. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Systematics and Biology of Peprilvs • Horn 187. Figure 13. Peprilus simillimus, mm SL, Puget Sound, Washington, UW 14656. length of shortest anal ray. Dorsal with two to four (usually three) small spines preceding the rays; anal with two or three (usually three) spines anterior to the rays. Base of anal fin shorter than base of dorsal (fewer rays). Caudal fin long, moderately to deeply forked, about 18 to 32 per cent of total length. Subdermal canal system visible as indistinct parallel lines on body in preserve
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Systematics and Biology of Peprilvs • Horn 187. Figure 13. Peprilus simillimus, mm SL, Puget Sound, Washington, UW 14656. length of shortest anal ray. Dorsal with two to four (usually three) small spines preceding the rays; anal with two or three (usually three) spines anterior to the rays. Base of anal fin shorter than base of dorsal (fewer rays). Caudal fin long, moderately to deeply forked, about 18 to 32 per cent of total length. Subdermal canal system visible as indistinct parallel lines on body in preserved material; dendritic canals on top of head and nape distinct. Premaxil- lary teeth slightly recurved, mostly pointed, simple, but a few on a particular specimen may have two or three small cusps. Swim- bladder not seen in this species. Coloration as described for the genus. Maximum length probably 280 mm SL. Variation. Except for eye diameter, coefficients of variation (V) for propor- tional measurements range from to about 9 (Table 11) and from to for meristic characters (Table 12). The V value for eye diameter as a percentage of SL is , a high value resulting from allo- metric growth. The sample size (Table 11) of P. similli- mus used is considered to be reasonably adequate, and specimens from almost all parts of the known range have been ex- amined. Except for vertebral number, ranges of meristic values appear, by in- spection, to approach a normal distribution (Tables 1 to 4). Vertebral number, as in all species of Peprilus, is relatively constant (Table 5). Geographic variation. There is slight but inconclusive evidence that northern mem- bers of P. simillimus are larger and deeper- bodied. The dorsal, anal, and caudal fins of northern specimens seem to be shorter and less conspicuous. The differences are slight in the dorsal and anal fins, but more prominent in the caudal fin. Length of the caudal fin expressed as a percentage of the total length in sp
Size: 2211px × 1130px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology
