'Pantala flavescens' found in several countries, including India, have an estimated 7,081 kilometers or more range.
A small dragonfly found in several countries, including
India may be more prolific long distance traveler of the animal world - fly
thousands of miles over the ocean as it migrates across continents, scientists
say.
Scientists at Rutgers University in Newark (RU-N) found that
populations of this dragonfly, called Pantala flavescens, as far away as Texas,
eastern Canada, Japan, Korea, India and South America, have profiles genetic
similarly there is only one likely explanation.
These insects are extremely long distances that its small
size, breeding with each other, and the creation of a common gene pool in the
world that would be impossible if not intermingle travel, researchers said.
"This is the first time anyone has looked at the genes
to see how far these insects have traveled," said Jessica Ware, assistant
professor of biology at the RU-N.
"If North America Pantala only raised with North
American and Japanese Pantala Pantala only grew up with the Japanese Pantala,
we would expect to see that in the genetic results that differ from each
other," Ware said. "Because we do not see that, the mixture of genes
is suggested across large geographic areas," he said.
They have adaptations
"These dragonflies have adaptations such as increased
surfaces on the wings that allow them to use the wind to carry them," Ware
said.
Dragonflies, in fact, already been observed across the
Indian Ocean from Asia to Africa.
"They are following the weather. Ranging from India,
where it is dried to Africa season, where is the wet season, and apparently
they do once a year," said Daniel Troast, who analyzed the DNA samples in
the laboratory Ware.
They need moisture to multiply
"Moisture is a must for Pantala to play, and that's why
these insects would be driven to even attempt such a dangerous trip," Ware
said.
The species depends on it. While many die on the way, as
long as it is enough, the species survives.
flight patterns seem to vary. The most robust dragonflies
could make the trip nonstop, catching the strong air currents or even hurricane
winds and slides to the end.
Others may be planes.
Freshwater as a breeding ground
Sweet Pantala need to mate and lay their eggs water - and if
they detect a freshwater pool, even on an island in the middle of an ocean -
are likely to use these pools to mate, the researchers said.
After the eggs hatch and the babies are mature enough to fly
- it has only a few weeks - the new dragonflies join right now
multigenerational trip intercontinental and swarm, where their parents left.
New record holders
Monarch butterflies that migrate across North America were
thought to insects that migrate longer, traveling around 4023 km in each
direction, but Pantala break any record of migration would, with its planned
7,081 km range or Moreover, the researchers said.
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