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

North Cowichan and the City of Duncan receive awards for financial work

Awards recognize excellence in financial reporting

Cowichan Valley High School Bowling Program high scores

Briana Wright reigns in ladies’ scoring

Cowichan Red Arrow wins first crossover match

Run continues for Cowichan’s Div. 4 soccer team

Will Arnold spearheads drive to clean up Duncan neighbourhood

Will Arnold offers a grim assessment of the community he has fallen… Continue reading

VIDEO: Lake Cowichan minor hockey Lakers of all ages shine at big Jamboree Day

With a Skills Competition and a full slate of games, there was fun for everyone on Jamboree Day

Coming up in Cowichan: Anti-pipeline meeting; women’s shelter open house

Public meeting in Duncan to support pipeline protests A public meeting has… Continue reading

LETTER: Seniors home care, day programs expanding, Adrian Dix says

B.C. health minister responds to latest Seniors Advocate report

B.C. woman wins Instagram celebrity’s boob job contest

‘Kirill was here’ held a contest for women to win a boob job and a trip to Miami

Man pulls over to help injured owl, gets hit by SUV

Chase RCMP say owl flew away while they were on scene

New food guide addresses ‘elephant’ in the room – alcohol

Experts welcomed the tougher stance on an issue they say demands a co-ordinated strategy

Cannabis sales up 25% in November as overall retail sales fall 0.9%

Cannabis store sales totalled $54 million in the first full month of legal recreational pot sales

LNG Canada support far outweighs protests, CEO says

Andy Calitz vows completion on schedule at B.C. Natural Resource Forum

Most Read