Navigation Links
Family ties bind desert lizards in social groups
Date:10/6/2010

SANTA CRUZ, CA-- Researchers at the University of California, Santa Cruz, have found that a species of lizard in the Mojave Desert lives in family groups and shows patterns of social behavior more commonly associated with mammals and birds. Their investigation of the formation and stability of family groups in desert night lizards (Xantusia vigilis) provides new insights into the evolution of cooperative behavior.

The researchers reported the results of a five-year study of desert night lizards in a paper published in the Proceedings of the Royal Society B: Biological Sciences (published October 6 online in advance of print).

Alison Davis, who led the study as a graduate student at UC Santa Cruz and is currently a postdoctoral researcher at UC Berkeley, said one of the unusual characteristics of desert night lizards is that they are viviparous, giving birth to live young instead of laying eggs. What really got her attention, however, was that both young and old lizards could be found huddling together every winter beneath fallen Joshua trees and other desert plant debris.

"This is remarkable, given the fact that in most species of lizards, individuals actively avoid each other," Davis said.

By conducting extensive genetic analyses of these winter social groups, the researchers found that young desert night lizards stay with their mother, father, and siblings for several years after birth. Some groups aggregated under the same fallen log year after year, forming what the researchers termed dynasties.

According to Davis, about 20 lizard species are thought to form family groups, and only two of those lay eggs. Viviparity (live birth) is crucial for the evolution of cooperative behaviors, she said.

"Viviparity provides the opportunity for prolonged interaction between the mother and offspring, which predisposes the animal to form a family group," Davis said. "The importance of parent-offspring interacti
'/>"/>

