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Journal articles on the topic 'Oligochaeta'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

WETZEL, MARK J. "Citations for the published proceedings of our 14 International Symposia on Aquatic Oligochaetes (1979–2018)." Zoosymposia 17, no. 1 (2020): 188–89. http://dx.doi.org/10.11646/zoosymposia.17.1.15.

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These special publications, below, present overviews of and papers presented during our triennial international symposia on aquatic oligochaete biology. Three similar names for our symposia have been used since we began as a group in 1979: International Symposium on Aquatic Oligochaete Biology (ISAOB), International Symposium on Aquatic Oligochaetes (ISAO), and International Symposium on Aquatic Oligochaeta (ISAO).

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2

Atanackovic, Ana, Katarina Zoric, Jelena Tomovic, Bozica Vasiljevic, and Momir Paunovic. "Distributional patterns of aquatic Oligochaeta communities (Annelida: Clitellata) in running waters in Serbia." Archives of Biological Sciences 72, no. 3 (2020): 359–72. http://dx.doi.org/10.2298/abs200303030a.

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The study of aquatic Oligochaeta in freshwaters in Serbia contributes to the oligochaete fauna inventory of the Balkans. Based on our results and literature review, 97 species (45 genera from 8 families) are listed in the running waters of Serbia. From the list of 61 species recorded during our investigation, 12 were noted for the first time. The ecological analysis of Oligochaeta communities showed the largest participation of potamal and rhithral species. As regards current preferences, rheolimnophilous species predominated, and with respect to feeding type, collectors prevailed. Most of the

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3

Corbi, Juliano José, Mário A. Jancso, Susana Trivinho Strixino, and Evelise N. Fragoso. "Occurence of oligochaeta living on larvae of odonata from ipeúna (São Paulo state, Brazil)." Biota Neotropica 4, no. 2 (2004): 1–3. http://dx.doi.org/10.1590/s1676-06032004000200017.

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The occurrence of oligochaetes species living on larvae of Odonata is reported for the first time. There were found Nais variabilis (Piguet, 1906) (Oligochaeta: Naididae) and Chaetogaster diastrophus (Gruithuisen, 1828) (Oligochaeta: Naididae) living on Elasmothemis cannacrioides (Calvert, 1906) (Anisoptera: Libellulidae) and on Mnesarete (Cowley, 1934) (Zygoptera: Calopterygidae).

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4

Brinkhurst, R. O., and D. McKey-Fender. "The anatomy of the pharynx of two predatory aquatic oligochaetes." Canadian Journal of Zoology 69, no. 3 (1991): 669–75. http://dx.doi.org/10.1139/z91-098.

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The genera Haplotaxis (Haplotaxidae) and Phagodrilus (Lumbriculidae) have convergent modifications of the pharynx that are adaptations for ingesting prey, especially other oligochaetes. Neither these taxa nor the predatory lumbriculid Agriodrilus (which is not closely related to Phagodrilus within that family) need be considered to be directly related to the leeches or branchiobdellidans simply because of these modifications. The commensal and predatory life style has evolved quite independently in several oligochaetes. Haplotaxis does not have a furrow across the prostomium as previously desc

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5

ŠUNDIĆ, DANIJELA, BRANKO M. RADUJKOVIĆ, and JASMINA KRPO-ĆETKOVIĆ. "Catalogue of Naidinae and Pristininae (Annelida: Oligochaeta: Naididae) with twenty species new for Montenegro." Zootaxa 2737, no. 1 (2011): 1. http://dx.doi.org/10.11646/zootaxa.2737.1.1.

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The Oligochaeta occurring in Montenegrin freshwaters were studied in order to contribute to a better knowledge of this group in the region. The oligochaetes from rivers, lakes, reservoirs, creeks, and springs, belonging to the Black Sea and the Adriatic Sea drainage basins, were investigated. Samples of sediments were taken from 54 sampling sites during three years of research (2005–2008). We confirmed the presence of formerly reported species and found 20 species new for the Montenegrin oligochaete fauna: Chaetogaster cristallinus, C. diaphanus, C. langi, C. setosus, Nais behningi, N. bretsch

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ARSLAN, NAIME, DENIZ KARA, CANSEV AKKAN KÖKÇÜ, and MELIH RÜZGAR. "Aquatic Oligochaeta (Annelida) of Dam Lakes Çatören and Kunduzlar (Turkey) ." Zoosymposia 9, no. 1 (2014): 70–76. http://dx.doi.org/10.11646/zoosymposia.9.1.12.

