with cases of phoresy by Rheotanytarsus sp. were recorded in the dry season. In the present study, the absence of the phoretic association with other potential hosts for Rheotanytarsus sp. found in the samples indicates a possible preference of these larvae for Odonata, which accounted for only 2.42% of the collected macroinvertebrates in litter and sediment.
Texto completo:
1
Base de dados:
VETINDEX
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Zoologia (Curitiba)
/
Zoologia (Curitiba, Impr.)
Ano de publicação:
2009
Tipo de documento:
Article