In this screengrab from a YouTube video, a turtle approaches the larger of two model turtles on the right. (Gregory Bulte via The Canadian Press)

‘Sex dolls’ help biologist study turtle mating habits

3D-printed ‘sex dolls’ help Carleton biologist find out what turtles find attractive in a female

Using 3D-printed “sex dolls” a Carleton University researcher has answered a question biologists had been asking for years — what do northern map turtles find attractive in a female.

Biologist Gregory Bulte says he’s been studying the mating habits of the northern map turtle for about 15 years, but the turtles are skittish and hard to observe because they mate on the bottom of lakes.

RELATED: Sex robots could help your marriage

He says the females can grow to twice the length of males and he wondered whether males might be attracted to larger females.

Bulte says he and his colleagues printed two 3D printed “sex dolls” of female turtles, identical in every aspect except size, and placed them a metre apart on the lake bed, with cameras rigged up to record how wild males reacted.

As predicted, Bulte says the males attempted to mate with the large model more often than the smaller one.

He says that by selecting larger females, males would increase the fitness of their offspring because larger females produce larger hatchlings and he plans to continue his research using the models.

“For these turtles it would be very difficult to have somebody just sitting there taking notes underwater without scaring them away,” he said Wednesday.

RELATED: The coming disruption: How robots might upend different professions

Bulte said the models could also allow scientists to look at other traits involved in the turtles’ mating behaviour.

“We could look at colour … the markings, we could do that across seasons to see if it changes,” he said.

The northern map turtle is listed as a species at risk in Canada and is found in lakes and rivers in the corridor between Montreal and Windsor, Ont., Bulte said.

Bulte also said he’s going to need some help going through the data he has collected.

“Now I’m just hoping to find a really good student that is willing to watch a lot of turtle videos,” he said.

The Canadian Press

Just Posted

B.C. students send books to displaced students of Hornby Island school fire

Maple Ridge elementary school teacher says students learned about acts of kindness

North Island Tour De Rock rider Benjamin Leah leads team to Port Hardy

“You don’t have issues and problems when you look at these kids and how much they’re going through.”

Denman Island awash with plastic debris

After 14 years of Community Beach Cleanups, the little Gulf Island of… Continue reading

Supports service tax helping homeless in Courtenay

Latest count indicates greater number of homeless seniors

Associate pastor made early connections in Courtenay

Central Evangelical Free Church opens at former Record office

Environment Canada confirms Ottawa area hit by two tornadoes Friday

At one point more than 200,000 hydro customers were blacked out

Whitecaps see playoff dreams fade after 2-1 loss to FC Dallas

Goal in 87th minute seals Vancouver’s fate

Trump drains oxygen from Trudeau foreign policy with PM, Freeland bound for UN

A lot has changed since the Liberals came to power in Canada in 2015

B.C. man fined $15,000, barred from trading securities for fraud

Larry Keith Davis used money from an investor to pay personal bills

Emergency crews investigate small sulphuric acid spill in Kootenays

IRM states a small volume of less than one cup and three dime-sized drips were leaked from carrier

Family, friends of B.C murder victim want killer sent back to max security facility

Group wants convicted murderer Walter Ramsay sent back to a maximum security facility

B.C. VIEWS: Looking under the hood of ICBC’s war on crashes

Is our accident rate really soaring, or is it inefficiency?

Most Read