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Çatören and Kunduzlar Dam Lakes, located on Seydi River, represent the main irrigation water resources of the Seyitgazi District (Eskişehir Province), in west-central Turkey. The river and the reservoirs are both under the threat of pollution primarily originating from several domestic point source discharges and land-based runoff. The numerical and proportional distributions of oligochaetes in Çatören and Kunduzlar Dam Lakes were surveyed seasonally in 2010 and 2011 at two stations on each lake. According to the results of this study, the benthic invertebrate fauna of Çatören Dam Lake consist

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7

Atanacković, Ana, Nataša Popović, Nikola Marinković, et al. "Effects of Environmental Factors on the Distribution and Diversity of Aquatic Oligochaetes." Water 15, no. 22 (2023): 3873. http://dx.doi.org/10.3390/w15223873.

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The aim of our study was to detect the actual distribution of oligochaete species and to identify their ecological differentiation with respect to environmental factors: altitude, temperature, oxygen concentration, conductivity, total organic carbon, and waterbody type. Although widespread, differentiation of oligochaete communities in four waterbody types and altitudinal groups can be observed through alpha and beta diversity. Their differences were analyzed using MANOVA, while the ecological preferences of species were presented with logistic Gaussian regression analyses. The highest number

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8

SCHMELZ, RÜDIGER M., CHRISTER ERSÉUS, PATRICK MARTIN, TON VAN HAAREN, and TARMO TIMM. "A proposed order-level classification in Oligochaeta (Annelida, Clitellata)." Zootaxa 5040, no. 4 (2021): 589–91. http://dx.doi.org/10.11646/zootaxa.5040.4.9.

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The purpose of our contribution is to propose a robust and practical order-level classification of the families of Oligochaeta, that is, non-leech Clitellata. The order level is mandatory in Linnaean rank-based classification and is also required in many internet-based biodiversity databases. However, it has received little attention in oligochaete systematics, and the few available order-level classifications of Oligochaeta no longer represent phylogenetic relationships adequately. Our proposal is based on corroborated molecular phylogenetic evidence and takes as benchmarks class level for Cl

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9

Dias, Roberto Júnio Pedroso, Adalgisa Fernanda Cabral, Renato Tavares Martins, et al. "Occurrence of peritrich ciliates on the limnic oligochaete Limnodrilus hoffmeisteri (Oligochaeta, Tubificidae) in the neotropics." Journal of Natural History 43, no. 1-2 (2009): 1–15. https://doi.org/10.1080/00222930802478644.

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Dias, Roberto Júnio Pedroso, Cabral, Adalgisa Fernanda, Martins, Renato Tavares, Stephan, Nilo Nélio C., Silva-Neto, Inácio Domingos da, Alves, Roberto da Gama, D, Marta, Agosto (2009): Occurrence of peritrich ciliates on the limnic oligochaete Limnodrilus hoffmeisteri (Oligochaeta, Tubificidae) in the neotropics. Journal of Natural History 43 (1-2): 1-15, DOI: 10.1080/00222930802478644, URL: http://dx.doi.org/10.1080/00222930802478644

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Tsai, Chu-Fa, Huei-Ping Shen, Su-Chen Tsai, and Hsun-Huang Lee. "Four new species of terrestrial earthworms belonging to the genus Amynthas (Megascolecidae: Oligochaeta) from Taiwan with discussion on speculative synonyms and species delimitation in oligochaete taxonomy." Journal of Natural History 41, no. 5-8 (2007): 357–79. https://doi.org/10.1080/00222930701201279.

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Tsai, Chu-Fa, Shen, Huei-Ping, Tsai, Su-Chen, Lee, Hsun-Huang (2007): Four new species of terrestrial earthworms belonging to the genus Amynthas (Megascolecidae: Oligochaeta) from Taiwan with discussion on speculative synonyms and species delimitation in oligochaete taxonomy. Journal of Natural History 41 (5-8): 357-379, DOI: 10.1080/00222930701201279, URL: http://dx.doi.org/10.1080/00222930701201279

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11

Lee, Jeounghee. "Report on Eight Unrecorded Species of Freshwater Oligochaetes in Korea." Taxonomy 5, no. 1 (2025): 9. https://doi.org/10.3390/taxonomy5010009.

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Freshwater oligochaetes, belonging to the class Oligochaeta, are vital components of aquatic ecosystems globally, contributing significantly to nutrient cycling, sediment dynamics, and overall ecosystem function. Despite their ecological importance, freshwater oligochaetes in Korea remain relatively understudied compared to other aquatic organisms. This study aimed to enhance our understanding of the diversity and ecological roles of freshwater oligochaetes in Korean aquatic ecosystems. We identified nine species across six genera and two subfamilies from samples collected from various freshwa

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12

PINDER, ADRIAN, MARK WETZEL, and NAIME ARSLAN. "Preface: 12th International Symposium on Aquatic Oligochaeta." Zoosymposia 9, no. 1 (2014): 4–5. http://dx.doi.org/10.11646/zoosymposia.9.1.3.

