Abstract

Aphids are among the phytophagous pests that cause serious damage to crop plants. In Northern Algeria, we have little information on their diversity. In this context, the study of the diversity of aphids was carried out in three regions of Tizi-Ouzou (North of Algeria) namely Tizi-Ouzou center, Tizi-Rached and Aghribs on the potato crop using yellow traps. The results showed a total richness of 65 aphid species, divided into 36 genera, 9 tribes and 8 sub-families, of which 11 species were identified for the first time in Algeria. These are Aphis coreopsidis (Thomas, 1878), Capitophorus hippophae (Walker, 1852), Cavariella theobaldi (Gillette & Bragg, 1918), Hyadaphis coriandri (B. Das, 1918), Macrosiphoniella linariae (Koch, 1855),Monelliopsis pecanis Bissell, 1983, Myzus hemerocallis Takahashi, 1921, Pseudoregma panicola (Takahashi, 1921), Rhopalosiphoninus staphyleae (Koch, 1854), Schizaphis eastopi Van Harten & Ilharco, 1971 and Ovatus inulae (Walker, 1849). The field located in the center of Tizi-Ouzou is the richest with 55 species, followed by the field of Tizi-Rached with 30 species, and 24 species have been recorded in Aghribs. During the sampling season, Hyperomyzus lactucae (Linnaeus, 1758) and Brachycaudus helichrysi (Kaltenbach, 1843) are the most abundant species with 24.44 % and 21.8 % respectively. Three aphid species have been observed on potato leaves, namely Macrosiphum euphorbiae (Thomas, 1878), Aphis gossypii Glover, 1877 and Myzus persicae (Sulzer, 1776). The latter species was observed in all three study regions.

Highlights

  • The potato (Solanum tuberosum L.), is one of the main food resources in the world

  • This study was carried out in three localities of Tizi-Ouzou (Fig.1) in open field potato crops: The first, Resita variety, was planted on March 03rd, 2013, over an area of 3000 m2 is located in Tizi-Ouzou Center (36 ° 43ʹ 00" N and 4 ° 03ʹ 00" E) at 200 m altitude

  • The second, Fabula variety, was planted on December 27th, 2016, on an area of 300 m2 is located in Tizi Rached (36 ° 40ʹ N and 4 ° 11ʹ E) at 412 m altitude and the third, Timate variety, was planted on February 23th, 2017, on an area of 250 m2 is located in Aghribs (36 ° 48ʹ 08" N, 4 ° 19ʹ 22" E) at an altitude of 800 m

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Summary

Introduction

The potato (Solanum tuberosum L.), is one of the main food resources in the world. It remains the most consumed vegetable or field crop (Brillaud, 2008; Marchoux, 2008). This crop is subject to many pests, including aphids, they are small sap-sucking insects. The direct damage is caused by these pests to the crop by sap sucking, reducing the resources available for growth and development of the plant (Blackman and Eastop, 2000; 2006). Myzus persicae Sulzer, for example, is known to be a vector of more than 100 plant viruses (Blackman and Eastop, 2000) including Potato Virus Y (PVY), Potato Leafroll Virus (PLRV) or Cucumber Mosaic Virus (CMV) (Lin et al, 2016; Shi et al, 2016)

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