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Ecology & Evolutionary Biology

Ecology & Evolutionary Biology

A scientific illustration of Ovatiovermis cribratus

500 million-year-old species offers insights into the lives of ancient legged worms

January 31, 2017

A new species of lobopodian, a worm-like animal with soft legs from the Cambrian period (541 to 485 million years ago), has been described for the first time from fossils found in the Burgess Shale in the Canadian Rocky Mountains.

Photos of the six creatures discovered by A&amp;S researchers

A&S researchers discover new creatures great and small

January 18, 2017

From a deep-sea creature that predates dinosaurs by 250 million years to a chameleon-like lizard in the Dominican Republic, meet six new species — some living and some extinct — that have been discovered by A&S scientists over the last five years.

This illustration shows the hyolith Haplophrentis extending the tentacles of its feeding organ (lophophore) from between its shells.

Paleontologists classify mysterious ancient cone-shaped sea creatures

January 11, 2017

One branch on the tree of life is a bit more crowded today. A team of scientists led by 20-year-old University of Toronto undergraduate student Joseph Moysiuk has finally determined what a bizarre group of extinct cone-shaped animals actually are.

5 national parks you should visit this year: U of T expert suggests his picks

January 06, 2017

There has never been a better time to visit Canada’s national parks, says U of T’s Don Jackson.

Stephen Wright observing small green plants.

U of T's Stephen Wright takes the Steacie Prize

December 14, 2016

Evolutionary biologist and world-renowned plant genomicist Stephen Wright of the University of Toronto has capped a remarkable year by winning the prestigious Steacie Prize.

Matthew Tulio, Clara Thaysen, Monina Cepeda, and Chelsea Rochman

Seeing the North Pacific 'garbage patch' transformative for new U of T ecologist

October 07, 2016

One of the most memorable and defining moments in Chelsea Rochman’s career occurred during her first research expedition to see what has been referred to as the “garbage patch” in the North Pacific Ocean.

Professor Asher Cutter smiling in a lab.

Worms evolve giant sperm for a reproductive advantage

September 22, 2016

Some worms have taken the notion that “bigger is better” to extremes by evolving giant sperm cells that are up to a quarter the size of their own bodies, a study led by a University of Toronto scientist and researchers in France has discovered.

Massive open database answers questions on human cultures

July 26, 2016

Wondering if monogamy was more popular than polygamy in the 19^th and 20^thcenturies? Curious to know which societies are linked to a common ancestor on a language tree? Well, a University of Toronto researcher and her colleagues have “D-PLACE” for you.

A juvenile chum salmon infested with sea louse parasites.

"Perfect storm" brought sea louse epidemic to BC salmon

July 18, 2016

High ocean temperatures and poor timing of parasite management likely led to an epidemic of sea lice in 2015 throughout salmon farms in British Columbia’s Queen Charlotte Strait, a University of Toronto-led study has found.

Illustration showing Oesia inside their tube shaped dwellings perforated with diamond-shaped openings.

The secret to an Oesia life: Prehistoric worm built tube-like "houses" on sea floor

July 07, 2016

The fossilized remnants of tube-like “dwellings” which housed a primitive type of prehistoric sea worm on the ocean floor have been identified in a new study.

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