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This volume is the proceedings for the 12th International Symposium on Aquatic Oligochaeta (ISAO), held inFremantle Western Australia from the 10th to the 13th of September 2012. This was the latest in a series oftriennial symposia that began in May 1979 when 31 researchers met for four days in Sidney, BritishColumbia, Canada, hosted by Ralph Brinkhurst, then of the Institute of Ocean Sciences who has played apivotal role in the field of oligochaete research for many decades. That first meeting set the scene for regularcollegiate gatherings of oligochaetologists that have spawned many collabor

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PINDER, ADRIAN, NAIME ARSLAN, and MARK WETZEL. "Proceedings of the 12th International Symposium on Aquatic Oligochaeta." Zoosymposia 9, no. 1 (2014): 1–2. http://dx.doi.org/10.11646/zoosymposia.9.1.1.

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This volume is the proceedings for the 12th International Symposium on Aquatic Oligochaeta (ISAO), held in Fremantle Western Australia from the 10th to the 13th of September 2012. This was the latest in a series of triennial symposia that began in May 1979 when 31 researchers met for four days in Sidney, British Columbia, Canada, hosted by Ralph Brinkhurst, then of the Institute of Ocean Sciences who has played a pivotal role in the field of oligochaete research for many decades. That first meeting set the scene for regular collegiate gatherings of oligochaetologists that have spawned many col

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Ohtaka, Akifumi, Yoyok Sudarso, and Linda Wulandari. "RECORDS OF TEN FRESHWATER OLIGOCHAETE SPECIES (ANNELIDA, CLITELLATA) FROM SUMATRA, JAVA AND KALIMANTAN, INDONESIA." TREUBIA 34 (December 30, 2006): 37–57. https://doi.org/10.14203/treubia.v34i0.462.

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Descriptions and taxonomic remarks are provided for ten species offreshwater oligochaetes (Annelida, Clitellata) from Sumatra, Java and Kalimantan, Indonesia. They include six naidines (Slavina appendiculata, Dero pectinata, Aulophorus hymanae, Branchiodrilus semperi, Pristina amphibiotica and P. osborni) and two tubificines (Limnodrilus claparedianus and L. grandisetosus) new to Indonesia. Enlarged ventral chaetae were described as an infraspecific variation in Pristina biserrata.Keywords: Clitellata, Oligochaeta, Naidinae, Tubificinae, taxonomy, new records, Indonesia

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15

Rodríguez, P. "Benthic and subterranean aquatic oligochaete fauna (Annelida, Oligochaeta) from Coiba Island (Panamá) and Cuba." Graellsia 58, no. 2 (2002): 3–19. http://dx.doi.org/10.3989/graellsia.2002.v58.i2.275.

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16

Ramadhanti, Galuh. "Identification and Description of Aquatic Oligochaeta in Sanggau City Canal West Kalimantan." bionature 24, no. 1 (2023): 199. http://dx.doi.org/10.35580/bionature.v24i1.43532.

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The canals in the center of Sanggau City, West Kalimantan serve as a medium for wastewater which enters the Kapuas River. The density of community activities in this city has caused indications of its canals being polluted by organic and inorganic materials. These contaminants enter the canal continuously, hence its accumulation can change the texture of the substrate/sediment which is the habitat for aquatic Oligochaete. The purpose of this study was to identify and describe the types of aquatic Oligochaete in the canals of Sanggau City. The research was conducted from August to September 202

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17

Al-Abbad, M. Y. M. "Addition of four new records of Naidid (Oligochaeta) to the Iraqi fauna." Mesopotamian Journal of Marine Sciences 29, no. 2 (2022): 137–44. http://dx.doi.org/10.58629/mjms.v29i2.131.

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The present study is concerned with the new records of oligochaete species to the Iraqi fauna. The oligochaete specimens were collected from shallow water of six sites on the bank of Shatt Al-Arab river, southern Iraq, during the period from March to August 2011. These oligochaetes were isolated from the surface layer of sediment and submerged plants. The species are Dero cooperi Stephenson, 1932, Dero sawayai Marcus, 1943, Pristinella idrensis (Sperber, 1948), and Pristinella notopora (Cernosvitov, 1937), they were recorded for the first time from Iraq. Measurements and the most important dia

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18

Real, M., N. Prat, and J. L. Riera. "Abundance and Distribution of Profundal Zoobenthos in Spanish Reservoirs: Differences between 1973/75 and 1987/88 Surveys." Water Science and Technology 28, no. 6 (1993): 45–53. http://dx.doi.org/10.2166/wst.1993.0128.

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This paper deals with the abundance and distribution patterns of profundal zoobenthos from 81 Spanish reservoirs which were sampled during mixing and stratification periods in 1973/75 and again in 1987/88. Our main aims are to explore the regional variability and to compare these two surveys, separated by 14 years. The densities of three major benthic groups were considered: Oligochaeta, Tanypodinae and other Chironomidae (basically Chironominae with some Orthocladiinae). While differences between reservoirs were highly significant for all three groups, differences between basins were only ref

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Frizzera, Gabriela Linhares, and Roberto da Gama Alves. "The influence of taxonomic resolution of Oligochaeta on the evaluation of water quality in an urban stream in Minas Gerais, Brazil." Acta Limnologica Brasiliensia 24, no. 4 (2013): 408–16. http://dx.doi.org/10.1590/s2179-975x2013005000005.

