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Pagina 51
at water temperatures ranging between 56 ° -64 ° F . Among 63 adult females , three were " pasters " ; i . e . with the roe in the form of a slimy , grayish white paste consisting of squeezed eggs , white yolks , and ruptured membranes ...
at water temperatures ranging between 56 ° -64 ° F . Among 63 adult females , three were " pasters " ; i . e . with the roe in the form of a slimy , grayish white paste consisting of squeezed eggs , white yolks , and ruptured membranes ...
Pagina 465
After each spawning act , the female moved upstream of the bed and cut vigorously with her tail , thus covering the eggs with gravel . Each spawning act took place in 10-15 seconds , and the eggs were completely covered about 30 seconds ...
After each spawning act , the female moved upstream of the bed and cut vigorously with her tail , thus covering the eggs with gravel . Each spawning act took place in 10-15 seconds , and the eggs were completely covered about 30 seconds ...
Pagina 466
The spawning males may fail to get their vent deep enough into the bed to have their sperm fertilize most or all of the eggs . Under such circumstances , the parr are of importance since their sperm , released very close to the eggs ...
The spawning males may fail to get their vent deep enough into the bed to have their sperm fertilize most or all of the eggs . Under such circumstances , the parr are of importance since their sperm , released very close to the eggs ...
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Sommario
Names of Bones by G W Mead and Margaret G Bradbury | 20 |
Order Isospondyli Composite Authorship | 89 |
known to the ichthyologist and many students of oceanography constitute a notable | 102 |
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Altre edizioni - Visualizza tutto
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 ..., Parte 8 John Tee-Van Visualizzazione estratti - 1948 |
Parole e frasi comuni
abund Acad adults Amer American anal fin apparently Atlantic base base of caudal Bermuda body Brazil Bull Canada catch caudal Characters coast color Comm counts dark depth descr Description developed diameter differs distance Distinctive dorsal fin eggs equal Evermann examples extending FIGURE Fish Florida Fowler fresh gill rakers Gulf half head Hildebrand Hist Island Jordan known Lake lateral least length less longer lower limb Maine mandible margin Material maxillary middle mouth nearly North northern origin Panama Pectoral fin pelvic fin pointed posterior pounds present probably Proc range rays reaching References refs reported River rows Salmon scales side silvery slender slightly snout spawning species specimens strongly Study synon taken teeth U. S. nat upper USNM usually ventral West York young Zool
Informazioni bibliografiche
| Titolo | Fishes of the Western North Atlantic, Edizione 1,Parte 3 Fishes of the Western North Atlantic, John Tee-Van Edizione 1,Parte 3 di Fishes of the Western North Atlantic: Editorial Board: Editor-in-chief John Tee-Van [and Others], John Tee-Van Edizione 1 di Memoir (Sears Foundation for Marine Research), Sears Foundation for Marine Research |
| Curatore | John Tee-Van |
| Collaboratore | Sears Foundation for Marine Research |
| Editore | Sears Foundation for Marine Research, Yale Univ., 1948 |
| Provenienza dell'originale | Michigan State University |
| Digitalizzato | 3 dic 2019 |
| Esporta citazione | BiBTeX EndNote RefMan |