Adventure Ausrama Blog

The sex of central bearded dragon hatchlings is determined by the prevailing temperature during incubation. Some females carry male genes and behave like males. They are more confident and active than other females. The "tomboys" also have more offspring. Australian central bearded dragon Of great interest is how genetic and climatic factors affect gender. In lab test incubation, if the temperature was over 32 degrees females with male chromosomes hatched as females. Below 32 degrees the dragon expressed its genetic disposition and hatched as males. High temperature females were larger than males which is normal for the species. It appears that male type behaviors of these females is genetically determined. Some of the females were even bolder than normal males. Male chromosomes affect the brain which is driven to express male traits. Only one other animal has the feature of environmental and genetic factors determining sex - the skink. Other animal...

While new animals are regularly identified, all species of seadragons were thought to be known. Indeed, it has been 150 years since all were classified. A surprise was on hand for Scripps Institution of Oceanography and the Western Australia Museum. A new type of seadragon was found off the WA coast. A sample had been in a lab untested since 2007. The latest DNA testing system enables new kinds of creatures to be singled out. Named Phyllopteryx dewysea , the new seadragon is bright red in color. This is an ideal color for camouflage in deep water. No one expected a new type, so it remained undetected until the new technique made 5,000 X-ray slices of the sample. The Ruby Seadragon has a distinct skeletal structure. It increases the number of known seadragon species by 50 per cent, because there were only two other kinds of this mysterious animal previously. ✴ Technology by Ty Buchanan ✴ http://www.adventure--australia.blogspot.com/ http://www.tysaustralia.blogsp...