HOME >> BIOLOGY >> NEWS
Natural enemies help scientists untangle tropical forest food webs

will be essential to understand the diversity and structure of insect communities, especially in the species-rich tropics.

"It suggests that removal or addition of species, for example through selective logging or the release of a biological control agent, may have knock-on effects mediated by the network of natural enemies," said Professor Godfray.

The authors of the research from the NERC Centre for Population Biology at Imperial College London and the University of Oxford carried out the large-scale field experiment at the Natural History Museum's Las Cuevas Research Station in Belize, Central America.

Their experiment wasn't simple or easy: while scientists have carried out tests of apparent competition along coastal shorelines and in laboratory systems, manipulative experiments on insect communities in an environment as complex as a tropical forest are difficult and challenging and have rarely been attempted. Parasitism and predation can be especially intense, and levels of insect biodiversity are exceptionally high.

Previous work at the site by the same group led by one of the authors, Dr Owen Lewis, revealed the complexity of the food web they were studying: 93 species of leaf miner were attacked by 84 species of parasitoid wasp. Of the plants that were host to leaf miners, most were attacked by a single species but the researchers found that the vine plant Lepidaploa tortuosa was home to two leaf miners - a fly and a beetle (Latin names Pentispa fairmairei and Calycomyza sp. 8 respectively).

To test the apparent competition theory the researchers removed all of the L.tortuosa in their experimental fieldwork plots, alongside a 6-km stretch of track, in December 2001. In control plots the same biomass of plant material was removed from randomly chosen plant species that were not attacked by leaf miners.

Ten to 12 months, or five to six leaf miner generations, later, the scientists returned to measure the diffe
'"/>

Contact: Tom Miller
t.miller@imperial.ac.uk
44-207-594-6704
Imperial College London
18-Mar-2004


Page: 1 2 3

Related biology news :

1. Natural mineral locks up carbon dioxide
2. Naturalists of the Isthmus of Panama
3. Natural selection at work in genetic variation to taste
4. Natural, man-made mix promises biggest landscape plant growth
5. Natural killer cellers are made, not born
6. Natural selection in a nutshell
7. Natural fat compound may be basis for new class of drugs targeting obesity
8. Natural hormone could reverse heart damage
9. New biography details adventures of Fritz Muller, A Naturalist in Brazil
10. Natural selections fingerprint identified on fruit fly evolution
11. UC Riversides David Reznick receives 2003 E. O. Wilson Naturalist Award

Post Your Comments:
(Date:10/29/2014)... Philadelphia, PA, October 29, 2014 – Ghrelin is a ... and food intake. Alcohol is commonly viewed as a ... is also a highly caloric food. , This ... to the hypothesis that ghrelin has the potential to ... colleagues tested this in humans and found that, as ...
(Date:10/28/2014)... news release is available in German . ... close relatives, the chimpanzees, acquire sufficient food when times ... National Park in Côte d,Ivoire researchers of the Max ... a clear example of how great apes can acquire ... show that chimpanzees make their sleeping nests more en ...
(Date:10/28/2014)... Individual differences in moving activity in a novel ... to angling, according to an experimental study completed ... Finnish Game and Fisheries Research Institute. The study ... groups and authentic angling trials to analyse if ... trout reared in traditional and enriched hatchery rearing ...
Breaking Biology News(10 mins):Ghrelin stimulates an appetite for drinking alcohol 2The early chimp gets the fig 2The early chimp gets the fig 3Fish 'personality' linked to vulnerability to angling 2
(Date:10/30/2014)... 2014 Investor-Edge has initiated coverage ... ONVO), Medivation Inc. (NASDAQ: MDVN ), Pharmacyclics ... (NYSE MKT: SYN), and Ironwood Pharmaceuticals Inc. (NASDAQ: IRWD). ... at: http://investor-edge.com/register . On Wednesday, October ... 0.33%, the Dow Jones Industrial Average declined 0.18%, to ...
(Date:10/30/2014)... 2014 SoundConnect , an ... Office 365 end users the key to turning ... system by adding voice enablement and hybrid audio ... Online, a communication tool that includes presence, instant ... voice, O365 becomes a comprehensive unified communications solution. ...
(Date:10/30/2014)... 30, 2014 Avure Technologies celebrates a year ... newest member of its fleet of high volume High Pressure ... anniversary as we return to PackExpo this year, which is ... Las Vegas,” said Jeff Williams, CEO at Avure. “Sales of ... pleased to be meeting the challenges of market demand for ...
(Date:10/30/2014)... solution to one of the key challenges in the ... of Sussex physicists. , In a paper published today ... Garraway and colleagues show how to make a new ... Quantum technology devices, such as high-precision sensors and specialised ... of atoms. But the methods for trapping these tiny ...
Breaking Biology Technology:Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 2Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 3Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 4Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 5SoundConnect Launches Voice Enablement and Hybrid Audio Conferencing for Office 365 2SoundConnect Launches Voice Enablement and Hybrid Audio Conferencing for Office 365 3In High Demand: New High Pressure Processing (HPP) System with Maximum Throughput Drives Strong Sales 2In High Demand: New High Pressure Processing (HPP) System with Maximum Throughput Drives Strong Sales 3
Cached News: