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

54-40 headlines Aldergrove Fair Days

Free concerts series at 106th annual Fair Days, July 20-22

Barclay Parneta new Giants GM

Becomes third General Manager in the history of the franchise

Langley businessman pickets bank

HEMPYZ owner Randy Caine says a TD manager had doubts about the nature of his business

Strong showing by Langley Olympians Swim Club (LOSC) at Hyack

Club sent 25 swimmers to competed with over 400 swimmers from 18 B.C. teams.

ON STAGE: Time to clean up, company is coming

A Langley theatre group is once again hosting the regional community theatre competitions this week.

VIDEO: Langley music school’s quartet wraps up season with show at home

The Rose Gellert String Quartet performs Sunday in the Cafe Classico season finale.

5 to start your day

Mounties cleared in shooting man with toy gun, woman sexually assaulted in Surrey and more

PNE’s Summer Night Concerts by Village People, Lauper, Goo Goo Dolls, more

Mostly retro sounds at this year’s fair in Vancouver, starting Aug. 18

Notley to skip western premiers meeting today, but slams leader who’s there

Notley told reporters that B.C. Premier John Horgan is trying to shut down the Trans Mountain pipeline

No suitors emerge for pipeline project stake as Kinder Morgan deadline looms

Analysts and observers remain perplexed by Finance Minister Bill Morneau’s comment last week that “plenty of investors would be interested in taking on this project”.

Energy wells plugged as Hawaii’s volcano sends lava nearby

A spike in gas levels could prompt a mass evacuation in Hawaii

Trump seethes over Russia probe, calls for end to ‘SPYGATE’

“SPYGATE could be one of the biggest political scandals in history!” Trump said on Twitter

Grads receive BC Transit passes

BC Transit provides passes to graduating students in more than 50 communities

Philip Roth, fearless and celebrated author, dies at 85

Literary agent Andrew Wylie said Roth died Tuesday night of congestive heart failure.

Most Read