Navigation Links
Male elephants woo females with precise chemistry

New Zealand.

Scientists have assumed that only one form of frontalin would be made by elephants, but by merely changing the ratios of frontalin's enantiomer composition, "you're actually changing the message signals, and you end up having a signal that is essentially different," Greenwood added. "It's not just a single message."

The research team analyzed secretion samples from six male elephants and found that the pheromone is first detectable in the late teens, with the quantity secreted rising about 15-fold over a 25-year life span. Young males secreted significantly more of the "plus" frontalin than "minus," but the ratios became almost equal as the elephant matured, especially between ages 31 and 43.

Musth periods get longer as the males age, according to the study, and, importantly, the enantiomeric composition of the frontalin secreted is almost equal in the middle part of a musth episode, a period of prime signaling by male elephants. In contrast, at the end of the physiologically exhausting musth episode, the ratio becomes more varied so that at the end of musth, the ratio is askewed toward the minus enantiomer, allowing other males and females to detect the ending of musth.

The team then tested the effect the various enantiomer ratios had on the elephants. They examined ovulating or "follicular" females, and females that were either pregnant or in a non-reproductive "luteal" phase. They also tested young and old males. It found that low concentrations of frontalin, represented when the enantiomer ratio is more "plus" than "minus," was of mild interest to both young and old males, but when the ratio became balanced - equal amounts of plus and minus frontalin - males of all ages, as well as luteal-phase and pregnant females, were repulsed. Only ovulating females were attracted.

The study's results indicate that the ratio of frontalin enantiomers allows other elephants to distinguish both the maturity of male elepha
'"/>

Source:Oregon Health & Science University


Page: 1 2 3

Related biology news :

1. Genetic analysis of Asian elephants in India reveals some surprises
2. WWF peeks into mysterious life of Borneos pygmy elephants
3. Drunken elephants: The marula fruit myth
4. Serengeti patrols cut poaching of buffalo, elephants, rhinos
5. Mother birds increase progesterone to hatch females
6. New study explores beetle species with two forms of females
7. Male rivalry increases when females at most fertile, say researchers
8. Brain differences could explain why males and females experience pain relief differently
9. UCLA study finds same genes act differently in males and females
10. Choosy females make colourful males
11. Zebra finch males prefer females with exaggerated maternal traits
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Male elephants woo females with precise chemistry

