HOME >> BIOLOGY >> NEWS
Groundbreaking study by Field Museum scientists explains mane variation in lions

CHICAGO--An article appearing in the current issue of the Journal of Zoology sheds light on several longstanding misconceptions regarding the controversial topic of mane variability among wild lions. This comprehensive scientific assessment of mane variation--including "manelessness"--is a first and took nearly seven years to complete.

According to the overall findings of the study, wild lions generally develop manes in accordance with local climate regimes. In Equatorial east Africa, climate is determined by elevation. Thus lions with the most profuse manes occur at the upper limit of their altitudinal range, while similar aged males in the lowest and warmest environments like Tsavo typically carry only modest or scanty manes.

However, the authors also found, paradoxically, that the majority of lions in regions like the greater Tsavo ecosystem (which is famed for its "maneless" lions), did appear to acquire respectable manes, eventually, contrary to most recent popular and scientific accounts of the lions from that region.

"We knew about the climate/elevation correlation since we were the first to publish those preliminary results in GEO 2001, but this new development really threw us for a loop," says Tom Gnoske, of the Field Museum's Zoology Department and senior author of the paper. "However once we analyzed all of the statistical data we found a very strong correlation linking increased age and continued mane development, a significant variable ignored by all previous authors."

Statistical data from this study demonstrates that the onset of mane development in lions living below an altitude of 800 meters on or near the equator is delayed, and that the "rate" or speed at which a mane develops in lions from those regions is slower on average than that of the more familiar lions living in the cooler, higher altitudes of the greater Serengeti ecosystem and elevated plains extending northward, suc
'"/>

Contact: Greg Borzo
gborzo@fieldmuseum.org
312-665-7106
Field Museum
25-Sep-2006


Page: 1 2 3 4

Related biology news :

1. Kaiser Permanente Unveils Groundbreaking Genetic Research Program
2. Kaiser Permanente Unveils Groundbreaking Genetic Research Program
3. Groundbreaking research highlights myriad health benefits of flavanol-rich cocoa
4. Groundbreaking study shows adult stem cells have same ability to self-renew as embryonic
5. New study warns limited carbon market puts 20 percent of tropical forest at risk
6. Clones on task serve greater good, evolutionary study shows
7. Pollution causes 40 percent of deaths worldwide, study finds
8. A study by the MUHC and McGill University opens a new door to understanding cancer
9. New study suggests Concord grape juice may provide protection against breast cancer
10. Preclinical study links gene to brain aneurysm formation
11. In limiting life span, study finds booming bacteria innocent

Post Your Comments:
(Date:4/17/2014)... ALBUQUERQUE, N.M. A credit-card-sized anthrax detection cartridge developed ... small business makes testing safer, easier, faster and cheaper. ... causes anthrax, is commonly found in soils all over ... illness in both humans and animals. The bacteria can ... to B. anthracis may occur through skin ...
(Date:4/17/2014)... bone marrow need to produce hydrogen sulfide in order ... a new study from the Center for Craniofacial Molecular ... USC. , Professor Songtao Shi, principal investigator on the ... the cells governs the flow of calcium ions. The ... results in osteogenesis, or the creation of new bone ...
(Date:4/17/2014)... and pathogens that devastate honeybees in Europe, Asia and ... do not appear to be impacting native honeybee populations ... researchers., The invasive pests include including Nosema microsporidia ... honeybees appear to be resilient to these invasive pests, ... control pests in Europe, Asia and the United States ...
Breaking Biology News(10 mins):Pocket-sized anthrax detector aids global agriculture 2Pocket-sized anthrax detector aids global agriculture 3East African honeybees are safe from invasive pests… for now 2East African honeybees are safe from invasive pests… for now 3
(Date:1/15/2014)... This webinar will focus on EMA and ... in biosimilars. , Regulatory frameworks are evolving many countries ... the complex nature of biopharmaceuticals makes the demonstration of ... challenging. Based on the specific aspects of biosimilar drug ...
(Date:1/15/2014)... Two champions of science, technology, engineering, ... an annual competition for middle and high school students ... STEM study. The competition presents students with real-world problems ... Aptitude, Mathematics, and Sciences is a program administered ...
(Date:1/15/2014)... Scottsdale, Arizona (PRWEB) January 15, 2014 ... growth for Scottsdale’s Brain State Technologies®. They saw continued ... University Medical Center who were awarded a $1 million ... papers published in “Brain and Behavior” a peer reviewed ...
(Date:1/15/2014)... Jan. 15, 2014 TaiGen Biotechnology Company, Limited ("TaiGen") ... with R-Pharm, a leading Russian pharmaceutical company, to develop ... Russian Federation , Turkey ... (CIS). Nemonoxacin is a novel antibiotic for the treatment of ...
Breaking Biology Technology:Xtalks Life Sciences Webinar Examines Safety Assessment of Biosimilars 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5Dynamic Innovative Technology Showcased at Scottsdale Company’s Open House 2Dynamic Innovative Technology Showcased at Scottsdale Company’s Open House 3TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 2TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 3TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 4
Cached News: