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:4/11/2017)... April 11, 2017 Crossmatch®, a globally-recognized ... solutions, today announced that it has been awarded ... Projects Activity (IARPA) to develop next-generation Presentation Attack ... "Innovation has been a driving force within ... will allow us to innovate and develop new ...
(Date:4/6/2017)... LONDON , April 6, 2017 ... Control, RFID, ANPR, Document Readers, by End-Use (Transportation & ... Energy Facility, Oil, Gas & Fossil Generation Facility, Nuclear ... Healthcare, Educational, Other) Are you looking for ... Authentication sector? ...
(Date:4/4/2017)... , April 4, 2017   EyeLock LLC ... announced that the United States Patent and Trademark Office ... broadly covers the linking of an iris image with ... transaction) and represents the company,s 45 th issued ... patent is very timely given the multi-modal biometric capabilities ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... LAGUNA HILLS, Calif. , Oct. 11, 2017 ... London (ICR) and University of ... prognostic tool to risk-stratify patients with multiple myeloma (MM), in ... nine . The University of Leeds ... by Myeloma UK, and ICR will perform the testing services ...
(Date:10/10/2017)... (PRWEB) , ... October 10, ... ... development-stage cancer-focused pharmaceutical company advancing targeted antibody-drug conjugate (ADC) therapeutics, today confirmed ... targeted HPLN (Hybrid Polymerized Liposomal Nanoparticle), a technology developed in collaboration with ...
(Date:10/10/2017)... (PRWEB) , ... October 10, 2017 , ... ... innovation and business process optimization firm for the life sciences and healthcare industries, ... conference in San Francisco. , The presentation, “Automating GxP Validation for Agile ...
(Date:10/9/2017)... ... October 09, 2017 , ... The Giving ... marijuana products targeting the needs of consumers who are incorporating medical marijuana into ... in Phoenix, Arizona. , As operators of two successful Valley dispensaries, The Giving ...
Breaking Biology Technology: