Navigation Links
Millipede border control better than ours
Date:12/23/2011

A mysterious line where two millipede species meet has been mapped in northwest Tasmania, Australia. Both species are common in their respective ranges, but the two millipedes cross very little into each other's territory. The 'mixing zone' where they meet is about 230 km long and less than 100 m wide where carefully studied.

The mapping was done over a two-year period by Dr Bob Mesibov, who is a millipede specialist and a research associate at the Queen Victoria Museum and Art Gallery in Launceston, Tasmania. His results have been published in the open access journal ZooKeys.

'I have no idea why the line is so sharp', said Dr Mesibov. 'The boundary runs up and down hills, crosses rivers and different bedrocks and soils, and ignores vegetation type and climate differences. Its position and its sharpness seem to be the result of an unexplained biological arrangement between the two millipede species.'

Biogeographers use the term 'parapatry' for the case where two species ranges meet but do not overlap, or overlap very little. Dr Mesibov said that parapatry has been reported before in other species of millipedes and in other terrestrial invertebrate animals, in Tasmania and elsewhere in the world. However, parapatric boundaries often parallel a geographical feature, such as a ridgeline, or a steep rainfall gradient.

'There does not seem to be an ecological or a geographic explanation for this particular boundary, or for any part of it. It is also longer than any other parapatric boundary I know about. At 230 km, it is 50% longer than the boundary between England and Scotland, and the 'border control' is a lot better than what we humans can do.'

The two millipede species, Tasmaniosoma compitale and T. hickmanorum, are in the same genus and thought to be closely related. They were first scientifically described in 2010, by the same author and again in ZooKeys. The parapatric boundary was mapped as a background study for later investigations of speciation in this group of millipedes, and of the mechanism of parapatry.


'/>"/>

Contact: Dr. Bob Mesibov
mesibov@southcom.com.au
Pensoft Publishers
Source:Eurekalert  

Related biology news :

1. Genetic study of cave millipedes reveals isolated populations and ancient divergence between species
2. The secret life of millipedes
3. Atlas of European Millipedes published by Pensoft
4. Customs and Border Protection Opens Pedestrian Border Crossing System in El Paso with Support from Unisys
5. Trees on tundras border are growing faster in a hotter climate
6. La Jolla Institute discovers novel mechanism for preventing infection via bodys mucosal borders
7. ESHRE sets standards for cross-border reproductive care
8. Scientists Without Borders awards $10,000 to solvers of maternal health and nutrition challenge
9. Crossing borders in language science: What bilinguals tell us about mind and brain
10. Cross-border conservation vital to protect birds in a climate-change world
11. Porous China-Myanmar border allowing illegal wildlife trade
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Millipede border control better than ours
(Date:4/19/2016)... -- The new GEZE SecuLogic access control ... system solution for all door components. It can be ... interface with integration authorization management system, and thus fulfills ... dimensions of the access control and the optimum integration ... considerable freedom of design with regard to the doors. ...
(Date:3/31/2016)... RATON, Florida , March 31, 2016 ... LEGX ) ("LegacyXChange" or the "Company") ... for potential users of its soon to be launched ... video ( https://www.youtube.com/channel/UCyTLBzmZogV1y2D6bDkBX5g ) will also provide ... the use of DNA technology to an industry that ...
(Date:3/22/2016)... , PROVO and ... -- Newborn Screening Ontario (NSO), which operates the highest ... for molecular testing, and Tute Genomics and UNIConnect, leaders ... technology respectively, today announced the launch of a project ... sequencing (NGS) testing panel. NSO has ...
Breaking Biology News(10 mins):
(Date:5/24/2016)... (PRWEB) , ... May 24, 2016 , ... ... a newly re-branded identity. The new Media Cybernetics corporate branding reflects a results-driven ... of imaging and image analysis. The re-branding components include a crisp, refreshed logo ...
(Date:5/23/2016)... Oxitec CEO Hadyn Parry will testify ... before the United States House Committee on Science, Space and ... controlling the spread of the Aedes aegypti mosquito, ... (Logo: http://photos.prnewswire.com/prnh/20150630/227348 ) Oxitec has pioneered ... in Brazil , Panama ...
(Date:5/22/2016)... ... May 22, 2016 , ... Doctors in Rome say micronutrients found ... cancer, malignant mesothelioma. Surviving Mesothelioma has just posted an article on the new research. ... Rome’s Department of Clinical Sciences and Translational Medicine evaluated more than 150 studies on ...
(Date:5/20/2016)... ... May 20, 2016 , ... The recent recall by Costco and Trader Joes ... News on May 12, 2016(1), demonstrates the need for faster and more cost effective ... firm, PathSensors, Inc. , PathSensor’s latest solution uses a biosensor technology ...
Breaking Biology Technology: