fund may do so by writing to the CaiCOFI Coordi- 

 nator, P.O. Box 271, La Jolla, CA 92038. Also in 

 1988, the American Institute of Fishery Research 

 Biologists posthumously awarded Reuben their 

 Outstanding Achievement Award for his distin- 

 guished lifetime career accomplishments in 



fisheries science and for his outstanding contribu- 

 tions to research and management. 



Lillian L. Vlymen 



National Marine Fisheries Service. NOAA 



Southwest Fisheries Center 



P.O. Box 271. Ld Jolta. CA 92038 



An Eponym for Reuben Lasker 



Reuben Lasker published in 1975 and 1978 two 

 papers in which he suggested that the main- 

 tenance — through a "period of calm" — of thin 

 layers of food-rich patches was crucial to the sur- 

 vival of newly hatched northern anchovy larvae. 

 These papers had an enormous influence on fish- 

 eries research throughout the 1980s, as can be 

 easily assessed, e.g., through citation analysis. 



Recently, Peterman and Bradford (1987, their 

 note Mo. 16) operationally defined the periods of 

 calm alluded to above as periods of four consecu- 

 tive days with wind speed below 10 m s~\ They 

 also proposed to view periods of five consecutive 

 calm days as two partly overlapping 4-day periods, 

 period of six days as three partly overlapping 

 periods, etc. 



I recently proposed (Pauly 1987), in a book 



largely devoted to following up on R. Lasker's work, 

 the term "Lasker events" as an eponym for a period 

 of four calm days with winds less than 5ms'. 

 The present volume provides an appropriate con- 

 text to reiterate and refine this suggestion. 



Thus, to allow different authors to identify dif- 

 ferent hypotheses related to the effects of periods of 

 calm, I propose to use the notation "ilj Lasker 

 event" for period of calm lasting / days and defined 

 by winds not exceeding j m s '. Thus, e.g., 

 Peterman and Bradford (1987) worked with "4/10 

 Lasker events", while Mendelssohn and Mendo 

 (1987) worked with "4/5 Lasker events". 



This suggestion offers a parallel for the more 

 general "Lasker-hypothesis" now widely used as an 

 eponym for the mechanism proposed by Lasker 

 (1978, 1985). 



References 



Lasker, R. 



1975. Field criteria for survival of anchovy larvae: 

 the relation between inshore chlorophyll 

 maximum layers and successful first feeding. 

 Fish. Bull., U. S. 73:453-462. 



1978. The relation between oceanographic condi- 

 tions and anchovy food in the California Current: 

 identification of factors contributing to recruit- 

 ment failure. Rapp. P.-v. Reun. Cons. int. 

 Ej<plor.Mer 173:212-230. 

 Mendelssohn, R., and J. Mendo. 



1987. Exploratory analysis of anchoveta recruit- 

 ment off Peru and related environmental 

 series. In D. Pauly and I. Tsukayama (editors), 

 The Peruvian anchoveta and its upwelling 



ecosystem: three decades of change, p. 

 294-306. ICL^RM Studies and Reviews 15, 

 351 p. Institute del Mar del Peru (IMARPE). 

 Callao, Peru: Deutsche Gesellschaft fur Tech- 

 nische Zusammenarbeit (GTZ), GmbH, Esch- 

 born. Federal Republic of Germany and Interna- 

 tional Center for Living Aquatic Resources 

 Management (ICLARM), Manila, Philippines. 

 Pauly, D. 



1987. Managing the Peruvian upwelling ecosys- 

 tem: a synthesis. In D. Pauly and 1. Tsukayama 

 (editors). The Peruvian anchoveta and its upwell- 

 ing ecosystem: three decades of change, p. 325— 

 342. ICLARM Studies and Reviews 15, 

 351 p. Institute del Mar del Peru (IMARPE), 



383 