(Date:10/17/2014)... To date, antidotes ... doctors are often limited to supportive therapy such as induced ... of drugs involved. So what can be done if a ... professor Jean-Christophe Leroux from the Institute of Pharmaceutical Sciences at ... "The task was to develop an agent that could eliminate ...
(Date:10/16/2014)... challenged conventional thinking on how the bowel lining develops ... how bowel cancer starts. , The researchers produced evidence ... the ,crypts, that are a feature of the bowel ... bowel cancer development, a controversial finding as scientists are ... 3D imaging technologies, Dr Chin Wee Tan and Professor ...
(Date:10/16/2014)... NXT-ID, Inc. (NASDAQ: NXTD ... company focused on the growing mobile commerce market announces ... the Smart Wallet, at the 13 th annual ... global conference on the intersection of technology and the ... , founder and publisher of the Strategic News Service™, ...
Breaking Biology News(10 mins):Emergency aid for overdoses 2Emergency aid for overdoses 3Cryptic clues drive new theory of bowel cancer development 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3
... 14, 2011) Developing healthy habits like drinking milk as ... risk for type 2 diabetes, according to new research in ... Nutrition (1). Researchers found that milk-drinking ... lifelong habit that was associated with a 43 percent lower ...
... the formal scientific naming of all plants, algae and fungi ... need to follow when they describe new species. Details of ... for algae, fungi and plants, are laid out by Dr ... Central,s open access journal BMC Evolutionary Biology . It ...
... at RIKEN has clarified the location and dynamics of ... Chara australis . The findings reveal that these ... insight into previously-unknown functions of the vacuole in cellular ... reactions that sustain all living organisms, play a central ...
Cached Biology News:Bringing botany into the 21st Century 2New technique elucidates dynamics of plant cell metabolites 2
(Date:10/25/2014)... -- RegeneRx Biopharmaceuticals, Inc. (OTCBB: RGRX) ("the Company" or "RegeneRx") ... Symposium on Thymosins in Health and Disease in ... thymosin beta 4 (TB4) linked with rhodamine (a fluorescent ... a rodent model of stroke, it was visualized outside ... functional tissue of the brain).   The leakage of TB4 ...
(Date:10/22/2014)... -- Research and Markets has announced ... Market (Product types, Application, Technology, End User and ... Demand, Insights, Analysis, Research, Report, Opportunities, Segmentation and ... offering. This new report titled, ... and Geography) Global Size, Industry Analysis, Trends, Opportunities, ...
(Date:10/22/2014)... Involution Studios , a healthcare software design ... Understanding Ebola . The goal of the ... follow informative tool for anyone wanting to know more ... , "As the news has spread in all directions ... not only a healthcare crisis with global impact, but ...
(Date:10/22/2014)... According to new market research report "Cloud ... Deployment & Support), by Service Model (SaaS, PaaS, ... (Hybrid & Community)) - Global Forecast to 2019", ... Professional Services Market into various sub-segments with an ... identifies the drivers and restraints for this market ...
Breaking Biology Technology:Researchers Report Thymosin Beta 4 Crosses Blood-Brain Barrier In Animal Stroke Model 2Global DNA Diagnostics Market (Product types, Application, Technology, End User and Geography) - Forecast to 2020 2Global DNA Diagnostics Market (Product types, Application, Technology, End User and Geography) - Forecast to 2020 3Involution Studios' Ebola Infographic Provides Key Disease Information and Statistics at a Glance 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 4Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 5
... For reliable whole genome amplification from human mitochondrial DNA in ... , ... genome amplification from human mitochondrial,DNA in total DNA samples. The ... nuclear,DNA, thus avoiding the need for time-consuming isolation of mitochondrial ...
... RNAi screening , , ... FlexiPlate siRNA can be ordered at 0.1 nmol, 0.25 nmol, and 1 nmol scales ... maximum flexibility, , select siRNAs and specify plate layout at the ... , Advantages of ...
... Human plasma and serum represents an important biological material for ... range in protein concentration , remains a ... the very low concentration of biomarker proteins in the presence of ... effective strategy is to remove 99% , ...
Cached Biology Technology:REPLI-g Mitochondrial DNA Kit 2REPLI-g Mitochondrial DNA Kit 3FlexiPlate siRNA 2FlexiPlate siRNA 3FlexiPlate siRNA 4Protein Depletion for Plasma and Serum Proteomic Analysis 2Protein Depletion for Plasma and Serum Proteomic Analysis 3Protein Depletion for Plasma and Serum Proteomic Analysis 4Protein Depletion for Plasma and Serum Proteomic Analysis 5Protein Depletion for Plasma and Serum Proteomic Analysis 6Protein Depletion for Plasma and Serum Proteomic Analysis 7Protein Depletion for Plasma and Serum Proteomic Analysis 8Protein Depletion for Plasma and Serum Proteomic Analysis 9Protein Depletion for Plasma and Serum Proteomic Analysis 10Protein Depletion for Plasma and Serum Proteomic Analysis 11Protein Depletion for Plasma and Serum Proteomic Analysis 12Protein Depletion for Plasma and Serum Proteomic Analysis 13Protein Depletion for Plasma and Serum Proteomic Analysis 14Protein Depletion for Plasma and Serum Proteomic Analysis 15Protein Depletion for Plasma and Serum Proteomic Analysis 16Protein Depletion for Plasma and Serum Proteomic Analysis 17Protein Depletion for Plasma and Serum Proteomic Analysis 18Protein Depletion for Plasma and Serum Proteomic Analysis 19Protein Depletion for Plasma and Serum Proteomic Analysis 20Protein Depletion for Plasma and Serum Proteomic Analysis 21Protein Depletion for Plasma and Serum Proteomic Analysis 22Protein Depletion for Plasma and Serum Proteomic Analysis 23Protein Depletion for Plasma and Serum Proteomic Analysis 24Protein Depletion for Plasma and Serum Proteomic Analysis 25Protein Depletion for Plasma and Serum Proteomic Analysis 26Protein Depletion for Plasma and Serum Proteomic Analysis 27Protein Depletion for Plasma and Serum Proteomic Analysis 28Protein Depletion for Plasma and Serum Proteomic Analysis 29Protein Depletion for Plasma and Serum Proteomic Analysis 30Protein Depletion for Plasma and Serum Proteomic Analysis 31
Madin-Darby bovine kidney (MDBK) cells Source: Cell Lysate Form: Ready to Use Application: Western Blotting Control...
... Mutation Explorer processes up to 48 lanes, ... Data input can be from either slab ... or primer chemistries. The detection parameters in ... to analyst consistency. We have built ...
Molecular Biological Resources offers bulk quantities of existing protein products. Please see the Chimerx divisions website for existing products and contact lloconne@molbiores.com for pricing....
... Quality ISO 9001:2000 Certified ... All Precedures Validated, SOP's Training ... Process for All Procedures GLP Documentation Upon ... one stop shopping point for all your ...
Biology Products: