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Diversity of Aphids Associated with Field and under Greenhouse Crops (Wheat, Barley and Chili Pepper) across the Dryland Climate in Algeria

Bakroune Nourelhouda, Hachemi Ali, Ouamane Abdelmoneim Tarek, Boultif Meriem, Rouahna Houria

Journal of Ecological Engineering

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2023

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Vol. 24, nr 4

99--109

EN

The aim of this study was to investigate the diversity of aphids associated with the field and under greenhouse crops in an arid climate in southeastern Algeria (Biskra province). Using yellow basins for the insects sampling, a total of 6683 specimens of aphids were collected and identified into 33 species, five (05) subfamilies: Aphidinae, Pemphiginae, Chaitophorinae, Pterocommatinae, and Greenideinae; and six tribes: Aphidini, Macrosiphin, Pemphigini, Panaphidini, Chaitophorini and Greenideini, and 22 genera. The Macrosiphini tribe is quantitatively most dominant with 20 species (61%) of the inventoried aphid population, followed by the aphidini which groups together 9 species representing 27% of the aphids inventoried. The other tribes are less represented, including one species for each tribe (12% in total). Aphis gossypii was the predominant species 29.67% of the inventoried species, followed by Rhopalosiphum maidis (15.22%) and Rhopalosiphum padi (15.07%). In terms of total wealth (S), there was a strong and positive correlation between the diversity of aphids and crops (R2 = 0.73), and also a significant relationship (df = 15, Pr > F = 0.024). Shannon’s index spatial interpolation indicates a higher diversity on agricultural lands in the study area. Shannon’s diversity and evenness index values were greater in pepper under greenhouse in Dhibia station (H′ = 2.01, E = 0.84) compared to barley and wheat, in El Haouch and Saada, respectively (H′ = 1.18, E = 0.30 and H’ = 1.45, E = 0.21).

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Coexisting aphid (Hemiptera: Aphididae) and ant (Hymenoptera: Formicidae) communities : interdependence in various habitats

Depa Ł.

Polish Journal of Ecology

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2011

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Vol. 59, nr 4

835-840

EN

The paper presents the comparison of species diversity and evenness indices calculated for coexisting communities of aphids and ants. In six study areas, localised in Upper Silesia (Poland), representing acidophilous oak-forest (Molinio caeruleae - Quercetum roboris), moist meadow (Molinietum caeruleae) and xerothermic grassland (Sileno-Phleetum) the community structure of aphids and ants (species number and abundance) was determined. The number of ant nests and aphid colonies was determined by searching the squares of 25 m2 during vegetation seasons in 2006 and 2007. This provided the base to calculate the Shannon.s diversity index and evenness index of both groups. Spearman's rank correlation analysis showed significant correlation only in the case of the number of species of both groups in a particular study area. It showed no significant correlation of values of diversity and evenness indices; however, considerable differences of values between both groups in various habitat types were recorded. The results are discussed with reference to the habitat history and maintenance, also reflecting the mutualistic relationship between ants and aphids.

3

Liczebność mszyc (Hom. Aphididae) w konwencjonalnych i ekologicznych uprawach ziemniaków oraz pszenicy ozimej na tle składu jakościowego roślin

Kelm M., Spiak Z., Fostiak I., Romanowska M.

Journal of Research and Applications in Agricultural Engineering

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2008

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Vol. 53, nr 3

133-137

PL

W latach 2002-2004 prowadzono badania porównawcze nad występowaniem mszyc na konwencjonalnych i ekologicznych uprawach ziemniaków oraz pszenicy w trzech miejscowościach na terenie Dolnego Śląska. W przypadku ziemniaków stwierdzono istotnie wyższe nasilenie mszyc na uprawach ekologicznych. Analizy chemiczne naci ziemniaczanej wykazały nieznacznie wyższą zawartość azotu i białka oraz dwukrotnie niższą zawartość fosforu w roślinach z upraw ekologicznych. Odwrotnie na plantacjach pszenicy, więcej mszyc notowano w konwencjonalnym systemie uprawy. Wynikało to prawdopodobnie ze znacznie wyższej zawartości azotu i białek w słomie i ziarnie pszenicy uprawianej metodą konwencjonalną. Dodatkowo w ziarnie tej pszenicy było mniej potasu, ale zawartość fosforu była trzykrotnie wyższa.

EN

In years 2002-2004, occurrence of aphids on conventional and organic crops of potato and winter wheat in three localities in Lower Silesia were observed. In case of potato, there was significantly higher number of aphids on organic crops than on conventional ones. Chemical analysis show higher content of protein and nitrogen and twice lower content of phosphorous in potato tops from organic crops. Reversely, there was higher number of aphids on wheat plants grown in conventional than organic farms. Probably it resulted from much higher content of protein and nitrogen in plant tissue from conventional crops. Additionally, in grains of this wheat there was less of potassium and three times more of phosphorus.