Reference | Haw, F., P. K. Bergman, R. A. Fralick, R. M. Buckley, and H. L. Blankenship. 1990. Visible implanted fish tag. American Fisheries Society Symposium 7:311-315. |
Abstract | After we observed that coded wire tags and fragments of polypropylene implanted into tissues of some perciform and salmonid fishes remained externally visible, we implanted alphanumerically coded tags into periocular transparent tissue of 119 rainbow trout Oncorhynchus mykiss (formerly Salmo gairdneri), 149-280 mm long, that were under observation from 22 to 44 weeks. Tags, made from polyester and diazo film, were 0.08-0.18 mm thick, 0.6-1.3 mm wide, and 1.5-4.0 mm long. Five tags were shed, but none later than 4-7 weeks after implantation. Larger alphanumerically coded laminated implants were more easily read externally. Most tissue reactions to the implants were mild to moderate; more severe responses may have resulted from concentrations of exposed laminating adhesive. The visible implanted tag seems to offer a viable alternative to percutaneous devices in some fishes. Work continues on tag design, development of an efficient injector, and application of the method to other fishes. |
Tag | VI Alpha |
Objective | Evaluate tags |