Radio frequency ID tags on honeybees reveal hive dynamics
Pictured at left is one of the bees to which scientists attached radio-frequency identification tags that allowed them to track the bees’ movements for several weeks. The scientists found that some foraging bees are much busier than others, and if those busy bees disappear, others will take their place. Tagging the bees revealed that about 20 percent of the foraging bees in a hive brought home more than half of the nectar and pollen gathered to feed the hive. "We found that some bees are working very, very hard – as we would have expected,” said University of Illinois Institute for Genomic Biology Director Gene E. Robinson, who led the research. “But then we found some other bees that were not working as hard as the others.”
Image credit: Tom Newman, Robinson Bee Laboratory
RedOrbit Images Of The Day - Earth
The Great Barrier Reef contains over 400 types of coral, and supports an extremely diverse marine ecosystem. About 1,500 species of fish and 4,000 types of mollusk live in the Reef, and it provides habitat for species such as the dugong (‘sea cow’) and the large green turtle, which are threatened with extinction.
Sitting off of and running roughly parallel to Queensland’s coast, the Great Barrier Reef covers more than 348,000 square kilometers (134,000 sq mi) and stretches extends for more than 2,000 kilometers (1243 mi). While generally referred to as a single unit (“the Reef”), it is actually made up of approximately 2,500 individual reefs and over 900 islands, which include tiny cays (islands which are part of a reef), small vegetated islets as well as large islands with rugged terrain rising over 1,100 m (684 mi) above sea level.
The Moderate Resolution Imaging Spectroradiometer (MODIS) aboard NASA’s Aqua satellite captured this spectacular true-color image of the Great Barrier Reef on July 30, 2014. The dry Australian winter landscape appears tan, highlighted with green vegetation along the coast. Just off the coastline, bits of electric blues and greens mark the coral reefs. A bank of clouds sits to the northeast.
Credit: Jeff Schmaltz, MODIS Land Rapid Response Team, NASA GSFC
USGS Earthquake ShakeMaps
3 - 45.7 km (28.4 mi) SSE of Adel, OR
Date: Thu, 24 Jul 2014 02:40:49 UTC
- NASA's Earth Observatory
- EPOD / Earth Science Picture of the Day
- TPOD / Thunderbolts Picture of the Day