The death-head's hawkmoth, the insect made famous by its appearance on the cover of cannibalistic 1991 horror movie The Silence of the Lambs, has given scientists a greater understanding of just how skilled the creatures can be.
Insects are the world’s smallest flying migrants and the joint Max Planck Institute of Animal Behaviour and University of Konstanz study radio-tagged and flew behind the hawkmoths for up to 80 kilometres as they navigated their way from Europe to north Africa — the longest distance over which any insect has been continuously monitored in the wild.
By closely following the hawkmoths during migration, the study unlocked a century-old mystery of what insects do over long-range journeys. And what they can do is accurately maintain a straight path for long distances in flight.
Scientists found the hawkmoths adopted strategies to buffer against prevailing winds, allowing them to hold their course throughout the night. When winds were favourable, they flew high and slow, allowing the air to carry them. But in harsh headwinds or cross winds, they flew low to the ground and increased speed to keep control of their path.
"This is important because it demonstrates that the insects are actively migrating and are maintaining control over their flight paths, even in unfavourable winds," study first author and lecturer at James Cook University in Australia, Dr Myles Menz, told The National.
"This allows them to select conditions in which to fly and to stay on course to reach their destination."
With trillions migrating every year, insects are some of the most common migrating animals on Earth. They include renowned species such as the monarch butterfly, locusts, mosquitoes and bees.
Migrating insects - in pictures
But even though insect migrants far outnumber better-known migrants, such as birds or mammals, their migration is the least understood form of long-range animal movement.
The problem, for the most part, has been methodological.
“Studying insects on the move is a formidable challenge,” said Dr Menz. “They’re usually too numerous to mark and find again, and too small to carry tracking devices.”
Much of what we know about insect migration has come from studies that sample insects at a single moment in time, such as through radar or direct observation, which has left vast gaps in our knowledge.
“Understanding what insects do during migration, and how they respond to weather, is a last frontier in migration science,” said Dr Menz.
How the migrating hawkmoths were tracked
The death’s-head hawkmoth is a large, nocturnal migrant that travels up to 4,000 kilometres between Europe and Africa every year. Like many insects, the species is multi-generational, which means that no individual knows the entire route.
At the MPI-AB in Konstanz, Germany, the team reared caterpillars until adulthood in the laboratory.
When moths emerged as adults, they were fixed with radio tags weighing 0.2 grams — less than 15 per cent of adults’ body weight.
“The moths would probably eat more weight than that in a night, so these tags are extremely light for the insects,” said Dr Menz.
The researchers released the tagged moths and waited for flight to begin, after which they chose one to follow at a time.
The team followed 14 moths each for up to 80 kilometres or four hours — long enough to be considered migratory flight — using antennae mounted on a Cessna plane to detect precise locations every five to 15 minutes. Insects were followed in the south-south-westerly direction from Konstanz into the Alps, which follows the route taken by hawkmoths towards the Mediterranean and north-west Africa.
The moths were tracked continuously until they stopped on route.
“When you’re in an airplane, it becomes extremely difficult to wait for the insects to begin migrating again because you would have to be in the air when this happens, which could be any time in the night,” said senior author Martin Wikelski, a movement ecologist from the MPI-AB and University of Konstanz, who piloted the plane during the study.
Dr Menz is hopeful his team's findings will "inspire more studies to answer many more big questions in this area”.
The next step is to establish how moths are able to maintain such straight lines.
“Based on past lab work, it’s possible that the insects are using internal compasses, both visual and magnetic, to chart their way around the world,” said Dr Menz.
Electric scooters: some rules to remember
- Riders must be 14-years-old or over
- Wear a protective helmet
- Park the electric scooter in designated parking lots (if any)
- Do not leave electric scooter in locations that obstruct traffic or pedestrians
- Solo riders only, no passengers allowed
- Do not drive outside designated lanes
Results:
First Test: New Zealand 30 British & Irish Lions 15
Second Test: New Zealand 21 British & Irish Lions 24
Third Test: New Zealand 15 British & Irish Lions 15
Company%20profile
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UAE currency: the story behind the money in your pockets
War 2
Director: Ayan Mukerji
Stars: Hrithik Roshan, NTR, Kiara Advani, Ashutosh Rana
Rating: 2/5
The candidates
Dr Ayham Ammora, scientist and business executive
Ali Azeem, business leader
Tony Booth, professor of education
Lord Browne, former BP chief executive
Dr Mohamed El-Erian, economist
Professor Wyn Evans, astrophysicist
Dr Mark Mann, scientist
Gina MIller, anti-Brexit campaigner
Lord Smith, former Cabinet minister
Sandi Toksvig, broadcaster
SPEC%20SHEET%3A%20APPLE%20IPAD%20PRO%20(12.9%22%2C%202022)
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Our legal consultant
Name: Dr Hassan Mohsen Elhais
Position: legal consultant with Al Rowaad Advocates and Legal Consultants.
