How To Extract Otoliths from a Largemouth Bass
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- เผยแพร่เมื่อ 28 ก.ย. 2024
- In this video, an FWC biologist demonstrates how to extract otoliths from a Florida largemouth bass. Otoliths, commonly known as "earstones," are hard, calcium carbonate structures located directly behind the brain of bony fishes. Biologists use otoliths to determine how old an individual fish is. These bones have rings very much like a tree trunk, and every year environmental triggers cause a new ring to form. There are several things researchers can gather from this information, and our web article goes into more detail about otoliths and their importance to research: myfwc.com/resea...
What does fish and game do with the otoliths when they're done with them?
In freshwater and saltwater labs the archived samples are then placed into storage where they can be accessed by the Age and Growth Lab, fellow scientists, and grad students as a reference to a particular study, for new research studies, or for training purposes. Our marine fisheries lab archive contains approximately 75,000 whole right otoliths and 341,000 processed left otolith slides dating all the way back to 1966!
@@FWCResearch that's fantastic!! Thank you!
very good and easy. fantastic!!
please could you demonstrate for narrow-barred Spanish mackerel?
wow
Excellent concise demonstration. Well done.
To whom it may concern. I want to point out a concern on the invasive species TILAPIA. it seems that Tilapia has a generic issue with their skin. When they are stressed out, they develop ulcer in their skin. I caught some juveniles one, did not know they were tilapias, i was catching cichlids for pets. I put a tilapia with my jaguars, the tilapia got so stressed out, it developed an ulcer the size of a dime, on top of that, got quick fungus and the fish didn't die. I thought, this was an isolated case. I went to catch some more baby tilapias, repeated the same process, and it happened again. Tilapias being the only fish in my whole collection of cichlids, i caught about 8 baby tilapias, and they all developed ulcer in different part of the bodies. I wouldn't trust eating tilapias at all, you don't know if those ulcers are a result of something being done by farmers in the past and those fish developed that disease. I thought it was an issue with the tank water parameters, but only tilapia has been affected by this. If there is something wrong with this specie, there should be a warning flag letting people know to be cautious when eating wild catch tilapias.
I have also this is have vollu
i love no drama info filled videos