Effet du climat et de l’exposition sur la dynamique des populations de la cochenille violette,<i>Parlatoria oleae</i>Colvée (Hemiptera : Diaspididae), en conditions arides

Chafaa, Smail; Biche, Mohamed; Chenchouni, Haroun; Sellami, Mahdi; Bachir, Abdelkrim Si

doi:10.1080/00379271.2013.856203

Cited by 12 publications

(7 citation statements)

References 3 publications

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“…The climatic parameters considered were computed for each season as average/sum of the daily data of 45 days prior the trapping period. This period duration is estimated to be appropriate for affection both the biological cycle and population dynamics of most insects of the region ( Chafaa et al, 2013 ; Idder-Ighili et al, in press ). All correlations were carried out as pairwise two-sided tests using the function ‘rcorr.adjust’ in R ( R Core Team, 2015 ).…”

Section: Methodsmentioning

confidence: 99%

Spatiotemporal diversity, structure and trophic guilds of insect assemblages in a semi-arid Sabkha ecosystem

Chenchouni

Menasria

Neffar

et al. 2015

PeerJ

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The current study highlights some knowledge on the diversity and structure of insect communities and trophic groups living in Sabkha Djendli (semi-arid area of Northeastern Algeria). The entomofauna was monthly sampled from March to November 2006 using pitfall traps at eight sites located at the vicinity of the Sabkha. Structural and diversity parameters (species richness, Shannon index, evenness) were measured for both insect orders and trophic guilds. The canonical correspondence analysis (CCA) was applied to determine how vegetation parameters (species richness and cover) influence spatial and seasonal fluctuations of insect assemblages. The catches totalled 434 insect individuals classified into 75 species, 62 genera, 31 families and 7 orders, of which Coleoptera and Hymenoptera were the most abundant and constant over seasons and study stations. Spring and autumn presented the highest values of diversity parameters. Individual-based Chao-1 species richness estimator indicated 126 species for the total individuals captured in the Sabkha. Based on catch abundances, the structure of functional trophic groups was predators (37.3%), saprophages (26.7%), phytophages (20.5%), polyphages (10.8%), coprophages (4.6%); whereas in terms of numbers of species, they can be classified as phytophages (40%), predators (25.3%), polyphages (13.3%), saprophages (12%), coprophages (9.3%). The CCA demonstrated that phytophages and saprophages as well as Coleoptera and Orthoptera were positively correlated with the two parameters of vegetation, especially in spring and summer. While the abundance of coprophages was positively correlated with species richness of plants, polyphage density was positively associated with vegetation cover. The insect community showed high taxonomic and functional diversity that is closely related to diversity and vegetation cover in different stations of the wetland and seasons.

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Section: Methodsmentioning

confidence: 99%

Spatiotemporal diversity, structure and trophic guilds of insect assemblages in a semi-arid Sabkha ecosystem

Chenchouni

Menasria

Neffar

et al. 2015

PeerJ

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“…Several studies have investigated the natural history and population dynamics of certain olive tree pests such as Parlatoria oleae (Holgado and Gasparini 2008;Chafaa et al 2013aChafaa et al , 2013b, Bactrocera oleae (Petacchi and Minnocci 1994), Euphyllura olivina (Amin et al 2013), and Prays oleae (Kumral et al 2005). However, few studies have been carried out in Algeria and northern Africa on the biodiversity of insects subservient to olive groves, particularly under arid and semiarid conditions.…”

Section: Introductionmentioning

confidence: 99%

“…It is noteworthy mentioning that climate is the main driver that controls the distributional range of insects as well as the seasonal variation in their community composition (Chenchouni et al 2015;Chenchouni 2017). Indeed, several studies investigating agrosystems in the drylands of Algeria demonstrated that climate types and climatic parameters are the key determinants of population dynamics, breeding and migration phenology, adult flight, and ethological activities in insects (Chafaa et al 2013a(Chafaa et al , 2013bIdder-Ighili et al 2015). Therefore, we expect that biodiversity traits of insect communities differ beneath different climates of the agrosystems on which they depend.…”

Section: Introductionmentioning

confidence: 99%

Diversity of insects associated with olive (Oleaceae) groves across a dryland climate gradient in Algeria

