×

UPSC Courses

DNA banner

DAILY NEWS ANALYSIS

  • 27 June, 2021

  • 5 Min Read

Do insects migrate? Which insect has the longest migration route?

Do insects migrate? Which insect has the longest migration route?

  • Many dragonflies, beetles, butterflies, locusts and moths are known to migrate during the breeding season and the distance travelled varies with species. Most insects travel in large groups and scientists have been studying these movements for several years.
  • A recent study (PNAS) noted that the painted lady butterfly (Vanessa cardui) can make 12,000 to 14,000 kilometre round trips. This is the longest annual insect migration circuit so far known.
  • Found in sub-Saharan Africa, the butterfly is able to travel to Europe, crossing the Sahara Desert when weather conditions are favourable. The caterpillars thrive in wetter winter conditions of sub-Saharan Africa and the adults migrate to North Africa during wet spring. They then cross the Mediterranean Sea to reach Europe.
  • Simulations in the laboratory showed that favourable tailwinds between Africa and Western Europe help these insects in transcontinental travel. They fly about one to three kilometres above sea level with a maximum speed of around 6 metres per second. The researchers studied a similar butterfly species and calculated that the painted lady may have enough body fat to sustain 40 hours of non-stop flying.

Source: The Hindu


Sun, Solar Missions & Solar Phenomenon

Sun, Solar Missions & Solar Phenomenon Context: This topic is important for UPSE Prelims and Mains GS Paper3. Aurora An aurora also known as the polar lights or aurora polaris, is a natural light display in Earth's sky, predominantly seen in high-latitude regions (around the Arctic&nb

Changes in the Prompt Corrective Action norms for bank

Changes in the Prompt Corrective Action norms for banks Context: This topic is important for UPSE GS Paper 3. What will commercial banks under scrutiny need to do to get out of the restrictions imposed by the central bank? The story so far: The RBI issued a notification on November 2 revising norms for commercial banks to be placed under t

Study on Countries’ commitment on Climate Change

Study on Countries’ commitment on Climate Change Context: This topic is important for UPSE GS Paper 3. The findings, while optimistic, come amidst the deliberations underway at Glasgow. How effective are climate change pledges made by countries in containing global warming?  A study published Friday in the journal Science fin

National Investment and Manufacturing Zones (NIMZ)

About National Investment and Manufacturing Zones (NIMZ) The Government of India (GoI) has announced a National Manufacturing Policy, 2011, with the objective of enhancing the share of manufacturing in GDP to 25% within a decade and creating 100 million jobs. NIMZs are one of the important instruments to achieve it. As per the Policy, &ldqu

International Financial Services Center (IFSC)

What is an International Financial Services Center (IFSC)? An IFSC caters to customers outside the jurisdiction of the domestic economy.  Such centres deal with flows of finance, financial products and services across borders.  London, New York and Singapore can be counted as global financial centres.  The&n

Students Achievement

Search By Date

Newsletter Subscription
SMS Alerts