Translate

Friday 24 January 2020

No Surprise Introductions

It appears that introducing any new species into a habitat always backfires.

Cane Toad Selfie Of Self Congratulation

Cane Toads into Australia (with over 1.35 billion of the critters in the country), is the current standout example of such disastrous imports. It has also been found in Caribbean, the Philippines, Fiji, New Guinea and the USA - it appears to be an unstoppable amphibian.

But there are less well known examples such as:

The Kudzu Vine – also known as the ‘mile-a-minute’ plant which grows up to 30cm a day, and mature vines can reach 30m long. Its native to Japan and south-east China, it was imported to the USA, but has turned up in Australis, Canada and northern Italy, as well as Fiji. Its now declared as a Bio hazard in New Zealand and many other countries and eradication measures are expensive and largely ineffective.

The Harlequin Ladybird which introduced in Europe and North America to control aphids but now outcompetes with and also eats native ladybirds.

Japanese Knotweed - Suffice to say that this is similar to the Kuzdu Vine and that in the UK it is an offence under section 14(2) of the Wildlife and Countryside Act 1981 to "plant or otherwise cause to grow in the wild" any Japanese Knotweed. With an on-the-spot fine or be prosecuted. It is also classed as "controlled waste" and requires disposal at licensed landfill sites. It was decided in 2014 to release a Japanese psyllid insect, Aphalara itadori to try and control the Knotweed.

Signal Crayfish - In the 1970's, the British government introduced the Signal crayfish from North America to UK waters for export as a crayfish plague had ravaged native white-clawed crayfish populations in Europe.  Unfortunately it is a carrier of crayfish plague and is thought to be responsible for passing the deadly disease to the native white-clawed crayfish.
  
Coypu Plague In Italy ... But Perhaps Not For Long?

The latest such example of these pests are the Coypu in Italy. Introduced to be farmed it soon spread and is now a major invasive pest in Northern Italy, especially the Po Valley. The solution according to Michele Marchi, a local Mayor is for the locals to hunt and eat them in restaurants. He claims to have tried it and found them to be almost better tasting than local rabbits.

Given the local propensity for hunting in Italy, where the winter months resonate with the sound of gunfire, I wouldn't give much fur for the Coypus chances.

No comments:

Post a Comment

All comments are welcomed, or even just thanks if you enjoyed the post. But please make any comment relevant to the post it appears under. Off topic comments will be blocked or removed.

Moderation is on for older posts to stop spamming and comments that are off topic or inappropriate from being posted .... comments are reviewed within 48 hours. I don't block normal comments that are on topic and not inappropriate. Vexatious comments that may cause upset to other commentators, or that are attempting to espouse a particular wider political view, are reviewed before acceptance. But a certain amount of debate around a post topic is accepted, as long as it remains generally on topic and is not an attempt to become sounding board for some other cause.

Final decision on all comments is held by the blog author and is final.

Comments are always monitored for bad or abusive language, and or illegal statements i.e. overtly racist or sexist content. Spam is not tolerated and is removed.

Commentaires ne sont surveillés que pour le mauvais ou abusif langue ou déclarations illégales ie contenu ouvertement raciste ou sexiste. Spam ne est pas toléré et est éliminé.

Followers

Blog Archive

Its a Pucking World

Its a Pucking World
Dreamberry Wine Cover

About Me

My photo
A middle aged orange male ... So 'un' PC it's not true....