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OBJECTIVE: The objective of this study was to verify the identification of specimens of the Oligochaeta in different taxonomic levels (family and species) has the same potential for assessing the water quality of an urban stream in Minas Gerais, Brazil. METHODS: Oligochaeta specimens were collected from eight sampling stations in July 2007. Four stations were located in rural areas and the other four in urban areas. Were measured concentrations of dissolved oxygen, phosphorus and total nitrogen, pH, electrical conductivity and BOD. To evaluate the influence of taxonomic level, Oligochaeta spec

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Gorni, Guilherme Rossi, and Roberto da Gama Alves. "Naididae (Annelida, Oligochaeta) associated with briophytes in Brotas, State of São Paulo, Brazil." Revista Brasileira de Zoologia 24, no. 2 (2007): 518–19. http://dx.doi.org/10.1590/s0101-81752007000200036.

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Mosses and liverworts can be colonized by various invertebrates, including fresh water oligochaete worms. However, little information is available on the habits and habitats of this oligochaetes in Brazil. Therefore, the present study was undertaken to examine the occurrence of naidids in mosses, as well as to broaden the knowledge about the habitats of these oligochaetes. Sampling of bryophytes adhered to rock substrates in the rapids of the Jacaré Pepira River (municipality of Brotas, São Paulo, Brazil) and to a vertical rock wall of a waterfall near the river revealed 191 Naididae individua

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Obaid, Zahraa Hussein. "A Study of Some Aquatic Oligochaetes Community in Shatt Al-Hillah/ Middle of Iraq." IOP Conference Series: Earth and Environmental Science 1088, no. 1 (2022): 012007. http://dx.doi.org/10.1088/1755-1315/1088/1/012007.

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Abstract The current study discusses the spatial distribution of Oligochaete communities on Shatt Al-Hillah. Monthly samples of Oligochaete worms were gathered from four locations along the Shatt Al-Hillah in the middle of Iraq, between September 2019 and May 2020. show the study for the existence of521Individual aquatic Oligochaeta belong to 7 species from the Naididae and Lumriculdae subfamilies, as well as the Pristinae subfamily, and in Site S3 had the largest number of worms, with 180 worms from 7 species being detected, while in Site S2 had the least number of worms, 107 from 5 species.

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Cortelezzi, Agustina, Laura Cecilia Armendáriz, María Vanesa López van Oosterom, Rosana Cepeda, and Alberto Rodrigues Capítulo. "Different levels of taxonomic resolution in bioassessment: a case study of oligochaeta in lowland streams." Acta Limnologica Brasiliensia 23, no. 4 (2012): 412–25. http://dx.doi.org/10.1590/s2179-975x2012005000020.

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AIM: This study evaluated the use of oligochaetes at different levels of taxonomic resolution as environmental indicators in Argentine lowland streams affected by different land uses. METHODS: Sampling sites were grouped based on the physicochemical and habitat characteristics (low-, moderate-, and high-impact disturbance). Collection of the oligochaetes samples was carried out seasonally in sediment and vegetation habitats. RESULTS: The increases in nutrients and organic matter produced elevated densities of the Oligochaeta, but when the disturbance also involved changes in the physical habit

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23

Behrend, RDL, SEP Fernandes, DS Fujita, and AM Takeda. "Eight years of monitoring aquatic Oligochaeta from the Baía and Ivinhema Rivers." Brazilian Journal of Biology 69, no. 2 suppl (2009): 559–71. http://dx.doi.org/10.1590/s1519-69842009000300011.

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The aim of this study was to analyze the factors that influence spatial and temporal variations of the Oligochaeta assemblage in the Baía and Ivinhema Rivers, located in the Upper Paraná River floodplain (Mato Grosso do Sul State, Brazil). Samples of Oligochaeta were collected between February 2000 and November 2007. A total of 27 Oligochaeta species were identified. A Principal Component Analysis (PCA) of the physical and chemical variables was used to summarize the total variation in the data and to identify major environmental gradients. Detrended Correspondence Analysis (DCA) was conducted

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Ragonha, FH, DK Petsch, GHZ Alves, HS Santana, TS Michelan, and AM Takeda. "Tributaries as richness source for Oligochaeta assemblage (Annelida) of Neotropical dammed river." Brazilian Journal of Biology 74, no. 4 (2014): 861–69. http://dx.doi.org/10.1590/1519-6984.05613.

