Navigation Links
Habitat microstructure drives salamander metamorphosis

Whether salamanders transform into their terrestrial, adult form or retain their aquatic, juvenile form depends on the nature of the streambed where they develop.

A study published today in the open access journal BMC Biology reveals that the Oklahoma salamander Eurycea tynerensis metamorphoses into a more terrestrial adult form in streambeds composed of fine, tightly packed gravel but retains its juvenile, or paedomorphic, form in streambeds made of large, loosely packed particles. This study highlights how a simple difference in habitat microstructure can have a major influence on patterns of development, morphology and evolution.

Ronald Bonett and Paul Chippindale from the University of Texas at Arlington, Texas, USA, analysed the type, size and degree of sorting of streambed sediments for 22 populations, 11 paedomorphic and 11 metamorphic, of the plethodontid salamander E. tynerensis living on the Ozark Plateau in south-central North America.

Bonett and Chippindale's results show that paedomorphic salamanders prevailed in streambeds made of large well-sorted gravel, whereas metamorphic salamanders were found where streambeds consisted of small, unsorted sediments. The authors found a strong negative correlation between small streambed sediments and paedomorphosis.

Bonett and Chippindale explain that large gravel creates porous streambeds with large spaces between particles, where aquatic paedomorphic salamanders can access sub-surface water during dry months. However, if these spaces are filled in by small particles, metamorphosis is the only way they can survive when surface streams dry-up.


'"/>

Source:BioMed Central


Page: 1

Related biology news :

1. Habitat use by North Pacific right whales, Eubalaena japonica, in the Bering Sea and Gulf of Alaska
2. Unchecked DNA replication drives earliest steps toward cancer
3. Climate change drives widespread amphibian extinctions
4. Mindless autopilot drives people to underestimate food decisions
5. Buildup of damaged DNA in cells drives aging
6. A genetic gang of 4 drives spread of breast cancer
7. Discovery of an American salamander where it shouldnt be: Korea
8. Elusive salamanders have role in developing new sampling models
9. Butterflies lose body fat during metamorphosis
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Habitat microstructure drives salamander metamorphosis

(Date:12/11/2014)... , Dec. 09, 2014 Research and ... ( http://www.researchandmarkets.com/research/9ql3kr/biometrics_market ) has ... in India 2015-2019" report to their offering. ... this market is the adoption of multimodal biometric ... characteristic of an individual for verification and identification ...
(Date:12/11/2014)... 10, 2014  Data Sciences International (DSI), the ... a new series of digital telemetry implants to ... M series, part of the PhysioTel™ Digital platform, ... possible physiologic data when incorporating functional endpoints into ... to toxicology studies has evolved from short ECG ...
(Date:12/10/2014)...  Valencell, a leader in performance biometric data sensor ... from its licensees for highly accurate, clinically validated biometric ... coming from fitness and health sectors, but first responders/military ... is only as useful as the biometric data it ... in long-term mass consumer adoption of wearable products," said ...
Breaking Biology News(10 mins):Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2New telemetry implants expected to change how large animal toxicology studies are conducted 2Wearable Technology Products Demand Highly Accurate Biometric Technology 2
... from the European Molecular Biology Laboratory (EMBL) in Heidelberg, ... UK, have revealed new insights into how sex chromosomes ... the fact that males have only one copy of ... enzyme distinguishes between male and female sex chromosomes in ...
... regions of the world, the impact of human activity ... The high world population growth rate and the expansion ... climatic changes (longer periods of drought, irregular rainfall patterns) ... of desertification. According to World Soil Information (ISRIC) rate, ...
... trillions of stowaways in the water held in their ... species could be released into new environments. Disease-causing microbes ... health, according to an article in the May issue ... or skullduggery at work here, said Professor Fred Dobbs ...
Cached Biology News:X chromosome exposed 2Reforestation using exotic plants can disturb the fertility of tropical soils 2Reforestation using exotic plants can disturb the fertility of tropical soils 3Microbial stowaways: Are ships spreading disease? 2
(Date:12/24/2014)... (PRWEB) December 23, 2014 ... series is designed to introduce cutting edge ... users and partners of platform upgrades. This ... benefits; empowering users in their quest to ... tools. , According to SoundConnect’s Marketing Manager, ...
(Date:12/24/2014)... Texas (PRWEB) December 23, 2014 ... methyl mercaptan such as its definition, classification, ... presents product specification, manufacturing process, and product ... technology and applications. The analysis also covers ... marketing channels, industry development trend and proposals. ...
(Date:12/24/2014)... 2014 Pipette.com announces their Holiday ... can submit their #HolidayInTheLab pictures for a chance to ... , For those struggling to think of a holiday ... in the Lab Contest provides the ideal holiday presents. ... to send pictures of their chemistree, holiday sweaters, as ...
(Date:12/24/2014)... , December 23, 2014 ... Algeria , out today and available for free download ... actors driving change and growth in the sector today. ... scored notable successes has been in developing a homegrown pharmaceutical ... percent local production still remains some way off. A cursory ...
Breaking Biology Technology:SoundConnect Launches Leading Edge Business Communications Webinar Series 2SoundConnect Launches Leading Edge Business Communications Webinar Series 3Worldwide Methyl Mercaptan Market 2015-2020 Forecasts on Development & Trends Now Available at ReportsnReports.com 2Major Pipette Distributor Pipette.com Announces their Holiday in the Lab Contest 2PharmaBoardroom Releases New Algeria Pharmaceuticals Report 2PharmaBoardroom Releases New Algeria Pharmaceuticals Report 3
... Cord Blood America, Inc.,(OTC Bulletin Board: CBAI), the ... ) focused on bringing the life,saving potential ... reported that CorCell Companies Inc., Philadelphia, Pa., which ... profitable quarter,ever for the three months ending March ...
... WuXi PharmaTech (NYSE:,WX), a leading pharmaceutical, biotechnology ... with operations in China and the United,States, ... Dr. Peng Wang as Vice,President of Discovery ... Prior to joining WuXi PharmaTech, Dr. ...
... Pharmaceutical Inc.,("Dragon Pharma" or the "Company" TSX: DDD; ... today announced that June 26,2008 has been set ... The Annual Meeting of Dragon stockholders will ... Tower, Fuhua Three Road, Shenzhen, China,at 2:00 p.m. ...
Cached Biology Technology:Cord Blood America Reports CorCell, Its Major Acquisition in 2006, Turns Profitable 2WuXi PharmaTech (NYSE: WX) Appoints Dr. Peng Wang as VP of Discovery Biology 2
Mouse monoclonal [M2II-12] to MRP2 ( Abpromise for all tested applications). entrezGeneID: 1244 SwissProtID: Q92887...
Mouse monoclonal antibody to ANAPC2 - anaphase promoting complex subunit 2...
... The MAX POWER 500V Programmable ... operate instruments which can handle virtually ... to high current blotting. It is ... text displays. The MAX POWER Programmable ...
The Programmable MP-3500P-F Power Supply can be applied for any Microfluidic application....
Biology Products: