Navigation Links
Scientists find how amber becomes death trap for watery creatures

GAINESVILLE, Fla. Shiny amber jewelry and a mucky Florida swamp have given scientists a window into an ancient ecosystem that could be anywhere from 15 million to 130 million years old.

Scientists at the University of Florida and the Museum of Natural History in Berlin made the landmark discovery that prehistoric aquatic critters such as beetles and small crustaceans unwittingly swim into resin flowing down into the water from pine-like trees. Their findings are published this week in the Proceedings of the National Academy of Sciences.

The resin with its entombed inhabitants settled to the bottom of the swamp was covered by sediment and after millions of years became amber, a bejeweled version of the tar pits that trapped saber-toothed tigers in what is now California, said David Dilcher, a UF paleo-botanist and one of the studys researchers.

People never understood how freshwater algae and freshwater protozoans could be incorporated in amber because amber is considered to have been formed on land, said Dilcher, who works at the Florida Museum of Natural History on the UF campus. We showed that it just as well could be formed from resin exuded in watery swamp environments. Later the swamps may dry up and the resin hardens.

Dilcher and Alexander Schmidt, a researcher at the Museum of Natural History in Berlin, replicated the prehistoric demise of the water bugs by taking a handsaw to a swamp on Dilchers property near Gainesville in north Central Florida. After they cut bark from some pine trees, the resin flowed into the water and they collected the goo and took it back to Dilchers lab on campus.

Stuck in the sticky sap were representatives of almost all the small inhabitants of the swamp ecosystem, Dilcher said. We found beautiful examples of water beetles, mites, small crustaceans called ostracods, nematodes, and even fungi and bacteria living in the water, he said.

The discovery not only solved the mystery of how swimming bugs could have been entombed in sticky sap from high up in a tree but could lead to new information about prehistoric, maybe even Jurassic, swamps, Dilcher said. Studying organisms that were trapped for millions of years in amber may help scientists to recreate prehistoric water ecosystems and learn how these life forms changed over time, he said.

While no one is claiming that the entombed bugs will be brought back to life through genetic splicing, the discovery may give clues about the evolution of microorganisms, he said.

We all think of horses, elephants and people as having changed a great deal through time, he said. Have amoeba and other microscopic organisms changed much? Or have they found a niche or what we call a stasis in which their evolutionary lineage persists for many hundreds of millions of years? We dont have the answers to those questions until we look at the fossil record.

Insects such as bees, spiders, tics and fleas that become embedded in amber have received a great deal of attention because they are so abundant, Dilcher said. Unfortunately, people have overlooked the little things while searching for the big bugs and the flowers in amber, he said.

Microorganisms are important because they form relationships with higher organisms, making them the foundation of the pyramid of life, Dilcher said. To understand more about their evolution adds an important step in our understanding of life itself, he said.

Gene Kritsky, editor of the journal American Entomologist and a biology professor at the College of Mount St. Joseph in Cincinnati, said Dilcher has performed a great service in answering a question that has long puzzled scientists, the seemingly contradictory aspect of finding aquatic insects in tree resin.

Its been one of the strange things mentioned by biologists and entomologists for decades how do you account for aquatic insects and organisms in what seemed to be an ancient terrestrial environment, Kritsky said. Dilcher examined this contradiction by creating the conditions that would cause sap deposits to flow into water to see what would happen. The results demonstrated that aquatic insects can be trapped in resin without leaving their aquatic world. Thus, the presence of aquatic organisms in amber is the result of a simple natural process.


Contact: David Dilcher
University of Florida

Related biology news :

1. Wisconsin scientists grow critical nerve cells
2. Scientists ID molecular switch in liver that triggers harmful effects of saturated and trans fats
3. UCSB scientists probe sea floor venting to gain understanding of early life on Earth
4. UAB scientists discover the origin of a mysterious physical force
5. Fox Chase Cancer Center scientists identify immune-system mutation
6. Scientists Replicate Hepatitis C Virus in Laboratory
7. Scientists detect probable genetic cause of some Parkinsons disease cases
8. Scientists find missing enzyme for tuberculosis iron scavenging pathway
9. Scientists seek answers on what activates deadly anthrax spores
10. Yale Scientists Find MicroRNA Regulates Ras Cancer Gene
11. Scientists collaborate to assess health of global environment
Post Your Comments:
(Date:11/18/2015)... , November 18, 2015 ... has published a new market report titled  Gesture Recognition ... and Forecast, 2015 - 2021. According to the report, the global ... and is anticipated to reach US$29.1 bn by 2021, ... North America dominated the ...
(Date:11/16/2015)... Nov 16, 2015  Synaptics Inc. (NASDAQ: ... solutions, today announced expansion of its TDDI product ... touch controller and display driver integration (TDDI) solutions ... These new TDDI products add to the previously-announced ... TD4302 (WQHD resolution), and TD4322 (FHD resolution) solutions. ...
(Date:11/10/2015)... LONDON , Nov. 10, 2015 /PRNewswire/ ... segmented on the basis of product, type, ... segments included in this report are consumables, ... this report are safety biomarkers, efficacy biomarkers, ... in this report are diagnostics development, drug ...
Breaking Biology News(10 mins):
(Date:11/26/2015)... , England , November 26, 2015 /PRNewswire/ ... Medical, an innovative medical device company specializing in imaging technologies, ... from the European Commission as part of the Horizon 2020 ... company to carry out a large-scale clinical trial in breast ...      (Logo: , --> ...
(Date:11/25/2015)... , Nov. 25, 2015  PharmAthene, Inc. (NYSE ... has adopted a stockholder rights plan (Rights Plan) in ... operating loss carryforwards (NOLs) under Section 382 of the ... --> PharmAthene,s use of its NOLs could ... change" as defined in Section 382 of the Code. ...
(Date:11/25/2015)... -- Studies reveal the differences in species ... the way for more effective treatment for one of the ... --> --> Gum disease ... cats, yet relatively little was understood about the bacteria associated ... conducted by researchers from the WALTHAM Centre for Pet Nutrition ...
(Date:11/25/2015)... DIEGO , Nov. 25, 2015  Neurocrine Biosciences, ... Kevin Gorman , President and CEO of Neurocrine Biosciences, ... Healthcare Conference in New York . ... to visit the website approximately 5 minutes prior to ... A replay of the presentation will be available on ...
Breaking Biology Technology: