Six of these recaptures (9F, 10F, 1M, 18F, 19F, 20M) 

 can be classified as migrants. Recoveries 9F and 10F 

 moved easterly, with the latter being taken significantly 

 shoaler (56 fathoms = 102 m) than at release. Return 1M 

 migrated at near record speed of 5.1 miles (9.4 km) per 

 day to a point 62 miles (115 km) westerly at a depth (120 

 fathoms = 219 m) significantly deeper than at release. 

 The release depth here, as at a number of other stations, 

 was significantly shoaler than release depth for reasons 

 explained earlier; it is conceivable, therefore, that bot- 

 tom temperature at the release site was sufficiently 

 divergent to cause abnormal behavior. Returns 18F, 19F, 

 and 20M were recaptured at the same point in time and 

 space after 49 days at large; their recovery position was 

 18 miles (33.4 km) easterly in shoaler (69 fathoms = 126 

 m) water. 



Composite Station 7 (See Figure 10 and 

 Appendix Table 7) 



Ten recaptures have been reported from a single point 

 release of 99 lobsters on the west side of Veatch Canyon 

 on 2 May 1968. Mean depth at first capture was 200 

 fathoms (366 m); mean depth at release was 100 fathoms 

 (183 m). Eight of the recaptures were reported by specific 

 location. Sex ratio at release was 77 females (77%) to 22 

 males; the ratio of the returns was 7 females (70%) to 3 

 males. 



Mean time at large for all recoveries was 477 days (1.3 

 yr); greatest time at large for a located individual, a 

 mature female, was 771 days (2.1 yr). This individual 

 was recaptured 58 miles (107 km) north of the point of 

 release in June 1970; its location in time and space is con- 

 sistent with a working hypothesis of seasonal shoaling 

 and return to home locality. 



Mean distance traveled by those lobsters with specific 

 capture locations (8) was 29.3 miles (54.4 km). Two in- 

 dividuals qualified as long migrants; one of these was the 

 mature female noted above while the other was a mature 

 male. 



Among the eight located recaptures, only one (8M) is a 

 defined migrant and is consistent with the springtime 

 shoaling hypothesis; this individual ranged shoalward 

 from 100 to 63 fathoms (183-115 m) at a net speed of 1.8 

 miles (3.3 km) per day. 



Composite Station 8 (See Figure 1 1 and 

 Appendix Table 8) 



Four recaptures have been reported from a single point 

 release of 50 lobsters on the east side of Atlantis Canyon 

 on 14 June 1968. Mean depth at first capture was 70 

 fathoms (128 m); mean depth at release was 86 fathoms 

 (157 m). Two of the recoveries were reported by specific 

 location and one by approximate location. Sex ratio at 

 release was 30 females (60%) to 20 males; the ratio at 

 recapture was 1 female to 3 males. 



Mean time at large for all recoveries was 386 days (1.1 

 yr); greatest time at large for a located individual, a 



mature male, was 734 days (2.0 yr), during which time 

 apparent dispersion was 26 miles (48.2 km). 



Maximum dispersion was attained by 156M, a mature 

 male, which was recaptured 114 miles (211 km) easterly 

 near the head of Lydonia Canyon. A third individual, a 

 mature female, was reported from the vicinity of Hudson 

 Canyon, some 100 miles (185 km) westerly of release. 



Composite Station 9 (See Figure 12 and 

 Appendix Table 9) 



Nineteen recaptures have been reported from a single 

 point release of 143 lobsters on the west side of Atlantis 

 Canyon on 15 June 1968. Mean depth at first capture was 

 70 fathoms (128 m); mean depth at release was 100 

 fathoms (183 m). Thirteen of the recaptures were 

 reported by specific location and two by approximate 

 location. Sex ratio at release was 72 females (50%) to 71 

 males; the ratio at recapture was 11 females (58%) to 8 

 males. 



Mean time at large for all recoveries was 623 days (1.7 

 yr); greatest time at large, and record high overall, for a 

 located individual (946M), a mature male at release, was 

 1,549 days (4.2 yr). This individual was recaptured 118 

 miles (219 km) easterly at Lydonia Canyon and had in- 

 creased 63% in carapace length by virtue of at least three 

 molts. 



Mean distance traveled by those lobsters with specific 

 capture locations (13) was 36.1 miles (66.9 km). Three in- 

 dividuals, a mature female, an initially immature male, 

 and the mature male cited above, surpassed the 50-mile 

 (92.7-km) range from point of release. 



Composite Station 10 (See Appendix Table 10) 



Three recaptures have been reported from a single 

 point release of 39 lobsters some 15 miles (27.8 km) 

 northeasterly of Atlantis Canyon on 16 June 1968. Mean 

 depth at first capture was 90 fathoms (165 m); mean 

 depth at release was 60 fathoms (110 m). All recaptures 

 were reported by specific location. Sex ratio at release 

 was 25 females (64%) to 14 males; the ratio at recapture 

 was 2 females to 1 male, all being sexually immature. 



Mean time at large (48 days) and mean distance 

 traveled (14 miles = 25.9 km) were lowest and second 

 lowest, respectively, among all subgroups of returns. The 

 low rate of return, and particularly the disappearance of 

 the group after only 60 days at large, suggests that un- 

 usually high mortality occurred shortly after release. 



Two of the three recoveries (34F, 41F) are migrants by 

 definition; both were immature females and were taken 

 only slightly shoaler than release depth. The directionali- 

 ty of these tracks, as with many others among the defin- 

 ed migrants, has not resulted in maximum shoaling for 

 distance traversed; it seems plausible, however, that 

 those individuals, especially immatures, captured and 

 released well up on the shelf as late as June might, in the 

 main, have already completed a migratory transition 

 from colder slope water to the seasonably warmer shelf 



11 



