FISHERY BULLETIN: VOL. 72. NO. 1 



Table 15. — -Above: Maximum linear dimensions of Pontellina cephalothorax. Dorso-ventral height taken in lateral view m 

 includes Mx2 with setal fan closed, width across trunk taken in dorsal view (mm). 



Below: Mesh width of nets listed in Table 14. 



Copepodite 

 stage 



Sex 



Typical 

 specimen 



Small 

 specimen 



Nets' 



Juday 

 net 



III 



IV 



Adult 



0.30 X 0.28 0.38 X 0.34 0.48 X 0.44 0.61 X 0.56 0.62 X 0.60 0.70 X 0.66 0.90 X 0.75 

 0.28 X 0.26 0.36 X 0.34 0.46 X 0.42 0.58 X 0.54 0.56 X 0.56 0.62 X 0.60 0.75 X 0.64 



lOSN 



CalCOFI SN 



POFI SN 



Mesh 



widths 



(mm) 



0.18 



0.33 



0.55/0.25 (silk) 

 0.505/0.28 (nylon) 



0.66/0.31 



lOSN = Indian Ocean Standard Net 



CalCOFI SN = California Cooperative Oceanic Fisheries Investigations Standard Net. 



POFI SN = Pacific Oceanic Fisheries Investigation Standard Net. 



Table 16. — Comparison by Student-r test of mean abundance in day (0601 to 1800 h local time) and night (1801 to 0600 

 h local time) collections. Samples of each set selected for similarity of geographical origin, collecting procedures and 

 the presence of the species, i.e., samples negative for the species omitted. Samples derived primarily from those listed 

 in Table 14. 



Table 17. — Occurrence of Pontellina spp. in day (0601 to 1800 h local time) and 

 night (1801 to 0600 h local lime) samples. + present, - absent. 



Day 



Night 



+ 



X2 



Atlantic Ocean: 



pliinuua 



plutychela 

 Eastern Pacific Ocean: 



phiinata 



niurii 



sobrinu 

 Indian -Western Pacific Ocean: 



pliimata 



morii 



0.1 > p > 0.05 



0.75 > p > 0.5 



0.05 > p > 0.025 



0.9 > p > 0.75 



0.25 > p > 0.1 



0.5 > p > 0.25 



0.9 > p > 0.75 



108 



