Navigation Links
Female katydids prefer mates 'cool' in winter and 'hot' in summer

COLUMBIA, Mo. Katydid (or didnt she?) respond to the mating call of her suitors. According to scientists at the University of Missouri, one species of katydid may owe its ecological success and expanded habitat range to the ability of male katydids to adjust their mating calls to attract females.

Males of the katydid species Neoconocephalus triops, which can be found from Peru to Missouri, produce calls to attract females for mating that change with the seasons. The males summer calls are much faster than their winter calls. Johannes Schul, MU associate professor of biological sciences, found that females were attracted only by a specific speed of the calls and this preference changed with temperature.

Warm females preferred much faster calls than cold females, Schul said. The fast summer calls attracted females only at high temperatures and the slow winter calls only at lower temperatures. Thus, during the winter, females prefer cool guys, and in the summer they like them hot.

According to Schul, male calls exhibit substantial flexibility. At equal temperatures, summer males, or those that mature during the summer, produce calls with a higher pulse rate than winter males, or those that mature in late winter/early spring. The research team tested the katydids preferences by placing females on a spherical treadmill and tracking the speed and accuracy of their responses to recordings of male calls.

The really amazing thing about the katydids is that these specific calls are what keeps them from mating with the wrong species, Schul said. Its amazing how these calls can be flexible, but still work to maintain their specificity.

In the study, females had strong preferences for pulse rates within a narrow range. The attractive ranges did not differ between summer and winter females. Both male pulse rate of calls and female preference for pulse rate changed with ambient temperature. Female preference changed more than male calls. The summer call was only attractive at 25 degrees Celsius (77 degrees Fahrenheit), whereas the slower winter call was only attractive at 20 degrees Celsius (68 degrees Fahrenheit).

Schul said further studies, conducted with graduate student Oliver Beckers in the MU College of Arts and Science, may help determine if females force males to use two different calls or whether males having two different calls actually force females to adjust their preferences.


Contact: Bryan E. Jones
University of Missouri-Columbia

Related biology news :

1. Sex is thirst-quenching for female beetles
2. UT Southwestern researchers identify hundreds of genes controlling female fertility
3. Why do males and females frequently differ in body size and structure?
4. X-effect: female chromosome confirmed a prime driver of speciation
5. Vaginal reconstruction not needed for most inter-sex females, Hopkins study shows
6. Gene in male fish lures females into sex
7. New evidence for female control in reproduction
8. Men unaware of their cancer risk when female relatives test positive for BRCA mutation
9. How do you know whether you are male or female?
10. Girls prefer pink, or at least a redder shade of blue
11. Ripe fruit preferred
Post Your Comments:
Related Image:
Female katydids prefer mates 'cool' in winter and 'hot' in summer
(Date:6/14/2017)... -- IBM (NYSE: IBM ) is introducing several innovative partner ... developing collaboration between startups and global businesses, taking place in ... event, nine startups will showcase the solutions they have built ... France is one of ... 30 percent increase in the number of startups created between ...
(Date:5/16/2017)... --  Bridge Patient Portal , an enterprise patient ... Systems , an electronic medical record solutions developer ... a partnership to build an interface between the ... products, including Centricity Practice Solution (CPS), Centricity Business ... integrations will allow healthcare delivery networks using GE ...
(Date:4/19/2017)... New York , April 19, 2017 ... competitive, as its vendor landscape is marked by the ... the market is however held by five major players ... Safran. Together these companies accounted for nearly 61% of ... of the leading companies in the global military biometrics ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... ... 10, 2017 , ... For the second time in three ... Mentoring Award. Representatives of the FirstHand program travelled to Washington, D.C. Tuesday, October ... US2020’s mission is to change the trajectory of STEM education in America by ...
(Date:10/10/2017)... SANTA BARBARA, CALIFORNIA (PRWEB) , ... October 10, ... ... risk management, technological innovation and business process optimization firm for the life sciences ... the BoxWorks conference in San Francisco. , The presentation, “Automating GxP ...
(Date:10/9/2017)... ... , ... At its national board meeting in North Carolina, ARCS® Foundation ... of Physics and Astronomy, has been selected for membership in ARCS Alumni Hall ... 2015 Breakthrough Prize in Fundamental physics for the discovery of the accelerating expansion of ...
(Date:10/7/2017)... Seattle, WA (PRWEB) , ... ... ... the industry leader in Hi-C-based genomic technologies, launched its ProxiMeta™ Hi-C metagenome ... the ProxiMeta Hi-C kit and accompanying cloud-based bioinformatics software to perform Hi-C ...
Breaking Biology Technology: