Which disease is caused by saprolegnia?

Saprolegniasis, a disease affecting fish eggs and juvenile fish in hatcheries worldwide, is caused by the pathogenic oomycete Saprolegnia parasitica. This disease presents as greyish-white patches of filamentous mycelium on the body or fins of fish and is associated with tissue damage leading to death of the animal.

How do you treat saprolegnia fungus?

Treatment. Saprolegniasis can be treated with saltwater baths (10–25 g/l for 5–30 min SID), benzalkonium chloride (2 mg/l bath for 10–60 min), malachite green, new methylene blue, potassium permanganate, and copper sulfate (Wright, 1999a; Pessier, 2002; Densmore and Green, 2007).

What is the symptoms of saprolegniasis?

The clinical signs of saprolegniasis include haemorrhagic ulceration; erosion of skin, fins, gills and muscles; systemic mycosis of the liver, spleen, eyes and kidney and massive mortality (Okaeme and Olufemi, 1997). Low water temperature is a main reason for the spread of this disease.

What does saprolegnia look like on this organism?

Typically, the fuzzy patches of Saprolegnia are white or gray, but if your tank’s water contains a lot of algae or other debris, the patches may be green, red, or brown. Damage to the skin or gills exposes the fish to secondary attacks from bacteria and other fungi, which can quickly lead to death.

Where is Saprolegnia found?

Saprolegnia infections are generally external and appear anywhere on the body surface, fins, or gills. They are often accompanied by pathogenic bacteria or protozoan parasites, which can also be the predisposing factor to fungal infection.

Is cotton wool disease contagious to humans?

The disease is highly contagious and the outcome is often fatal. It is not zoonotic.

Where is saprolegnia found?

Where can one find saprolegnia?

Where can you find Saprolegnia? It grows on dying and dead fish, insects, and grows on bits of dog food.

Where can one find Saprolegnia?

What is the common name for saprolegnia?

cotton moulds
Saprolegnia is a genus of water moulds often called cotton moulds because of the characteristic white or grey fibrous patches they form.

What is the scientific name for saprolegnia?

SaprolegniaSaprolegnia / Scientific name

How do you get rid of cotton wool disease?

Treatment for cotton wool disease in freshwater fish includes salt baths using Freshwater Aquarium Salt or commercially available antifungal treatments for aquarium use. In some instances, the entire tank is treated, but if individual infections are present, treating the fish in a separate hospital tank is preferable.

What are the causative agents of saprolegniasis (fungus)?

Oomycetes of the Saprolegnia genus are causative agents of saprolegniasis (fungus) and are ubiquitous in freshwater environments ( Jiang et al., 2013 ). Saprolegniasis is associated with enormous losses in the global aquaculture industry ( Van West, 2006 ), affecting cold- and warm-water species alike.

Is Saprolegnia a secondary pathogen?

Saprolegnia is generally a secondary pathogen, though in the right circumstances, it can act as primary. It most frequently targets fish, both in the wild and in tank environments. Through necrosis of the skin, Saprolegnia will spread across the surface of its host as a cotton-like film.

Does Aeromonas A199 inhibit Saprolegnia growth?

Lategan and Gibson (2003) reported that an Aeromonas media strain A199 can inhibit the growth of Saprolegnia sp. in vitro. The antagonism was suggested to be derived from a bacteriocin-like inhibitory substance (BLIS) produced by strain A199.

Is Saprolegnia a necrotroph or saprotroph?

Saprolegnia, like most oomycetes, is both a saprotroph and necrotroph. Typically feeding on waste from fish or other dead cells, they will also take advantage of creatures that have been injured. An infection is known as oomycosis .