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:2/7/2017)... Ind. , Feb. 7, 2017 Zimmer ... leader in musculoskeletal healthcare, will present at the LEERINK ... New York Palace Hotel on Wednesday, February 15, 2017 ... live webcast of the presentation can be accessed at ... replay following the conference via Zimmer Biomet,s Investor Relations ...
(Date:2/6/2017)... According to Acuity Market Intelligence, ongoing ... to continue to embrace biometric and digital identification ... Border Control (ABC) eGates and 1436 Automated Passport ... 163 ports of entry across the globe. Deployments ... combined CAGR of 37%. APC Kiosks reached 75% ...
(Date:2/3/2017)... A new independent identity strategy consultancy firm ... . Designed to fill a critical niche in technical ... partners Mark Crego and Janice Kephart ... identity expertise that span federal governments, the 9/11 Commission, ... combined expertise has a common theme born from a ...
Breaking Biology News(10 mins):
(Date:2/22/2017)... , Feb. 22, 2017  PrimeVax Immuno-Oncology, Inc. announced ... presenting at the Annual Biocom Global Life Science Partnering ... at 11:15 AM, at the Torrey Pines Lodge, in ... the organizers at Biocom who have chosen our company, ... of biotechnology companies, investors, and clinical researchers," said Mr. ...
(Date:2/22/2017)... ... February 22, 2017 , ... ... provider of women’s health, primary care, and specialty education, announced today it ... Education (ACCME). ACCME’s Accreditation with Commendation is a six-year accreditation and is ...
(Date:2/22/2017)... ... February 22, 2017 , ... ... and scientists from around the world, is pleased to announce the 2nd annual ... 23, 2017. This premier, online-only conference focused on the development and advancements in ...
(Date:2/22/2017)... 22, 2017 Dublin ... "Global Biological Crop Protection (Bio-Pesticide) Market-By Type, By Application, By End ... to their offering. ... Global Biological Crop Protection Market is forecasted to grow at ... growth in biopesticide or biological crop protection market is driven by ...
Breaking Biology Technology: