Featured Research

from universities, journals, and other organizations

Cryptic worms encountered outside Sweden

Date:
June 14, 2010
Source:
University of Gothenburg
Summary:
Polychaete worms have populated the oceans for millions of years. Today they are the focus of study on cryptic species, which shows that apparently identical animals may be entirely different species. Researchers have now found new worm species outside of Sweden.

Top: The new-found, cryptical Polychaetes Paranaitis katoi. Middle: The invading Polychaetes Axiokebuita. Bottom: The new-found, cryptical Polychaetes Notophyllum crypticum.
Credit: Photographs by Arne Nygren and Fredrik Pleijel

Polychaete worms have populated the oceans for millions of years. Today they are the focus of study on cryptic species, which shows that apparently identical animals may be entirely different species. Researchers at the University of Gothenburg, Sweden, have now found new worm species in the Kattegat and Skagerrak.

Polychaetes belong to a group of segmented worms that display enormous diversity. It turns out that there may be significantly more of these worms than researchers had imagined. Many of the worm species have been identified morphologically, that is to say on the basis of their appearance. New molecular techniques show that many worms that have been assumed to belong to the same family are not as closely related as had been thought.

Cryptic species

Research scientist Jenny Eklöf, of the Department of Zoology, works in the rapidly advancing field of research which studies what are known as cryptic species, that is to say animals that are identical in appearance but genetically entirely different. The focus once more is on polychaetes, where Eklöf and her colleagues show that the Scandinavian species Paranaitis wahlbergi is in fact two separate species. The researchers have named the new species, which has been encountered off Sweden, Norway and Scotland, Paranaitis katoi.

Singles species in fact two

The researchers have also found in the group of worms Notophyllum foliosum that what has been regarded as a single species is in fact two. The two species live in the same geographical area but are found at different depths: below and above the 100-metre limit. The new species is found in deep water and has been given the name Notophyllum crypticum. Eklöf has also found a polychaete not previously encountered in European waters: Axiokebuita, a genus that usually lives in the Antarctic and also in eastern Canada.


Story Source:

The above story is based on materials provided by University of Gothenburg. Note: Materials may be edited for content and length.


Cite This Page:

University of Gothenburg. "Cryptic worms encountered outside Sweden." ScienceDaily. ScienceDaily, 14 June 2010. <www.sciencedaily.com/releases/2010/06/100614092530.htm>.
University of Gothenburg. (2010, June 14). Cryptic worms encountered outside Sweden. ScienceDaily. Retrieved October 2, 2014 from www.sciencedaily.com/releases/2010/06/100614092530.htm
University of Gothenburg. "Cryptic worms encountered outside Sweden." ScienceDaily. www.sciencedaily.com/releases/2010/06/100614092530.htm (accessed October 2, 2014).

Share This



More Plants & Animals News

Thursday, October 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Attacking Superbugs

Attacking Superbugs

Ivanhoe (Oct. 1, 2014) — Two weapons hospitals can use to attack superbugs. Scientists in Ireland created a new gel resistant to superbugs, and a robot that can disinfect a room in minutes. Video provided by Ivanhoe
Powered by NewsLook.com
Cultural Learning In Wild Chimps Observed For The First Time

Cultural Learning In Wild Chimps Observed For The First Time

Newsy (Oct. 1, 2014) — Cultural transmission — the passing of knowledge from one animal to another — has been caught on camera with chimps teaching other chimps. Video provided by Newsy
Powered by NewsLook.com
Earth Has Lost Half Its Vertebrate Wildlife Since 1970: WWF

Earth Has Lost Half Its Vertebrate Wildlife Since 1970: WWF

Newsy (Sep. 30, 2014) — A new study published by the World Wide Fund for Nature found that more than half of the world's wildlife population has declined since 1970. Video provided by Newsy
Powered by NewsLook.com
Annual Dog Surfing Competition Draws California Crowds

Annual Dog Surfing Competition Draws California Crowds

AFP (Sep. 30, 2014) — The best canine surfers gathered for Huntington Beach's annual dog surfing competition, "Surf City, Surf Dog." Duration: 01:15 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins