Navigation Links
News tips from the July issue of the American Naturalist
Date:6/20/2011

When a bad mimic is good

Nature is full of mimicscreatures that have evolved to look or act like other more dangerous animals. However, some mimics imitate their models more convincingly than others, and new research helps explain why it sometimes pays to be a bad mimic. The research looked at three species of spider, all of which mimic, with varying degrees of accuracy, aggressive and bad-tasting ants. All of the mimics were good at avoiding being eaten by predators that target spiders, the research found. But the less accurate mimics also had a spider-like ability to evade predators that eat the model ants. "So by not looking like a spider, but also not quite looking like an ant, these inaccurate mimics have the best of both worlds, escaping both spider and ant predators," said Stano Pekr, a biologist at Masaryk University in the Czech Republic and one of the study's authors. The results show that the accuracy of mimics depends on the environment and the array of predators in the area.

Stano Pekr, Martin Jarab, Lutz Fromhage, and Marie E. Herberstein, "Is the Evolution of Inaccurate Mimicry a Result of Selection by a Suite of predators? A Case Study Using Myrmecomorphic Spiders."


You're not speaking my language: Sparrows don't respond to foreign dialects

Similar to regional dialects in human languages, bird songs often differ slightly between populations of the same species. A study led by Julie Danner of Virginia Tech shows that female rufous-collared sparrows have strong preferences for mating songs sung in a local dialect, and rarely respond sexually to foreign dialects. "The research indicates that picky females may inhibit breeding between close populations," Danner said. Such reproductive isolation could ultimately cause populations to diverge into different species. For their study, Danner and her team played recordings of several mating songs for captive females. One recording was a s
'/>"/>

