Chironomid (Diptera, Chironomidae) species assemblages in northeastern Algerian hydrosystems


Submitted: 11 October 2012
Accepted: 21 December 2012
Published: 23 April 2013
Abstract Views: 1746
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Authors

  • N. Chaib Département de Génie des Procédés, Faculté de Technologie, Université du 20 Août 1955, Skikda; Laboratoire de Recherche et de Conservation des Zones Humides, Université du 8 Mai 1945 Guelma, Algeria.
  • A. Fouzari Laboratoire de Recherche et de Conservation des Zones Humides, Université du 8 Mai 1945 Guelma, Algeria.
  • Z. Bouhala Laboratoire de Recherche et de Conservation des Zones Humides, Université du 8 Mai 1945 Guelma, Algeria.
  • B. Samraoui Laboratoire de Recherche et de Conservation des Zones Humides, Université du 8 Mai 1945 Guelma, Algeria; Center of Excellence for Research in Biodiversity, King Saud University, Riyadh, Saudi Arabia, .
  • B. Rossaro Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, Milano, Italy.
The aim of this paper was to analyze the distribution of chironomids (Diptera, Chironomidae), and determine their substrate preferences, from two hydrosystems located in northeastern Algeria: the Kebir-East and the Seybouse wadis. Sixty-five species were recorded in 49 sampling sites distributed along the main courses of the two hydrographic nets and their tributaries. The majority of taxa comprised cosmopolitan species widely distributed along these two hydrosystems. Cricotopus (Cricotopus) bicinctus showed the highest abundance and frequency of occurrence (29.52%) and was widespread in almost all the sampling sites. Species richness ranged from 4 to 23, Shannon diversity between 0.15 and 0.90, Evenness from 0.23 to 1. A cluster analysis was carried out to represent the different groups of sites sharing similar species composition. Agglomerative cluster analysis grouped the sampling sites into four clusters according to the community data. An Indval analysis was then carried out to detect indicator species for each group of the sampling sites. Cricotopus (Isocladius) sylvestris was indicator of the first group of the sampling sites. Orthocladius pedestris, Rheocricotopus chalybeatus and C. bicinctus were indicators of the second group, and Polypedilum cultellatum of the third group. The fourth group was not characterized by any species. Indval analysis allowed also to determine species preferences for substrate size: Corynoneura scutellata and Dicrotendipes nervosus emphasized a preference to fine gravel, and Glyptotendipes pallens to fine sand.

Supporting Agencies

Algerian Ministère de l’Enseignement Supérieur et de la Recherche Scientifique (DGRSDT/M.E.S.R.S.) and the King Saud University Deanship of Scientific Research, Research Group Project No, RGP-VPP-135.

Chaib, N., Fouzari, A., Bouhala, Z., Samraoui, B., & Rossaro, B. (2013). Chironomid (Diptera, Chironomidae) species assemblages in northeastern Algerian hydrosystems. Journal of Entomological and Acarological Research, 45(1), e2. https://doi.org/10.4081/jear.2013.e2

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