. A biological survey of the Erie-Niagara system. Supplemental to Eighteenth annual report, 1928. Natural history -- New York (State); Fishes -- Erie, Lake; Fishes -- Niagara River (N. Y. and Ont. ); Erie, Lake; Niagara River (N. Y. and Ont. ). Fig. 15.—Coregonus clupeaformis postlarva, millimeters mm. stage. Fig. 15. Age unknown but similar to specimens 61 days old. Total length mm; standard length mm; length to vent mm; length of head mm; depth of head mm; greatest depth behind head mm; diameter of qyq mm. Dorsal rays fairly well developed; embryoni
. A biological survey of the Erie-Niagara system. Supplemental to Eighteenth annual report, 1928. Natural history -- New York (State); Fishes -- Erie, Lake; Fishes -- Niagara River (N. Y. and Ont. ); Erie, Lake; Niagara River (N. Y. and Ont. ). Fig. 15.—Coregonus clupeaformis postlarva, millimeters mm. stage. Fig. 15. Age unknown but similar to specimens 61 days old. Total length mm; standard length mm; length to vent mm; length of head mm; depth of head mm; greatest depth behind head mm; diameter of qyq mm. Dorsal rays fairly well developed; embryonic marginal starting again after wide space behind dorsal, continuing to caudal, complete on ventral side, with basal elements of anal fin developed but no rays; caudal slightly notched dorsally at end of notochord, lower portion becoming forked and rays well formed; ventrals prominent. Dorsal and ventral series of chromatophores still important but many smaller ones scattered over sides of head, body and caudal. mm. stage. 65 days old. All fins fully developed with exception of adipose, in which region a large fragment of the embryonic marginal Fig. 16.—Coregonus clupenjormis young fish, millimeters mm. stage. Fig. 16. Age unknown but similar to speci- mens 95 to 109 days old. Total length mm; standard length mm; length of head mm; greatest depth of body mm; diameter of eye mm. Assuming shape of adult. Pigmenta- tion essentially as in younger specimens but more diffused with dorsal and ventral ridges of body from head to caudal still most deeply pigmented; black, stellate dorsal chromatophores continu- ing down the sides to lateral line becoming gradually smaller and wider apart; lateral line marked by closely distributed small black si)ots; few chromatophores on ventral aspect of stomach but none beneath intestine; large areas of chromatophores behind eye still noticeable, and many more, lighter in color, between and befoi'c
Size: 2963px × 843px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublisheralbanyjblyoncompan
