VIDEO: Canadian zoos’ captive breeding programs help preserve endangered species

Programs considered last-ditch effort to prevent local extinctions of turtles, butterflies and more

The turtle in my hand dangles its churning feet as I set it down. It touches its first dirt and immediately, unerringly, points toward shore and races as fast as a turtle can to the water.

This turtle — a western painted turtle — has never been here before. It’s never been anywhere other than in an aquarium or a plastic tub full of others.

It’s being returned to an undisclosed pond near Langley, B.C., as part of captive breeding at the Greater Vancouver Zoo to help save an endangered native population. The program is one of a growing number across Canada – last-ditch efforts to stave off local extinctions of everything from butterflies to caribou.

“It works and it’s a pretty important tool,” said Lance Woolaver, director of Wildlife Preservation Canada, which advocates for and assists such work. “It’s definitely something we’ll be doing more and more.”

Some fear captive breeding programs can become sops to a public concerned about species loss but not concerned enough to change how it acts.

“The misuse is that we will just seize upon these artificial ways to prop up a population and not address the habitat degradation that’s let the species become endangered in the first place,” said Carolyn Campbell of the Alberta Wilderness Association.

Captive breeding programs vary widely. Some release young born to captive animals. Some collect eggs from the wild and return the hatchlings. Some, such as those currently under consideration for caribou, protect pregnant females until they give birth.

In Vancouver, turtle eggs are gleaned from the wild and hatched under glass.

“We watch the females come up on land and we can dig up their nests,” said Maja Hampson, who runs the program.

“Sometimes we get nothing. Other times we get six or seven nests, which is probably close to 100 eggs.”

The eggs hatch in incubators. Warmer thermostats tend to produce females; cooler ones, males. In about two months, tiny turtles about the size of quarters are chipping free.

The unique pattern of colours on their bellies is recorded. Microchips are inserted. After about a year splashing about with clutchmates in a big plastic tub, the palm-sized turtles are released.

And the challenges begin.

READ MORE: Bear will not be euthanized after biting toddler at Greater Vancouver Zoo

There are predatory and invasive bullfrogs. Red-eared sliders, a turtle sold at pet shops, push the native species off sunny logs where they digest their food. Western painteds also have an unfortunate liking for areas humans use — boat launches, beaches, parking lots.

Still, the team estimates about 75 per cent of the turtles survive. It’s too early to know if they’re becoming self-sustaining — turtles take seven years to begin reproducing and the program has only been going since 2012.

“What we’re trying to do is establish new breeding populations in those habitats that are already there,” Hampson said.

“One of the tricky things is waiting for them to get to that age where they are nesting. A lot of them are still too young for that.”

The Vancouver Zoo’s turtle program is one of many involving dozens of species. The Calgary Zoo is involved with some form of captive breeding for at least six different animals.

Woolaver said there are probably about a dozen institutions with “really serious” programs — mostly with insects, birds, lizards and amphibians, although efforts for mammals such as the swift fox have had success.

Bob Weber, The Canadian Press

Like us on Facebook and follow us on Twitter

Just Posted

Live music and harm reduction scheduled for Welcome Week

Pender Street Steppers will be playing Traverse on Nov. 28

Revelstokians trying to make a difference with Mindful Mondays

Locals invite you to make changes to reduce your carbon footprint starting one day a week

Revelstoke and District Humane Society raises $4,200

The community came out for their annual photos with Santa event

Keep that ‘friendly small town’ feel in Revelstoke this Welcome Week

Make friends with your new neighbours at one of many fun events Nov. 23-30

Bye bye Bei Bei: Giant panda born in U.S. zoo heads to China

Panda heads back to China as part of cooperative breeding program

B.C. to advocate for frustrated, confused, unhappy cellphone users, says premier

Maple Ridge New Democrat Bob D’Eith to advocate for more affordable and transparent cellphone options

WATCH: Coldstream garage fire as hot as 275 C: deputy fire Chief

Shop fire potential for ‘one heck of a fireworks show,’ O’Hara says

North Okanagan women head up college board

Gloria Morgan named chair and Juliette Cunningham vice-chair Tuesday

Artist waves women’s flag in Okanagan

SheShe declares femininity with all-encompassing exhibit

B.C. man who killed Belgian tourist near Boston Bar gets life in prison, no parole until 2042

Sean McKenzie pleaded guilty to second-degree murder of 28-year-old Amelie Christelle Sakkalis

‘Very disrespectful’: B.C. first responder irked by motorists recording collisions on cellphones

Central Cariboo Search and Rescue deputy chief challenges motorists to break the habit

Man accused in fatal Salmon Arm church shooting also charged with arson

Parmenter family home badly damaged by fire a month before killing

Most Read