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Lesser Siren

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description Lesser Siren Overview

The lesser siren, scientifically known as Siren intermedia, is a large, fully aquatic salamander native to ponds, lakes, and slow-moving streams across the eastern United States. It exhibits neoteny, meaning it retains its external gills and aquatic larval characteristics throughout its entire lifespan. The species possesses only a pair of small front limbs and completely lacks hind limbs, giving it an eel-like physical profile. When its aquatic habitat dries up, it is capable of secreting a mucus cocoon to prevent desiccation while buried in the mud.

help Lesser Siren FAQ

Does the lesser siren ever leave the water?

The lesser siren is fully aquatic and rarely leaves the water voluntarily, retaining its external gills throughout its entire life. During drought conditions, it can burrow into mud and secrete a moisture-retaining cocoon to survive until water returns, but it does not transform into a terrestrial adult.

What do lesser sirens eat?

Lesser sirens are carnivorous, feeding on aquatic insects, worms, small crustaceans, and occasionally small fish in their pond and stream habitats. They use a suction-feeding mechanism to capture prey, and larger individuals may take more substantial prey items.

How big does the lesser siren get?

The lesser siren (Siren intermedia) typically reaches lengths of 18 to 27 inches, making it a sizeable salamander. It is smaller than the greater siren (Siren lacertina), which can exceed three feet in length.

What happens to lesser sirens during a drought?

During dry periods, lesser sirens can survive by burrowing into mud and encasing themselves in a protective cocoon made from shed skin and mucus. This allows them to reduce water loss and enter a state of estivation until their aquatic habitat refills with water.

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