Total number of Eggs 8 Includes all pilchard eggs taken in 



sample^ whether normal or abnonnal. Pilchard eggs were classi- 

 fied as abnormal when the embryos were stunted and misshapen in 

 appearance. It is not known whether such abnormalities are 

 caused by a diseased condition of the eggs or by mechanical 

 Injury during collectiono 



Pilchard eggs are separated into the several days of spawning- 

 represented in sach sample (see Ahlstrom 19U3)«. The age cate=> 

 gories are designated as follows? A ■= eggs spawned within 2li 

 hours of collectioni B - eggs spawned within 2k to ii8 hours of 

 collection" C =■ eggs spasmed within U6 to 72 hoiirs of collectioni 

 D = eggs spawned within 72 to 9$ hoxirs of collectioni Unclass, 

 (Unclassified eggs) - refers to deteriorating eggs that could not 

 be classified with certaintyj n «- total number of pilchard eggs 

 in a standardized haul« 



Average n ' § Average number of eggs in a standardized haul per 

 day of spawning represented* Because of incomplete age categories^ 

 resulting from collection being made while spawning or hatching 

 was acstively taking place^ not all age categories were used in 

 determining n\ but only those followed by an asterisk (for a 

 discussion of this problem, refer to Sette and Ahlstrom^ 19li8) » 



Table III .—Record of Pilchard Larvae^ 19^0 



Mi<^ <3;tob. o f size classes 8 The larvae are grouped into size 

 classes "wiich have the following midpoints and ranges g: 



Midpoint Range 

 (in rameX (injmn.) 



3.25 



6oT5 



8e75 



9.75 

 10.75 

 llc75 



2.25 ° I4.25 



U.26 

 5.26 

 6.26 

 7^26 

 8.26 

 9.26 

 10.26 

 11.26 



= 5.25 

 = 6-25 



^ #5 



= ^.25 

 - 9*2^ 

 =10.25 



'11.25 



=12.25 



Midpoint 



12.75 

 13.75 



111. 75 

 15.75 



17.25 

 19.25 

 21.25 

 23.75 



Range ' 

 ( in mm .) 



12.26 - 13.25 



13.26 - li;.25 



lli.26 - 15.25 



15.26 = 16.25 



16.26 =. 18.25 

 18.26 - 20.25 

 20.26 - 22.25 

 22.26 = 25.25 



10 



