Artículos de revistas
Morphological-behavioral adaptations of two benthic invertebrate species to face strong bed hydrodynamic forces in a large South-American river
Fecha
2014-06Registro en:
Amsler, Mario Luis; Ezcurra, Ines Delia; Eberle Folmer, Eliana Gisel; Bullo Rodrigo, Juan Manuel; Blettler, Martin Cesar Maria; Morphological-behavioral adaptations of two benthic invertebrate species to face strong bed hydrodynamic forces in a large South-American river; Elsevier; Ecohydrology & Hydrobiology; 14; 2; 6-2014; 152-156
1642-3593
CONICET Digital
CONICET
Autor
Blettler, Martin Cesar Maria
Eberle Folmer, Eliana Gisel
Bullo Rodrigo, Juan Manuel
Ezcurra, Ines Delia
Amsler, Mario Luis
Resumen
This scientific communication describes and discusses morphological–behavioral adaptations to flow of two benthic invertebrate species to survive in highly turbulent habitats of the large Paraguay River (Argentina – Paraguay). It is based on field and laboratory observations under microscope made during the performance of usual researches. In this sense, we found that Djalmabatista sp. 1 (Chironomidae, Tanypodinae) ballasts its body by ingestion of fine sediment grains which storage into a dorsal bulge, herein called “dorsal bag”. This specie would have the ability to take or release these grains according to the surrounding hydrodynamic conditions. Otherwise, the juvenile stage of Limnoperna fortunei (Bivalvia, Mytilidae) also ballasts its body but attaching sand grains through the byssal threads.