CLARKE; DIETS OF FOURTEEN SPECIES OF MESOPELAGIC FISHES 



pigmented types, e.g., Calanus tenuicornis and 

 Neocalanus and Pleuromamma spp. copepodites, 

 were abundant but mostly ignored by the fishes. 



Difference between species' diets were often cor- 

 related with differences in one or more of the mor- 

 phological features examined (Figures 1-4). The 







15 20 25 30 35 40 45 50 55 60 65 70 75 80 



STANDARD LENGTH (mm) 



Figure l. — Relationships between standard length and premaxillary length for 14 species of mesopelagic fishes designated by initials 

 of genus and species names. Lines for Lampanyctus nobilis, Triphoturus nigrescens, Notolychnus valdiviae, Benthosema suborbitale, 

 Diogenichthys atlanticus, Diaphus schmidti , D.perspicillatus, D. fragilis, D. trachops , and Bregmacerosjaponicus and ( dashed lines) for 

 Lampanyctus steinbecki, Ceratoscopelus warmingi. and Bolinichthys longipes are drawn from equations determined by least squares 

 regression on measurements from five or more specimens of each species over the size ranges plotted; coefficients of determination (r*) 

 exceeded 0.80 for all. Melamphaes danae (r^ = 0.48) is represented by the area enclosed by points from five specimens. 



633 