UAE currency: the story behind the money in your pockets
The cost of Covid testing around the world
Egypt
Dh514 for citizens; Dh865 for tourists
Information can be found through VFS Global.
Jordan
Dh212
Centres include the Speciality Hospital, which now offers drive-through testing.
Cambodia
Dh478
Travel tests are managed by the Ministry of Health and National Institute of Public Health.
Zanzibar
AED 295
Zanzibar Public Health Emergency Operations Centre, located within the Lumumba Secondary School compound.
Abu Dhabi
Dh85
Abu Dhabi’s Seha has test centres throughout the UAE.
UK
From Dh400
Heathrow Airport now offers drive through and clinic-based testing, starting from Dh400 and up to Dh500 for the PCR test.
COMPANY%20PROFILE
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THE BIO: Martin Van Almsick
Hometown: Cologne, Germany
Family: Wife Hanan Ahmed and their three children, Marrah (23), Tibijan (19), Amon (13)
Favourite dessert: Umm Ali with dark camel milk chocolate flakes
Favourite hobby: Football
Breakfast routine: a tall glass of camel milk
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Traits of Chinese zodiac animals
Tiger:independent, successful, volatile
Rat:witty, creative, charming
Ox:diligent, perseverent, conservative
Rabbit:gracious, considerate, sensitive
Dragon:prosperous, brave, rash
Snake:calm, thoughtful, stubborn
Horse:faithful, energetic, carefree
Sheep:easy-going, peacemaker, curious
Monkey:family-orientated, clever, playful
Rooster:honest, confident, pompous
Dog:loyal, kind, perfectionist
Boar:loving, tolerant, indulgent
The White Lotus: Season three
Creator: Mike White
Starring: Walton Goggins, Jason Isaacs, Natasha Rothwell
Rating: 4.5/5
Cryopreservation: A timeline
- Keyhole surgery under general anaesthetic
- Ovarian tissue surgically removed
- Tissue processed in a high-tech facility
- Tissue re-implanted at a time of the patient’s choosing
- Full hormone production regained within 4-6 months
MOUNTAINHEAD REVIEW
Starring: Ramy Youssef, Steve Carell, Jason Schwartzman
Director: Jesse Armstrong
Rating: 3.5/5
Basquiat in Abu Dhabi
One of Basquiat’s paintings, the vibrant Cabra (1981–82), now hangs in Louvre Abu Dhabi temporarily, on loan from the Guggenheim Abu Dhabi.
The latter museum is not open physically, but has assembled a collection and puts together a series of events called Talking Art, such as this discussion, moderated by writer Chaedria LaBouvier.
It's something of a Basquiat season in Abu Dhabi at the moment. Last week, The Radiant Child, a documentary on Basquiat was shown at Manarat Al Saadiyat, and tonight (April 18) the Guggenheim Abu Dhabi is throwing the re-creation of a party tonight, of the legendary Canal Zone party thrown in 1979, which epitomised the collaborative scene of the time. It was at Canal Zone that Basquiat met prominent members of the art world and moved from unknown graffiti artist into someone in the spotlight.
“We’ve invited local resident arists, we’ll have spray cans at the ready,” says curator Maisa Al Qassemi of the Guggenheim Abu Dhabi.
Guggenheim Abu Dhabi's Canal Zone Remix is at Manarat Al Saadiyat, Thursday April 18, from 8pm. Free entry to all. Basquiat's Cabra is on view at Louvre Abu Dhabi until October
Leading all-time NBA scorers
Kareem Abdul-Jabbar 38,387
Karl Malone 36,928
Kobe Bryant 33,643
Michael Jordan 32,292
LeBron James 31,425
Wilt Chamberlain 31,419
Dubai works towards better air quality by 2021
Dubai is on a mission to record good air quality for 90 per cent of the year – up from 86 per cent annually today – by 2021.
The municipality plans to have seven mobile air-monitoring stations by 2020 to capture more accurate data in hourly and daily trends of pollution.
These will be on the Palm Jumeirah, Al Qusais, Muhaisnah, Rashidiyah, Al Wasl, Al Quoz and Dubai Investment Park.
“It will allow real-time responding for emergency cases,” said Khaldoon Al Daraji, first environment safety officer at the municipality.
“We’re in a good position except for the cases that are out of our hands, such as sandstorms.
“Sandstorms are our main concern because the UAE is just a receiver.
“The hotspots are Iran, Saudi Arabia and southern Iraq, but we’re working hard with the region to reduce the cycle of sandstorm generation.”
Mr Al Daraji said monitoring as it stood covered 47 per cent of Dubai.
There are 12 fixed stations in the emirate, but Dubai also receives information from monitors belonging to other entities.
“There are 25 stations in total,” Mr Al Daraji said.
“We added new technology and equipment used for the first time for the detection of heavy metals.
“A hundred parameters can be detected but we want to expand it to make sure that the data captured can allow a baseline study in some areas to ensure they are well positioned.”
