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Macroinvertebrates associated with Limnoperna fortunei (Dunker, 1857) (Bivalvia, Mytilidae) in Río de la Plata, Argentina
The species richness and abundance of different taxa of macroinvertebrates, except mollusks was positively related to the presence and density of L.fortunei, and autochthonous gastropod species conversely, tended to be displaced. Expand
Biodiversity and ecology of Hirudinea (Annelida) from the Natural Reserve of Isla Martín García, Río de la Plata, Argentina.
Leech biodiversity from the water bodies of Martín García Island, shows a great diversity of species and a wide plasticity regarding the characteristics of the environmental factors considered. Expand
Occurrence of Hirudinea species in a post urban reach of a Patagonian mountain stream
Although several species of Helobdella were able to live in the disturbed section of the stream, only H. simplex and H. hyalina sustained large populations at the site and can be considered as tolerant to organic enrichment. Expand
Assessing the sensitivity of leeches as indicators of water quality.
Assessing the sensitivity of leeches to several water quality attributes in lowlands streams uses occupancy modelling that account explicitly for detectability, and offers a new methodology to understand how the species behave along a stressor gradient. Expand
Oogenesis of Helobdella ampullariae (Hirudinida, Glossiphoniidae)
The knowledge of the gametogenesis in Hirudinida is an important tool that allows the understanding of the reproductive cycle. Ovogenesis of Helobdella ampullariae was described based on 30 leechesExpand
A new leech species of Helobdella (Hirudinea, Glossiphoniidae) from San Carlos de Bariloche, Río Negro, Argentina
A new freshwater leech species Helobdella fantasmae n. sp. is described. This description is based on the examination of 12 specimens collected in Laguna Fantasma, Bariloche (41o 05'S 71o 28'W),Expand
A new species of Helobdella (Hirudinida: Glossiphoniidae) from Oregon, USA.
The new species has pale yellow/buff coloration with scattered chromatophore blotches throughout the dorsal surface, lateral extensions or papillae only on the a2 annulus, dorsal medial row of papillAE with small papilla on al and larger papillai on a2 and a3, and a small oval scute (rarely triangular). Expand
New Species of Apolocystis (Aseptatorina: Monocystidae) from the Coelom of Microscolex dubius (Oligochaeta: Acantodrillidae) in Los Talas, Buenos Aires, Argentina
These parasites differ from previously described species of Apolocystis in having a larger size range, especially smaller forms in all life cycle stages, and many more sporocysts within the gametocysts. Expand
First record of Helobdella hyalina (Hirudinea; Glossiphoniidae) in the mantle cavity of Planorbidae from lentic environments in a Buenos Aires province, Argentina.
Zoología Invertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Investigador Comisión de Investigaciones Científicas of the Provincia of Buenos Aires, Paseo del Bosque. Expand
Helobdella nahuelhuapensis sp. nov. (Hirudinea, Glossiphoniidae), from Bariloche, Argentina
The new freshwater leech species Helobdella nahuelhuapensis is described based on the examination of 17 specimens collected near Nahuel Huapi Lake, Bariloche, Argentina with following diagnosticExpand