Invasive tadpoles can recognise potential predators in new environments

By Natasha Kruger. Reblogged from The Conversation.

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The African clawed frog. Photo: author supplied

Invasive species have become an increasingly big threat to indigenous ones as the spread of alien animals and plants has accelerated with the growth of global trade. Some can be very destructive, while some live in close proximity without posing any sort of threat.

Understanding the behaviour of invasive species can provide clues on how to manage them, particularly in situations in which they threaten to wipe out indigenous species.

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CAB Reviews hits 1000 articles with fall armyworm paper

The CABI Blog

The CABI journal CAB Reviews has just published its 1000th paper, with a study examining how smallholder farmers can manage the devastating crop pest fall armyworm (FAW, Spodoptera frugiperda). The rapid spread of the FAW to sub-Saharan Africa and Asia is a major threat to smallholder maize farmers, with an average infestation level of 30% of plants across Africa (see CABI’s Fall Armyworm Portal).

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In his article, Allan Hruska of the Food and Agriculture Organization has examined published studies to see which management options are most likely to work for smallholders.

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CABI leads regional workshop on Pest Risk Analysis tool in Bangladesh

Workshop participants and CABI facilitators pose for a group photo in two rows.
Workshop participants and CABI facilitators (L-R from front row, 2nd from left) Claire Curry, Ganeshamoorthy Rajendra and Dr Manju Thakur (not pictured: Dr Malvika Chaudhary). (Photo: Ganeshamoorthy Rajendra)

Plant quarantine experts on Pest Risk Analysis (PRA) from four countries in South Asia joined together in Bangladesh last week (4th -5th September) for a workshop led by CABI on the new Pest Risk Analysis (PRA) decision support tool and workflow. The PRA tool workshop, which was made possible through CABI’s Action on Invasives programme, took place over two days in Dhaka, Bangladesh. The regional event, coordinated by Dr Malvika Chaudhary (Asia Regional Coordinator) with kind support from Ganeshamoorthy Rajendran (Country Coordinator, South Asia) brought together and welcomed participants from India, Sri Lanka, Nepal and Bangladesh, as well as delegates from FAO and SAARC, Bangladesh.

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Invasive species aren’t just a ‘first world problem’

By Jim Erickson-Michigan. Reblogged from Futurity.

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Opuntia ficus-indica (Photo: John Tann, Flickr)

Invasions from alien plants, animals, and pathogens threaten the economies of the world’s poorest nations, according to study.

One-sixth of the global land surface is highly vulnerable to invasion, including substantial areas in developing countries and biodiversity hotspots, according to the study published in Nature Communications.

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Invading Ireland: the coypu

By Dr Colin Lawton, National University of Ireland Galway

Coypu on a riverbank
Coypu are strong swimmers and live in burrows or nests near water; on riverbanks, lake shores, or wetlands. (Photo: Thorsten Krienke, Flickr)

One of the greatest threats to biodiversity is the invasion of alien species into an ecosystem.  These can occur through natural migrations as a result of recent habitat or climate change, or species can be introduced by human activities, both accidentally or deliberately.  Invasions are occurring at an increasing rate as a result of faster environmental change and increased movement by human populations.

Like all countries, Ireland has experienced a number of mammal invasions in recent decades.  Species such as the grey squirrel, greater white toothed shrew, bank voles and American mink have all become established, and in each case the opportunity to eradicate the animal and stop the invasion has long gone. Continue reading

Training of Trainers on awareness and management of Parthenium in Pakistan

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CABI staff conduct a rural awareness campaign with farmers on how to identify and manage Partheium safely. (Photo ©Asim Hafeez for CABI)

As one of its key priorities, CABI under the Action on Invasives programme aims to raise awareness about the threat of invasive species with the relevant government departments in Pakistan. In particular to address the issue of the highly invasive Parthenium weed. Through public awareness campaigns and sharing invasive management advice for better control practices, CABI wants to ensure communities are aware of this aggressive weed and its effects on agriculture and health.

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National emergency declared as Colombia confirms the presence of TR4 banana disease

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Tropical Race 4 (TR4) has been officially confirmed in Colombia (Photo: Arminas Raudys, Pexels)

The global banana industry is facing a new major threat. On the 8th August, the Colombian Agricultural Institute announced that it has confirmed the presence of a strain of Fusarium oxysporum f.sp. cubense, known as Tropical Race 4 (TR4) in the northern region of the country. Since then the Colombian government has issued a national state of emergency, destroying crops and quarantining plantations in an attempt to postpone the spread of the fungus until a suitable preventative plan can be implemented.

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