70 



Fishery Bulletin 88(1), 1990 



1 mm 



^■ 



\S> 



1 mm 



f^ 



>MARG 



Figure 2 



Measurements taken from each sagitta of Chiietiidiiilfnisfiibi'r used in age analysis. (1) Photograph of the left 

 sagitta from a young-of-the-year (115 mm TL) specimen. (2) Photograph of a whole left sagitta from an age-6 

 (396 mm TL) specimen. Orientation of the sagittae within the neurocranium is indicated: A anterior; P posterior; 

 D dorsal; V ventral. A1-A6 represent successive measurements to each annulus; OR is the ventral sagitta radial 

 measurement; MARG is the marginal increment; K is the kernel of the sagitta. 



were present (Table 1). Stomolophufi mdeagriii was, by 

 far, the dominant organism according to all numeric 

 indicators (%F, %N, %V, IRI, and MI). Hydroids, epi- 

 faunal amphipods, and anthozoans (sea anemones) were 

 observed in considerably lower volumes, numbers, and 

 frequencies than S. meleagris. 



Ninety percent of the stomachs from Atlantic spade- 

 fish obtained by other collection methods (nets and 



spearing) contained tood, and at least 75 prey species 

 were represented (see Appendix). In sharp contrast to 

 the hook-and-line samples, jellyfish occurred in only one 

 stomach collected by nets or spearing even though 

 S. meleagris and other jellyfish were common in the 

 artificial reef areas during many of the spearfishing ex- 

 peditions and were abundant in trawl catches. Further- 

 more, the species of jellyfish eaten was identified, by 



