Navigation Links
Unexpected crustacean diversity discovered in northern freshwater ecosystems
Date:3/2/2012

BUFFALO, N.Y. -- Freshwater ecosystems in northern regions are home to significantly more species of water fleas than traditionally thought, adding to evidence that regions with vanishing waters contain unique animal life.

The new information on water fleas -- which are actually tiny crustaceans -- comes from a multi-year, international study that was published Feb. 24 in the journal Zootaxa.

The researchers scoured the globe seeking the creatures and found them inhabiting northern lakes and ponds in locations from Alaska to Russia to Scandinavia.

After analyzing the anatomy and genetic makeup of many different specimens, the team conclusively determined that at least 10 species of the crustaceans existed -- five times as many as thought for much of the last century.

More than half the diversity was found in northern latitudes, where rapid freshwater habitat loss is occurring due to melting permafrost, increased evaporation and other changes tied to climate change.

"It is well known that parts of Alaska and Siberia have suffered a huge reduction in freshwater surface area, with many lakes and ponds disappearing permanently in the past few decades," said Derek J. Taylor, a University at Buffalo biologist and member of the research team. "What we're now finding is that these regions with vanishing waters, while not the most diverse in the world, do contain some unique aquatic animals."

"Some of these subarctic ponds that water fleas inhabit are held up by permafrost, so when this lining of ice melts or cracks, it's like pulling the plug out of a sink," Taylor said. "When you see the crop-circle-like skeletons of drained ponds on the tundra you can't help but wonder what animal life has been lost here."

Taylor's colleagues on the study included Eugeniya I. Bekker and Alexey A. Kotov of the A. N. Severtsov Institute of Ecology and Evolution in Moscow.

The research focused on water fleas of the genus Eurycercus, which can reach lengths of about 6 millimeters. The findings add to a body of evidence suggesting that the species diversity of water fleas is greater in northern regions than in the tropics.

This is a counterintuitive concept, as scientists have long supposed that the advance and readvance of ice sheets reduced much of the species diversity in colder climates, Taylor said. However, there is growing evidence that some northern areas remained ice-free and acted as hideouts during the harsh glacial advances.

The researchers not only convincingly documented new species diversity, but identified one likely new species and provided a detailed, formal description of another: Eurycercus beringi.

Like other water fleas, E. beringi is an important source of nutrients for fish and aquatic birds.

The new species -- from Alaska's remote Seward Peninsula -- has unusual anatomical features that force a rewrite of the taxonomy of Eurycercus above the species level. Moreover, the new anatomical details should aid future studies that use preserved body parts of Eurycercus found in lake sediments to reconstruct past ecological conditions.

The discovery of new crustacean species in unexpected places underscores the scope of the ongoing biodiversity crisis for freshwater ecosystems.


'/>"/>
Contact: Charlotte Hsu
chsu22@buffalo.edu
510-388-1831
University at Buffalo
Source:Eurekalert  

Related biology news :

1. A bugs (sex) life: Diving beetles offer unexpected clues about sexual selection
2. An unexpected player in a cancer defense system
3. Study shows unexpected effect of climate change on body size for many different species
4. Unexpected role of noise in spine formation
5. Orchids and fungi: An unexpected case of symbiosis
6. Unexpected function of dyslexia gene
7. Unexpected exoskeleton remnants found in Paleozoic fossils
8. New research reveals unexpected biological pathway in glaucoma
9. Unexpected findings of lead exposure may lead to treating blindness
10. Land evapotranspiration taking unexpected turn: huge parts of world are drying up
11. Waters unexpected role in blood pressure control
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Unexpected crustacean diversity discovered in northern freshwater ecosystems
(Date:4/5/2017)... NEW YORK , April 5, 2017 ... security, is announcing that the server component of the ... is known for providing the end-to-end security architecture that ... customers. HYPR has already secured over 15 ... system makers including manufacturers of connected home product suites ...
(Date:4/4/2017)... , April 4, 2017   EyeLock LLC , ... that the United States Patent and Trademark Office (USPTO) ... covers the linking of an iris image with a ... and represents the company,s 45 th issued patent. ... is very timely given the multi-modal biometric capabilities that ...
(Date:3/30/2017)... -- On April 6-7, 2017, Sequencing.com will host the world,s ... at Microsoft,s headquarters in Redmond, Washington ... health and wellness apps that provide a unique, personalized ... is the first hackathon for personal genomics and the ... the genomics, tech and health industries are sending teams ...
Breaking Biology News(10 mins):
(Date:4/19/2017)... ... April 19, 2017 , ... As part of ... accessible to novices as well as experienced users, attendees will gain a better ... screening tests. , Hemostasis testing quality is determined by preanalytical variables which ...
(Date:4/19/2017)... Calif. , April 19, 2017  As ... Drug Abuse and Heroin Summit ,  Proove┬« Biosciences, ... study analyzing genetics, environmental, and lifestyle factors to ... from the University of Southern California (USC), the ... , and Proove publish results showing that Proove ...
(Date:4/19/2017)... 19, 2017 Veracyte, Inc. ... it will report its first quarter 2017 financial ... 2017. Following the announcement, Veracyte,s management will host a live ... discuss the company,s financial results and business progress. ... may be accessed by visiting Veracyte,s website at  http://investor.veracyte.com . ...
(Date:4/18/2017)... , ... April 18, 2017 , ... ... that converts conductivity readings to concentration levels and vice-versa. , One of the ... analyzing solution strength in concentration control or monitoring. The principle of this analytical ...
Breaking Biology Technology: