Oxytetracycline age validation of an adult shortfin mako shark Isurus oxyrinchus after 6 years at liberty.
This study presents findings on an oxytetracycline injected adult male shortfin mako Isurus oxyrinchus recaptured in waters off of southern California after 6 years at liberty. During the period at liberty, the vertebral band-pair deposition rate was validated at one per year. This result indicates that from a time at or near sexual maturity, male I. oxyrinchus in the north-east Pacific Ocean exhibit a band-pair deposition rate of one band pair per year, while deposition rates for juveniles in the area have been validated at two band pairs per year.
Ocean Associates, Inc., Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 8901 La Jolla Shores Drive, La Jolla, CA, 92037, U.S.A.
M J
MJ
Kinney
Department of Marine Biology, Texas A&M University at Galveston, 1001 Texas Clipper Rd, Galveston, TX, 77553, U.S.A.
R J D
RJ
Wells
Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 8901 La Jolla Shores Drive, La Jolla, CA, 92037, U.S.A.
S
S
Kohin
D000365:Age Determination by Skeleton / Q000379:methods*; D000818:Animals; D002140:California; D005610:Freedom; D008297:Male; D010118:Oxytetracycline; D010140:Pacific Ocean; D011859:Radiography; D012754:Sharks
D010118:Oxytetracycline
band-pair periodicity; shifting deposition rate