From Europe to the Middle East, economic success brings wealth - and lifestyle diseases
A rise in obesity figures and the need for more public spending is a familiar trend in the developing world as western lifestyles are adopted.
One in five deaths around the world is now caused by bad diet, with obesity the fastest growing global risk. A high body mass index is also the top cause of metabolic diseases relating to death and disability in Kuwait, Qatar and Oman – and second on the list in Bahrain.
In Britain, heart disease, lung cancer and Alzheimer’s remain among the leading causes of death, and people there are spending more time suffering from health problems.
The UK is expected to spend $421.4 billion on healthcare by 2040, up from $239.3 billion in 2014.
And development assistance for health is talking about the financial aid given to governments to support social, environmental development of developing countries.
Results
4.30pm Jebel Jais – Maiden (PA) Dh60,000 (Turf) 1,000m; Winner: MM Al Balqaa, Bernardo Pinheiro (jockey), Qaiss Aboud (trainer)
5pm: Jabel Faya – Maiden (PA) Dh60,000 (T) 1,000m; Winner: AF Rasam, Tadhg O’Shea, Ernst Oertel
5.30pm: Al Wathba Stallions Cup – Handicap (PA) Dh70,000 (T) 2,200m; Winner: AF Mukhrej, Tadhg O’Shea, Ernst Oertel
6pm: The President’s Cup Prep – Conditions (PA) Dh100,000 (T) 2,200m; Winner: Mujeeb, Richard Mullen, Salem Al Ketbi
6.30pm: Abu Dhabi Equestrian Club – Prestige (PA) Dh125,000 (T) 1,600m; Winner: Jawal Al Reef, Antonio Fresu, Abubakar Daud
7pm: Al Ruwais – Group 3 (PA) Dh300,000 (T) 1,200m; Winner: Ashton Tourettes, Pat Dobbs, Ibrahim Aseel
7.30pm: Jebel Hafeet – Maiden (TB) Dh80,000 (T) 1,400m; Winner: Nibraas, Richard Mullen, Nicholas Bachalard
The Bio
Favourite place in UAE: Al Rams pearling village
What one book should everyone read: Any book written before electricity was invented. When a writer willingly worked under candlelight, you know he/she had a real passion for their craft
Your favourite type of pearl: All of them. No pearl looks the same and each carries its own unique characteristics, like humans
Best time to swim in the sea: When there is enough light to see beneath the surface
RACE CARD
5pm: Handicap (PA) Dh70,000 1,400m
5.30pm: Handicap (TB) Dh70,000 1,000m
6pm: Maiden (PA) Dh70,000 2,000m
6.30pm: Handicap (PA) Dh70,000 2,000m
7pm: Maiden (PA) Dh70,000 1,600m
7.30pm: Al Ain Mile Group 3 (PA) Dh350,000 1,600m
8pm: Handicap (PA) Dh70,000 1,600m
Amith's selections:
5pm: AF Sail
5.30pm: Dahawi
6pm: Taajer
6.30pm: Pharitz Oubai
7pm: Winked
7.30pm: Shahm
8pm: Raniah
Lexus LX700h specs
Engine: 3.4-litre twin-turbo V6 plus supplementary electric motor
Power: 464hp at 5,200rpm
Torque: 790Nm from 2,000-3,600rpm
Transmission: 10-speed auto
Fuel consumption: 11.7L/100km
On sale: Now
Price: From Dh590,000
GAC GS8 Specs
Engine: 2.0-litre 4cyl turbo
Power: 248hp at 5,200rpm
Torque: 400Nm at 1,750-4,000rpm
Transmission: 8-speed auto
Fuel consumption: 9.1L/100km
On sale: Now
Price: From Dh149,900
Afro%20salons
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COMPANY PROFILE
Name: Lamsa
Founder: Badr Ward
Launched: 2014
Employees: 60
Based: Abu Dhabi
Sector: EdTech
Funding to date: $15 million
Why the Tourist Club?
Originally, The Club (which many people chose to call the “British Club”) was the only place where one could use the beach with changing rooms and a shower, and get refreshments.
In the early 1970s, the Government of Abu Dhabi wanted to give more people a place to get together on the beach, with some facilities for children. The place chosen was where the annual boat race was held, which Sheikh Zayed always attended and which brought crowds of locals and expatriates to the stretch of beach to the left of Le Méridien and the Marina.
It started with a round two-storey building, erected in about two weeks by Orient Contracting for Sheikh Zayed to use at one these races. Soon many facilities were planned and built, and members were invited to join.
Why it was called “Nadi Al Siyahi” is beyond me. But it is likely that one wanted to convey the idea that this was open to all comers. Because there was no danger of encountering alcohol on the premises, unlike at The Club, it was a place in particular for the many Arab expatriate civil servants to join. Initially the fees were very low and membership was offered free to many people, too.
Eventually there was a skating rink, bowling and many other amusements.
Frauke Heard-Bey is a historian and has lived in Abu Dhabi since 1968.
Hotel Silence
Auður Ava Ólafsdóttir
Pushkin Press
