Issus kabylicus Dlabola, 1989 is recorded for the first time from Tunisia and I. vaucheri Gnezdilov, 2017 - Spain. redescribed illustrated. Male female genitalia of coleoptratus (Fabricius, 1781) are described illustrated based on specimens Germany (type locality). Relationships African species discussed. Close relationships climacus Fieber, 1876 to Madeiran Canarian revealed.

This study collects data from the literature and updates our Zelus renardii Kolenati, 1856 (Leafhopper Assassin Bug, LAB) prey knowledge. The consists of ca. 170 entries encompassing years to 2021. reduviid originated in Nearctic region, but has entered acclimatised many Mediterranean countries. Our quantitative predation experiments—in laboratory on caged plants plus field or environmental observations—confirm that LAB prefers a selected array prey. Laboratory tests living targets...

Abstract Winged morphs of aphids were investigated from 2002 to 2004 in 4 Tunisian regions potato seeds production order know the aphid diversity and potential vectors Potato Virus Y. This is a very important contribution knowledge fauna Maghreb. A total 50,030 caught using yellow water traps one suction trap. 130 taxa identified including 103 species. Ten species are well represented all prospected typical also observed every region. Some differences appeared between which discussed...

The R81T mutation conferring target-site resistance to neonicotinoid insecticides in Myzus persicae was first detected France and has since spread across much of southern Europe. In response recent claims control failure with neonicotinoids Tunisia, we have used a molecular assay investigate the presence distribution this samples collected from six locations crops attacked by M. persicae.The allele containing present at substantial frequencies (32-55%) aphids between 2014 2016 northern...

Essential oils are a mixture of various compounds that can have acted against insect pests through complex mechanisms. Their constituents were shown to be potent source biological pesticides. The aims the present study characterize chemical composition and evaluate aphidicidal activities Tunisian Melaleuca styphelioides leaves essential oil. Fumigant contact toxicities determined three major aphid infecting citrus trees: Aphis gossypi, spiraecola Myzus persicae. this oil was characterized by...

Essential oils (EOs) of Mentha pulegium L., (Lamiales: Lamiaceae) and Pistacia lentiscus (Sapindales: Anacardiaceae) were studied for their insecticidal activities against the spirae aphid Aphis spiraecola Patch cotton gossypii Glover (Both Hemiptera: Aphididae). The results showed that both EOs toxic to species. mortality rates caused by M. P. are 98 % 52 %, respectively A. 94 70 gossypii. LC50 applied 478 759 ppm, respectively. 547 490 Interestingly, there no differences between toxicity...

In the context of an epidemiological study on Potato virus Y (PVY) in potato crops, Solanum elaeagnifolium Cav. was included weeds prospected. Surveys were carried out four seed areas: Cap Bon, Manouba, Jendouba and Kairouan. S. found all areas, except Bon. Virus‐like symptoms observed some plants field, i.e. leaf mottling curling. Aphids collected these identified as Myzus persicae Aphis fabae , both known to colonize potatoes transmit standard PVY N isolate with transmission efficiencies...

We used molecular assays to diagnose resistance pyrethroids and pirimicarb in samples of Myzus persicae from field crops or an insect suction trap Tunisia. Genotypes for loci were related ones polymorphic microsatellite order investigate breeding systems patterns genetic diversity, inform management tactics.The kdr mutation L1014F conferring pyrethroid was found all samples. The M918T s-kdr also occurred most samples, but only conjunction with kdr. discovered a previously unreported genotype...

Potato tuber necrotic ringspot disease (PTNRD) (Beczner et al., 1984) is now found worldwide. The causal agent has been characterised as a variant of virus Y (PVY), designated PVYNTN. Most PVYNTN isolates display recombinant genome with exchanges sequences in the HC-Pro, NIa and CP genes between PVYN PVYO (Glais 2002; Nie & Singh, 2003). In 2005, PTNRD symptoms were observed autumn crops southern Tunisia. Many harvested tubers displayed superficial ring spots. Plantlets grown from collection...

The massive use of synthetic insecticides strongly affects the level insecticide resistance in populations Myzus persicae worldwide. selection target site insensitivity-mutations is particularly worrying areas where agro-industrial crops are vulnerable to attacks aphids that vector viruses, as case Tunisia. Knowledge mechanisms evolved locally this aphid pest a prerequisite improving and retaining sustainability integrated management strategies.Target mutations were surveyed several M....

