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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 .
Between ...
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 .
Between ...
Pagina 465
... 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 later . 60 55 50 45 40
35 ...
... 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 later . 60 55 50 45 40
35 ...
Pagina 466
Under such circumstances , the parr are of importance since their sperm , close to
the eggs , have a good chance of reaching them . The number of eggs produced
varies with the age and size of the females , as shown in Table 1. Menzies has ...
Under such circumstances , the parr are of importance since their sperm , close to
the eggs , have a good chance of reaching them . The number of eggs produced
varies with the age and size of the females , as shown in Table 1. Menzies has ...
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Sommario
Names of Bones by G W Mead and Margaret G Bradbury | 20 |
Order Lepisostei by R D Suttkus | 61 |
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 frammento - 1948 |
Fishes of the Western North Atlantic: Editorial Board: Editor-in ..., Parte 8 John Tee-Van Visualizzazione frammento - 1948 |
Parole e frasi comuni
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