Printer Friendly

Female crickets fall for louder songs sung by younger males.

London, Jan 15 (ANI): Female crickets fall for the higher-pitched and louder songs sung by younger males, suggests a study.

The study has challenged a well-established theory that females prefer older males because their longevity shows they have good genes, reports New Scientist.

Luke Verburgt of the University of Pretoria, South Africa and colleagues recorded the mating songs of the 25 male field crickets (Gryllus bimaculatus), when they were young (10 to 12 days old) and older (48 to 50 days old).

They analysed the songs' traits, the length of the syllables and the song's frequency and found that nearly all the traits changed with age.

Meanwhile, to test if females preferred the older or younger songs, the scientists used software to mix recordings and create 'average' old and young songs.

Two speakers were then placed on opposite sides of a box and simultaneously played the average songs to 21 females four times.

It was found that females chose the young male song a 90 percent of the time.

Verburgt said females probably prefer younger crickets because damage associated with ageing can mutate DNA and reduce sperm quality.

Trish Fleming, a behavioural biologist at Murdoch University in Australia, said, "Sperm ages rapidly and older testes are not as good as younger testes in producing lots of viable sperm."

As a result, younger males are more likely to be capable of fertilising all a female cricket's eggs. (ANI)

Copyright 2011 Asian News International (ANI) - All Rights Reserved.

Provided by Syndigate.info an Albawaba.com company
COPYRIGHT 2011 Al Bawaba (Middle East) Ltd.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2011 Gale, Cengage Learning. All rights reserved.

Article Details
Printer friendly Cite/link Email Feedback
Publication:Asian News International
Date:Jan 15, 2011
Words:254
Previous Article:Pakistan on top after day one of Wellington Test against Kiwis.
Next Article:Cricket Australia must make cricket a more inclusive game in Australia: Jones.
Topics:

Terms of use | Privacy policy | Copyright © 2022 Farlex, Inc. | Feedback | For webmasters |