Fishes of the Western North Atlantic, Edizione 1,Parte 3John Tee-Van Sears Foundation for Marine Research, Yale Univ., 1948 |
Dall'interno del libro
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Pagina 29
... mature , there is practically no exterior distinction between the sexes . The cow Sturgeons , when full of ripe eggs , have a greatly swollen abdomen with rather thin walls , and the mature males have a more elongated appearance , with ...
... mature , there is practically no exterior distinction between the sexes . The cow Sturgeons , when full of ripe eggs , have a greatly swollen abdomen with rather thin walls , and the mature males have a more elongated appearance , with ...
Pagina 30
... mature ovaries are very large and make up 10-20 % of the total weight of the fish . As the ripe eggs become dark , 15 the whole ovary darkens . Mature testes are pale yellow to whitish . It is a common observation that , even in the ...
... mature ovaries are very large and make up 10-20 % of the total weight of the fish . As the ripe eggs become dark , 15 the whole ovary darkens . Mature testes are pale yellow to whitish . It is a common observation that , even in the ...
Pagina 467
... mature during this stage but the females do not , so far as is known . FINGERLING : same as parr . SMOLT : A young fish that has acquired a coat of guanine that hides its parr marks and gives it a shiny , silvery appearance . This ...
... mature during this stage but the females do not , so far as is known . FINGERLING : same as parr . SMOLT : A young fish that has acquired a coat of guanine that hides its parr marks and gives it a shiny , silvery appearance . This ...
Sommario
Names of Bones by G W Mead and Margaret G Bradbury | 20 |
known to the ichthyologist and many students of oceanography constitute a notable | 102 |
Text and Footnote References | 105 |
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Fishes of the Western North Atlantic: Editorial Board: Editor-in ..., Parte 4 John Tee-Van Visualizzazione estratti - 1948 |
Fishes of the Western North Atlantic: Editorial Board: Editor-in-chief John ... Visualizzazione estratti - 1948 |
Parole e frasi comuni
abund Acad adults Amer anal fin Anchovia Anchoviella anteriorly Atlantic Atlantic Salmon base of caudal base of pelvic body Brazil Bull Canada Capelin caudal fin Caudal peduncle cent of standard Clupea coast color Cuba Cuvier and Valenciennes depth descr diagn diameter dorsal fin Fin rays Florida Fowler genus gill rakers Gulf Gulf of Maine head Hildebrand Hist Jordan and Evermann Lake last ray length of base longest rays lower limb mandible margin maxillary mouth North opercle orig origin of anal Pectoral fin pelvic fin Philad Poey Poiss posterior postorbital pounds Proc Proportional dimensions range reaching refs River Salmon scutes Shad slender spawning species specimens standard length Study Material synon Synonyms and References Tarpon teeth type local U. S. Bur U. S. Comm U. S. Fish Comm U. S. nat USNM usually Valenciennes Ventral scutes Vertebrae Woods Hole young Zool