AUSTRALIA / SCIENCE: A salute - and solution - to the Australian bush fly

Demonstrating the Aussie wave, aka Australian salute: http://i.imgbox.com/achP9bim.gif

Reporting on the experimental use of a virus to control burgeoning numbers of European carp Down Under, the Wall Street Journal lists "five animals that have gone wild in Australia". Four species are also European imports, but the fifth - flies, of the "bush" type that pesters everyone outdoors  - certainly isn't:

"... it's likely the fly got to Australia in an Aboriginal boat, the same way the dingo got here. In that case, the bush fly might have arrived in Australia as long as 45,000 years ago," says Jim Heath in his Seuss-like-titled 1989 book "The Fly In Your Eye"*

Heath explains that the bush fly needs protein to develop its eggs and is quite happy to find it in human tear ducts, noses, saliva and sweat, not to mention blood and raw meat; hence the plague of them at barbecues. As beef farming grew so did the fly population, feeding and breeding on the droppings of Australia's 28 million cattle. At up to 12 cowpats daily per animal, times up to 2,000 larvae per pat, the herds are potentially fostering quadrillions of flies.

Not just bush flies. Initial efforts to control flies focused on agricultural pests such as the blood-sucking buffalo fly and involved chemicals, to which the insects are increasingly becoming immune. 

So attention turned to biological controls, and this is where the dung-beetle comes in. Dr. George Bornemissza of the Australian CSIRO looked at native beetles and determined that they couldn't cope, so in April 1967 he began a project to import other species:

http://trove.nla.gov.au/newspaper/article/131790650?searchTerm=Bornemissza&searchLimits=l-category=Article

The first foreign beetles were from Hawaii, released in Queensland on 30 January 1968. The dung-beetles disrupt fly-larval development by shredding and burying manure - which also improves soil quality and helps reduce contamination of run-off water, say the Kiwis, who are using the same strategy.

Because of Australia's diverse climate it was originally estimated that 160 different species would be required; in practice, "a total of 53 species were introduced and of these 23 have established," says CSIRO.

Unfortunately these species tend to cease their activity in early spring before the new season's flies begin to arrive, so two more kinds that are active at that time were introduced in 2012 from France and Spain to southern Australia by Dr Bernard Doube. The entomologist has been calling for a $50 million program to introduce 25 additional species, money which he says will multiply into several billions-worth of extra pastural productivity.

The real salute, then is reserved for the dung-beetle:

http://2bgreener.com/wp-content/uploads/2016/01/Dung-Beetle.jpg

* Full text and illustrations on-line at: http://www.viacorp.com/flybook/fulltext.html

VANUATU: Trouble in Babel

Map: Google

"Florence Lengkon led a march through town and up to Parliament in which nearly a thousand people demonstrated their desire to see an end to violence against women," reported the Vanuatu Daily Post yesterday.

The trigger for this was an abduction and beating Lengkon received at the hands of bus and taxi drivers nearly a fortnight ago, following critical remarks she had posted on a community page on Facebook. She had called them arrogant and unprofessional for the way they had squabbled among themselves when trying to get business from visiting tourists (and for stoning a tour bus). Lengkon herself runs a helicopter business in Port Vila.

There are many facets to this story: risks in social media discussions, attitudes to women, the poverty that tempts men to misbehave when the chance to make some money presents itself, the great disparity between them and rich Westerners passing by in their floating castle, tourism itself in the form of a brief condescending gawp at other cultures, the question of how small Pacific nations should develop and sustain themselves, what will happen to them if there is a long global recession, etc.

For those who aren't involved, one aspect of the story that pops out is the fact that Lengkon's comments were written in Bislama, one of the three official languages of the Republic.

Bislama is a kind of pidgin English widely used there because the country has over 100 different languages and dialects: "Vanuatu is considered to be the country with the highest density of languages per capita in the world, with an average of about 2,000 speakers for each indigenous language; only Papua New Guinea comes close," says Wikipedia.

There is probably a connection to PNG: Vanuatu may have been colonised by Autronesian speakers as early as 4,000 - 6,000 years ago in the eastward expansion from what is now Papua, which itself saw the arrival of humans some 60,000 years ago, together with other movement into Australia.

Many languages of small communities are considered "endangered" - there was a UNESCO conference about this in 2008. But perhaps preserving them is a futile, Canute-like attempt.

Not to worry; in the far future, when our current energy-rich civilisations are forgotten, there will be isolation and cultural-linguistic variation again, just as island wildlife mutates to take advantage of local niche opportunities.

VANUATU: Lavatory humour

http://bestpublictoilet.org/cause/best-public-toilet-in-all-south-pacific/

Humour sells. Vanuatu and a church ministry from near Melbourne, Australia have launched a project with multiple purposes: sanitation, fresh water collection, tourism and economic development.

So, a loo with its own website. Any good toilet-themed jokes or headlines?