Shedding light on the biodiversity impacts of the tomato leafminer

The ecological effects of a widespread crop pest The tomato leafminer Tuta absoluta is one of the most widespread and impactful invasive crop pests in the world. First reported in Peru in 1914, the tomato leafminer is now recorded throughout South America, Africa and Europe and is estimated to infest 60% of all cultivated tomatoes worldwide. Recent studies…
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Collaborative writeshop produces pest management decision guides for invasive species in Pakistan

Invasive alien species (IAS) have devastating impacts on native biota, causing the decline or even extinction of native species, negatively affecting ecosystems. Invasive plants, animals, insects and microorganisms enter and establish in environments outside of their natural habitat. They reproduce rapidly, out-compete native species for food, water and space, and are one of the main…
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Two heads may be better than one: using multiple methods in the fight against Tuta absoluta

Tuta absoluta is a major invasive pest that causes devastating crop damage worldwide. Insecticides are heavily relied upon to help curb their numbers, but because of problems with increased insecticide resistance and the environmental impacts of insecticides, scientists are trying to find new ways of fighting this pest.
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CABI announces major commitments in fight against invasive species

Coinciding with its regional consultation with member states in Africa, CABI hosted a policy summit on invasive species in Gaborone, Botswana on 28 February. About 70 delegates representing policymakers, research, the private sector and civil society from across Africa gathered to learn about and discuss the impact of invasives as well as the technical and…
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CABI scientist helps provide a comprehensive review of research on Tuta absoluta in Africa

The South American tomato leafminer, Tuta absoluta, is a devastating invasive pest of tomato crops in several areas around the world, including Africa where the problem is greatest.  Given the wealth of research conducted on T. absoluta, a recent publication involving one of CABI’s scientists, Dr Marc Kenis, has compiled a comprehensive review of the…
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New Fall Armyworm Portal features as part of CABI’s upgraded Invasive Species Compendium

A new Fall Armyworm Portal, which includes the very latest reports and research regarding the devastating crop pest, now features as part of a major upgrade of CABI’s Invasive Species Compendium (ISC) launched today. The portal, created as part of the CABI-led Action on Invasives programme – funded by the UK’s Department for International Development (DFID) and the Netherland’s Directorate-General…
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Using roundworms to manage the Tomato Leaf Miner

Research recently published in the Journal of Economic Entomology has offered new insight into managing the tomato leaf miner (Tuta absoluta) using entomopathogenic nematodes (EPN). If the pest is not adequately managed, it can cause up to 100% crop loss in both field and green-house grown tomatoes. Also causing further concern is the increasing insecticide…
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Five invasive pests cost African smallholders $1 billion every year

New research by CABI reveals that just five invasive alien species are causing US$0.9 – 1.1 billion in economic losses to smallholder farmers across six eastern African countries each year, equating to 1.8% – 2.2% of total agricultural GDP for the region. These losses are expected to grow to $1.0 – 1.2 billion per year…
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Tackling invasive species to protect farmer incomes and livelihoods

“I have suffered [crop] losses amounting to 90%. I have no other source of income apart from tomato farming. I was relying on this crop to feed my family. I have nothing to do now other than try to think of what to do next.” Elias Kamuga, Farmer, Kenya Elias is a smallholder farmer from…
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Ebola and IAS

A conversation with Dr Arne Witt The recent outbreak of Ebola virus disease in West Africa made headline news around the world. During the outbreak this fatal disease, endemic to parts of Central and West Africa, rapidly spread from Guinea, Sierra Leone, and Liberia to other countries in the region such as Nigeria, Mali and…
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