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Fächelverhalten   [Other Title]

Salvelinus fontinalis (Salmonidae) - Schlängelbewegungen auf der Stelle und Bereiten der Laichgrube   [Other Title]
Salvelinus fontinalis (Salmonidae) - Sinuous Covering and Cutting   [Other Title]
Covering Behavior   [Other Title]
Rok: 1970
Žánr: Documentary Film
Exteriéry: n/a

Titulky:
Production company: R. L. Butler (University Park, PA)
  V. Hawthorne (Truckee, CA)
First released by: IWF (Göttingen)
Distributor: IWF (Göttingen)
Author: R. L. Butler
  V. Hawthorne


Klíčová slova: Bachsaibling, Bachsaibling, Brutpflege, Saibling, Salmoniformes, Salvelinus fontinalis, brood care, eastern brook trout, Salmoniformes
Following deposition of the eggs in the pit of the redd, the female begins a sinuous in-place movement at the site of oviposition. This very gentle movement sweeps any stray eggs into the interstices of the gravel and small gravel is deposited over the major site of deposition. The sinuous movement lasts from five to twenty minutes after which time she begins cutting covering behaviour. This cutting is similar to the previous behaviour in preparation of the redd, however, in this activity the moves about the redd in all directions. This last sequence of covering behaviour may last from one to three hours after which times she leaves the site. No further care is given to the eggs.

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Minutáž: 2 min

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Version 2
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Minutáž: 2 min

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Version 3
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Minutáž: 2 min

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