More sex key to protecting bee populations

September 28, 2015 by Tony Malkovic, Sciencenetwork Wa, Science Network WA
Prof Baer said WA has a wide population of bees and, in effect, the South West of WA is a ‘Noah’s Ark’ for these insects. Credit: manszar

They're small, they're responsible for helping produce a third of the world's food production, and their foraging habits and sex lives are crucial areas of scientific research.

According to Professor Boris Baer, the director of UWA's Centre for Integrative Bee Research (CIBER), are the unsung heroes of the planet: big travellers and hard workers.

The foragers from a colony of bees can travel a total of 450,000 kilometres a day—equivalent to travelling 11 times around the world—and pollinate some 6,000,000 flowers.

But there is a global decline in bee numbers and although parasites and pathogens are partly to blame, the cause of the decline is still a bit of a mystery.

As part of a UWA Research Week event, Prof Baer outlined some of the interdisciplinary research initiatives underway at CIBER to counter bee losses.

He says the million dollar question is: how do we save bees?

One answer is genetic diversity. Prof Baer can sum up another approach in four words: "more sex is better".

To better understand bee reproduction, Prof Baer and CIBER utilise an artificial insemination technique for bees.

He said a better understanding of bee reproduction can result in stronger populations and less disease, and help beekeepers' queen breeding programs.

Part of CIBER's research involves using mass spectrometers to better understand the molecules present in bee seminal fluid and how queen bees reproduce.

Professor Boris Baer, director of UWA’s Centre for Integrative Bee Research (CIBER). Credit: UWA

It turns out, honey bees have an interesting mating habit.

Once a mates with several males and lays its first egg, she never re-mates.

In effect, she will retain a lifetime's supply of sperm in her body, possibly enough to lay 1.5 million eggs over its lifetime of up to three years.

Prof Baer said WA is an ideal place to study bees: it is isolated, there is tight biosecurity, and fewer of the chemicals and pests that have ravaged elsewhere in the world.

He said WA has a wide population of bees and, in effect, the South West of WA is a 'Noah's Ark' for these insects.

"You might have one of the last remaining healthy bee colonies in the globe," he said.

And because WA's winters are not as severe, honey production is greater.

He says in Switzerland, a hive might deliver 16-20kg of honey a year; in Germany, it might be 20-30; while in WA it can be much, much more.

"Our bees will give 200-300kg of honey from a hive," he says.

Explore further: Why honey bee sex can be dangerous

Related Stories

Why honey bee sex can be dangerous

August 5, 2015

A discovery by scientists at UWA that a widespread fungus that causes dysentery in honey bees can be sexually transmitted may impact bee breeding programs world-wide.

Recommended for you

Asteroids, hydrogen make great recipe for life on Mars

March 26, 2019

A new study reveals asteroid impacts on ancient Mars could have produced key ingredients for life if the Martian atmosphere was rich in hydrogen. An early hydrogen-rich atmosphere on Mars could also explain how the planet ...

Cool Earth theory sheds more light on diamonds

March 26, 2019

A QUT geologist has published a new theory on the thermal evolution of Earth billions of years ago that explains why diamonds have formed as precious gemstones rather than just lumps of common graphite.

New cellulose-based material represents three sensors in one

March 26, 2019

Cellulose soaked in a carefully designed polymer mixture acts as a sensor to measure pressure, temperature and humidity at the same time. The measurements are completely independent of each other. The ability to measure pressure, ...

Physicists discover new class of pentaquarks

March 26, 2019

Tomasz Skwarnicki, professor of physics in the College of Arts and Sciences at Syracuse University, has uncovered new information about a class of particles called pentaquarks. His findings could lead to a new understanding ...

Study finds people who feed birds impact conservation

March 26, 2019

People in many parts of the world feed birds in their backyards, often due to a desire to help wildlife or to connect with nature. In the United States alone, over 57 million households in the feed backyard birds, spending ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.