If I am not mistaken, you will have to report the loss of your passport containing the Canada TRV to the following:
Canadian Police
Indian High Commission: So that they can issue a temporary travel document after they verify facts
CIC: Regarding your Canada TRV
Indian Police (in the city/town where you live in India): Your passport is the property of the Government Of India.
And I think, you need to place an advertisement in a newspaper, too, to report the loss before another full-fledged Indian passport can be issued to you - but that's if you are in India. Not sure how it works in Canada. Best is if you also speak with the Indian High Commission in Canada
Also, do you have any other valid visas in your passport?
Hope this helps