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Tributaries may serve as richness source for the river main channel and the zoobenthos community is a good tool to verify this kind of pattern. In this study, we aimed to characterize the benthic invertebrate assemblage in three tributaries associated to the Paraná River main channel, focusing in Oligochaeta community. We hypothesized that (i) in tributaries, Oligochaeta are richer than the main river (Paraná River) and (ii) dammed tributary (Paranapanema River) is poorly diverse than the others. Samples were conducted in Paranapanema, Baía and Ivinhema tributaries using a modified Petersen gr

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Graney, R. L., T. J. Keilty, and J. P. Giesy. "Free Amino Acid Pools of Five Species of Freshwater Oligochaetes." Canadian Journal of Fisheries and Aquatic Sciences 43, no. 3 (1986): 600–607. http://dx.doi.org/10.1139/f86-071.

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The concentrations of free amino acids (FAA) were measured in five species of freshwater Oligochaeta (Limnodrilus hoffmeisteri, Tubifex tubifex, Potamothrix moldaviensis, Potamothrix vejdovskyi, and Stylodrilus heringianus) collected from southeastern Lake Michigan. Alanine represented between 23.1 and 41.8% of the total FAA pool and was the most abundant amino acid in all species. Leucine, valine, and glutamic acid were, respectively, the next most abundant and had similar relative concentrations in all species except T. tubifex. In T. tubifex, glutamic acid, asparagine, and aspartate were th

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MORRIS, D. J., R. S. TERRY, K. B. FERGUSON, J. E. SMITH, and A. ADAMS. "Ultrastructural and molecular characterization of Bacillidium vesiculoformis n. sp. (Microspora: Mrazekiidae) in the freshwater oligochaete Nais simplex (Oligochaeta: Naididae)." Parasitology 130, no. 1 (2004): 31–40. http://dx.doi.org/10.1017/s0031182004006286.

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The development of a new species, Bacillidium vesiculoformis n. sp. (Microspora, Mrazekiidae), is described from the freshwater oligochaete Nais simplex (Oligochaeta, Naididae). Initial stages of parasite development consist of a monokaryotic merogony within a haemocyte of the intestinal blood sinus. The resulting hypertrophied haemocyte is attached to the chloragocytes of the sinus by fine cytoplasmic extensions with the sinus around the cell becoming greatly enlarged. The meronts within the haemocyte form diplokaryotic sporonts that undergo sporogenesis directly within the cytoplasm of the h

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Behrend, RDL, AM Takeda, LC Gomes, and SEP Fernandes. "Using oligochaeta assemblages as an indicator of environmental changes." Brazilian Journal of Biology 72, no. 4 (2012): 873–84. http://dx.doi.org/10.1590/s1519-69842012000500014.

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We designed a field survey (the entire river length; not dammed: First and Second plateaus; dammed: Third Plateau) to test the hypothesis that the cascade of reservoirs promoted a reduction in species richness and changed the composition of Oligochaeta assemblage along the Iguaçu River. Changes in environmental variables and in richness and composition of Oligochaeta were summarized by Canonic Correspondence Analysis. Along the Iguaçu River, conductivity, and altitude decreased, whereas temperature increased. Oligochaeta composition showed a significant spatial variation, with higher abundance

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SCHENKOVÁ, JANA, PETR PAŘIL, KARLA PETŘIVALSKÁ, and JINDŘIŠKA BOJKOVÁ. "Aquatic oligochaetes (Annelida: Clitellata) of the Czech Republic: check-list, new records, and ecological remarks." Zootaxa 2676, no. 1 (2010): 29. http://dx.doi.org/10.11646/zootaxa.2676.1.2.

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This study contributes to the knowledge of central European clitellates by creating a check-list of Oligochaeta (sensu oligochaetous Clitellata; Erséus 2005) of the Czech Republic, exclusive of taxa in the family Enchytraeidae. In total, 95 aquatic oligochaete species representing 43 genera are reported for the Czech Republic. Rare species are highlighted and associated with the categories for threatened species as outlined by the International Union for the Conservation of Nature. The first records of Trichodrilus strandi Hrabě, 1936, Pristina jenkinae (Stephenson, 1931), Pristina osborni (Wa

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Shen, Huei-Ping, Chih-Han Chang, and Wen-Jay Chih. "Earthworms from Matsu, Taiwan with descriptions of new species of the genera Amynthas (Oligochaeta: Megascolecidae) and Drawida (Oligochaeta: Moniligastridae)." Zootaxa 3973, no. 3 (2015): 425–50. https://doi.org/10.11646/zootaxa.3973.3.2.

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Shen, Huei-Ping, Chang, Chih-Han, Chih, Wen-Jay (2015): Earthworms from Matsu, Taiwan with descriptions of new species of the genera Amynthas (Oligochaeta: Megascolecidae) and Drawida (Oligochaeta: Moniligastridae). Zootaxa 3973 (3): 425-450, DOI: 10.11646/zootaxa.3973.3.2

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CUI, YONGDE, and HONGZHU WANG. "Three new species of Tubificinae, Oligochaeta, from two plateau lakes in Southwest China." Zootaxa 2143, no. 1 (2009): 45–54. http://dx.doi.org/10.11646/zootaxa.2143.1.3.

