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:6/23/2017)... ITHACA, N.Y. , June 23, 2017 ... a leader in dairy research, today announced a new ... help reduce the chances that the global milk supply ... this dairy project, Cornell University has become the newest ... Food Supply Chain, a food safety initiative that includes ...
(Date:5/16/2017)... 16, 2017   Bridge Patient Portal , ... MD EMR Systems , an electronic medical ... GE, have established a partnership to build an ... the GE Centricity™ products, including Centricity Practice Solution ... These new integrations will allow healthcare delivery ...
(Date:4/18/2017)... April 18, 2017  Socionext Inc., a global expert in SoC-based ... edge server, the M820, which features the company,s hybrid codec technology. ... by Tera Probe, Inc., will be showcased during the upcoming Medtec ... show at the Las Vegas Convention Center ... Click here ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... , ... October 11, 2017 , ... ... (FDA) has granted orphan drug designation to SBT-100, its novel anti-STAT3 (Signal Transducer ... treatment of osteosarcoma. SBT-100 is able to cross the cell membrane and bind ...
(Date:10/10/2017)... ... October 10, 2017 , ... For the ... won a US2020 STEM Mentoring Award. Representatives of the FirstHand program travelled to ... Experience from US2020. , US2020’s mission is to change the trajectory of STEM ...
(Date:10/10/2017)... SomaGenics announced the receipt of a Phase ... (Single Cell), expected to be the first commercially available ... from single cells using NGS methods. The NIH,s recent ... development of approaches to analyze the heterogeneity of cell ... for measuring levels of mRNAs in individual cells have ...
(Date:10/9/2017)... 2017  BioTech Holdings announced today identification and ... ProCell stem cell therapy prevents limb loss in ... demonstrated that treatment with ProCell resulted in more ... compared to standard bone marrow stem cell administration.  ... reduction of therapeutic effect.  ...
Breaking Biology Technology: