Skip to content
Licensed Unlicensed Requires Authentication Published by De Gruyter February 25, 2016

The aquatic annelid community in Lake Al-Delmage (Iraq)

  • Haifa J. Jaweir EMAIL logo and Maysoon H. Al-Sarai EMAIL logo
From the journal Biologia


Lake Al-Delmage is part of the middle section of a main outfall drain located south of Baghdad (Iraq). This study focuses on the community structure of aquatic annelids and the physico-chemical variables in this lake. Six stations along the lake were chosen for sample collection in the period from January 2013 to January 2014. The results revealed that the lake water is oligohaline, with salinity levels ranging from 1.5 to 14.6 ‰ and temperatures ranging from 9°C to 33°C; hydrogen ion concentrations (as pH) ranging between 7 and 9. Water was well aerated with dissolved oxygen concentrations values ranging between 6 and 12 mg L−1, and BOD values ranging between 1.5 and 3 mg L−1. The lake water was considered as very hard, since the total hardness values ranging between 825 and 8466 mg L−1. From samples collected during the study period, 1,885 aquatic annelid specimens were identified. Of these, 58% belonged to the family Aeolosomatidae (Polychaeta); the remaining taxa belonged to subfamilies of the family Naididae (Oligochaeta – Clitellata): subfamily Naidinae (6%), subfamily Tubificinae (36%), and subfamily Rhyacodrilinae, Branchiura sowerbyi (3%). Two species of Aeolosomatidae were recognized, Aeolosoma hemprichi and Aeolosoma variegatum. Naidid worms of the subfamily Naidinae included three species, Paranais litoralis, Dero (Aulophorus) furcatus, and Stylaria lacustris. The highest frequency percentage of 23.6% was recorded for P. litoralis. The subfamily Tubificinae was represented by five species – Limnodrilus hoffmeisteri, L. profundicola, L. claparedeanus, L. udekemianus, and Tubifex tubifex. Limnodrilus claparedeanus was the most abundant species, comprising 53% of the total number of Tubificinae. Seasonal fluctuations showed spatial and temporal variations of species richness. The highest species richness was recorded in the stations near the feeder canal, and temporally during June and October 2013.

The paper was presented at the 13th International Symposium on Aquatic Oligochaeta, Brno, Czech Republic, 7–11 September, 2015


Al-Abbad M.Y.M. 2012. New records of twelve species of Oligocheata (Naididae and Aeolosomatidae) from southern Iraqi marshes, Iraq. Jordan Journal of Biological Science 5 (2): 105–111.Search in Google Scholar

Brinkhurst R.O. 1971a. Chapter 7. Naididae, pp. 304–443. In: Brinkhurst R.O. & Jamieson B.G.M. (eds), Aquatic Oligochaeta of the World, Oliver and Boyd, Edinburgh, xi + 860 pp. ISBN: 0-05-002155-9Search in Google Scholar

Brinkhurst R.O. 1971b. Chapter 8. Tubificidae, pp. 444–625. In: Brinkhurst R.O. & Jamieson B.G.M. (eds), Aquatic Oligochaeta of the World, Oliver and Boyd, Edinburgh, xi + 860 pp. ISBN: 0-05-002155-9Search in Google Scholar

Brinkhurst R.O. & Jamieson B.G.M. (eds). 1971. Aquatic Oligochaetes of the World. Oliver and Boyd, Edinburgh, University of Toronto Press, Toronto, Canada, xi + 860 pp. ISBN: 0-05-002155-9Search in Google Scholar

Duncan D.B. 1955. Multiple Range and Multiple F-test. Biometrics 11: 4–42. DOI: 10.2307/300147810.2307/3001478Search in Google Scholar

Erséus C., Wetzel M.J. & Gustavsson L. 2008. ICZN rules – a farewell to Tubificidae (Annelida, Clitellata). Zootaxa 1744 (1): 66–68. DOI: 10.11646/zootaxa.1744.1.710.11646/zootaxa.1744.1.7Search in Google Scholar

Jaweir H.J. 2011. A new record of three tubificid species (Annelida: Oligochaeta) from Al-Haweizah Marsh, Iraq. Mesopot. J. Mar. Sci. 26 (2): 114–121Search in Google Scholar

Jaweir H.J. 2014. Checklist of aquatic oligochaetes species in Tigris – Euphrates river basin. Baghdad Science Journal 11 (3): 1397–1404.10.21123/bsj.11.3.1397-1404Search in Google Scholar

Jaweir H.J. & Al-Janabi E.O.S. 2012. Biodiversity and abundance of aquatic oligochaetes, family Naididae in the middle sector of Euphrates River, Iraq. Int. J. Environ. Water 1(1): 122– 130.Search in Google Scholar

Jaweir H.J. & Al-Sarai M.H. 2015. A study of the benthic invertebrates community in Al-Delmage Lake – Middle of Iraq. Iraqi Journal of Science 56 (3c): 2513–2522.Search in Google Scholar

Jaweir H.J. & Alwan A.M. 2013. Sludge worms species from different aquatic habitats in Baghdad / Iraq. Baghdad Science Journal 10 (2): 269–281.10.21123/bsj.10.2.269-281Search in Google Scholar

Jaweir H.J. & Rhadi M.M. 2012. Naididae (Clitellata: Oligochaeta) and Aeolosomatidae (Polychaeta: Aphanoneura) species associated with aquatic plants in Tigris river / Baghdad / Iraq. Baghdad Science Journal 10 (1): 116–125.Search in Google Scholar

Jaweir H.J. & Salman M.D. 2014. Study of Naidid worms community associated with two species of aquatic plants in River Tigris inside Baghdad City. Baghdad Science Journal 11 (3): 1334–1341.10.21123/bsj.11.3.1334-1341Search in Google Scholar

Jaweir H.J., Sabtie H. & Al-Mukhtar E.A. 2012. Aquatic oligochaetes of Iraq’s Southern Marshes. Baghdad Science Journal 9(3): 472–480.10.21123/bsj.9.3.472-480Search in Google Scholar

Jaweir H.J., Salman J.M. & Abaid Z.H. 2014. Spatial and temporal distribution of benthic Oligochaeta in Euphrates River, middle of Iraq. Mesopotamia Environmental Journal 1(1): 1–6.Search in Google Scholar

Lietz D.M. 1987. Potential for aquatic oligochaetes as live food in commercial aquaculture. pp. 309–310. In: Brinkhurst R.O. & Diaz R.J. (eds), Aquatic Oligochaeta, Proceedings of the Third International Symposium on Aquatic Oligochaeta held in Hamburg, Germany September 29-October 4, 1985, Series: Developments in Hydrobiology, Vol. 40, Springer Netherlands 323 pp. DOI: 10.1007/978-94-009-3091-9 40. ISBN: 978940107889410.1007/978-94-009-3091-9_40Search in Google Scholar

Lind O.T. 1979. Handbook of Common Methods in Limnology. Mosby, C.V. Pub. Co. St. Louis, MO. USA, 199 pp. ISBN: 0801630193, 9780801630194Search in Google Scholar

Mackereth F.J.H., Heron J. & Tailng J.T. 1987. Water Analysis. Some Revised Methods for Limnologist. Sci. Publ. No. 36, Freshwater Biol. Assoc. Britain, 120 pp. ISBN-10: 0900386312, ISBN-13: 978-0900386312Search in Google Scholar

Reynolds J.W. & Wetzel M.J. 2015. Nomenclatura Oligochaetologica – A Catalogue of Names, Descriptions and Type Specimens. Edition Secunda. URL: people/mjwetzel/nomenoligo (accessed 28.10.2015)Search in Google Scholar

Rosenberg D.M. & Resh V.H. (eds). 1993. Freshwater Biomonitoring and Benthic Macroinvertebrates. Chapman and Hall, New York, USA, 488 pp. ISBN: 0412-02251-6, 978-0-412-02251-7Search in Google Scholar

Serafim M., Lansac-Toha F.A., Paggi J.C., Velho F.M. & Robertson B. 2003. Cladocera fauna composition in a river flood plain, with a new record for Brazil. Brazil J. Biol. 63 (2): 349–356. DOI: in Google Scholar

Sklar F.H. 1985. Seasonality and community structure of the Back swamp invertebrates in Alonisiana Tupelo wetlands. Wetland J. 5(1): 69–86. DOI: 10.1007/BF0316078810.1007/BF03160788Search in Google Scholar

Ter Braak C.J.F. & Šmilauer P. 2002. Canoco reference manual & Cano draw for windows user’s guide: software for Canonical Communication Ordination (Version 4.5). Microcomputer Power, Ithaca, NU, USA, 500 pp.Search in Google Scholar

Timm T. 2009. A guide to the freshwater Oligochaeta and Polychaeta of the northern and central Europe. Lauterbornia 66: 1–235.Search in Google Scholar

Verdonschot P.F.M. 2006. Beyond masses and blooms: the indicative value of oligochaetes. Hydrobiology 564: 127–142. DOI: 10.1007/1-4020-5368-1 1310.1007/1-4020-5368-1 13Search in Google Scholar

Received: 2015-10-7
Accepted: 2015-11-30
Published Online: 2016-2-25
Published in Print: 2016-1-1

© 2016 Institute of Zoology, Slovak Academy of Sciences

Downloaded on 8.12.2023 from
Scroll to top button