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Three new species of Tubificinae (Naididae, Oligochaeta), Varichaetadrilus vestibulatus n. sp., Aulodrilus apeniatus n. sp., and Ilyodrilus mesoprostatus n. sp., are reported from Fuxian Lake and Xingyun Lake of Yunnan Province, Southwest China. V. vestibulatus differs from its allies by possessing modified spermathecal chaetae and thinner cylindrical penial sheaths. A. apeniatus is unique in the genus by having no penis. I. mesoprostatus is distinguishable from congeners by its prostate glands joining middle portion of atria and having concave, cone-shaped cuticular penial sheaths. Twenty-eig

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DES CHÂTELLIERS, MICHEL CREUZÉ, JACQUES JUGET, MICHEL LAFONT, and PATRICK MARTIN. "Subterranean aquatic Oligochaeta." Freshwater Biology 54, no. 4 (2009): 678–90. http://dx.doi.org/10.1111/j.1365-2427.2009.02173.x.

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Futenma de Lima, Mariana, Douglas Aparecido Girolli, Nathalie Aparecida de Oliveira Sanches, Juliano José Corbi, and Guilherme Rossi Gorni. "Occurrence of Oligochaeta species (Annelida: Clitellata) in Rivers in the State of São Paulo (Brazil)." Revista Brasileira Multidisciplinar 25, no. 1 (2022): 73–81. http://dx.doi.org/10.25061/2527-2675/rebram/2022.v25i1.1333.

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The knowledge about the diversity and fauna distribution in tropical freshwater ecosystems is of extreme ecological importance, however studies on this theme still scarce. Organisms belonging to the Oligochaeta Class are considered important bioindicators for environmental quality analysis, but detailed knowledge about these organisms is still insufficient. This study aims to investigate the occurrence of oligochaeta species in eight rivers of the State of São Paulo (Brazil), to expand the species catalogue and identify the its relationship with the trophic state of sampled environments. The s

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Abada, Ahmed. "Low- versus High-water level effect on subtropical benthic freshwater meiofauna." EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) 19, no. 1 (2023): 1. http://dx.doi.org/10.5455/egysebz.20221229092731.

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Little is known about meiofaunal responses to Low- versus High-Water-Level (L- vs HWL) particularly in the subtropics. Meiofaunal reaction was evaluated in three locations (deeply-different) in two man-made freshwater channels in (Rowaina and Shalma) Northern Nile Egyptian delta: 50, 100, & 150, and 900, 950, & 1000 metres distances from the sluice, respectively. LWL and HWL were in January and July 2019 respectively. Eight vs ten and nine vs eleven major taxa were noted in Rowaina H- vs LWL and Shalma L- vs HWL, respectively. Taxa had different susceptibilities to L- vs HWL. Nematode,

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Ferraguti, M., C. Erseus, and A. Pinder. "The Spermatozoon of Capilloventer Australis and the Systematic Position of the Capilloventridae (Annelida: Oligochaeta)." Australian Journal of Zoology 44, no. 5 (1996): 469. http://dx.doi.org/10.1071/zo9960469.

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The spermatozoon and spermiogenesis of Capilloventer australis, an oligochaete annelid belonging to the family Capilloventridae, were examined with the aim of supplying further elements for the discussion of the phylogenetic position of the family. Capilloventer australis has a typical oligochaete spermatozoon, with an acrosome tube, mitochondria between the nucleus and flagellum, and a basal cylinder inside the basal body. The acrosome is plesiomorphic, with many characters in common with the Enchytraeidae. The nucleus is twisted, as that of most microdriles, but the middle piece is highly ap

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Moreno, Ana G. "Martiodrilus (Martiodrilus) jesuscallejai sp. nov. (Annelida, Oligochaeta: Glossoscolecidae), a new species of earthworm from Colombia." Boletín de la Real Sociedad Española de Historia Natural 2023/117 (2023): 65–89. http://dx.doi.org/10.29077/bol.2023.117.moreno.

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A new species of earthworm, Martiodrilus (Martiodrilus) jesuscallejai sp. nov. (Oligochaeta: Glossoscolecidae) from Colombia is described. This is the first time one species of the genus Martiodrilus is cited in the Orinoquia region. A nouveaux espèce de vers de terre, Martiodrilus (Martiodrilus) jesuscallejai sp. nov. (Oligochaeta: Glossoscolecidae), est décrit pour la Colombie. C’est la première fois qu’une espèce du genre Martiodrilus est citée dans la région de l’Orénoque. Se describe una nueva especie, Martiodrilus (Martiodrilus) jesuscallejai sp. nov., (Oligochaeta: Glossoscolecidae), re

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Zhang, Wei-Xin, Jian-Xiong Li, and Jiang-Ping Qiu. "New earthworms belonging to the genus of Amynthas Kinberg (Megascolecidae: Oligochaeta) and Drawida Michaelsen (Moniligastridae: Oligochaeta) from Guangdong, China." Journal of Natural History 40, no. 7-8 (2006): 395–401. https://doi.org/10.1080/00222930600661987.

