Navigation Links
Female katydids prefer mates 'cool' in winter and 'hot' in summer
Date:3/11/2008

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
jonesbry@missouri.edu
573-882-9144
University of Missouri-Columbia
Source:Eurekalert  

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:
*Name:
*Comment:
*Email:
Related Image:
Female katydids prefer mates 'cool' in winter and 'hot' in summer
(Date:4/19/2017)... The global military biometrics market ... by the presence of several large global players. The ... major players - 3M Cogent, NEC Corporation, M2SYS Technology, ... 61% of the global military biometric market in 2016. ... military biometrics market boast global presence, which has catapulted ...
(Date:4/17/2017)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" ... its 2016 Annual Report on Form 10-K on Thursday April 13, ... ... the Investor Relations section of the Company,s website at http://www.nxt-id.com ... http://www.sec.gov . 2016 Year Highlights: ...
(Date:4/13/2017)... April 13, 2017 According to a new market ... Identity Analytics, Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, Vertical, ... Market is expected to grow from USD 14.30 Billion in 2017 to ... of 17.3%. ... MarketsandMarkets Logo ...
Breaking Biology News(10 mins):
(Date:8/11/2017)... ... August 11, 2017 , ... A staple in the community for ... will incorporate important key elements including a new digital marketing strategy and updated logo. ... them, Bill Miller has partnered with the South Texas Blood & Tissue Center for ...
(Date:8/11/2017)... (PRWEB) , ... August 11, 2017 , ... ... food production, and, in particular, more natural alternatives to synthetic ingredients,” said Matt ... of Third Wave, with the established manufacturing presence and know-how of Biorigin will ...
(Date:8/10/2017)... ... August 09, 2017 , ... Teachers from three Philadelphia ... August 14th through the 16th, the University City Science Center will kick off ... 2016, provides Philadelphia-based middle school educators an opportunity for professional development related to ...
(Date:8/10/2017)... ... ... Each year in the United States more than 300,000 people are hospitalized for ... even worse, the one-year mortality rate is high, ranging from 12 percent to 37 ... Medical Center (Sacramento) and Second Xiangya Hospital of the Central-South University (Hunan, China) might ...
Breaking Biology Technology: