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All articles tagged with #catfish

Catfish in Vermont Lakes Harbor a Rare Transmissible Cancer
science29 days ago

Catfish in Vermont Lakes Harbor a Rare Transmissible Cancer

Scientists have identified a clonally transmissible melanoma spreading among brown bullhead catfish in Lake Memphremagog and nearby waters across Vermont, New Hampshire, Maine, and New Brunswick, making it the fourth known naturally occurring transmissible cancer. The cancer cells move between fish through close contact (especially during spawning) and possibly via contaminated water or sediment. There is no known risk to humans, but the outbreak could affect local catfish populations and ecosystem health as researchers study its distribution and origins.

via The Times of India|
#catfish#lake-memphremagog#melanoma
Wild Catfish Carry First Known Case of Transmissible Cancer, Study Finds
science1 month ago

Wild Catfish Carry First Known Case of Transmissible Cancer, Study Finds

Researchers studying brown bullhead catfish from Lake Memphremagog found a high rate of melanoma and, using whole-genome sequencing, evidence that the tumors in multiple fish are from a single cancer cell lineage that appears to spread between fish, marking the first known transmissible cancer in a fish and in a freshwater setting. Transmission may occur during close contact such as spawning, though the exact route isn’t proven. There’s no evidence this cancer affects humans or other species, but the finding could help scientists understand how cancer cells evade the immune system and persist across hosts.

via ABC News - Breaking News, Latest News and Videos|
#catfish#genome-sequencing#lake-memphremagog
Lake Memphremagog Catfish Carry Transmissible Cancer, Study Finds
science1 month ago

Lake Memphremagog Catfish Carry Transmissible Cancer, Study Finds

A Nature study confirms brown bullhead catfish in Lake Memphremagog host a transmissible cancer in which cancer cells spread between fish like a parasite. It’s only the fourth documented case of a contagious cancer in the animal kingdom. The tumors appear as black lesions; surveys from 2014–2017 found about 25–33% of the lake’s brown bullhead infected. Transmission mode is not yet known (spawn-related spread suspected), but researchers say it does not appear to pass to other species and poses no threat to human health. Further work is needed to understand spread and population impact.

via AOL.com|
#catfish#lake-memphremagog#nature
Transmissible Melanoma Detected in Freshwater Catfish
science1 month ago

Transmissible Melanoma Detected in Freshwater Catfish

Researchers identified the first known cancer transmissible among freshwater fish in Lake Memphremagog: a clonal melanoma in brown catfish that shares a tumor-specific genetic identity across individuals. Genome sequencing showed tumor cells were more related to each other than to their hosts, suggesting the cancer itself spreads between fish rather than arising independently. No virus or bacteria was linked, though several transmission pathways are proposed (e.g., close contact during spawning or tumor cells persisting in water). Arsenic levels correlate with cancer distribution but are not proven causal. The finding could offer new insights into how cancers survive and spread.

via WIRED|
#catfish#freshwater#genomics
Contagious cancer spotted in wild catfish
science1 month ago

Contagious cancer spotted in wild catfish

Scientists have found a contagious cancer spreading among wild brown bullhead catfish in Lake Memphremagog, the fourth known naturally transmissible cancer. The melanoma-like tumours can spread between fish, with tumor genomes sharing a common lineage across individuals. The health impact is unclear, and how transmission occurs (likely direct contact) remains under study.

via Nature|
#catfish#contagious-cancer#lake-memphremagog
Catfishing for Intel: Ukraine Reveals Russian Positions Online
world2 months ago

Catfishing for Intel: Ukraine Reveals Russian Positions Online

Ukrainian resistance is reportedly using CIA-style catfishing—operatives posing as romantic interests—to coax Russian soldiers into divulging battlefield details. A photographed barracks image surfaced via this ruse, revealing a unit’s coordinates that were then targeted by a Ukrainian drone strike, illustrating Kyiv’s expanding drone warfare reach amid the war.

via Mediaite|
#catfish#cia#drone-strikes
The Disturbing Truth Behind 'Zombie Catfish' in U.S. Waterways
environment2 years ago

The Disturbing Truth Behind 'Zombie Catfish' in U.S. Waterways

"Zombie catfish," affected by enteric septicemia of catfish (ESC), a bacterial infection causing skin peeling and green flesh, have been found in U.S. waterways. The Georgia Department of Natural Resources explained that ESC impairs the fish's nervous system, leading to erratic behavior and loss of appetite. While ESC can be controlled through various management practices, eating infected catfish poses no risk to humans or other animals. However, caution is advised when consuming these altered fish.

via Yahoo Life|
#bacterial-infection#catfish#enteric-septicemia-of-catfish
Anglers reel in massive catfish, breaking records in Italy and Pennsylvania.
sports3 years ago

Anglers reel in massive catfish, breaking records in Italy and Pennsylvania.

A 9-foot-long catfish has been caught in Italy by Alessandro Biancardi, a member of the Madcat Italy fishing team, which could possibly break the world record. The fish measured over 112 inches, or just over 9 feet long. Biancardi decided not to weigh the fish out of fear of the stress it could cause the huge animal, and decided to instead release it back into the river "hoping it could give another angler the same joy he gave to me."

via USA TODAY|
#catfish#fishing#italy