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Zhang, Wei-Xin, Li, Jian-Xiong, Qiu, Jiang-Ping (2006): New earthworms belonging to the genus of Amynthas Kinberg (Megascolecidae: Oligochaeta) and Drawida Michaelsen (Moniligastridae: Oligochaeta) from Guangdong, China. Journal of Natural History 40 (7-8): 395-401, DOI: 10.1080/00222930600661987, URL: http://dx.doi.org/10.1080/00222930600661987

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Potyutko, O. M. "Oligochaeta (Annelida, Oligochaeta) in the Curonian Lagoon of the Baltic Sea." Inland Water Biology 8, no. 3 (2015): 269–75. http://dx.doi.org/10.1134/s1995082915030116.

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Suriani-Affonso, AL, RS França, M. Marchese, and O. Rocha. "Environmental factors and benthic Oligochaeta (Annelida, Clitellata) assemblages in a stretch of the Upper São Francisco River (Minas Gerais State, Brazil)." Brazilian Journal of Biology 71, no. 2 (2011): 437–46. http://dx.doi.org/10.1590/s1519-69842011000300013.

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The Oligochaeta forms an important part of the macroinvertebrates inhabiting sediments of lotic ecosystems. It has an important role in the cycling of matter and energy transfer in these environments. The aim of this study is to analyse limnological variables, their influence on the structure and diversity of benthic oligochaete taxocenosis in a stretch of the Upper São Francisco River and its tributary the Piumhi River. Samples were taken in two climatic periods, the dry season in October 2006 and 2007 and the rainy season in March 2007 and 2008 at three points along the Piumhi River and six

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Gorni, Guilherme R., and Roberto da G. Alves. "Naididae (Annelida, Oligochaeta) associated with Pomacea bridgesii (Reeve) (Gastropoda, Ampullaridae)." Revista Brasileira de Zoologia 23, no. 4 (2006): 1059–61. http://dx.doi.org/10.1590/s0101-81752006000400011.

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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 w

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Wei, Y., and J. Liu. "The discharged excess sludge treated by Oligochaeta." Water Science and Technology 52, no. 10-11 (2005): 265–72. http://dx.doi.org/10.2166/wst.2005.0702.

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To overcome unstable worm growth, a new worm-reactor was developed for oligochaete growth. The bench scale of this worm-reactor was used to treat the discharged excess sludge from a pilot activated sludge system, and experiments were carried out to investigate the sludge reduction induced by Oligochaeta. Due to difficult getting free-swimming worms such as Aeolosoma hemprichicii and Nais elinguis, Tubifex tubifex was thus selected and inoculated in Reactor 1 at the start-up phase except the control reactor (Reactor 2). Tubifex occurred in Reactor 1 throughout the operation period after its ino

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Omodeo, Pietro. "The genusEophila(Lumbricidae, Oligochaeta)." Bolletino di zoologia 55, no. 1-4 (1988): 73–84. http://dx.doi.org/10.1080/11250008809386603.

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Rota, Emilia. "Italian Enchytraeidae (Oligochaeta). I." Bolletino di zoologia 62, no. 2 (1995): 183–231. http://dx.doi.org/10.1080/11250009509356067.

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Römbke, Jörg. "Enchytraeen (Oligochaeta) als Bioindikatoren." Umweltwissenschaften und Schadstoff-Forschung 7, no. 4 (1995): 246–49. http://dx.doi.org/10.1007/bf02937536.

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NA. "Regenwurmer aus Bolivien (Oligochaeta)." Revue suisse de zoologie 102 (June 7, 1995): 585–608. https://doi.org/10.5281/zenodo.13678512.

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Alves, Roberto da Gama, Mercedes Rosa Marchese, and Suzana Cunha Escarpinati. "Oligochaeta (Annelida, Clitellata) in lotic environments in the state of São Paulo, Brazil." Iheringia. Série Zoologia 96, no. 4 (2006): 431–35. http://dx.doi.org/10.1590/s0073-47212006000400007.

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Despite the importance of Oligochaeta to the dynamics of aquatic ecosystems and to studies of the biology of pollution, there is currently a dearth of information on this group's ecology in Brazil. The aim of this study was to describe the Oligochaeta fauna in four watercourses - three urban and one rural - in the state of São Paulo: the Pinheirinho stream, the Água Branca stream, the Monjolinho River and the Gouveia stream, respectively. Sediment samples were taken with a Van Veen grab in two areas from each watercourse, during the summer and winter of 2001. In all collection areas, measureme

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Cui, Yongde, and Hongzhu Wang. "Three new species of Potamothrix (Oligochaeta, Naididae, Tubificinae) from Fuxian Lake, the deepest lake of Yunnan Province, Southwest China." ZooKeys 175 (March 16, 2012): 1–17. https://doi.org/10.3897/zookeys.175.2413.

