Navigation Links
Male reindeer inflate a large air sac in the neck region to emit their hoarse rutting calls

A group of European scientists have determined that a male reindeer's air sac, influencing vocal sound and neck contour, may contribute to his sexual prowess and reproductive success. The results of this research have recently been published in Journal of Anatomy.

As in other species with harem-like mating systems, the voice organs of reindeer differ according to gender. Adult males have a much larger air sac than females and the young.

In early life, growth of the air sac seems to be comparable in male and female reindeer until they reach the age of two–three years, at which point the female's air sac stops growing, whilst the male's continues to develop.

The authors of the research paper further explain that the rutting calls appear to be understood by rival males as an indicator of the caller's fighting ability.

By contrast to male red deer, who are renowned for roaring with the head elevated, male reindeer emit a hoarse rattling with the head kept low. In this posture the inflated air sac expands the neck region. Both acoustic and optical display serve to deter rival males and thereby prevent fighting, allowing to conserve energy. Simultaneously, the performance serves to attract female mating partners.

Males vocalize almost exclusively during the autumn rutting season whereas females are mostly silent during that period. Instead, vocal communication of females tends to mainly occur with their young, in the first months after the birth in summer. In mother-young communication the air sac individualizes the calls and contributes to individual recognition.


'"/>

Source:Blackwell Publishing Ltd.


Page: 1

Related biology news :

1. Scientists discover unique microbe in Californias largest lake
2. Worlds largest rainforest drying experiment completes first phase
3. NASA study finds snow melt causes large ocean plant blooms
4. New project aims to make large-scale lobster farms feasible
5. Butterfly migration could be largest known
6. Amazon symposium to address large-scale conservation
7. Inhaling large amounts of salt can cause hypertension
8. Size matters: Preventing large mammal extinction
9. Carnegie Mellon University research reveals how cells process large genes
10. Updated data on novel HPV vaccine confirms efficacy in large population
11. Free-energy theory borne out in large-scale protein folding
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/9/2016)... 9, 2016  Perkotek an innovation leader in attendance control systems is proud to ... hours, for employers to make sure the right employees are actually signing in, and ... ... ... ...
(Date:6/2/2016)... LONDON , June 2, 2016 ... has awarded the 44 million US Dollar project, ... Security Embossed Vehicle Plates including Personalization, Enrolment, and IT Infrastructure ... world leader in the production and implementation of Identity Management ... in January, however Decatur was selected ...
(Date:5/24/2016)... superior patient care by providing unparalleled technology to leaders of the medical imaging industry. ... recently added to the range of products distributed by Ampronix. Photo - ... ... ... ...
Breaking Biology News(10 mins):
(Date:12/2/2016)... ... December 02, 2016 , ... ... consortium of pharmaceutical and biotechnology companies dedicated to collaboratively developing improved chemistry, ... in supplying a vendor-supported, portable online UHPLC, with robust, probe-based sampling. ...
(Date:12/2/2016)... , Dec. 1, 2016   SurePure, Inc. ... today that the Company has concluded an agreement with ... for a 90-day period to acquire units of the ... approximately USD 3.7 million.  Concurrently with ... Tamarack under which Tamarack will seek regulatory approvals in ...
(Date:12/2/2016)... Dec. 2, 2016 /PRNewswire/ - bioLytical Laboratories, a world leader in rapid infectious disease ... Kenya,s Pharmaceutical Association members. (Photo: http://photos.prnewswire.com/prnh/20161201/444905 ) ... ... , , ... Kenya Pharmaceutical Association (KPA) to introduce the INSTI HIV Self Test to 350 pharmacy ...
(Date:11/30/2016)... CLEVELAND , Nov. 30, 2016  GenomOncology today announced ... Vice President of Medical Affairs.  Dr. Coleman ... enhancing the company,s proprietary knowledge-enabled platform. The GenomOncology software suite ... of genetic sequencing data and clinical decision support, from quality ... , ...
Breaking Biology Technology: