Navigation Links
A 'private bandwidth' for communication in bats: Evidence from insular horseshoe bats
Date:8/13/2007

Oxford August 13, 2007 - Do bats use their ultrasonic echolocation calls to recognise their own species" A new study in the Journal of Biogeography by Danilo Russo and colleagues suggests that this is certainly the case for horseshoe bats (Rhinolophidae). These bats find their way in the dark and detect insect prey by emitting long ultrasound calls mainly made of a constant frequency. Different rhinolophid species show different frequency values. It has been proposed that such differences are large enough to allow recognition of conspecifics.

The study proved that in Sardinia, Mediterranean (Rhinolophus euryale) and lesser (R.. hipposideros) horseshoe bats show divergence in call frequency, spacing them out more than their conspecifics living in peninsular Italy (i.e. on the mainland). Why" The reason may be the presence of a third species, the Mehelys horseshoe bat (Rhinolophus mehelyi), practically absent on the mainland but abundant in Sardinia. This bat emits frequencies falling between the other two species: if Sardinian R..euryale and R. hipposideros broadcasted the same frequency values as in peninsular Italy, there would be significant risk of overlap and, in turn, confusion in species recognition. By calling respectively at lower and higher frequencies than on the mainland, R . euryale and R. hipposideros avoid all risk of confusion.

The authors of the study suggest this may be a special case of character displacement. The maintenance of a 'private bandwidth' for communication may have crucial implications for social interactions and sexual behaviour. Noticeably, in mainland regions where the three species occur together, some overlap does occur. Bats move long distances, so gene flow may operate between populations living in sympatry (i.e. occurring in the same areas) and allopatry (living in separate areas) with R. mehelyi, countering the establishment of local differences. Being sufficiently isolated (ca. 180 km distant) from the mainland coast, Sardinia proved an ideal study area to test for the occurrence of acoustical character displacement in the absence of contact with allopatric populations. Once again, islands turned out to be excellent natural laboratories to explore evolutionary patterns and processes.


'/>"/>

Contact: Samantha Holford
samantha.holford@oxon.blackwellpublishing.com
44-018-654-76269
Blackwell Publishing Ltd.
Source:Eurekalert

Related biology news :

1. Elephants imitate sounds as a form of social communication
2. Sequencing of marine bacterium will help study of cell communication
3. Scientists journey to southern Africa to unravel the secret world of elephant communication
4. Underground tunnels discovered as means for communication between immune system cells
5. Carnegie Mellon U. transforms DNA microarrays with standard Internet communications tool
6. High-resolution light microscope reveals the fundamental mechanisms of nerve communication
7. First direct mechanical communication of mitochondria, cardiomyocyte nucleus shown
8. Immune cell communication key to hunting viruses, Jefferson immunologists show
9. Ape gestures offer clues to the evolution of human communication
10. Noise echoes in cell communications
11. Discovery of master switch for the communication process between chloroplast and nuclei of plants
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/28/2017)... PUNE, India , March 28, 2017 ... (Analog, IP, Biometrics), Hardware (Camera, Monitors, Servers, Storage Devices), ... Maintenance), Vertical, and Region - Global Forecast to 2022", ... 30.37 Billion in 2016 and is projected to reach ... 15.4% between 2017 and 2022. The base year considered ...
(Date:3/24/2017)... -- The Controller General of Immigration from Maldives Mr. ... have received the prestigious international IAIR Award for the most innovative high ... ... Maldives Immigration Controller ... (small picture on the right) have received the IAIR award for the ...
(Date:3/23/2017)... March 23, 2017 The report "Gesture Recognition and Touchless ... and Geography - Global Forecast to 2022", published by MarketsandMarkets, the market is ... of 29.63% between 2017 and 2022. Continue Reading ... ... ...
Breaking Biology News(10 mins):
(Date:7/17/2017)... (PRWEB) , ... July 17, 2017 , ... ... are characterized by a wide range of overlapping clinical features. The advancement of ... in the field of NDD research and testing. , However, designing a ...
(Date:7/16/2017)... ... 16, 2017 , ... OHAUS Corporation, a leading worldwide manufacturer ... new line of Rocking and Waving Shakers today. , Five New Models Available ... digital) for laboratory applications in a variety of environmental conditions. Rocking shakers provide ...
(Date:7/14/2017)... ... July 13, 2017 , ... Dr. Joshua Mondlick has introduced ... into his practice, Mondlick Perio, in the Phoenix area. Dr. Mondlick is ... and only FDA cleared laser treatment to re-grow bone and with significantly less pain ...
(Date:7/13/2017)... (PRWEB) , ... July 13, 2017 , ... ... URAC accreditation in Specialty Pharmacy. URAC is the independent leader in promoting healthcare ... demonstrated a comprehensive commitment to quality care, improved processes and better patient outcomes. ...
Breaking Biology Technology: