Colony of weevils safely in CABI Pakistan quarantine

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A colony of 200 Listronotus (Listronotus setosipennis) have been safely transported from South Africa to Pakistan. The stem mining weevil is a biological control agent against parthenium. CABI’s Dr Philip Weyl, with the help of Dr Lorraine Strathie (ARC-PPRI) successfully imported the weevils into the new quarantine facility at CABI’s Central and Western Asia (CWA) offices in Pakistan from South Africa.

The weevils arrived safely into their new home in Pakistan with “virtually no mortality” according to Dr Weyl. The insects have been put onto parthenium plants to start CABI’s own colony for host specificity testing of important plants in Pakistan.

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Collaborative writeshop produces pest management decision guides for invasive species in Pakistan

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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 causes of global biodiversity loss. Species can be introduced deliberately, through for example, fish farming, pet trade, horticulture, bio-control or unintentionally, through such means as land and water transportation, travel, and scientific research.

CABI, under its Action on Invasives programme, is working to manage the already existing and potential invasive species in Pakistan. Pest Management Decision Guides (PMDGs), through the Plantwise Knowledge Bank are practical, step-by-step tools for plant doctors and extension agents to give advice following the principles of integrated pest management (IPM).

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CABI publishes recommendations to fight scourge of parthenium weed in Central West Asia

Parthenium in Pakistan

CABI has published a new evidence note highlighting a list of recommendations to fight the highly-invasive parthenium weed which can have significant impacts on human health, the environment, livestock production and health and crop yields.

The report Parthenium: Impacts and coping strategies in Central West Asia, states that the aggressively-spreading weed, now classified as a ‘superior weed,’ is extremely prolific being capable of producing up to 30,000 seeds per plant – a key factor in its global spread to 48 countries including India and Pakistan.

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Zygogramma bicolorata released at selected sites in Pakistan as biological control of parthenium

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Parthenium hysterophorus is a highly destructive weed which has invaded and is widespread in around 48 countries in Africa, Asia, and the South Pacific. In Pakistan the weed is spreading rapidly westwards and southwards across both rural and urban landscapes, affecting native ecology and harming agriculture.

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Action on Invasives short course on classical weed biological control

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Zygogramma bicolorata, often referred to as ‘The Parthenium Beetle’ feeds on the leaves of Parthenium and is already being used as a biocontrol in a number of countries

Invasive species pose a serious threat to food security, biodiversity, water resources, human and animal health, and economic development. It is widely acknowledged that integrated control is the most effective strategy in managing invasive plants where it involves the use of herbicides, manual or mechanical control, and biological control agents in an integrated way. Last month, a short course on invasion biology and classical biological control of weeds was delivered at CABI in Pakistan.

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Parthenium awareness campaign reaches urban population in Islamabad

Parthenium in Pakistan

In Pakistan, the highly invasive weed Parthenium hysterophorus is not only a problem for rural areas, in fact it is of equal concern for urban residents as well. Known locally as ‘Gajar Booti’, Parthenium is a major pest of both cropped and non-cropped areas of Pakistan, causing severe economic, environmental, and health-related problems.

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