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Three new species of <i>Potamothrix</i> Vejdovský & Mrázek, 1902 (Oligochaeta: Tubificinae), <i>P.</i> <i>praeprostatus</i> sp. n., <i>P.</i> <i>paramoldaviensis</i> sp. n. and <i>P. parabedoti</i> sp. n., are reported from Fuxian Lake of Yunnan Province, Southwest China. <i>P.</i> <i>praeprostatus </i>differs from its allies by its prostate glands joining atria in its proximal to middle portion, and spermathecal chaetae. <i>P. paramoldaviensis</i> is distinguishable from its allies bypenial chaeta but no penes, and differs from <i>P. moldaviensis </i>by its homogenous atrium. <i>P. parabe

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FRAGOSO, CARLOS, and PATRICIA ROJAS. "A new semiaquatic worm (Annelida, Oligochaeta) from southeastern Mexican tropical rain forests." Zootaxa 5255, no. 1 (2023): 136–56. http://dx.doi.org/10.11646/zootaxa.5255.1.16.

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A new Oligochaete worm genus with a single species is described from tropical rain forests of Southern Mexico. Lacandodrilus paludosus Fragoso & Rojas gen. et sp. nov., found in sandy and acid poor swampy soils, presented a characteristic morphology of semiaquatic oligochaetes. The new taxon is holandric, with male pores and ovaries in segment 13, with genital prostatic- like lobular glands in segments 13 and 14 and with long seminal vesicles contained within ovisacs. It is also characterized by exonephric holonephridia covered by a peritoneal granular layer, septal glands and long vascula

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NAVEED, MOHAMMED IBRAHIM, S. THULASIRAJA, S. KARUNAKARAN, C. KULANDAIVEL, and R. TAMIL SELVAN. "Preliminary survey of aquatic oligochaetes in Eastern Tamil Nadu, India." Zoosymposia 9, no. 1 (2014): 14–23. http://dx.doi.org/10.11646/zoosymposia.9.1.6.

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A random survey of aquatic Oligochaeta was conducted in Chennai, Villupuram, Dindugal, Thiruvallur, and Sivagangai districts of Tamil Nadu from November 2010 to March 2012. Thirteen taxa were identified from a total of 644 aquatic oligochaetes examined from various qualitative samples of aquatic vegetation and sediments. Chennai district had 3 families: Naididae, Pristinidae and Tubificidae along with a polychaete. The naidids were most diverse with 5 species: Branchiodrilus semperi, Aulophorus furcatus, Dero digitata, Dero indica and Dero zeylanica, the pristinids were represented by Pristina

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Journal, Baghdad Science. "Biodiversity Index value of benthic invertebrates' community in relation with variation of some environmental properties in Rivers Tigris and Diyala within Baghdad city." Baghdad Science Journal 11, no. 2 (2014): 969–74. http://dx.doi.org/10.21123/bsj.11.2.969-974.

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This study was carried out to determine the effects of some environmental variables on biodiversity index value of benthic invertebrates' community in samples that collected monthly from two adjacent sites nearby the confluence of Tigris and Diyala rivers within Baghdad city that’s from November 2007 - October 2008. Results showed differences in chemical and physical characteristics for each river. Where the annual averages of these characteristics in Rivers Tigris and Diyala respectively for: water temperature (20, 19) Cº, pH (8, 8), Dissolved oxygen DO(8,4 ) mg/l , EC(1152,2979)µc/cm , Turbi

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HIRABAYASHI, KIMIO, KEIKO OGA, and MASAMICHII YAMAMOTO. "Bathymetric distribution of aquatic Oligochaeta in Lake Kizaki, Central Japan." Zoosymposia 9, no. 1 (2014): 36–43. http://dx.doi.org/10.11646/zoosymposia.9.1.8.

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Bathymetric distribution of aquatic oligochaetes was studied at 8 stations with different depths (mean depth 16.7 ± 9.4 m, min. 5.3 m, max. 29.4 m) in July 2012 in mesotrophic Lake Kizaki, Nagano Prefecture, Central Japan. The average density was 10424 ± 5346 individuals m-2. Oligochaetes were numerically dominant at all sampling stations. High density, sometimes more than 10000 individuals m-2,was recorded at 3 stations (St. 4, 5, and 6) deeper than 18 m. Maximum density was 20561 ± 13864 individuals m-2 at Station 4 (depth 29.4 m, ignition loss of sediment 13.5%, bottom water temperature 8.1

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