Climate Change and Sex.....

Joined
May 5, 2007
Messages
5
New Scientist

Several recent studies have drawn a link between sex, climate change and environmental pollution. Here's a round-up of these and a few more.

Polar bear penis bones are shrinking in Eastern Greenland, according to Christian Sonne of the University of Aarhus in Denmark and colleagues. They found that polar bears living in the Eastern Greenland are somewhat less well endowed than their cousins in Svalbard and the Canadian Arctic. They say this could be due to the high prevalence of pollutants such as PCBs and DDT in Eastern Greenland - pollutants which records show are less prevalent in Svalbard and the Canadian Arctic.

In 2004, Steven Fergusson of the University of Manitoba in Canada showed that carnivores living in snowy environments, close to the poles, tend to have longer penis bones to help them be more competitive.

So Sonne's group concludes that human pollution, combined with the difficulty of finding food in warming climates, may spell disaster for Eastern Greenland polar bears.

Male birds rule the roost

By and large there are one third more male birds out there than females, according to a new study by Paul Donald of the UK Royal Society for the Protection of Birds. This is despite the fact that as many hatchlings of each sex born. So the researchers conclude that unlike humans, female birds must have shorter life expectancies than males.

The finding is bad news for conservation efforts, which often estimate the size of populations by counting the number of males - it seems threatened birds might be even more thin on the ground than previously thought. Strikingly, the researchers also found that the sex ratio was even greater in threatened species.

Turtles go the distance

Female loggerhead turtles in Florida, US, increasingly rely on long-distance relationships with males in North Carolina, according to research our of the University of Exeter in the UK. That's because the sex of the loggerhead hatchlings is determined by the temperature at which the egg is incubated: warmer temperatures yield females, cooler ones yield males. So warming temperatures in the US mean that southern populations of loggerheads are increasingly dominated by females.

Bearded dragon sex switched by heat

Similarly, the sex Australian central bearded dragons can be "switched" by heat. A team of researchers led by Alex Quinn at Canberra University in Australia recently incubated eggs at relatively high temperatures – between 34°C and 37°C and found that the majority of embryos that had ZZ sex chromosomes (genetically male), went on to hatch as females. The team is worried that the lizards may not be able to adapt fast enough to warming temperatures, leading to males being wiped-out altogether.

Penguins and post-El Niño stress disorder

It seems that Galápagos penguin may suffer from post-El Niño stress disorder. After the strong El Niño events of 1982–83 and 1997–98 populations declined by more than 60%., according to F. Hernán Vargas of the University of Oxford and colleagues. They also looked at what this means for the future of the species and found a 30% chance it will disappear entirely within 100 years, if El Niño events keep happening with the same frequency. If, however, the frequency increases, as predicted by some climatologists, the risk becomes greater. A doubling of the strong events leads to an 80% of extinction within 100 years.
 


Joined
May 5, 2007
Messages
5
none.
 

Binx

Member
Joined
Nov 29, 2006
Messages
34
I cannot believe the CC debate has come down to this level. Maybe Polar Bears are evolving. Soon enough they'll be able to wallk and talk, lead the PD's and out all you CC alarmists for the nutters that you are by explaining that the world has been going through cycles of climate change long before us egotistical humans ever knew what a climate was. : D
 

sackville

Member
Joined
May 4, 2005
Messages
85
Barra Roantree said:
New Scientist

Several recent studies have drawn a link between sex, climate change and environmental pollution. Here's a round-up of these and a few more.

Polar bear penis bones are shrinking in Eastern Greenland, according to Christian Sonne of the University of Aarhus in Denmark and colleagues. They found that polar bears living in the Eastern Greenland are somewhat less well endowed than their cousins in Svalbard and the Canadian Arctic. They say this could be due to the high prevalence of pollutants such as PCBs and DDT in Eastern Greenland - pollutants which records show are less prevalent in Svalbard and the Canadian Arctic.

In 2004, Steven Fergusson of the University of Manitoba in Canada showed that carnivores living in snowy environments, close to the poles, tend to have longer penis bones to help them be more competitive.

So Sonne's group concludes that human pollution, combined with the difficulty of finding food in warming climates, may spell disaster for Eastern Greenland polar bears.
a report about the impact of pollutants on specific species has the CC dogma grafted onto it. wonder if it hadn't, might it not have otherwise got published? :|
 

Earthling

Well-known member
Joined
Aug 14, 2012
Messages
7,750
Polar bear penis bones are shrinking in Eastern Greenland, according to Christian Sonne of the University of Aarhus in Denmark and colleagues.
I'm surprised that this story never made it to the Warmlist:
A complete list of things caused by global warming
warmlist
 

slippy wicket

Well-known member
Joined
Mar 10, 2010
Messages
4,492
Never has such a thread title flattered to deceive. :(
 

stopdoingstuff

Well-known member
Joined
Feb 26, 2011
Messages
22,394
I tried carbon-neutral dogging for a while, but its just not the same on a bike as it is in a car.
 

Pat Gill

Well-known member
Joined
Jun 16, 2011
Messages
5,300
Website
www.energyco-ops.ie
Twitter
Pat_Gill
I tried carbon-neutral dogging for a while, but its just not the same on a bike as it is in a car.
mmm I can see where you went wrong, swap the bike for a Tesla model S and your dogging problem is sorted and with a range of 300 miles and a great top speed a fast getaway is well within your grasp.

 

Earthling

Well-known member
Joined
Aug 14, 2012
Messages
7,750

Earthling

Well-known member
Joined
Aug 14, 2012
Messages
7,750

Earthling

Well-known member
Joined
Aug 14, 2012
Messages
7,750

Monday Monday

Well-known member
Joined
Feb 9, 2009
Messages
1,331
I've been using "well it's a bit cold" as an excuse for years now.

Are you telling me I have a back-up excuse for the summer as well.

God bless you Global Warming.
 


New Threads

Popular Threads

Most Replies

Top