Featured Research

from universities, journals, and other organizations

Meek male and fighting female scorpions

Date:
May 28, 2014
Source:
PLOS
Summary:
Threatened female bark scorpions sting quicker than males, likely to compensate for reduced ability to flee the threat. Differences between male and female scorpion bodies and behavior may result from sexual or environmental pressures. For example, female bark scorpions are pregnant 80% of the year, and as a result, may deal with threats differently than males.

This image depicts a male striped bark scorpion (Centruroides vittatus).
Credit: Matthew Rowe, co-author of this PLOS ONE article; CCAL

Threatened female bark scorpions sting quicker than males, likely to compensate for reduced ability to flee the threat, according to results published May 28, 2014, in the open access journal PLOS ONE by Bradley Carlson from Pennsylvania State University and colleagues.

Differences between male and female scorpion bodies and behavior may result from sexual or environmental pressures. For example, female bark scorpions are pregnant 80% of the year, and as a result, may deal with threats differently than males. To investigate this further, scientists tested the effects of sex and body shape on stinging and sprinting ability, and then evaluated the differences in aggression between the sexes in response to simulated threats.

Scientists found that female scorpions exhibit poor sprinting ability-likely due to their higher body mass while pregnant-and appear to compensate by rapidly stinging in both the sting speed and aggression trials. In fact, every female stung at least once during the sting speed trials, while only 64% of males did. On the other hand, male bark scorpions had longer legs and superior sprinting ability, which they probably use to evade predators and find a mate.

Bradley Carlson added, "Heavy scorpions are apparently more aggressive because they have a hard time escaping danger. The weight difference between males and the usually pregnant females seems to explain why they choose different options in a fight-or-flight situation."


Story Source:

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


Journal Reference:

  1. Bradley E. Carlson, Shannen McGinley, Matthew P. Rowe. Meek Males and Fighting Females: Sexually-Dimorphic Antipredator Behavior and Locomotor Performance Is Explained by Morphology in Bark Scorpions (Centruroides vittatus). PLoS ONE, 2014; 9 (5): e97648 DOI: 10.1371/journal.pone.0097648

Cite This Page:

PLOS. "Meek male and fighting female scorpions." ScienceDaily. ScienceDaily, 28 May 2014. <www.sciencedaily.com/releases/2014/05/140528180224.htm>.
PLOS. (2014, May 28). Meek male and fighting female scorpions. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2014/05/140528180224.htm
PLOS. "Meek male and fighting female scorpions." ScienceDaily. www.sciencedaily.com/releases/2014/05/140528180224.htm (accessed October 20, 2014).

Share This



More Plants & Animals News

Monday, October 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

White Lion Cubs Born in Belgrade Zoo

White Lion Cubs Born in Belgrade Zoo

AFP (Oct. 20, 2014) Two white lion cubs, an extremely rare subspecies of the African lion, were recently born at Belgrade Zoo. They are being bottle fed by zoo keepers after they were rejected by their mother after birth. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
Traditional Farming Methods Gaining Ground in Mali

Traditional Farming Methods Gaining Ground in Mali

AFP (Oct. 20, 2014) He is leading a one man agricultural revolution in Mali - Oumar Diatabe uses traditional farming methods to get the most out of his land and is teaching others across the country how to do the same. Duration: 01:44 Video provided by AFP
Powered by NewsLook.com
Goliath Spider Will Give You Nightmares

Goliath Spider Will Give You Nightmares

Buzz60 (Oct. 20, 2014) An entomologist stumbled upon a South American Goliath Birdeater. With a name like that, you know it's a terrifying creepy crawler. Sean Dowling (@SeanDowlingTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-Fuel Impala

Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-Fuel Impala

3BL Media (Oct. 20, 2014) Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-fuel Impala Video provided by 3BL
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