Emergence of Solanum bonariense L. (Solanaceae) as a new invasive species in Algeria

Lahouaria Mounia Mansouri, Abdenour Kheloufi, Madjda Razane Rihane, DOI: 10.46793/BiolNyss.16.2.20M

Abstract


Solanum bonariense L. (Solanaceae), a shrub native to South America, is here recorded for the first time as a naturalized and potentially invasive species in Algeria. Field surveys and herbarium investigations (2022–2025) revealed its occurrence in multiple coastal and peri-urban sites across eastern, central and western regions, with the largest stands at the western region. Populations were established in ruderal habitats such as agricultural lands, roadsides, railways, and abandoned lots, as well as in semi-natural scrublands and rocky slopes, illustrating a broad ecological amplitude. The species was frequently observed co-occurring with invasive congeners (S. elaeagnifolium, S. linnaeanum) and ruderal taxa (S. nigrum, S. villosum), suggesting similar invasion dynamics. A comparative morphological analysis and an identification key are provided to improve recognition and management of invasive Solanum species in Algeria. The documented westward range extension, coupled with evidence of viable, regenerating populations, signals an emerging phytosanitary threat. Early detection, systematic monitoring, and targeted control measures are urgently required to prevent further spread and mitigate ecological, livestock and economic impacts.


Keywords


Solanum bonariense; invasive plants; Mediterranean flora; weed risk; Solanaceaea

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References


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