An assessment of population fluctuations of citrus pest woolly whitefly Aleurothrixus floccosus (Maskell, 1896) (Homoptera, Aleyrodidae) and its parasitoid Cales noacki Howard, 1907 (Hymenoptera, Aphelinidae): A case study from Northwestern Algeria
The aim of this study was to assess the effectiveness of the parasitoid <em>Cales noacki</em> Howard, 1907 (Hymenoptera, Aphelinidae) in the biological control of the citrus pest woolly whitefly, <em>Aleurothrixus floccosus</em> (Maskell,1896) in Northwestern Algeria. In part...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
University of Ljubljana, Biotechnical Faculty
2018-10-01
|
Series: | Acta Agriculturae Slovenica |
Subjects: | |
Online Access: | http://ojs.aas.bf.uni-lj.si/index.php/AAS/article/view/726 |
id |
doaj-8b3b35eeb209472dbb978ce42de3634f |
---|---|
record_format |
Article |
spelling |
doaj-8b3b35eeb209472dbb978ce42de3634f2020-11-25T02:26:03ZengUniversity of Ljubljana, Biotechnical FacultyActa Agriculturae Slovenica1581-91751854-19412018-10-01111240741710.14720/aas.2018.111.2.15241An assessment of population fluctuations of citrus pest woolly whitefly Aleurothrixus floccosus (Maskell, 1896) (Homoptera, Aleyrodidae) and its parasitoid Cales noacki Howard, 1907 (Hymenoptera, Aphelinidae): A case study from Northwestern AlgeriaAbdelhaq MAHMOUDI0Leila ALLAL BENFEKIH1Abdurrahman YIGIT2Mattheus F. A. GOOSEN3University of Blida-1- Faculty of Nature and Life Sciences - Department of Biotechnology - Laboratory of Vegetables Biotechnologies Production., B.P. 270, road of Soumaa, AlgeriaUniversity of Blida-1- Faculty of Nature and Life Sciences - Department of Biotechnology - Laboratory of Biotechnology of aromatic, medicinal plants and natural products, B.P. 270, road of Soumaa, AlgeriaMustafa Kemal University, Agriculture Faculty, Plant Protection Department, Antakya-Hatay, TurkeyOffice of Research & Graduate Studies Alfaisal University Riyadh Saudi ArabiaThe aim of this study was to assess the effectiveness of the parasitoid <em>Cales noacki</em> Howard, 1907 (Hymenoptera, Aphelinidae) in the biological control of the citrus pest woolly whitefly, <em>Aleurothrixus floccosus</em> (Maskell,1896) in Northwestern Algeria. In particular the pest and parasitoid population fluctuations under different environmental conditions were investigated. The study was conducted by examination and sampling of whitefly adult populations on young shoots and catches as well as its parasitoid during a 12-month period by counting the parasite and infested-live larvae. Results showed remarkable variations in abundance indices and infestation rates of larvae and adults that depended on the growth flush in foliage and meteorological conditions of the region. The woolly whitefly manifested three flight periods coinciding with three growth flushes of orange sap; in autumn towards the end of September followed by mid-November with the highest average abundance of 10 individuals per branch and a third flight period in mid-May. Phases of growth flush seemed to have an effect on the temporal distribution of adults over the sampling period from July to June. Pest emergence appeared favorable at 12-20 °C as the minimum interval temperature whereas the maximum varied between 25-33 °C with humidity levels of 50 % and 75 %. As for the incidence of natural enemies on whiteflies, despite their abundance, their impact was not optimum due to the large fluctuations in number of whiteflies. Although the pest-parasitoid complex appears to be important in the orchard, the biological regulation exerted by <em>C. noacki</em> while effective is insufficient for the complete neutralization of citrus woolly whitefly <em>A. floccosus</em>. An integrated approach is needed using additional natural enemies associated with the woolly whitefly.http://ojs.aas.bf.uni-lj.si/index.php/AAS/article/view/726citrusbiological controlpopulation dynamicsAleurothrixus floccosusCales noackiphenologyChlef Northwestern Algeria |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Abdelhaq MAHMOUDI Leila ALLAL BENFEKIH Abdurrahman YIGIT Mattheus F. A. GOOSEN |
spellingShingle |
Abdelhaq MAHMOUDI Leila ALLAL BENFEKIH Abdurrahman YIGIT Mattheus F. A. GOOSEN An assessment of population fluctuations of citrus pest woolly whitefly Aleurothrixus floccosus (Maskell, 1896) (Homoptera, Aleyrodidae) and its parasitoid Cales noacki Howard, 1907 (Hymenoptera, Aphelinidae): A case study from Northwestern Algeria Acta Agriculturae Slovenica citrus biological control population dynamics Aleurothrixus floccosus Cales noacki phenology Chlef Northwestern Algeria |
author_facet |
Abdelhaq MAHMOUDI Leila ALLAL BENFEKIH Abdurrahman YIGIT Mattheus F. A. GOOSEN |
author_sort |
Abdelhaq MAHMOUDI |
title |
An assessment of population fluctuations of citrus pest woolly whitefly Aleurothrixus floccosus (Maskell, 1896) (Homoptera, Aleyrodidae) and its parasitoid Cales noacki Howard, 1907 (Hymenoptera, Aphelinidae): A case study from Northwestern Algeria |
title_short |
An assessment of population fluctuations of citrus pest woolly whitefly Aleurothrixus floccosus (Maskell, 1896) (Homoptera, Aleyrodidae) and its parasitoid Cales noacki Howard, 1907 (Hymenoptera, Aphelinidae): A case study from Northwestern Algeria |
