Featured Research

from universities, journals, and other organizations

Scorpion Biodiversity Seen In 'Evolution Canyon'

Date:
April 18, 2009
Source:
Public Library of Science
Summary:
Scorpions possess resistance to high temperatures and the ability to conserve water for long periods of time, and as a result thrive in hot and arid parts of the world. But is this global distribution also seen at a more local level? Biologists now show that this is indeed the case, even when European-like and African-like habitats were separated by no more than 100 meters.

Scorpio maurus, a species of North African and Middle Eastern scorpion, also known as the Large-clawed Scorpion or Israeli gold scorpion.
Credit: Guy Haimovitch / Courtesy of Wikimedia Commons

Scorpions possess resistance to high temperatures and the ability to conserve water for long periods of time, and as a result thrive in hot and arid parts of the world. But is this global distribution also seen at a more local level?

Doctoral student Shmuel Raz and colleagues at the University of Haifa, Israel now show that this is indeed the case, even when European-like and African-like habitats were separated by no more than 100 metres.

Shmuel Raz and colleagues studied the communities of scorpions in a valley near Mount Carmel in Israel which has been dubbed "Evolution Canyon." Evolution Canyon" has steep slopes and runs approximately east-west, which means that the south-facing slope receive up to eight times as much solar radiation as the north-facing slope . Thus, despite identical regional geology and rainfall, one slope, dubbed the "African" slope of the canyon is arid savannah-like while the other boasts a lush, maquis-like forest environment separated by a narrow canyon floor that could easily be crossed by most animals and certainly would provide no barrier to a scorpion.

The researchers collected nearly 200 specimens of six different species of scorpions in "Evolution Canyon." While four of the species were found on both slopes of the canyon, two were only seen on the more arid, "African"-like slope. Similarly the "European" slope of the canyon yielded nearly a third fewer scorpion specimens than the "African" slope . Despite the ease of movement between the two canyon faces, the particular adaptations of the scorpions to arid conditions have led to their greater abundance on the south-facing, "African" slope.

Differences in the diversity of species between the north and south facing slopes of "Evolution Canyon" have been observed in other groups of bacteria, fungi, plants and animals and in combination with these, new studies on scorpions show that the environmental pressures brought about by factors such as the amount of sunshine, temperature and drought whether individually or in combination, can act very locally to produce global changes in biodiversity.


Story Source:

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


Journal Reference:

  1. Raz et al. Scorpion Biodiversity and Interslope Divergence at “Evolution Canyon”, Lower Nahal Oren Microsite, Mt. Carmel, Israel. PLoS ONE, 2009; 4 (4): e5214 DOI: 10.1371/journal.pone.0005214

Cite This Page:

Public Library of Science. "Scorpion Biodiversity Seen In 'Evolution Canyon'." ScienceDaily. ScienceDaily, 18 April 2009. <www.sciencedaily.com/releases/2009/04/090409185415.htm>.
Public Library of Science. (2009, April 18). Scorpion Biodiversity Seen In 'Evolution Canyon'. ScienceDaily. Retrieved April 21, 2014 from www.sciencedaily.com/releases/2009/04/090409185415.htm
Public Library of Science. "Scorpion Biodiversity Seen In 'Evolution Canyon'." ScienceDaily. www.sciencedaily.com/releases/2009/04/090409185415.htm (accessed April 21, 2014).

Share This



More Plants & Animals News

Monday, April 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Mich. Boy Unearths 10,000-Year-Old Mastodon Tooth

Mich. Boy Unearths 10,000-Year-Old Mastodon Tooth

Newsy (Apr. 20, 2014) A 9-year-old Michigan boy was exploring a creek when he came across a 10,000-year-old tooth from a prehistoric mastodon. Video provided by Newsy
Powered by NewsLook.com
Vermont Goat Meat Gives Refugees Taste of Home

Vermont Goat Meat Gives Refugees Taste of Home

AP (Apr. 18, 2014) Dairy farmers and ethnic groups in Vermont are both benefiting from a unique collaborative effort that's feeding a growing need for fresh and affordable goat meat. (April 18) Video provided by AP
Powered by NewsLook.com
Man Claims He Found Loch Ness Monster With... Apple Maps?

Man Claims He Found Loch Ness Monster With... Apple Maps?

Newsy (Apr. 18, 2014) Andy Dixon showed the Daily Mail a screenshot of what he believes to be the mythical beast swimming just below the lake's surface. Video provided by Newsy
Powered by NewsLook.com
First Ever 'Female Penis' Discovered In Animal Kingdom

First Ever 'Female Penis' Discovered In Animal Kingdom

Newsy (Apr. 18, 2014) Not only are these newly discovered bugs' sex organs reversed, but they also mate for up to 70 hours. Video provided by Newsy
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:
from the past week

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