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

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Morning Start: The Exorcist film set was haunted

Your morning start for Tuesday, Aug. 11, 2020

Documentary on Kelowna brothers’ Central American surf resort business releases

Lucas and Travis Boychuk moved to Nicaragua in 2008, starting their surf resort business

Historic Oliver Museum renovated to better serve community

The 96-year-old building previously faced challenges with heating, cooling and wood degradation

City of Penticton developing plan to improve access to child care

Parents, guardians, care providers asked to provide input

Former Summerlander receives Emmy nomination for makeup work

Lucky Bromhead recognized for her work with Canadian sitcom Schitt’s Creek

B.C. records 30-50 new COVID-19 cases a day over weekend, no new deaths

Many of those testing positive were identified by contact tracing for being linked to other confirmed infections

Over half of Americans oppose Trump tariff on Canadian aluminum: survey

The survey was conducted Aug. 7 to 9 among 1,513 Canadians and 1,003 Americans

Oh baby, what a birthday gift: $2.8M raised to help B.C. boy with rare disease

‘We are very thankful to everybody,’ Aryan Deol’s father says

‘Huckleberry’ the bear killed after B.C. residents admit to leaving garbage out for videos

North Shore Black Bear Society said it was local residents who created a ‘death sentence’ for bear

Police investigating after insults, expletives yelled at federal minister’s staff

A 90-second video circulating on social media appears to have been shot by the person who was yelling

Lost dog reunited with family 3 months after going missing on remote B.C. trail

‘The poor thing was skin and bones,’ says one of its Vancouver Island rescuers

5 B.C. First Nations call out Canada for ‘discriminatory’ food fish practices

West Coast nations say government ignoring court-won right to chinook and coho

No new COVID-19 cases in Kelowna over the weekend

Kelowna has nine of the Interior Health region’s 13 active cases

B.C. marine ecologist wants Canada to sink its teeth into shark protection

Gulf Islands scientist says top predator under shocking threat from human behaviour

Most Read