HOME >> BIOLOGY >> NEWS
Why nectar-feeding bats need a 'power drink' to fly

Nectar-feeding bats burn sugar faster than any other mammal on Earth and three times faster than even top-class athletes ecologists have discovered. The findings, published online in the British Ecological Society's journal Functional Ecology, illustrate that because they live life on an energetic knife edge, these bats are very vulnerable to any changes in their environment that interrupt their fuel supply for even a short period.

Working with a captive breeding colony in Germany, Dr Christian Voigt of the Leibniz Institute for Zoo and Wildlife Research in Berlin and Professor John Speakman of the University of Aberdeen fed long-tongued bats (Glossophaga soricina) sugar labelled with non-radioactive carbon-13 and then measured the amount of carbon-13 in the bats exhaled breath.

We found that nectar-feeding bats made use of the sugar they were drinking for their metabolism within minutes after drinking it, and after less than half an hour they were fuelling 100% their metabolism from this source. For comparison, the highest rates reported in humans are for athletes who can fuel up to 30% of their metabolism directly from power drinks, they say.

The reason these bats live on such an energetic knife edge is down to the food source they live on and the way they get around. They feed on floral nectars that contain simple sugars such as sucrose, glucose and fructose, but which are produced in only very small amounts by flowering plants. These sugars are rapidly absorbed and digested, and by metabolising them directly rather than converting them to fat or glycogen and then using them up later the bats get the maximum energy they can from the sugars. This is important because they hover like humming birds, and this kind of flight uses up a great deal of energy.

According to Voigt and Speakman: All animals need energy to power their metabolism. Ultimately this energy comes from food, but usually only a small fraction of the ene
'"/>

Contact: Melanie Thomson
melanie.thomson@oxon.blackwellpublishing.com
44-018-654-76270
Blackwell Publishing Ltd.
5-Aug-2007


Page: 1 2

Related biology news :

1. Spouse may drive you to drink but also can protect you from alcohol
2. Red wine lovers, take heart: More evidence points to the drinks cardiac heath benefits

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/25/2019)... ... ... NDA Partners Chairman Carl Peck, MD , announced today that Tara Maddala, ... drug and genomic diagnostic products for therapeutic indications in oncology, has joined the firm ... as Vice President of Biometrics at GRAIL, Inc., where she built and led a ...
(Date:4/18/2019)... ... April 18, 2019 , ... Medpricer, the ... launch of mSource® AI Contract Text Analysis. This contract mining tool uses machine ... contracts, truly optimizing purchased services spend at record speed. It can analyze more ...
(Date:4/16/2019)... ... 16, 2019 , ... The Healthcare Technology Report is pleased ... extensive process was run to evaluate the hundreds of CEOs that lead exemplary ... other related areas. We gathered data on each nominee’s professional background and assessed ...
Breaking Biology News(10 mins):
(Date:5/8/2019)... POWAY, Calif. (PRWEB) , ... May 07, 2019 , ... Standing at 16.2 hands, Atlas ... busy too, participating in a drill team and barrel racing, among other activities. When ... suspensory ligament. He went from being a busy horse to only being able to ...
(Date:5/4/2019)... ... May 03, 2019 , ... Diopsys Inc, the ... ffERG/Photopic Negative Response vision test, a new full field electroretinography (ffERG) protocol ... that 6.3 million Americans will have glaucoma, with black Americans having the highest ...
(Date:5/2/2019)... ... 2019 , ... Stay on top of current hot topics through free webinars ... all webinars is free, so be sure to register today to save your place! ... to see our upcoming webinars: , CLINICAL TRIALS , May 7 – Oncology ...
(Date:4/25/2019)... ... April 23, 2019 , ... Frank is an albino, deaf Great Dane. His owners ... him due to his health issues. Despite his hearing impairment, he was always an active ... two would play all day, every day. As the two grew, playtime became rougher and ...
Breaking Biology Technology:
Cached News: