Thrown from fish tanks to wetlands, invasive turtle poses threat to waterbodies in Coimbatore

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Two red-eared slider turtles sheltered astatine  the avian recuperation centre of the Forest Department successful  Coimbatore.

Two red-eared slider turtles sheltered astatine the avian recuperation centre of the Forest Department successful Coimbatore. | Photo Credit: M. PERIASAMY

After h2o hyacinths, different invasive taxon is posing a menace to tanks and different wetlands successful Coimbatore. Red-eared slider turtle, an invasive turtle taxon that got circulated crossed countries done favored trade, is the caller entrant arsenic 2 reptiles were accidentally captured by fishermen from a vessel successful the metropolis recently. The turtles were aboriginal handed implicit to the Forest Department. 

The incidental has renewed attraction connected the ecological risks associated with the merchandise of exotic pets similar the red-eared slider turtle into earthy h2o bodies.

Native to the United States, red-eared slider is considered 1 of the world’s astir wide introduced freshwater turtles, which present has an established organisation crossed each continents but Antarctica, posing a menace to autochthonal biodiversity, according to experts.

Biologist P. Prasanth said the exotic turtles enters India done exotic favored imports and are commonly sold erstwhile they measurement little than 4 inches.

“Many radical bargain them arsenic ornamental pets, but they turn rapidly and go hard to maintain. Owners yet wantonness them successful lakes, ponds oregon parkland h2o bodies,” helium said.

Once released, red-eared sliders breed rapidly and grow unchecked owed to the lack of earthy predators. The taxon competes straight with India’s autochthonal turtles for basking sites, nesting grounds and food. Their assertive behaviour and higher depletion patterns besides impact food population, disturbing freshwater ecosystems, helium added.

“Weak monitoring and restrictions let exotic taxon to participate the country,” said Mr. Prasanth, stressing the request for consciousness among students, favored owners, traders, section residents and fishermen astir the ecological risks of releasing specified pets. Early reporting of sightings, helium said, tin assistance region the turtles earlier they spread, helium added.  

“The red-eared slider is highly adaptable and tin past nether sub-optimal somesthesia conditions. Its flexibility allows it to thrive successful non-native environments,” said A. Abinesh, a wildlife biologist.

He added that the taxon exhibits assertive hunting behaviour during definite periods. “One specified signifier is during pregnancy, erstwhile the turtle requires excess nutrient and easy preys connected autochthonal aquatic species. They besides onslaught oregon outcompete different taxon to asseverate dominance and support hierarchy,” helium noted.

In its autochthonal habitat, the red-eared slider is predominantly aquatic, becoming terrestrial lone erstwhile expanding its range. However, successful invaded regions, it adopts much terrestrial traits, enabling it to dispersed crossed varied landscapes, helium added.

District Forest Officer N. Jayaraj said the Forest Department conducts periodical checks astatine favored shops to cheque commercialized of exotic species.

The Forest Department has instructed fishermen to pass upon sighting red-eared slider turtles successful tanks successful the metropolis and handover, if they are accidentally caught during fishing.

Published - January 21, 2026 10:12 p.m. IST

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