phins captured with tuna (see Bayliff 1973 for de- 

 scription of tagging operations). Nine hundred and 

 forty-nine dolphins were thusly tagged (Table 2). 



In 1970, a crewman on the seiner Conquest vol- 

 unteered to tag dolphins during fishing operations. He 

 tagged 37 dolphins (probably spotted and spinner dol- 

 phins) with plastic-dart spaghetti tags. 



3. Beginning in 1971, scientific observers from NMFS 

 each year have accompanied some tuna seiners to the 

 "porpoise-fishing" grounds. Through 1975, these 

 observers tagged dolphins on an opportunity basis. 

 The observers tagged 105 dolphins on 3 cruises in 

 1971, 316 on 9 cruises in 1972, 204 on 16 cruises in 

 1973, 1,221 on 25 cruises in 1974, and 416 on 22 cruises 

 in 1975 (Table 3). Two short-finned pilot whales, 



Table 2. — Tags released from commercial seiners, 1969-76. Releases by NUMFS observers aboard nonchartered seiners are 

 detailed in Table 3. Tag type PD = plastic-dart spaghetti tag, MD = metal-dart spaghetti tag (see Table 3), DE = deer ear 

 tag, and RX = radio-transmitter tag. Letters a, b, and c refer to tag type subcategories defined in text. 





Cruise 



Cruise 









Tagged 













Spotted 



Spinner 



Common 



Bottlenosed 





Uniden- 







Vessel 



number 



period 



dolphin 



dolphin 



dolphin 



dolphin 



Other 



tified 



Total 



Tag type 



Connie Jean 



1055 



Oct-Nov 69 



207 



11 



















218 



PD(a) 



AnneM 



1057 



Jun-Aug 70 



>278 



>46 



10 



— 



— 



9 



343 



PD (61a, 278b) 



AnneM 



1058 



Sep-Nov 70 



340 



48 



















388 



PD(b) 



Conquest 



— 



Mar- Apr 70 



— 



— 



— 



— 



— 



37 



37 



PD(b) 



Queen Mary 



13 



Nov-Dec 71 



>105 



— 















'15 



120 



MD (107b, 24c) 









15 























15 



DE(a) 









3 























3 



RX 



Independence 



26 



Sep-Oct 72 



1 



4 



18 







2 1 







24 



MD(a) 









61 























61 



DE(b) 



Trinidad 



52 



Oct-Nov 73 



12 



1 



7 















20 



MD(a) 



John F. Kennedy 



53 



Nov-Dec 73 



59 























59 



MD(a) 









22 























22 



DE (c) 3 



Elizabeth C J 



208 



Oct -Dec 76 



124 



8 



















132 



MD' 









7 



1 



















8 



RX 



Total 







1,234 



119 



35 







1 



61 



1,450 





'Spotted or spinner. 











3 With 2-in disc 











^Pacific white-sided dolphin, Lagenorhynchus obliquidens. 





'With braided tubing. 









Table 3. 



—Tag releases (steel-dart spaghetti tags) by NMFS observers aboard commercial tuna seiners, 









1971-75. Tag types defined 



in text. 





















Tagged 













Cruise 



Spotted 



Spinner 



Common 



Bottlenose 





Uniden- 









number 



Year 



dolphin 



dolphin 



dolphin 



dolphin 



Other 



tified 



Totals 



Tag type 



6 



1971 











23 







'1 







24 





(a) 



8 





8 



18 



17 



11 











54 





(a) 



9 





16 







10 



1 











27 



105 



(10c, 95a) 



14 



1972 



18 























18 





(a) 



15 





43 







2 















45 





(a) 



16 





22 



21 



















43 





(a) 



17 





6 







2 



9 



'6 







23 





(a) 



20 





16 























16 





(a) 



21 





54 



1 







1 











56 





(a) 



22 





32 



13 



















45 





(a) 



23 





15 























15 





(a) 



24 





38 



2 



6 



9 











55 



316 



(a) 



29 



1973 



2 



4 



7 















13 





(a) 



30 





12 



5 















1 



18 





(a) 



31 





1 























1 





(a) 



32 





1 























1 





(a) 



33 





1 























1 





(a) 



34 





9 























9 





(a) 



38 





4 



1 



















5 





(a) 



39 





1 























1 





(a) 



40 





1 























1 





(a) 



41 





12 



10 



6 















28 





(a) 



43 





5 



1 



4 















10 





(a) 



44 





11 



1 



4 







=2 







18 





(a) 



45 





23 







8 















31 





(a) 



47 





7 







4 















11 





(a) 



48 





9 



12 



16 



8 











45 





(a) 