Contact: Kevin Stacey
kstacey@press.uchicago.edu
773-834-0386
University of Chicago Press Journals
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. NIH awards Clemson bioengineer $1.5 million to improve durability of tissue heart valves
2. Penn biophysicists create new model for protein-cholesterol interactions in brain and muscle tissue
3. Carbon sinks: Issues, markets, policy
4. MIT: Mending broken hearts with tissue engineering
5. Human genes sing different tunes in different tissues
6. UD researchers show that plants can accumulate nanoparticles in tissues
7. Neuroinformatics special issue spotlights the Neuroscience Information Framework
8. Issues at intersection of climate change and health impact global well-being
9. Single adult stem cell can self renew, repair tissue damage in live mammal
10. Columbia University scientist devises new way to more rapidly generate bone tissue
11. Building better bones and tissue in the lab
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/31/2015)... , 31 de julio de 2015 La 10 ... se celebrará por medio de BGI del 22 al 25 de ... Este año, la conferencia celebra su décimo ... ha convertido en una de las reuniones anuales más influyentes ... de las reuniones más dinámicas, entusiastas y mejores a nivel ...
(Date:7/31/2015)... 31, 2015 NXT-ID, Inc. (NASDAQ: NXTD ) ... on the growing mobile commerce market and creator of ... provisional patent 62/198989 for ELECTRONIC CRYPTO-CURRENCY MANAGEMENT ... method to advance crypto-currencies such as Bitcoin into the ... uniform way to manage all payments.  ...
(Date:7/30/2015)... 2015 Cellecta, Inc., a U.S.-based provider ... and biomarker discovery, announced the release of its ... all human protein coding genes. CRISPR technology enables ... gene,s function. Cellecta,s new Human Whole Genome CRISPR ... so that researchers can investigate in a single ...
Breaking Biology News(10 mins):La 10th International Conference on Genomics (ICG-10) se llevará a cabo en octubre 2La 10th International Conference on Genomics (ICG-10) se llevará a cabo en octubre 3NXT-ID Patents Electronic Crypto-Currency Management Technology 2NXT-ID Patents Electronic Crypto-Currency Management Technology 3NXT-ID Patents Electronic Crypto-Currency Management Technology 4CELLECTA, INC. Announces Launch of Human Whole Genome CRISPR Knockout Library 2
... gold purify the air when they are lit up ... experts have discovered. Associate Professor Zhu Huai Yong, ... that glaziers in medieval forges were the first nanotechnologists ... Professor Zhu said numerous church windows across ...
... of the drugs given to many men during their fight ... grow, researchers have found. The findings were published online this ... of the National Academy of Sciences . The results ... decades. Hormone therapy, a common treatment for men with advanced ...
... (MRI) isn,t just for capturing detailed images of the ... developed by Carnegie Mellon University scientist Eric Ahrens, MRI ... cell populations of interest in the living body. ... as immune cells, will greatly aid the study and ...
Cached Biology News:Air-purifying church windows early nanotechnology 2Why a common treatment for prostate cancer ultimately fails 2Why a common treatment for prostate cancer ultimately fails 3Why a common treatment for prostate cancer ultimately fails 4Carnegie Mellon MRI technology that non-invasively locates, quantifies specific cells in the body 2Carnegie Mellon MRI technology that non-invasively locates, quantifies specific cells in the body 3
(Date:7/30/2015)... ... July 30, 2015 , ... The 2015 Market Research Report ... the current state of the global Propanol market with a focus on the Chinese ... Dow, Carboclor, Mitsui Chemicals, Oxea, ISU Chemical, Sanofi, Royal Dutch Shell, LG Chem and ...
(Date:7/30/2015)... July 30, 2015   Senomyx , Inc. (NASDAQ: ... science technologies to discover, develop, and commercialize novel flavor ... today reported financial results for the second quarter 2015. ... 2015, we remain on track to achieve our commercial ... Executive Officer of the Company. "Since our last quarterly ...
(Date:7/30/2015)... , July 30, 2015  Discovery Laboratories, ... it has received the second $1.0M tranche under ... Research (SBIR) grant valued at up to $3.0 ... aerosolized KL4 surfactant as a potential medical countermeasure ...  Discovery Labs was awarded an initial $1.0 million ...
(Date:7/29/2015)... Sanofi, un leader mondial ... pour le premier semestre 2015. Le Directeur Général ... Visionner l,interview vidéo et lire la transcription ... Au sommaire de l,interview :  - ... - Diabète - Praluent ...
Breaking Biology Technology:Global Propanol Market Technical Data and Manufacturing Analysis 2020 2Global Propanol Market Technical Data and Manufacturing Analysis 2020 3SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 2SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 3SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 4SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 5SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 6SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 7SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 8SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 9Discovery Labs Receives $1.0 million under an SBIR Grant in Continuing Support of the Development of Aerosolized KL4 Surfactant to Address Radiation-Induced Lung Injury 2Discovery Labs Receives $1.0 million under an SBIR Grant in Continuing Support of the Development of Aerosolized KL4 Surfactant to Address Radiation-Induced Lung Injury 3
... modern world, largely due to properties that render the ... One of their most useful qualities, however - the ... stress - is also one of the most puzzling., ... to change shape to absorb energy rather than breaking ...
... November 27 Arpida,announced today that it is refocusing all ... says this is to be seen as a,consequence of the ... board on 20 November 2008 regarding the,approval of Iclaprim in ... the context of the FDA advisory board,s recommendation the Arpida,board ...
... market and business intelligence company, the biofuel market is estimated at ... of approximately 85% bioethanol and 15% biodiesel. Bioethanol is produced and ... Europe is the world leader in biodiesel production and this fuel ... ...
Cached Biology Technology:Fast molecular rearrangements hold key to plastic’s toughness 2Fast molecular rearrangements hold key to plastic’s toughness 3Arpida to Restructure and Focus on Key Projects 2CBDM.T, the Market and Business Intelligence Company Reviews the Biofuel Market 2CBDM.T, the Market and Business Intelligence Company Reviews the Biofuel Market 3CBDM.T, the Market and Business Intelligence Company Reviews the Biofuel Market 4
Phospho-TAO2 (S181) Affinity Purified Polyclonal Ab Protein Family: Other Intracellular Kinases...
PEG 8000, Molecular Biology Grade...
... (HDAC) Antibody Sampler Kit Kit Includes: ... #2062, 40 ul Histone Deacetylase 3 (HDAC3) ... 4 (HDAC4) Antibody, Catalog #2072, 40 ul ... 40 ul Histone Deacetylase 6 (HDAC6) Antibody, ...
Immunogen: Synthetic Peptide: C N(185) D G T E F G G S I Y Q K(197) Storage: -20 C, Avoid Freeze/Thaw Cycles...
Biology Products: