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American Eel

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The American Eel has a significant presence along the east coast of North America, including Newfoundland and Labrador. It has a complex life cycle and a broad habitat range, contributing to its unique ecological role.

Size

Adult females can reach up to 1 metre in length, while males typically are shorter than 40 cm.

Population

There is a concern regarding the declining population, especially since American eels spawn only once in their lifetime, with their entire population spawning together in the Sargasso Sea.

Scientific Name

Anguilla rostrata

Conservation Status

The American Eel is currently listed as of "Special Concern" by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) and is under consideration for listing under the federal Species at Risk Act. It has faced significant declines due to various environmental threats.

Habitat & Range

These eels are found in both freshwater and saltwater environments. They inhabit almost all lakes and rivers that flow to the sea in Newfoundland and extend up to the Lake Melville area in Labrador. They are known for the broadest habitat range of any fish in the world, encompassing environments connected to the Atlantic Ocean.

Diet

American Eels are nocturnal feeders, eating small fish, mollusks, insects, and crustaceans. Their diet varies with growth stages, from larval to mature adult stages.

american eel in Newfoundland & Labrador

The American Eel holds a unique place in the cultural history of Newfoundland and Labrador, particularly among Indigenous communities. For the Mi’kmaq and other Indigenous peoples, the American Eel is not just a source of sustenance but also a spiritual being imbued with cultural and medicinal properties. Traditionally, eel skin has been used by these communities for therapeutic purposes, such as wrapping sprains to provide relief from cramps and other ailments. The eel’s ability to be caught in both winter and summer made it a crucial food source, ensuring survival and continuity of cultural practices. The changing perception and significance of eels across different cultures underline their importance beyond just a dietary staple, highlighting the intersection of tradition, survival, and respect for nature inherent in Newfoundland and Labrador’s cultural fabric.

Ecologically, the American Eel plays a critical role in the aquatic ecosystems of Newfoundland and Labrador. Occupying a broad range of habitats from freshwater rivers and lakes to the saltwater of the Atlantic, the American Eel contributes significantly to the region’s biodiversity. Their complex life cycle, involving migrations over thousands of kilometers from their North American habitats to the Sargasso Sea for spawning, exemplifies the interconnectedness of global marine ecosystems. Moreover, as voracious predators feeding on various aquatic organisms, American Eels help maintain the ecological balance by controlling the populations of their prey species. However, they are also sensitive indicators of environmental health, with their declining numbers signaling changes in water quality, habitat availability, and the impacts of climate change.

THREATS

These eels face several threats, including habitat alteration, climate change, the construction of dams and turbines, and overfishing. Obstacles in water bodies also interfere with their migration, causing habitat fragmentation and increased mortality.

CURRENT PROTECTIONS

Protection is currently provided through the federal Fisheries Act. If listed under the Species at Risk Act, the American Eel will receive additional protection and a management plan must be developed. The species is also listed under Ontario’s Endangered Species Act and considered “vulnerable” in Newfoundland and Labrador.

These eels face several threats, including habitat alteration, climate change, the construction of dams and turbines, and overfishing. Obstacles in water bodies also interfere with their migration, causing habitat fragmentation and increased mortality.

further resources

Fisheries and Oceans Canada

DFO Humpback Whale Catalogue

NOAA Humpback Whale Info

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North Atlantic Marine Mammal Commission

The North Atlantic Marine Mammal Commission is an "international body for co-operation on conservation, management and study of marine mammals in the North Atlantic."

Whales in Newfoundland

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