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Oligochaetes (Annelida, Clitellata) in a neotropical stream: a mesohabitat approach Iheringia, Sér. Zool.
Gorni,Guilherme R.; Alves,Roberto da G..
This paper analyses the relationship among mesohabitat and aquatic oligochaete species in the Galharada Stream (Campos do Jordão State Park, state of São Paulo, Brazil). Between August 2005 and May 2006 a total of 192 samples were obtained in areas of four different mesohabitats: riffle leaf litter (RL), pool leaf litter (PL), pool sediment (PS) and interstitial sediment from rocky beds in riffle areas (IS). In the mesohabitats sampled, 2007 specimens were identified, belonging to two families (Naididae and Enchytraeidae). Among the oligochaetes identified Naididae was represented by six genera (Allonais, Chaetogaster, Nais, Pristina, Aulodrilus and Limnodrilus). Principal components analysis (PCA) revealed the first two axes explained 85.1% of the total...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquatic oligochaetes; Community structure; Mountain stream; Campos do Jordão State Park.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000100015
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Naididae (Annelida, Oligochaeta) associated with Pomacea bridgesii (Reeve) (Gastropoda, Ampullaridae) Zoologia
Gorni,Guilherme R.; Alves,Roberto da G..
The family Amplullaridae belongs to this class Gastropoda and is made up of freshwater organisms with a wide geographical distribution in tropical regions. Oligochaeta worms can be found in association with snails of this family, inhabiting the umbilicus of their shells. Due to the lack of information on the ecology of these worms, this work focused on investigating which kind of Oligochaeta species associate with the mollusk Pomacea bridgesii (Reeve, 1856). Samples were collected during winter and spring 2003 and summer 2004. From a total of 209 snails collected, the presence of Oligochaeta worms was observed in only 58 of them (27.75%). In these infected snails, 89 Oligochaeta worms were found, all belonging to the family Naididae. The species Haemonais...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Associated fauna; Mollusks; Oligochaete worms; Seasonal periods.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000400011
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