Laughing Gull Recovers From Suspected Red Tide

provided by Clinic for the Rehabilitation of Wildlife

Red tide is a harmful phenomenon that can affect wildlife and human health. Red tide occurs from an organism called Karenia brevis, which in large concentrations, can cause blooms or red tide. These blooms produce potent neurotoxins known as brevetoxins. These toxins can lead to mortality in wildlife, and cause respiratory issues in humans. Red tide events are naturally occurring, but are often exacerbated by nutrient pollution from agricultural runoff, wastewater discharge, and other human activities.

Although there are no current red tide blooms in the area, wildlife still sees its effects. Red tide toxins are bioaccumulative, meaning they build up in the bodies of marine organisms over time. Small fish and shellfish that ingest these toxins are eaten by larger predators, causing the toxins to concentrate as they move up the food chain. Birds, like this laughing gull, are affected when they eat contaminated fish and other organisms, leading to serious health issues due to the high levels of toxins accumulated in their prey.

On July 1, a Laughing Gull (24-3846) was admitted and suspected red tide poisoning. This gull displayed neurologic symptoms, a common consequence of exposure to the toxins of red tide. An IV catheter was placed in the patient and it was given intravenous lipid emulsion therapy (IVLE) which is used to help neutralize the toxin by binding the toxin and expel it from the body naturally.

The patient is currently still in care, and is showing signs of recovery. The gull is bright, alert, and responsive and displays normal behavior during “tub time” showing signs of improvement in its neurologic condition.

This laughing gull serves as an important reminder of the broader ecological challenges posed by red tide. As coastal communities, we must advocate for policies that reduce nutrient pollution and support research into mitigating the effects of harmful algal blooms. By doing so, we can protect not only the vulnerable marine life but also the health and livelihoods of human populations that rely on our oceans.