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Monday, September 27, 2021

Scientists Hung Rhinos Upside-Down From Helicopters… For Science

Each yr, a choice of apparently bizarre and pointless scientific experiments obtain the Ig Nobel Prize. Awarded by the science humor journal Annals of Improbable Research, the prize honors initiatives that “first make people laugh, and then make them think”.


A current research that suspended rhinos upside-down by their ankles from a helicopter will need to have been a shoe-in for the award’s judges, securing the 2021 Ig Nobel Transportation Prize. But whereas hanging rhinos produce spectacularly absurd pictures, behind the award and the research lies a critical enterprise.

Rhinos are in hassle. There are 5 species of rhino, and all are endangered. The three-tonne white rhino is the least endangered, but there are nonetheless solely an estimated 20,000 of them left within the wild. The species hung upside-down within the research is the black rhino, weighing in at 1.5 tonnes and with an estimated inhabitants of simply 5,000.

In makes an attempt to guard rhino populations, conservationists have tried dehorning (to attempt to make rhinos much less fascinating to poachers), translocation (shifting rhinos, together with upside-down by way of helicopter), and even resurrection (creating embryos from the eggs and sperm, and even the DNA, of lifeless people).

We translocate rhinos as a result of they stay inside guarded, fenced areas to maintain them monitored – and guarded, in idea, from poaching for rhino horn, their major menace. But this prevents animals from colonizing new areas, recolonizing vacant areas, or mixing genes between areas.

So conservationists must lend a serving to hand – or helicopter – to position rhinos into new areas. But till the Ig Nobel Prize-winning research, we weren’t completely positive whether or not this upside-down transportation was truly protected for the rhinos concerned.


Hanging herbivores

The seize and translocation of enormous mammals will be harmful and disruptive to the welfare of the animals involved. Big African mammals, together with elephants, giraffes, and rhinos, are physiologically delicate.

The complete seize and translocation course of may end up in psychological and physiological stress. If such animals are given too nice a tranquilizer drug dose, or are left within the fallacious place below tranquilization, they’ll die.

Historically, wildlife translocation strategies have been casual and experimental, with profitable strategies spreading by phrase of mouth. Increasingly, this ad-hoc strategy has been changed by formal scientific analysis, both supporting perceived knowledge, or offering novel improvements.

So it is necessary, for animal well being and welfare causes alone, for the procedures utilized to catch and transfer massive animals to be as protected and non-disruptive as attainable.

For numerous years, African rhinos have been translocated by hanging them upside-down suspended from a helicopter, blindfolded and below tranquilization. As properly as enabling the seize and short-distance switch of rhinos from areas inaccessible by street, transport by helicopter can imply shorter journey occasions, so it may be preferable for the rhino the place it is sensible to take action.


But nobody had ever established whether or not hanging upside-down is dangerous to rhinos. Sure, rhinos seem superb when woken up at their last vacation spot – however are they actually OK thereafter?

This is the place science is available in. It would possibly sound humorous to intentionally hold 12 black rhinos upside-down for 10 minutes simply to observe their physiology. But if no person does the analysis, no person is aware of whether or not it is a protected method to transport an endangered animal.

The Ig Noble Prize-winning research in contrast the respiratory perform and metabolic results of rhinos once they have been hung by their ankles to when the identical animals have been mendacity on their sides.

The researchers discovered that the respiratory effectivity of rhinos hung upside-down is, if something, barely higher than when rhinos are laid on their facet throughout tranquilization. So, the method is affirmed as at the least nearly as good as conventional strategies of transport.

Rhino relocation

I’ve been concerned in quite a few white rhino seize and translocation operations in South Africa for my very own analysis: amassing blood and saliva samples to judge physiological stress related to seize.

The groups that I labored with additionally used helicopters, however solely to dart the rhino with a tranquillizer from the air. The rhinos have been then woken up as quickly as attainable earlier than strolling them, blindfolded and ear muffed, onto crates for street transportation by truck to places many hours away.


During long-distance rhino transportation, it is neither economical nor wholesome for the rhino to stay tranquilized – so street transport is most popular.

While being up near such spectacular beasts is humbling, and the seize expertise considerably thrilling, my motivation for being there was the science: amassing information on the results of seize, to finally inform and enhance wildlife conservation.

Nevertheless, I at all times felt a disappointment that we’ve got to place these delicate and mild giants by way of such an unnatural course of within the first place. But sadly we’ve got no selection.

If we’re to successfully save endangered species, we won’t merely go away them alone. They must be managed, and sometimes meaning shifting them to the place they’re safer from poaching, or to new areas to attempt to unfold the inhabitants and diversify regionally inbred populations.

We need such animals to outlive the seize and translocation process, and to have as sturdy and wholesome immune and reproductive techniques as attainable on their launch.

Achieving that wants science. And if that science entails hanging rhinos upside-down, or different apparently bizarre and amusing analysis, let’s do it. The extinction of wildlife isn’t any laughing matter, even when it throws up the odd alternative to snigger as we be taught.The Conversation

Jason Gilchrist, Ecologist, Edinburgh Napier University.

This article is republished from The Conversation below a Creative Commons license. Read the unique article.


#Note-Author Name – Jason Gilchrist, The Conversation

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