Ontario’s turtles are all considered semi-aquatic, which means that they spend time in the water but also spend time travelling on land. Some-like the Wood Turtle – spend significant amounts of time away from and out of the water. Others, like the Spiny Softshell, like to stay very close to water at all times.
Both male and female Ontario turtles travel on land during the spring, summer and fall seasons . In fact, at OTCC, we annually see the same number of males as females, admitted to the hospital Turtles wander overland to search for mates, establish new territories, or to move between wetland complexes and other aquatic habitats. They also all lay their eggs on land, and often this is quite a distance from water.
Southern Ontario is THE place for turtles in Canada, having the highest density and largest species variety for all the country. Unfortunately, Southern Ontario also has the highest density of roads, and you cannot travel more than 1-2 kilometers anywhere in this region without running into a road.
This means that Ontario’s turtles are at risk of injury and death on roads across the province, In fact, this is second only to habitat loss as a cause for their population declines.
At the Ontario Turtle Conservation Centre, the majority of the admissions to our hospital (Kawartha Turtle Trauma Centre) originate from road injuries. We have admitted all of Ontario’s species of turtles to our hospital, however the species that we admit the most frequently are Snapping Turtles, Painted Turtles, Blanding’s Turtles, Map Turtles, and Musk Turtles. Wood Turtles and Spotted Turtles are also seen, but are considered endangered in Ontario, so their numbers are low.
Admissions to OTCC for the past 5 years (above)
Road density in Southern Ontario, with OTCC admission density overlaid (above)
Every year, OTCC admits the same number of male as female turtles. (‘unknown’ refers to hatchlings or juveniles, whose sex cannot be determined)
Many animals are hurt or killed every day on roadsides. But the life history of turtles is unique in that the death of even a small number of adult turtles can have a large negative impact on the entire population. The rehabilitation of Ontario turtles is far more than the compassionate gesture of a caring community. This is a veritable conservation program, helping to reverse the impact of roads on turtle populations.
To understand why treatment of injured turtles can actually contribute to species recovery, we need to delve into their biology and reproduction to understand traits that are vastly different from other classes of animals. Their biology greatly differs from other species of wildlife, that have a much higher ability to replace themselves in the population over a shorter time. Other species mature quicker and have higher survival of young.
- Turtles are a long-lived species- Snapping turtles may in fact have a lifespan of over 100 years.
- The vast majority of hatchlings and juveniles do not survive.
- Turtles do not reach maturity until they are 8-20 years old.
- Turtles are capable of reproducing throughout their lifespan once they have reached maturity, and actually become MORE prolific as they get older!
- In the natural state, adult turtles have an extremely LOW mortality rate- only 1% per year. In a healthy population 99% of adult turtles survive each year! This extremely low adult mortality is essential to keeping the population healthy, as so few make it to maturity. It can take a snapping turtle 59 years to even have a chance of replacing themselves in the population!
- Turtles do not compensate for an increase in the mortality rate by producing more eggs per year
- Very small increases in the mortality rate, such as being killed on roads, can lead to the decline and eventual extinction of the population
Comparison of reproductive potential among game species in Ontario
Taken from The Snapping Turtle Report; Suzuki Foundation, Ontario Nature and Kawartha Turtle Trauma Centre, 2013
What does all this mean? This means that every adult turtle saved is important for that population. And that the early death of an adult turtle has a much greater impact on the population than the death of a hatchling or juvenile. .. Because so few turtles ever reach sexual maturity, each adult turtle is part of an elite group destined to live and breed for many years in order to perpetuate the species. Removing an adult turtle has a negative impact on the population – and saving a turtle has a beneficial impact on the population as a whole.
At OTCC, the hospital remains the ‘hub’ of our conservation initiatives. Since many of the female turtles admitted are carrying eggs, we also ensure that none of these eggs are lost. We collect, incubate, hatch and release these babies, back to the mother’s wetland. In 2017 alone, we incubated over 3600 eggs! While most of these would not have survived in the wild, we can increase their survival by hatching them at the centre, and by releasing many of them at a larger size, to increase survival even more.
Our field work is following a group of these ‘headstarted’ Blanding’s turtles, to ensure we maximize their survival, and increase their chance of going on to add to the adult population. This is a long-term study, going into the seventh year.
While the hospital helps to reverse the impact of roads on turtles, the ideal goal is to actually PREVENT them being injured or killed, in the first place. This requires:
- Education – We reach many thousands of people each year through our education and outreach program. Teaching the public about the plight of our turtles, will help to the protect them in the future. Our programs teach all aspects of turtle conservation, and individual stewardship practices, including how to avoid them on the roads, which roads to watch out for, and how to move them off the road. If only one in ten people then save only one turtle, this still equates to thousands more turtles saved!
- Ecopassages – ecopassages are structures which allow wildlife to cross roads without going ON the road. For turtles, this usually involves using an under-road culvert to provide safe passage. Special fencing set up on either side of the culvert, guide the turtle into the culvert and allows them to cross. These are becoming more and more common and hopefully will become standard installations. The MTO is working alongside communities and individuals across the province, to implement these.
While road signage helps alert drivers, only the ecopassages seem to prevent mortalities significantly.
Turtle Nest Protection
Our Ontario turtles are semi-aquatic; while they spend a lot of time in the water, they also travel on land a lot too. They will be on the move any time from April to October, although the busiest time for them is May and June. Females travel the most in June, as this is their most important time for laying eggs. To learn more about turtle nests and nest protection, click here. Turtle Nests and Nest Protection