Scaring grasshoppers could hit the whole of ecosystem
Washington: Grasshoppers, stressed by the fear of an attack by spiders, could harm our ecosystem dearly by consuming a greater quantity of carbohydrate-rich plants, similar to what humans under stress do - eat more sweets, according to researchers.
This type of reaction will, in turn, cause chemical changes in the grasshopper and in its excretions, affecting the ecosystem it inhabits, according to researchers from the Hebrew University of Jerusalem and at Yale University, US.
When the scared grasshopper dies, its carcass, now containing less nitrogen as a result of its diet change, will have an effect on the microbes in the ground, which are responsible for breaking down animals and plants, the journal Science reports.
With less nitrogen available, the microbes will be decomposing the hard-to-break-down plant materials in the soil at a slower rate. Thus, the fear of predation may slow down degradation of complex organic materials to the simpler compounds required for plant growth.
Research on this biological-ecological phenomenon was carried out by Dror Halwena of the Department of Ecology, Evolution and Behaviour at the Hebrew University of Jerusalem, along with researchers at Yale.
The scientists exposed grasshoppers to spiders in order to arouse the stress reaction. They also used a group of non-stressed grasshoppers. The scared grasshoppers had a higher carbon-to-nitrogen ratio in their bodies than non-scared grasshoppers, according to Hebrew and Yale statement.
"We are dealing here with an absolutely new kind of mechanism whereby every small chemical change in a creature can regulate the natural cycle, thus in effect affecting the ecology in total, such as the amount of carbon dioxide released into the atmosphere (through decomposition) and field crop productivity. This has tremendous consequences for our ecological understanding of the living world," said Halwena.
More from India
More from World
More from Sports
More from Entertaiment
- Jamaat-e-Islami chief announces Rs 100 cr reward for PM Modi's arrest
- DNA: Captain Saurabh Kalia's torture at the hands of Pakistani Army
- DNA: Govt tests Maggi noodle samples from all states
- Zee Media exclusive interview with victim of Uber molestation
- Jamaat-e-Islami chief announces Rs 1 billion reward for PM Modi's arrest
- Assam Board (seba.net.in & resultsassam.nic.in): SEBA HSLC / AHM class 10th Results 2015 to be announced today
- Was asked to call Sunanda Pushkar’s death `natural`: AIIMS doctor
- From being the ‘Dabangg’ girl to ‘Akira’ - Sonakshi Sinha’s journey so far
- Maggi row: Delhi registers case against Nestle, Kerala withdraws stock from govt stores
- China ship carrying 458 on board sinks in Yangtze River: Five dead, hundreds missing