Table 11. — Tag recoveries 1 from male seals that had been selected and tagged 

 as yearlings and at age 2 or older in previous years, Pribilof Islands, 

 Alaska, 26 June to 5 August 1967 



Age group, 

 year tagged, 

 and tag series 



Age when: 



Tagged Recovered 



St. Paul 

 Island 



St. George 

 Island 



Total 



Adjusted 

 total 2 



Years 



Years 



Number 



Number 



Number Number 



1 In addition to the seals listed, 215 males on St. Paul Island and 46 males 

 on St. George Island that had lost two tags were taken, and 2 females with Rl- 

 series tags (one tagged at age 1 and one tagged at age 2) and 1 female with Sl- 

 series tag (tagged at age 1) were recovered. 



2 Adjusted to include animals of unknown age and 261 that had lost both tags. 

 Animals of unknown age were allocated on the basis of the proportion observed in 

 each age within each series and those that had lost both tags on the basis of the 

 number observed in each age and tag series. 



3 The tags were recovered, but age could not be determined because either the 

 flippers or the heads were separated from the carcasses during the skin- stripping 

 process. 



Table 12. — Tag loss observed, Pribilof Islands, Alaska, 1967 



\J Tags are applied to seals older than pups on St. Paul Island only. 



2_/ Includes some seals that had been single tagged as pups and given another tag at age 1 or 

 older. The animal had lost one of the tags before it was killed. 



3_/ Incidence of tag loss (p), from double-tagged animals was calculated from the following 

 formula: p=nj /(nj+2n2>; where n\ is number that lost one tag and n? is number that had lost a tag. 



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