Distribution of the ladybird Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) in Algeria and life history parameters in outdoor rearing

Authors : Mohamed Amin Lakhal, Faiza Marniche, Salaheddine Doumandji, Şükran Oğuzoğlu, Oldrich Nedved

Pages : 279-290

Doi:10.16970/entoted.1660027

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Publication Date : 2025-09-30

Article Type : Research Paper

Abstract :The invasive ladybird Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) has been recorded in several regions in Algeria. The aim of the study was to provide detailed data on location, date, host plant and prey species. The previously unpublished distribution data include records from 2017 to 2021. As host plants, Harmonia axyridis utilized wild herbaceous plants, ornamental shrubs, fruit trees, an evergreen tree, and a vegetable, but no conifers. The sampling dates span most of the year, most observations were made in coastal lowlands up to 500 m. The second aim is to measure the developmental time, survival, fertility and progress of oviposition of H. axyridis in outdoor location in El Harrach region (central coastal Algeria) in autumn 2018. These life history parameters were related to the daily average temperatures under outdoor conditions. The average developmental time (egg to adult) was 40.3±1.6 days. The developmental times of individual larval instars showed increasing values expressed as ratio 1:1.42:2.95:3.63, The maximum daily fertility fluctuated between 19 and 21 eggs but ceased when mean daily temperatures dropped below 15°C.
Keywords : Afrika, doğurganlık, üreme, uğur böceği, sıcaklık

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