throughout a 5-6 month period. Since the population sizes for these areas were 

 relatively constant over time, an overall rate of population turnover of 

 approximately 45 percent per month is indicated for April through June and 60 

 to 90 percent from July through September. A similar rate of turnover occurred 

 in Area 4, but not in Areas 1 and 2. ^ 



Table 5. — Calculations of emigration from study area 3. 



Study 



period 



number 



and 

 duration 



(days) 



Number 



of 

 tagged 

 lobsters 

 resighted 



Number 

 lobsters 

 newly 

 tagged 



Total 

 number 

 tagged 

 in area 



Percent 

 emigration 

 (ca 1 culat i ons ) 



1 (20) 



45 



45 



April 22 

 -May 11 



2 (74) 



May 12- 

 July 24 



16 



37 



53 



45-16 X 100 = 63% 

 45 



63% 



20 days 



3.1% per 

 day dur- 

 ing 

 period 1 



3 (20) 



July 25- 

 Aug. 13 



28 



36 



53-28 X 100 = 47% 

 53 



47% = 0.6% per 



74 days day 



during 

 period 2 



4 (40) 



Aug . 14- 

 Sept. 22 



19 



19 



38 



36-19 X 100 = 47% 



36 



47% 



=2.4% per 



20 days day 



during 

 period 3 



VI-45 



