Annual study of Leptocybe invasa gall’s number Fisher & La Salle 2004 (Hymenoptera: Eulophidae) of Eucalyptus camaldulensis (Myrtaceae) in the North-East of Algeria

  • Abdelmalek Oulmi Department of Ecology and Vegetal Biology, Laboratory for the Valorization of Natural Biological Resources (LVNBR), Faculty of Nature and Life Science (FNLS), Ferhat ABBAS University Sétif-1, 19000 Setif, Eastern of Algeria
  • Noureddine Laadel University Ferhat Abbas Sétif-1, Faculty of Nature and Life Sciences, Department of Biology and Animal Physiology, Laboratory ADPVA, Setif-1, Algeria
  • Farida Benia University Ferhat Abbas Sétif-1, Faculty of Nature and Life Sciences, Department of Biology and Animal Physiology, Laboratory ADPVA, Setif-1, Algeria
  • Sofiane Guettaf Laboratory of Applied Microbiology, Faculty of Natural and Life Sciences, University Ferhat Abbas Sétif1, Setif, Algeria

Abstract

Eucalyptus camaldulensis is an essence of the family Myrtaceae. It resists a certain salt content and the sea wind. Despite that, it subject to many factors of degradation as parasitic and harmful insects. In the last years, an insect is detected on the foliage of Eucalyptus  camaldulensis trees in Algeria (North-East region). The results made it possible evidence the presence of one harmful species Leptocybe invasa Fisher & La Salle 2004 (Hymenoptera: Eulophidae), this parasite has been detected in 2006, The Chronology of Gall’s emergence of Leptocybe  invasa and its field infestation rate were followed since 2010, in Eucalyptus plantation in the North-East Region. Some statistical methods of Gall’s emergence of this pest is reviewed and discussed. First, after exploration, we selected the most affected trees, second, we organized the samples of each tree, we respected the orientation (North-South-East-West). For each study site 10 trees were marked. 30 leaves of each tree were removed, so it is 300 leaves for each site, which were analyzed. We used the method of time series that connects the time with the number of galls. This study is based on the number of galls observed, on both sides of the leaves. In order to highlight the degree of attack of pests. The outputs were made from October 2012 to October 2013, due to two outputs per month.


Keywords: Eucalyptus, gall wasps, Eulophidae, gall inducers, Algeria.

Keywords: Eucalyptus, gall wasps, Eulophidae, gall inducers, Algeria

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Author Biographies

Abdelmalek Oulmi, Department of Ecology and Vegetal Biology, Laboratory for the Valorization of Natural Biological Resources (LVNBR), Faculty of Nature and Life Science (FNLS), Ferhat ABBAS University Sétif-1, 19000 Setif, Eastern of Algeria

Department of Ecology and Vegetal Biology, Laboratory for the Valorization of Natural Biological Resources (LVNBR), Faculty of Nature and Life Science (FNLS), Ferhat ABBAS University Sétif-1, 19000 Setif, Eastern of Algeria

Noureddine Laadel, University Ferhat Abbas Sétif-1, Faculty of Nature and Life Sciences, Department of Biology and Animal Physiology, Laboratory ADPVA, Setif-1, Algeria

University Ferhat Abbas Sétif-1, Faculty of Nature and Life Sciences, Department of Biology and Animal Physiology, Laboratory ADPVA, Setif-1, Algeria

Farida Benia, University Ferhat Abbas Sétif-1, Faculty of Nature and Life Sciences, Department of Biology and Animal Physiology, Laboratory ADPVA, Setif-1, Algeria

University Ferhat Abbas Sétif-1, Faculty of Nature and Life Sciences, Department of Biology and Animal Physiology, Laboratory ADPVA, Setif-1, Algeria

Sofiane Guettaf, Laboratory of Applied Microbiology, Faculty of Natural and Life Sciences, University Ferhat Abbas Sétif1, Setif, Algeria

Laboratory of Applied Microbiology, Faculty of Natural and Life Sciences, University Ferhat Abbas Sétif1, Setif, Algeria

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Oulmi A, Laadel N, Benia F, Guettaf S. Annual study of Leptocybe invasa gall’s number Fisher & La Salle 2004 (Hymenoptera: Eulophidae) of Eucalyptus camaldulensis (Myrtaceae) in the North-East of Algeria. JDDT [Internet]. 15Sep.2020 [cited 25Sep.2020];10(5):94-7. Available from: http://jddtonline.info/index.php/jddt/article/view/4384