https://socictopen.socict.org/index.php/items/show/21267
title: First record and ecological features of Goeldichironomus petiolicola (Diptera: Chironomidae) mining Eichhornia crassipes in the Middle Paraná River floodplain, Argentina Primer registro y aspectos ecológicos de Goeldichironomus petiolicola (Diptera: Chironomidae) minador de Eichhornia crassipes en la llanura aluvial del río Paraná Medio, Argentina
subject: Chironomidae, Eichhornia crassipes miner, Humedales, Minador de Eichhornia crassipes, ecología larval, larval ecology, wetlands
description: The first records from Argentina of larvae of Goeldichironomus petiolicola Trivinho-Strixino & Strixino mining in Eichhornia crassipes (Martius) Solms petioles in wetlands of the Paraná River floodplain were analyzed. G petiolicola larvae and pupae were collected seasonally during 2005 from stands of E. crassipes and bottom sediment samples in floodplain habitats. Larvae inside E. crassipes petioles were reared with the purpose of obtaining their complete life cycle. G. petiolicola was the most abundant chironomid species living inside E. crassipes petioles; the III and IV instar larvae and pupae were found during all the seasons while the I and II instar larvae were not found. The highest average densities of G. petiolicola larvae inside the E. crassipes petioles were recorded in Autumn-Winter (588.5 ind.kg-1 dw - 778.7 ind.kg-1 dw). This suggests that they have better conditions for survival, allowing the individuals to develop more slowly until the next flooded period with higher temperatures. The r (Dyar) value obtained was 1.66. We conclude that G. petiolicola mines into E. crassipes petioles mainly when the plants begin their senescence process and does not cause important damage to them.Se presenta el primer registro para Argentina de Goeldichironomus petiolicola Trivinho-Strixino & Strixino, especie cuyos estadios inmaduros minan dentro de los pecíolos de Eichhornia crassipes (Martius) Solms, en humedales del río Paraná Medio. Las larvas y pupas de G petiolicola fueron recolectadas estacionalmente durante 2005, de los stands de E. crassipes y en muestras de sedimento en diferentes ambientes de la llanura. Ejemplares de la especie fueron criados en laboratorio a fin de completar su ciclo de vida. G petiolicola fue el quironómido más abundante que habita en el interior de los pecíolos de E. crassipes, se registraron los estadios de larva III y IV y pupa durante todas las estaciones. No fueron registrados los estadios larvales I y II. Las mayores densidades med…
creator: Luciana Montalto, Soledad Capello, Analía C. Paggi
source: Revista de la Sociedad Entomológica Argentina
publisher: Sociedad Entomológica Argentina
date: 2012
relation: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802012000100013
coverage: Zoology