title_full |
An assessment of population fluctuations of citrus pest woolly whitefly Aleurothrixus floccosus (Maskell, 1896) (Homoptera, Aleyrodidae) and its parasitoid Cales noacki Howard, 1907 (Hymenoptera, Aphelinidae): A case study from Northwestern Algeria |
title_fullStr |
An assessment of population fluctuations of citrus pest woolly whitefly Aleurothrixus floccosus (Maskell, 1896) (Homoptera, Aleyrodidae) and its parasitoid Cales noacki Howard, 1907 (Hymenoptera, Aphelinidae): A case study from Northwestern Algeria |
title_full_unstemmed |
An assessment of population fluctuations of citrus pest woolly whitefly Aleurothrixus floccosus (Maskell, 1896) (Homoptera, Aleyrodidae) and its parasitoid Cales noacki Howard, 1907 (Hymenoptera, Aphelinidae): A case study from Northwestern Algeria |
title_sort |
assessment of population fluctuations of citrus pest woolly whitefly aleurothrixus floccosus (maskell, 1896) (homoptera, aleyrodidae) and its parasitoid cales noacki howard, 1907 (hymenoptera, aphelinidae): a case study from northwestern algeria |
publisher |
University of Ljubljana, Biotechnical Faculty |
series |
Acta Agriculturae Slovenica |
issn |
1581-9175 1854-1941 |
publishDate |
2018-10-01 |
description |
The aim of this study was to assess the effectiveness of the parasitoid <em>Cales noacki</em> Howard, 1907 (Hymenoptera, Aphelinidae) in the biological control of the citrus pest woolly whitefly, <em>Aleurothrixus floccosus</em> (Maskell,1896) in Northwestern Algeria. In particular the pest and parasitoid population fluctuations under different environmental conditions were investigated. The study was conducted by examination and sampling of whitefly adult populations on young shoots and catches as well as its parasitoid during a 12-month period by counting the parasite and infested-live larvae. Results showed remarkable variations in abundance indices and infestation rates of larvae and adults that depended on the growth flush in foliage and meteorological conditions of the region. The woolly whitefly manifested three flight periods coinciding with three growth flushes of orange sap; in autumn towards the end of September followed by mid-November with the highest average abundance of 10 individuals per branch and a third flight period in mid-May. Phases of growth flush seemed to have an effect on the temporal distribution of adults over the sampling period from July to June. Pest emergence appeared favorable at 12-20 °C as the minimum interval temperature whereas the maximum varied between 25-33 °C with humidity levels of 50 % and 75 %. As for the incidence of natural enemies on whiteflies, despite their abundance, their impact was not optimum due to the large fluctuations in number of whiteflies. Although the pest-parasitoid complex appears to be important in the orchard, the biological regulation exerted by <em>C. noacki</em> while effective is insufficient for the complete neutralization of citrus woolly whitefly <em>A. floccosus</em>. An integrated approach is needed using additional natural enemies associated with the woolly whitefly. |
topic |
citrus biological control population dynamics Aleurothrixus floccosus Cales noacki phenology Chlef Northwestern Algeria |
url |
http://ojs.aas.bf.uni-lj.si/index.php/AAS/article/view/726 |
work_keys_str_mv |
AT abdelhaqmahmoudi anassessmentofpopulationfluctuationsofcitruspestwoollywhiteflyaleurothrixusfloccosusmaskell1896homopteraaleyrodidaeanditsparasitoidcalesnoackihoward1907hymenopteraaphelinidaeacasestudyfromnorthwesternalgeria AT leilaallalbenfekih anassessmentofpopulationfluctuationsofcitruspestwoollywhiteflyaleurothrixusfloccosusmaskell1896homopteraaleyrodidaeanditsparasitoidcalesnoackihoward1907hymenopteraaphelinidaeacasestudyfromnorthwesternalgeria AT abdurrahmanyigit anassessmentofpopulationfluctuationsofcitruspestwoollywhiteflyaleurothrixusfloccosusmaskell1896homopteraaleyrodidaeanditsparasitoidcalesnoackihoward1907hymenopteraaphelinidaeacasestudyfromnorthwesternalgeria AT mattheusfagoosen anassessmentofpopulationfluctuationsofcitruspestwoollywhiteflyaleurothrixusfloccosusmaskell1896homopteraaleyrodidaeanditsparasitoidcalesnoackihoward1907hymenopteraaphelinidaeacasestudyfromnorthwesternalgeria AT abdelhaqmahmoudi assessmentofpopulationfluctuationsofcitruspestwoollywhiteflyaleurothrixusfloccosusmaskell1896homopteraaleyrodidaeanditsparasitoidcalesnoackihoward1907hymenopteraaphelinidaeacasestudyfromnorthwesternalgeria AT leilaallalbenfekih assessmentofpopulationfluctuationsofcitruspestwoollywhiteflyaleurothrixusfloccosusmaskell1896homopteraaleyrodidaeanditsparasitoidcalesnoackihoward1907hymenopteraaphelinidaeacasestudyfromnorthwesternalgeria AT abdurrahmanyigit assessmentofpopulationfluctuationsofcitruspestwoollywhiteflyaleurothrixusfloccosusmaskell1896homopteraaleyrodidaeanditsparasitoidcalesnoackihoward1907hymenopteraaphelinidaeacasestudyfromnorthwesternalgeria AT mattheusfagoosen assessmentofpopulationfluctuationsofcitruspestwoollywhiteflyaleurothrixusfloccosusmaskell1896homopteraaleyrodidaeanditsparasitoidcalesnoackihoward1907hymenopteraaphelinidaeacasestudyfromnorthwesternalgeria |
_version_ |
1724848714559782912 |