Tag

Marine Parasites

All articles tagged with #marine parasites

science20 days ago•4 min saved

Decades-Old Salmon Cans Offer a Time Capsule of Ocean Health

Researchers analyzed 178 cans of salmon dating from 1979–2021, turning decades-old inventory into a 42-year ecological dataset by counting anisakid worms. The study found parasite numbers rose over time in chum and pink salmon (stable in coho and sockeye), suggesting reproduction and a functioning food web, while the data also illustrate how preserved cans can reveal long-term signals of ocean health in the Gulf of Alaska and Bristol Bay. Worms pose no risk to humans after processing.

via The Daily Galaxy|

#anisakid-worms #long-term-dataset #marine-parasites

science-and-environment2 years ago•5 min saved

"Insights from Four Decades of Canned Salmon on Marine Food Webs"

Researchers have used canned salmon from the past to study the history of marine parasites in Alaskan waters. By dissecting preserved filets from 178 cans, they found that anisakid worm levels rose for chum and pink salmon from 1979 to 2021, while staying the same for coho and sockeye salmon. The presence of these parasites is seen as a signal of a healthy ecosystem, and their increase may indicate a stable or recovering ecosystem. The study suggests that old cans of fish could provide valuable historical data for understanding marine food webs and ecosystems.

via Phys.org|

#alaskan-waters #canned-salmon #ecological-research

paleontology2 years ago•5 min saved

"World's First Endoparasitic Marine Tapeworm Fossil Trapped in 99-Million-Year-Old Amber"

Scientists have discovered an enigmatic fossil of a tapeworm in mid-Cretaceous Kachin amber, providing the first partial body fossil of a tapeworm and shedding new light on the early evolution of these parasites. The fossil, dating back to about 100 million years ago, displays unique features consistent with extant trypanorhynch tapeworms that parasitize marine elasmobranchs, and its exceptional preservation in amber has also revealed insights into the taphonomy of amber. This discovery highlights the importance of amber research in paleoparasitology and suggests a possible scenario for the deposition of the tapeworm in the amber.

via Phys.org|

#cretaceous-amber #fossil-preservation #marine-parasites