Aquatic Oligochaeta (Annelida: Clitellata) in wetlands and irrigated rice fields in the state of Rio Grande do Sul (Southern Brazil)
Pires, M.M.; Secretti, E.; Gorni, G.R.; de Oliveira Sanches, N.A.; Kotzian, C.B. (2021). Aquatic Oligochaeta (Annelida: Clitellata) in wetlands and irrigated rice fields in the state of Rio Grande do Sul (Southern Brazil). Iheringia, Sér. zool. (Impr.) 111. https://dx.doi.org/10.1590/1678-4766e2021031
In: Iheringia. Série Zoologia. Fundação Zoobotânica do Rio Grande do Sul: Porto Alegre. ISSN 0073-4721; e-ISSN 1678-4766, more
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| Keywords |
Oligochaeta [WoRMS]
Fresh water |
| Author keywords |
Agroecosystems; freshwater biodiversity; oligochaetes; paddies; wetlands |
| Authors | | Top |
- Pires, M.M.
- Secretti, E.
- Gorni, G.R.
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- de Oliveira Sanches, N.A.
- Kotzian, C.B.
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| Abstract |
The knowledge of the diversity and distribution of aquatic Oligochaeta (Annelida: Clitellata) species is scarce in southern Brazil. This study presents a list of the species of aquatic Oligochaeta in wetlands and irrigated rice fields in the state of Rio Grande do Sul. Collections were carried out in two large wetland remnants and seven irrigated rice fields distributed in three regions across the state. We recorded eight species from two families (Alluroididae and Naididae). We expanded the distribution ranges of two species (Brinkhurstia americana and Stylaria lacustris), which represent new records for the state of Rio Grande do Sul and registered their occurrence in non-documented environments. In specific, the present study increases to 24 species the aquatic Oligochaeta diversity for the state of Rio Grande do Sul. In addition, the spatial distribution of the species recorded suggests that rice fields support a subset of the wetland fauna of aquatic Oligochaeta. The results provide important information on the ecology and distribution of limnic Oligochaeta and are useful to inform on the diversity of this fauna in agroecosystems. |
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