Leafhoppers (Hemiptera: Cicadellidae) are important agricultural pests and potential vectors of several viruses phytoplasma diseases. The Chickpea chlorotic dwarf virus (CpCDV) is reported in Tunisia transmitted by leafhoppers. In order to identify insect species transmitting the Tunisia, a survey was carried out during 3 years (2019–2021) fields tomatoes, pepper, melon, watermelon, chickpea six governorates (Tunis, Nabeul, Sousse, Monastir, Mahdia, Kairouan). Morphological molecular...

Pandora neoaphidis and Entomophthora planchoniana (phylum Entomophthoromycota) are important fungal pathogens on cereal aphids, Sitobion avenae Rhopalosiphum padi. Here, we evaluated compared for the first time virulence of these two fungi, both produced in S. cadavers, against aphid species subjected to same exposure. Two laboratory bioassays were carried out using a method imitating entomophthoralean transmission field. Healthy colonies exposed conidial shower P. or E. planchoniana, cases...

The natural occurrence of entomophthoralean fungi pathogenic towards aphids on cereal and potato crops was investigated in the years 2009, 2010, 2011. Infected were sampled three bioclimatic zones Tunisia (Beja, Cap bon, Kairouan) fungal species determined based morphological characters such as shape, size, number nuclei primary conidia. Polymerase Chain Reaction (PCR) internal transcribed spacer 1 region (ITS1) used to verify determination. Both methods gave consistent results we documented...

The aim of this work is to analyze the chemical composition Cymbopogon citratus, Salvia officinalis and Origanum majorana essential oils (EO) evaluate their repellent effects on economically significant aphid species. hydrodistillation yields plant's aerial parts were 0.45%, 0.32% 0.25% for O. majorana, S. C. citratus respectively. Chemical analysis by GC-MS identified 87.6%, 100% 97% EO was mainly composed α-thujone (25.7%) camphor (18.4%), while major compounds neral (26.4%) geranial...

The present study is an update on the situation of potential vectors Xylella fastidiosa in Tunisia. Investigations nine Tunisian regions (Nabeul, Bizerte, Béja, Jendouba, Zaghouan, Kairouan, Ben Arous, Tunis and Manouba) from 2018 to 2021 allowed for observation 3758 Aphrophoridae among a total 9702 Auchenorrhyncha individuals collected by sweep net. Four species were identified with Philaenus tesselatus as most abundant (62%), followed Neophilaenus campestris (28%), lineatus (5%)...

Summary. The natural occurrence of fungal pathogens aphids and their ecological host range was investigated in Tunisia from 2009 to 2012. survey focused on aphid infesting different crops weeds included 10 species. Samples were collected eight agricultural sites belonging three bioclimatic zones. Four the phylum Entomophthoromycota found occur naturally Tunisian ecosystems: Pandora neoaphidis (Entomophthorales: Entomophthoraceae), Entomophthora planchoniana Conidiobolus obscurus...

Aphid species and their natural enemies were identified in a citrus orchard the Cap Bon region of Tunisia 2014–2016. Aphids within same had previously been studied 1991–1992, allowing comparison populations over 20+ yr. Ten aphid while only four observed This reduction diversity could be linked to temperature rainfall changes attributed climate change, interspecific competition, increased occurrence hyperparasitoïds, or any combination these other factors. Aphis spiraecola Patch gossypii...

The black bean aphid, Aphis fabae Scopoli is a polyphagous aphid causing significant damage to several cultivated and uncultivated plants. In the present work, we have used COI barcoding distinguish between three subspecies of A. fabae, frequently found in Tunisia, namely f. solanella cirsiiacanthoidis. Results our study revealed that was efficient generate haplotypes discriminating from two remaining subspecies. Indeed, among seven haplotypes, identified named H1–H7, five were exclusively...

The peach potato aphid, Myzus persicae (Sulzer), is a worldwide pest of many crops, and the most important aphid crops in Tunisia, mainly due to virus transmission, for which insecticides are frequently applied. We studied genetic structure M. populations order further our understanding biotic abiotic factors shaping predict their evolutionary responses present management practices. monitored orchards seed different seasons regions from 2011-2013 2016 (19 populations), assessing diversity at...