2019

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This study investigated insect diversity of olive (Olea europaea Linnaeus (Oleaceae)) groves grown in arid and semiarid climates in northeastern Algeria. Using several sampling techniques, a total of 1326 insect specimens were collected and identified into 151 species, 124 genera, 65 families, and 10 orders. Hymenoptera and Coleoptera were quantitatively the most abundant, whereas the dominant functional feeding groups were phytophages then predators. The entomofauna included several olive pests such as Bactrocera oleae (Rossi) (Diptera: Tephritidae), Parlatoria oleae (Colvée) (Hemiptera: Diaspididae), Euphyllura olivina (Costa) (Hemiptera: Liviidae), and Liothrips oleae Costa (Thysanoptera: Phlaeothripidae). Although insect diversity parameters recorded for both observed and expected species richness were higher in olive groves grown under semiarid compared with arid climate, the completeness rate of species richness obtained using the nonparametric incidence estimators was higher in arid olive groves. Generalised linear models showed that the number of individuals and species richness varied significantly between climates (P < 0.01), whereas the variation of the rest of diversity parameters was not significant. Diversity traits of insect assemblage of each climatic region were positively correlated. Besides, the Mantel permutation test revealed similar patterns (r = 0.91, P < 0.0001) between correlation matrices of the two climates. When increasing the number of samples, species richness extrapolation revealed that diversity is expected to increase by 130% in olive groves grown under arid climate and 93% in semiarid climate. These increases are related to continuous appearance of rare and scarce insects as demonstrated by species rarefaction curves. Even with high evenness values of insect communities, similarity was low between climate indicating the rarity and scarcity of populations.

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“…This remains the first study to be conducted on the ecology of I. purchasi in Algeria. Although, much research has been carried out on the bioecology of scale insects, mainly citrus, especially on Diaspines (Biche, Sellami, 1999;Biche et al, 2012;Chafaa et al, 2013aChafaa et al, , 2013bBelguendouz et al, 2014;Aroua et al, 2019;Aroua et al, 2020), Pseudococcins (Aroua et al, 2019), Asterolecanins (Menzer et al 2016 and Lecanins (Biche et al, 2012). We provide information on some bioecological parameters such as population dynamics and spatial and temporal distribution of the pest on the tree, which will be useful for better management of this pest.…”

Section: Introductionmentioning

confidence: 99%

Ecology of Icerya purchasi Maskell, 1879 (Homoptera: Margarodidae) on clementine trees at Sidi Moussa (Central Mitidja, Algeria)

Boukhobza¹,

Belguendouz²,

Biche³

2020

Ukr J Ecol

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In order to establish better communication between applied entomology and fundamental ecology to consider an integrated control against the Australian cochineal Icerya purshasi Maskell, 1879 (Homoptera: Margarodidae) the most formidable pest for citrus fruits, a study on the Spatio-temporal dynamics of the parasite were followed for two years in a clementine orchard in Western Mitidja in Algeria. Ten-day samples of leaves and twigs were carried out from 2017 to 2018. The level of I. purchasi infestation is very high throughout the study period when the minimum threshold exceeds 400 individuals, with 3 intense periods of infestations: spring, summer and fall during the two years. The population of young larval stages is the largest during the two years of study with 13,323 individuals (62.79%) and 13,968 individuals (54.39%) in 2017 and 2018 respectively against 7896 individuals (37.21%) in 2017 and 11,715 individuals (33.50%) in 2018 for adults. Tukey's pairwise comparison test on the companion plan shows that the 2018 one is the most important from an overall effective point of view (ANOVA p≤1%, Tukey's test p≤1%). The Cross-Correlation Test shows the presence of a time lag (p=0.0371, p≤5%) and the maximum overall abundance was reported around mid-July for both campaigns. Statistical tests show that females show the same fertility during the two campaigns (ANOVA, p≤5%). peak fertility in 2017 was reported in mid-June, while peak fertility was reported in mid-July for the 2018 campaign. The Cross-Correlation Test shows a very significant time lag from one month to another (p=0.0064, p≤1%).

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Effet du climat et de l’exposition sur la dynamique des populations de la cochenille violette,Parlatoria oleaeColvée (Hemiptera : Diaspididae), en conditions arides

Cited by 12 publications

References 3 publications

Spatiotemporal diversity, structure and trophic guilds of insect assemblages in a semi-arid Sabkha ecosystem

Spatiotemporal diversity, structure and trophic guilds of insect assemblages in a semi-arid Sabkha ecosystem

Diversity of insects associated with olive (Oleaceae) groves across a dryland climate gradient in Algeria

Ecology of Icerya purchasi Maskell, 1879 (Homoptera: Margarodidae) on clementine trees at Sidi Moussa (Central Mitidja, Algeria)

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