Contact: Tim Stephens
stephens@ucsc.edu
831-459-2495
University of California - Santa Cruz
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Queens University Belfast researchers trace octopuses family tree
2. Children distressed by family fighting have higher stress hormones
3. Planetary "first family" discovered by astronomers using Gemini and Keck Observatories
4. Planetary first family discovered by astronomers using Gemini and Keck Observatories
5. Making the ultimate family sacrifice
6. Microscopic morphology adds to the scorpion family tree
7. Mayo Clinic researchers suspect a novel gene is causing restless legs syndrome in a large family
8. Regular family meals result in better eating habits for adolescents
9. Early family ties: No sponge in the human family tree
10. Rotator cuff tears: Are they all in the family?
11. Late motherhood boosts family lifespan
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/25/2014)... scientists from 25 countries and 35 states will ... the Genetics Society of America (GSA) next week ... conference will feature close to 500 presentations (including ... including gene expression and regulation, functional genomics, chemical ... and a variety of diseases. , Of ...
(Date:7/25/2014)... pleiotropic factor characterized by the existence of numerous ... confer to the protein deeply different characteristics. NRG1 ... occurring during development and the different phases occurring ... axon regrowth, remyelination and target reinnervation, Researchers at ... the soluble NRG1 upregulation observed in Schwann cells ...
(Date:7/25/2014)... KANSAS CITY, MOResearchers at the Stowers Institute for ... classes of pheromone receptors, and found pheromones crucial to ... one class of receptors helps a male mouse detect ... other class of receptors lets him know if the ... sets of pheromones are critical to trigger mating. Stowers, ...
Breaking Biology News(10 mins):Yeast meeting to showcase latest breakthroughs in genetics and molecular biology 2It takes two to court 2It takes two to court 3
... loss of dopamine neurons is a hallmark of many ... Stem cell biology and regenerative medicine offer novel therapies ... the online open-access journal PLoS Biology Dr. Raja Kittappa, ... McKay show that the transcription factor FOXA2 plays a ...
... invasive plant species is complex, to say the least. ... create conditions that promote population explosions of invasive plants, ... to the ecosystems they inhabit. On the other, fire ... growth. A new general technical report published by ...
... New microscopic pictures show the first-ever physical evidence ... (CF) disease. Researchers at the University of Alabama ... protein called epithelial sodium channel, or ENaC. Both proteins ... exactly what role each plays is unclear. ...
Cached Biology News:Cystic fibrosis proteins photographed interacting 2
(Date:7/24/2014)... , July 24, 2014  Asterias Biotherapeutics, Inc. ... emerging field of regenerative medicine, announced today that ... presentation to investors on Tuesday, July 29, 2014, ... presentation will include an overview of Asterias, business ... webcast, visit http://www.ustream.tv/channel/asterias-biotherapeutics at least 15 ...
(Date:7/24/2014)... Yet, scientists are making progress in devising suitable ... approach relies on quantum dotsa kind of artificial ... A new study demonstrates that changing the coupling ... electrical impulses can help better control them. This ... as quantum information units, which would produce faster ...
(Date:7/24/2014)... Research and Markets has announced ... Analytical Instruments Market 2014-2018" report to their offering. ... Genomics is the study of the gene and its ... and functions of proteomes or sets of proteins by ... involves the mapping of genes and DNA sequencing to ...
(Date:7/24/2014)... July 24, 2014 Three companies from ... in Livestrong’s Big C Competition. Out of 700 competition ... headed to the semi-final round. In this round twenty ... accelerator program, complete with mentoring from thought-leaders and medical ... part of the angelMD commitment to the Livestrong vision ...
Breaking Biology Technology:Asterias Biotherapeutics Announces Live Investor Webcast 2Asterias Biotherapeutics Announces Live Investor Webcast 3Asterias Biotherapeutics Announces Live Investor Webcast 4Global Genomics and Proteomics Analytical Instruments Market 2014-2018: Key Vendors are Agilent, Bio-Rad , F. Hoffmann, La Roche, Illumina, PerkinElmer and Thermo Fisher Scientific 23 angelMD Startups Make Livestrong Big C Semi-finals 2
... Potential Future Application of Stem Cells as a ... Treatment for Diabetes ... Nature Biotechnology, SAN DIEGO, Feb. 20 Novocell, Inc., a stem cell,engineering ... cells can be turned into pancreatic cells,capable of producing insulin in mice. The ...
... PPD, Inc. (Nasdaq:,PPDI) today announced its plans to begin ... common stock may be purchased from time to time,in the ... a share repurchase program in,view of the current price at ... balance sheet and its ability to generate cash,as well as ...
... Rotarix Would be the Only Vaccine Indicated to Prevent, ... Circulating Types, Offering, Completion of the Vaccination by ... GAITHERSBURG, Md. and PHILADELPHIA, Feb. 20 ,GlaxoSmithKline (NYSE: ... Drug,Administration,s (FDA) Vaccines and Related Biological Products Advisory,Committee (VRBPAC) ...
Cached Biology Technology:Novocell Reports Successful Use of Stem Cells to Generate Insulin in Mice 2Novocell Reports Successful Use of Stem Cells to Generate Insulin in Mice 3PPD Announces Plan to Repurchase Shares of its Common Stock 2GSK Receives Favorable Recommendation by FDA Advisory Committee for Rotarix(R) (Rotavirus Vaccine, Live, Oral) 2GSK Receives Favorable Recommendation by FDA Advisory Committee for Rotarix(R) (Rotavirus Vaccine, Live, Oral) 3GSK Receives Favorable Recommendation by FDA Advisory Committee for Rotarix(R) (Rotavirus Vaccine, Live, Oral) 4
Handy 100V Power Supply is Low-cost, compact and lightweight. Easy to operate - either 50 or 100 VDC is selectable as the output voltage. These voltages are sufficient for ordinary electrophoresis....
Coating : Poly-D-Lysine ,Surface : ECM/attachment factors ,Surface area : 9.6 cm2 ,Dim nominal : 35 mm x 10 mm ,Vol working : 2.5-3.0 ml ...
...
BD BioCoat Collagen IV 35 mm Culture Dishes, tissue-culture treated polystyrene with a uniform application of mouse collagen type IV....
Biology Products: